Invited Speakers

Atsuo Yamada

Professor
The University of Tokyo
Japan

Speaker Bio

Atsuo Yamada has unique career covering both academic and industrial research. After serving as a laboratory head of Sony Research Center, he was immediately appointed as an associate professor at Tokyo Institute of Technology in 2002, a full professor of the University of Tokyo in 2009. During the period, he joined the John. B. Goodenough’s lab. in University of Texas at Austin as a visiting scholar for one year, and was called for sabbatical stay from University of Bordeaux as an invited professor to enhance research communication with Dr. Claude Delmas in ICMCB/CNRS.
 
His diverse research works on battery materials, particularly recognized for sophisticated approaches for structure-property relationships, include very early-stage exploration/optimization of LFP and more recently, identification and understanding of several functional electrolytes. He holds 90 patents, published 25 chapters and well over 270 refereed journal papers with total citation exceeding 30,000, delivering 150 plenary/keynote/invited presentations, and ranked as a Highly Cited Researcher by Clarivate Analytics, and now serving for the scientific advisory board of Advanced Energy Materials.

Among his many honors, Atsuo has been awarded the Spriggs Award and the Purdy Award from ACerS, the Scientific Achievement Award from ECS Japan, and IBA Research Award from International Battery Association, and Battery Division Research Award from the Electrochemical Society.

Lecture: Redefining battery science based on electrolyte energetics

In any electrochemical system, electrode potential is the central variable that regulates the driving force of redox reactions. However, quantitative understanding of the electrolyte dependence has been limited to the classic Debye-Hückel theory that approximates the Coulombic interactions in the electrolyte under the dilute limit conditions. Therefore, accurate expression of electrode potential for practical electrochemical systems has been a holy grail of electrochemistry research for over a century. Here we show that the ‘liquid Madelung potential’ based on the conventional explicit treatment of solid- state Coulombic interactions enables quantitatively accurate expression of the electrode potential, with the Madelung shift obtained from molecular dynamics reproducing a hitherto-unexplained huge experimental shift for the several battery electrodes. Furthermore, incorporating the effects of entropy and polarization dynamics could polish the theoretical model to perfectly fit the experimental data. Thus, a long-awaited method for the description of the electrode potential in any electrochemical system is now available.

Arumugam Manthiram

George T. and Gladys H. Abell Endowed Chair of Engineering
University of Texas at Austin
United States

Speaker Bio

Arumugam Manthiram is currently the George T. and Gladys H. Abell Endowed Chair of Engineering at the University of Texas at Austin (UT-Austin). He served as the Director of the Texas Materials Institute and the Materials Science and Engineering Program at UT-Austin for 11 years during 2011 – 2022. He received his Ph.D. degree in chemistry in 1980 from Indian Institute of Technology Madras. After working as a lecturer in chemistry at the Madurai Kamaraj University for 4 years and as a postdoctoral fellow both at the University of Oxford and at UT-Austin, he became a faculty at UT-Austin in 1991. His research is focused on new materials development for batteries and a fundamental understanding of the intricacies involved. He has authored 970 journal articles with 113,000 citations and an h-index of 164. He has mentored ~ 300 students and postdoctoral researchers, including the graduation of 72 Ph.D. students. He founded two startup companies, ActaCell Energy Systems in 2007 and TexPower EV Technologies in 2019.

He is an elected Fellow of the U.S. National Academy of Inventors, Materials Research Society, Electrochemical Society, American Ceramic Society, Royal Society of Chemistry, and American Association for the Advancement of Science. He is an elected Academician of the World Academy of Ceramics. He received the Battery Division Research Award in 2014, Henry B. Linford Award for Distinguished Teaching in 2020, Battery Division Technology Award in 2021, and the Inaugural John B. Goodenough Award in 2023, all from the Electrochemical Society. He received the Distinguished Alumnus Award of the Indian Institute of Technology Madras in 2015, Billy and Claude R. Hocott Distinguished Centennial Engineering Research Award in 2016, and International Battery Materials Association Research Award in 2020. He delivered the 2019 Chemistry Nobel Prize Lecture in Stockholm on behalf of Professor John Goodenough.

Lecture: Pushing the Capacity and Stability Limits of Oxide Cathodes in Lithium-ion Batteries

With an aim to enhance the energy density while lowering the cost, layered oxide cathodes with high nickel contents with low or no cobalt have come to the forefront. However, increasing the Ni contents above about 80% is met with severe challenges, such as inferior cycle and thermal stabilities. These challenges are linked largely to the instability of highly oxidized Ni4+ in contact with the electrolyte. The instability leads to aggressive surface reactivity, which results in a reduction of Ni4+ to Ni2+ on the surface, loss of oxygen, formation of resistive rock-salt phases, formation of cracks, loss of active lithium, Ni dissolution and migration to the anode, and consequent capacity fade during extended cycling. The reactivity also leads to thermal instability, gas evolution, and safety concerns.

To overcome the challenges, generally doping of high-Ni cathodes with various dopants is pursued. However, no clear understanding is available in the literature on which dopant does what. Doping is generally carried out randomly in the literature by a trial and error process. This presentation will provide a systematic investigation of doping LiNiO2 with various dopants, such as Co, Mn, Al, Mg, Ti, Nb etc. The effect of dopants on capacity, cycle life, thermal stability, and gas evolution will be presented, providing the underlying mechanisms involved. The surface reactivity depends both on the surface characteristics of high-Ni cathodes and the electrolyte. This presentation will then focus on the development of cathodes with a robust surface as well as more stable electrolytes to overcome the challenges. The ability to achieve long cycle life withn high capacity, while reducing the amount of gas evolution, by tuning the cathode and electrolyte compositions will be presented. Also, the fundamental understanding developed with the use of advanced analytical techniques, such as in-situ XRD, SEM, XPS, and TOF-SIMS will be discussed.  

Celina Mikolajczak

Mechanical Engineer
Lyten
USA

Christian Masquelier

Professor
Université de Picardie Jules Verne
France

Chunmei Ban

Associate Professor
University of Colorado Boulder
USA

Speaker Bio

Chunmei Ban is an Associate Professor at the Paul M. Rady Department of Mechanical Engineering and affiliated with Materials Science and Engineering Program at University of Colorado Boulder, Boulder, CO. Prior to 2019, Ban was a Senior Scientist (V) in the Chemistry and Nanoscience Center at National Renewable Energy Laboratory (NREL), Golden, CO, has led DOE-awarded projects in intermetallic anodes, high-energy cathodes, and direct recycling process for battery materials. Ban received a Bachelor’s and Master’s degree from the Department of Chemical Engineering from Tianjin University, China and holds a PhD in Chemistry from the State University of New York at Binghamton, supervised by Prof. M Stanley Whittingham, a 2019 Nobel Laureate in Chemistry. Her current research interests lie on comprehending the dynamic properties of the electrode-electrolyte interface during the electrochemical processes, and leveraging this understanding to advance the development of next-generation electrode and electrolyte materials for energy storage applications.

Lecture: Fluorine-Free Sodium-Ion Electrolytes for Sodium-Ion Batteries

Sodium-based beyond-lithium batteries offer promising and sustainable alternatives to commercially available lithium-ion batteries, thanks to the low-cost and high abundance of sodium sources ($2433 per ton, constituting 2.4% of the earth’s crust). Despite having a larger mass than lithium, sodium-ion batteries have the potential to achieve a gravimetric energy density reaching 170 Wh/kg at the cell level, owing to a rich selection of intercalation cathodes. However, to achieve highly reversible, long-lasting cycling performance, it is essential to facilitate the formation of robust electrode-electrolyte interfaces in shielding the electrodes from undesirable side reactions. Therefore, the pursuit of low-cost and high-performance electrolytes is crucial to unlocking the full potential of sodium-ion batteries. Here, this presentation will discuss our strategies in developing electrolytes for sodium-ion batteries. Rather than relying on conventional electrolyte salts, we focus on the exploration of fluorine-free electrolytes and their impact on the formation of the electrode-electrolyte interface. This approach offers a promising alternative to fluorine-containing electrolytes by harnessing safe, abundant and cost-effective materials.

Dong-Hwa Seo

Professor of Materials Science and Engineering
Korea Advanced Institute of Science and Technology (KAIST)
South Korea

Speaker Bio

Dong-Hwa Seo is an associate professor of materials science and engineering at Korea Advanced Institute of Science and Technology (KAIST), where he completed his PhD in 2011. He was an assistant professor of school of energy and chemical engineering at Ulsan National Institute of Science and Technology (UNIST) from 2019 to 2023. He worked at Samsung Research America as a research engineer (2017-2019), University of California, Berkeley as a research specialist (2016-2017), and Massachusetts Institute of Technology (MIT) as a postdoctoral researcher. His research is mainly focused on understanding the reaction mechanism of the battery materials and their interfaces at the atomic scale using first-principles calculation and developing high-performance battery materials based on the in-depth understanding. His published works in this field have been cited more than 17,000 times. He was a recipient of Early Career Award from the International Battery Materials Association (IBA) in 2018 and selected as Highly Cited Researchers in 2022 from Clarivate Analytics.

Lecture: Highly active-material-concentrated cathodes of nickel and cobalt-free cation-disordered rock-salts for Li-ion batteries

The shift towards electric vehicles and large-scale energy storage systems necessitates cost-effective and abundant alternatives for the commonly used Co/Ni-based cathodes (like LiNi0.6Mn0.2Co0.2O2) in Li-ion batteries (LIBs). Manganese-based disordered rock-salts (Mn-DRXs) have shown a potential to exceed the performance of traditional cathodes at a reduced cost, achieving more than 900 Wh/kg-AM (active material), but this has only been proven in cell designs that are not commercially viable. These designs use diluted electrode films (about 70 wt% AM) with excess carbon and binder. In this work, we reveal that the failures of Mn-DRXs in AM-concentrated electrodes stem from their low electrical conductivity and the collapse of their electrical network with volume change during charge and discharge. We overcome these challenges through the engineering of electrical percolation, showcasing highly concentrated electrode films of Mn-DRX cathodes (approximately 96 wt% AM) and achieving the highest reported energy density at the electrode level (around 1050 Wh/kg-cathode). This research also emphasizes the balancing effect of manganese content on the electrical conductivity and volume change of Mn-DRXs, pushing forward the development of Co/Ni-free LIB technology.

Dr. Esther S. Takeuchi

Professor and the William and Jane Knapp Chair in Energy and the Environment
Stony Brook University
United States

Speaker Bio

Dr. Esther S. Takeuchi is a SUNY Distinguished Professor and the William and Jane Knapp Chair in Energy and the Environment at Stony Brook University.  She holds a joint appointment at Brookhaven National Laboratory as Chief Scientist and Chair of the Interdisciplinary Science Department.  Previously, she was employed at Greatbatch, Inc., where her work was instrumental in the development of the lithium/silver vanadium oxide battery, the power source of life-saving implantable cardiac defibrillators.  Dr. Takeuchi is a prolific inventor with > 150 patents. 

Dr. Takeuchi is a nationally and internationally recognized scientist.  She is a member of National Academy of Engineering, the National Inventors Hall of Fame, the American Academy of Arts and Sciences, is a Charter Member of the National Academy of Innovation was awarded the National Medal of Technology and Innovation.  She received the E. V Murphree and Astellas Awards from the American Chemical Society and the Electrochemical Society (ECS) Battery Division Technology award.  She is a Fellow of the ECS, the American Institute of Medical and Biological Engineering, and the American Association for the Advancement of Science.  She has received the European Inventor Award, the Sigma Xi Walston Chubb Innovation Award, an honorary Doctorate in Engineering from Notre Dame University, the ECS Edward G. Acheson Award and was elected to the American Academy of Arts and Sciences.  She is the recipient of the 2022 National Academy of Sciences Chemical Sciences Award.  She recently received the Yeager Award from the IBA - International Battery Materials Association and the DOE Energy Achievement Award from the Secretary of Energy. 

Lecture: High Entropy Oxides: Insights into Electrochemical Behavior

A recent strategy for active material design is the exploration of high entropy oxides (HEOs). HEOs consist of multiple cations within a single oxygen lattice framework. HEOs are an attractive and expansive class of materials due to the exhaustive combination of cation combinations and synthetic approaches that are possible to tailor material properties. The formation of a single phase is based on the concept of entropy stabilization where the random arrangement of multiple components increases the configurational entropy (∆Sconfig) to stabilize the single-phase structure. The configurational entropy of HEOs can be determined by the following

where R is the universal gas constant, and xi and xj represent the mole fraction of the cation and anion components. Materials have been classified as high, medium, or low entropy where high entropy materials have ∆Sconfig ≥ 1.5R, low entropy materials have ∆Sconfig < 1R and materials with 1.5R > ∆Sconfig ≥ 1R are classified as medium entropy. We have synthesized HEO materials using several approaches including targeting several structural forms and compositions.  This presentation will examine the resultant electrochemistry as well as the evolution of a material as a function of the redox activity. 

Gerbrand Ceder

Daniel M. Tellep Distinguished Professor of Materials Science
University of California Berkeley
USA

Gleb Yushin

Professor
School of Materials and Engineering at Georgia Institute of Technology
USA

Hubert Gasteiger

Professor
Technical University of Munich
Germany

Jacob Haag

Group Leader
BASF
Canada

Jean-Christophe Daigle

Speaker Bio

Jean-Christophe Daigle completed a Ph. D. in polymer chemistry in 2013 under the supervision of Jérôme P. Claverie at University of Québec at Montréal. His thesis was on development of new polymers based on functional polyethylene. In 2013, he did a trainee in the University of New South Wales in Australia on emulsion polymerization of ethylene under high pressure of carbon dioxide under the guidance of Per Zetterlund. In 2014, he joined to Hydro-Québec for performing a postdoctoral fellow under the direction of Karim Zaghib in IREQ on the development of new polymers applied in batteries. He was a project leader in Esstalion Technologies, a joint venture between Sony Corp. (Murata) and Hydro-Québec, on the development of organic materials for Olivine-based batteries (LFP and LMFP) for energy storage (2014-2018). Currently, J.-C. Daigle is the head of polymers and organic synthesis research group of Hydro-Québec. Moreover, he is the lead researcher of the polymer solid-state battery development program. His main research area is the development of new organic materials, for their application in batteries. These new materials include functional polymers, organic ionic plastic crystals and organic additives. Over the years, he is cumulating more than 50 publications including scientific articles and patents.

Lecture: Implementation of Organic Ionic Plastic Crystal as Catholyte in a New Generation High-Energy Lithium Metal Polymer Battery

Ki Seok Koh,a Annie-Pier Larouche,a Frédéric Roussel,a Francis Barray,a David Lepagea
Chisu Kim,a Armand Soldera,b and Jean-Christophe Daigle*a

a Centre d’excellence en électrification des transports et stockage d’énergie, Hydro-Québec,
1806, Lionel-Boulet Blvd. Varennes, Québec J3X 1S1, Canada

b Laboratory of Physical-Chemistry of Matter (LPCM), Department of Chemistry, Université
de Sherbrooke, 2500 Boul. de l’Université, Sherbrooke, Québec J1K 2R1, Canada

In the race for the electrification of transportation, many companies are competing to develop
more efficient solid-state batteries for commercial applications. Since the landmark discovery
of using polyethylene oxide (PEO) as a lithium-ion carrier for lithium metal batteries by
Armand in 1978, solid-state batteries based on polymer electrolytes have been deeply
scrutinized;1 Viable commercial applications have been provided by Blue Solutions since
2011.2 Despite their many advantages, such as the ability to use lithium metal as a negative
electrode as well as reduced cell weight and enhanced overall safety, the use of polymer
electrolytes remains limited. Additionally, the low overall ionic conductivity and transport
number (t+), poor high-voltage stability, and elevated operating temperature remain obstacles
for their wide implementation in electric vehicles (EVs).

In this presentation, we outline our efforts to develop a high-energy and long-life cycle NMC
– Polymer Electrolyte - Li metal pouch cell. Major challenges are addressed in this pursuit,
including stability of OIPC in positive electrode with NMC, scale-up of the electrode and
performances of the broad range of temperatures.

Major achievement in Hydro-Québec’s development of a new generation high-energy lithium
metal battery was the development of new Organic Ionic Plastic Crystal (OIPC), which was
implemented as catholyte in the electrode formulation. Our new formulation allows the
continuous production of cathode electrode using conventional coating machines used in Liion
battery industry. OIPC is stable with NMC as cathode active material and the formulation
can be easily processed as a biface electrode. Furthermore, we investigated the mechanism of
diffusion involving OIPC, LiFSI and PVDF. The unique mechanism of diffusion opening the
path for developing a new generation of the positive electrode. Based on the unique properties
of the new OIPC family, we achieved high C-rate with a good capacity retention more than
500 cycles at C/6 – 1 C.3

References
1. Mauger, A.; Julien, C. M.; Goodenough, J. B.; Zaghib, K., Tribute to Michel Armand:
from Rocking Chair – Li-ion to Solid-State Lithium Batteries. Journal of The Electrochemical
Society 2020, 167 (7), 070507.
2. Xu, L.; Lu, Y.; Zhao, C.-Z.; Yuan, H.; Zhu, G.-L.; Hou, L.-P.; Zhang, Q.; Huang, J.-Q.,
Toward the Scale-Up of Solid-State Lithium Metal Batteries: The Gaps between Lab-Level
Cells and Practical Large-Format Batteries. Advanced Energy Materials 2021, 11 (4),
2002360.
3. Daigle, J.-C.; Barray, F.; Guerfi, A.; Fleutot, B.; Garitte, E.; Krachkovskiy, S.; Koh, K. S.
Ionic plastic crystals, compositions comprising same, methods for manufacturing same and
uses thereof. WO2022165598, 2022.

Jerry Barker

CEO
Redoxion Limited
United Kingdom

Speaker Bio

Jerry Barker received a PhD in solid state electrochemistry from the University of Exeter, UK. In his early career Jerry worked at British Petroleum (BP) and spent time at the University of California, Santa Barbara, (UCSB) collaborating with the Nobel prize winners Alan Heeger and Hideki Shirakawa on alkali-ion doped conducting polymers. As chief electrochemist at BPSolar he developed a process for the large-scale electrodeposition of II-VI semiconductors for photovoltaics applications.

Jerry is currently co-founder and Chief Scientist at Faradion Limited, a UK-based start-up specializing in Na-ion battery technology. Previously Jerry was Chief Scientist and Research Director at Valence Technology Inc.

Jerry has published extensively (h-index = 61, total citations >12,000) and is the named inventor on more than 115 issued US patents. These patents cover numerous alkali ion active materials as well as the Carbothermal Reduction (CTR) volume manufacturing method. The inventions have culminated in five commercially successful battery ventures and CTR is widely-regarded as the benchmark process for the large-scale synthesis of LiFePO4.

In 2012, Jerry was awarded the IBA Technology Award for his contributions to Li-ion battery materials. and received the ECS Europe Section Alessandro Volta Medal in October 2022 recognizing excellence in electrochemistry. He has appeared as a patent litigation expert witness in Europe and in North America. Jerry currently acts as an Expert Panel member for the UK’s Faraday Institution and sits on the advisory board for Australia’s storEnergy initiative. In 2019 Jerry was appointed Honorary Professor within the School of Chemistry at the University of St. Andrews, UK. To target the low-cost and sustainable Li-CAM supply chain, Jerry founded the start-up company, Redoxion Limited in 2022.

Lecture: New and Sustainable Synthesis Methods for the Volume Manufacture of LiFePO4 and LiFe1-xMnxPO4

Redoxion Limited, The Bagel Factory, 22 White Post Lane, London, E9 5SZ, United Kingdom

Lithium iron phosphate, LiFePO4 has gained wide acceptance as the cathode material of choice for safe, large format Li-ion battery applications. The market for LiFePO4 cathode powder is predicted to reach over $20 Bn by 2030 and there is a general trend towards this cell chemistry among global automotive companies [1]. Since LiFePO4 possesses a low intrinsic conductivity, carbon-coating methods or suitable preparative approaches must be employed to produce a composite product incorporating a conductive component [2]. The Carbothermal Reduction method for the large-scale synthesis of LiFePO4 has been adopted widely by the Li-ion industry over past 20 years [3,4].

In this study we describe new and sustainable solid-state synthesis methods for the volume manufacture of phase pure and highly conductive LiFePO4. These approaches utilize low-cost and earth-abundant Fe precursors and careful consideration has been given to ensuring a secure and reliable supply chain. These novel preparative methods are designed to use industry-standard equipment and production processes, while cost analysis confirms they will be cost-competitive with any currently employed manufacturing method.

In this presentation we will describe the physical and electrochemical performance characteristics of the synthesized LiFePO4 materials. Typically, the cathode material delivers close to theoretical performance and demonstrates extremely low-capacity fade on cycling. In addition, the active material operates with low polarization and with excellent columbic and energy (round-trip) efficiency.

Using an extension of this work, similar preparative approaches have been adopted to synthesize the second-generation material, lithium iron manganese phosphate, LiFe1-xMnxPO4, with particular emphasis being paid to delivering cathodes with Fe:Mn ratios optimized for commercial applications.

References:

[1]. For example, International Energy Agency (IEA) Report, Global Supply Chains for EV Batteries. 2023.

[2]. J. Barker, M.Y. Saidi and J.L. Swoyer, Electrochem. Solid-State Lett., 6, A53, 2003.

[3]. J. Barker, M.Y. Saidi and J.L. Swoyer, J. Electrochem.Soc. 150 (6), A684, 2003.

[4]. J. Barker, M.Y. Saidi and J.L. Swoyer, For example, US Patent 6,528.033 (Issued 2003), US Patent 6,702,961 (Issued 2004) and others. Assignee: Valence Technology Inc.

Jie Xiao

Battelle Fellow
Battery Materials & System Group at Pacific Northwest National Laboratory
USA

Speaker Bio

Dr. Jie Xiao is currently a Battelle Fellow and leads Battery Materials & System Group at Pacific Northwest National Laboratory (PNNL). She is also a PNNL-University of Washington distinguished faculty fellow. Dr. Xiao’s research spans from fundamental research, battery materials scaleup and manufacturing to cell fabrication and engineering for vehicle electrification and grid energy storage. She has published more than 100 peer-reviewed journal papers and been named top 1% Clarivate Analytics Highly Cited Researcher since 2017. She holds seventeen patents in the area of energy storage area and seven of them have been licensed to industry. She is the recipient of a few awards such as US Department of Energy’s E. O. Lawrence Award, Battelle Distinguished Inventor and Fellow of The Electrochemical Society etc.

Lecture: An Integrated Science and Engineering Approach for Next-Generation EV Battery Materials and Technologies

Identifying and addressing material challenges at industry-relevant scales and validation of new battery chemistries under realistic conditions critically determine the timeliness and success of materials development, manufacturing, and technology translation from academic research to industry applications in the US. There remains to be a large gap between academic research, materials scale-up/manufacturing, and device level performance optimization.

This talk will review the challenges, opportunities, and approaches for accelerating R&D and manufacturing processes of next generation materials and battery technologies. I will highlight the importance of interdisciplinary research in electrochemical energy storage and emphasize the necessity to identify and address scientific challenges at relevant scales/conditions.  Two specific examples will be discussed: (1) an integrated electrochemistry and engineering approach to utilize lithium metal anode and enable high-energy rechargeable lithium metal battery, (2) the study of single crystal Ni-rich cathode for Li-ion and Li metal batteries. Scaling up single crystal cathode will be used as an example to shed some light on the importance of integrated science and engineering methodology for battery materials development and manufacturing.

 

Judy Jeevarajan

Vice President and Executive Director
Electrochemical Safety Research Institute (ESRI)

Speaker Bio

Dr. Judy Jeevarajan is the Vice President and Executive Director for the Electrochemical Safety Research Institute (ESRI) at UL Research Institutes (ULRI). With more than 27 years of experience in the area of batteries and a primary focus on the lithium-ion chemistry, she specializes in battery safety research that encompasses various aspects from thermal runaway to fire suppression and recycling.

 

Dr. Jeevarajan serves in the Technical Working Group for standards organizations such as UL Standards & Engagement (ULSE), Society of Automotive Engineers (SAE), International Civil Aviation Organization (ICAO)/Society of Aerospace Engineers (SAE), International Electrotechnical Commission (IEC), American Institute of Aeronautics and Astronautics (AIAA) and American National Standards Institute (ANSI).

 

From 1998 until 2003, Dr. Jeevarajan worked for Lockheed Martin Space Operations at the National Aeronautics and Space Administration (NASA) Johnson Space Center (JSC) in Houston, Texas. In 2003, she started her work as a NASA civil servant, serving as the Group Lead for Battery Safety and Advanced Technology.

 

Dr. Jeevarajan has been an active advocate of battery safety at meetings and conferences with over 175 presentations in the area of battery safety. She has also authored or co-authored several book chapters, including the “Battery Safety” chapter in Elsevier’s publication titled “Safety Design for Space Systems” in March 2009 (first edition) and July 2023 (second edition), and the “Managing of Risk by Manufacturers of Consumer Equipment” chapter in Elsevier’s “Electrochemical Power Sources: Fundamentals, Systems, and Applications” in September 2018. She continues to contribute to many journal publications and articles. She serves as a reviewer for many major journals and is a Co-Editor for the ACS Energy Letters journal publications.

 

She earned her Ph.D. in Chemistry (Electrochemistry) from the University of Alabama in Tuscaloosa (1995) and holds a Master of Science in Chemistry from the University of Notre Dame (1991).

Lecture: Characterization of Performance and Safety of Commercial Na-ion Cells

The Electrochemical Safety Research Institute (ESRI) has been carrying out safety and performance characterization tests on commercial sodium-ion cells. Cells from two manufacturers were procured. The operating voltage of cells from manufacturer A was 1.5 V to 3.95 V and from manufacturer B was 1.5 V to 4.1 V. Single cells were subjected to overcharge, overdischarge, external short circuit and heating tests to characterize their performance under these off-nominal conditions. Cells were also connected in series to form 12 V and 48 V modules to study the off-nominal behavior in multi-cell configurations. Electrodes in the commercial cells were analyzed for composition and it was found that apart from sodium, the cathodes contained metal additives such as Li, Mn, Mg, Al, Ni, Fe and V for manufacturer A and Li, Mg, Mn, Fe, V, Ni and Zr for manufacturer B. The cells from manufacturer A were tolerant to overcharge, overdischarge and external short tests. The cells from manufacturer B had one cell that vented electrolyte under the overcharge test but had similar behavior to manufacturer A for the overdischarge and external short tests. Under the heating tests, cells from manufacturer A experienced thermal runaway with extrusion of cell contents at about 149 °C and while those for manufacturer B experienced thermal runaway at about 139 °C with maximum temperatures recorded being 305 and 450 °C respectively (Figure 1). The results of the performance of the single cells under two different rates as well as the results of the safety tests at the module level will also be presented.

Kang Xu

Chief Scientist
Solid Energy Systems
USA

Speaker Bio

Kang Xu is an MRS Fellow, ECS Fellow, ARL Fellow (emeritus), and former team leader at Battery Science Branch of DEVCOMM Army Research Laboratory in Adelphi, Maryland. He received Ph. D. in Chemistry under the tutelage of Prof. Austen Angell at Arizona State University, and has been conducting electrolytes and interphasial chemistry research for the past 30 years. He has published 300+ papers, wrote/edited 5 books/chapters, and obtained 20+ US Patents, with total citation of 62,000+ and an h-index of 122. He is a Clarivate’s highly-cited author, and one of the top 2% most influential researchers in the Stanford Database.

Besides the numerous publications, he is best known in the field for the two comprehensive reviews published at Chemical Reviews in 2004 and 2014, and a book entitled “Electrolytes, Interfaces and Interphases” published by RSC Press in April 2023. His work has received many recognitions and awards within DoD and in the field, including multiple Depart of the Army R&D Awards, the 2015 UMD Invention of the Year, 2017 International Battery Association Technology Award, and 2018 ECS Battery Research Award. Upon his retirement from federal service 2023, he received an Army Civilian Service Medal.

 In 2023 Summer, he joined SES AI Corp and serves as its Chief Scientist.

Lecture: Designing Better Electrolytes and Interphases in Batteries

Electrolyte plays the central role in all electrochemical devices, and it is the only component in such devices that physically interacts with every other component, be it electrochemically active (anode and cathode) or inert component (separator, substrate, binder, conducting additive, packaging etc.). Whenever there is interaction, an interface arises, and whenever such interaction occurs at electrochemical potential far away from the thermodynamic equilibria, an interphase becomes evitable.

This talk will summarize my recent work in designing better interphases for advanced battery chemistries, be it Li-ion, Li-metal or other battery chemistries.

Dr. Laurence Croguennec (ICMCB-CNRS)

CNRS Research Director
Institut de Chimie de la Matière Condensée
France

Speaker Bio

Laurence Croguennec is a CNRS Research Director at the Institut de Chimie de la Matière Condensée (ICMCB-CNRS, France) at the Bordeaux University. She graduated (PhD) in 1996 from Nantes University at the Institut des Matériaux Jean Rouxel (France) and spent one year as a Post-Doc at the Bonn University (Germany). She became CNRS researcher at ICMCB in 1997, led the research group “Energy: Materials and Batteries” between 2004 and 2021 and is Deputy Director of ICMCB since 2022. She is also actively involved in the French Network on the Electrochemical Energy Storage (RS2E), in the ALISTORE European Research Institute devoted to battery research and in the France 2030 acceleration program with the PEPR batteries.

Laurence Croguennec has been working for more than 25 years now on the crystal chemistry of electrode materials developed for Metal-ion batteries, and more recently all-solid-state batteries, and on the characterization of mechanisms involved upon their cycling, especially for layered and spinel oxides and polyanionic-type positive electrode materials. She develops also research in collaboration with European neutrons and synchrotron large scale facilities for in situ and operando characterization of materials during the operation of the batteries. She is the co-author of more than 160 publications, 5 book chapters and 5 patents in this field; she delivered more than 80 invited talks, and organized 18 international and 7 national meetings or symposiums.

Lecture: Solid state chemistry, a source of innovations in the metal-ion batteries' field

During this talk, I will highlight about new attractive phases and mechanisms identified in the systems Na3V2(PO4)3 and KVPO4F1-yOy, as well as about the key role of defects and extent of ordering on the electrochemical performance of high-voltage spinel:

  • A new class of NASICON phases NaxV2(PO4)3 has been obtained. On the contrary to conventional Na3V2(PO4)3, a slopping voltage profile is obtained at a higher voltage of 3.6 V vs. Na+/Na, with an extremely small polarization and great capacity retention.
  • New potassium and vanadium oxyfluoride phosphates of the KTiOPO4 structural type and with a chemical composition KVPO4F1-yOy (0 ≤ y ≤ 1) have been synthetized. In particular, the compound KVPO4F5O0.5 is promising.
  • The unique ability to tune the primary particle morphology, spinel composition and secondary phase generation in spinel LiNi1/2-xMn3/2+xO4 will be demonstrated. 4D-STEM was used to dissect the structure at the nanometric spatial resolution, and heterogeneity in the transition metal arrangement of the globally ordered (P4332) LiNi1/2Mn3/2O4 was shown beneficial for electrochemical performance.

I will demonstrate that only the in-depth control of the relationship synthesis/composition/atomic and electronic structure allows to tune the properties in the battery.

  • Keywords

Metal-ion batteries, positive electrode materials, polyanionic materials, high voltage spinel oxides, structural and redox processes

Lauren Marbella

Associate Professor
Columbia University
New York

Speaker Bio

Lauren Marbella is an Associate Professor in the Department of Chemical Engineering at Columbia University. Her research group focuses on understanding the relationship between electrochemical performance and interfacial chemistry in devices for energy storage and conversion. Her research relies heavily on the use of nuclear magnetic resonance imaging (MRI) and spectroscopy to evaluate changes in material properties in real time to elucidate the chemical mechanisms underpinning degradation in Li and beyond Li-ion battery systems. Marbella’s research has received numerous awards including the ACS Materials Au Rising Stars in Materials Research Award (2022), Cottrell Scholar Award (2022), the National Science Foundation (NSF) Faculty Early Career Development (CAREER) Award (2021), and the Scialog Collaborative Innovation Award for Advanced Energy Storage (Sloan Foundation, 2019).

She received her PhD in chemistry from the University of Pittsburgh in 2016, under the direction of Prof. Jill Millstone. In 2017, she was named a Marie Curie Postdoctoral Fellow at the University of Cambridge in the group of Prof. Clare Grey. There, she was also named the Charles and Katharine Darwin Research Fellow, which recognizes the top junior fellow at Darwin College at the University of Cambridge. She joined the chemical engineering faculty at Columbia University in 2018.

Lecture: Linking structure to function at electrochemical interfaces: Li-ion and beyond

Despite the fact that the solid electrolyte interphase (SEI) on Li metal was described 45 years ago, it is still the only aspect of the battery that has ambiguity in function. As a community, we have struggled to establish structure-property-performance relationships for the SEI because it is a nanoscale composite that contains chemical compounds whose properties deviate from their bulk counterparts. In this talk, I will describe how we have used nuclear magnetic resonance (NMR) spectroscopy to characterize the structure and dynamics of interfacial phenomena in Li-ion and beyond Li-ion batteries and correlate these features with battery performance. In particular, I will focus on the use of NMR to quantify the source of Li inventory loss, the mechanism of transition metal dissolution, structural evolution at the electrode/electrolyte interface, and the function of the SEI. Insight from these methods allow us to determine the precise mechanisms of failure that arise inside of functional devices as well as develop new approaches to mitigate performance decline.

Margaud Lécuyer

Head of Electrochemistry Innovation
Blue Solutions Bollore
France

Speaker Bio

Margaud Lécuyer is Head of Electrochemistry Innovation at Blue Solutions, a subsidiary of the Bolloré Group and global designer and manufacturer of all-solid-state batteries. She joined the company in 2010.

Since 2017, she has been in charge of innovation topics, overseeing the development of new chemistry and materials to be incorporated in future generations of cells. Among other tasks, she designs and monitors R&D projects, actively pursues funding and partnerships, promotes new technologies among OEMs, manages the laboratory and supervises staff. She was previously responsible for production monitoring, acting as interface between the R&D, production, and quality departments, and was tasked with approving battery packs.

Margaud Lécuyer has an engineering degree from ESPCI Paris, specializing in physics, and a PhD in materials chemistry from the Institut des Matériaux Jean Rouxel in Nantes, focusing on lithium-sulfur and lithium-organic batteries.

Lecture: Blue Solutions on the way to deliver Lithium Metal batteries for eV market

Blue Solutions is already known as the pioneer company in the field of solid-state batteries, having put on the market Lithium Metal Polymer batteries since 2011. However, previous generations only addressed heavy duty applications, with their high working temperature, around 80°C. Currently, we are preparing next generation by developing a new electrolyte chemistry. This electrolyte is still polymer-based but delivers a sufficiently high ionic conductivity at room-temperature. In addition to that, Blue Solutions latest strategy has been to develop in parallel three different options based on three active materials, allowing to address all the passenger car segments, from basic to premium cars. In this talk we will share the latest results got with this 4th generation under optimization, and our roadmap until final industrial volumes.

Mark Obrovac

Researcher
Dalhousie University
Canada

Speaker Bio

Dr. Obrovac has a BSc in Chemical Physics (Simon Fraser University, 1995), a MSc in Physics (Dalhousie University, 1997), a PhD in Physics (Dalhousie University, 2001), and was a Postdoctoral Fellow in Chemistry at Cornell University (2001-2002). In 2002, Dr. Obrovac joined 3M Company, St. Paul Minnesota, as a Research Specialist and Li-ion Battery Anode Materials Project Leader. There he was responsible for new battery materials research, development, scale-up, and manufacture. In 2010, Dr. Obrovac became professor of Chemistry at Dalhousie University with cross appointments to the Departments of Physics and Process Engineering and Applied Science. Dr. Obrovac's research group at Dalhousie University conducts research on sustainable Li-ion and Na-ion battery materials and their synthesis methods.

Lecture: Advances in All-Dry Processing Methods for Li-ion Battery Materials Synthesis

Dry processes have emerged as important synthesis methods for Li-ion battery materials because of their low cost and sustainability. Dry processes can also make new and unique materials. Recent interest in dry processing has led to new methods that can synthesize engineered particles with morphologies that are not accessible by other means, leading to further advances in Li-ion battery materials development. As examples, we have recently shown that single-crystal NMC cathodes may be made using all-dry methods and we have also shown that by applying dry mechanofusion processing, low surface area LiFePO4 cathode can be made that can achieve >30% higher energy density than conventional materials. This presentation will summarize advances in all-dry processing for cathode and anode materials synthesis, including the utilization of mechanofusion processing to make coated particles, embedded particles, and high energy density cathode particles.

Matthieu Morcrette

Tiamat Energy
France

Mauro Pasta

Position Professor of Applied Electrochemistry
Affiliation University of Oxford, Department of Materials
United Kingdom

Speaker Bio

Prof. Mauro Pasta is Professor of Applied Electrochemistry in the Department of Materials at the University of Oxford. He currently serves as the Principal Investigator of the SOLBAT (solid-state batteries) project as part of The Faraday Institution. His research interests encompass electrochemistry and materials chemistry, with a primary focus on developing innovative materials for electrochemical energy storage. As a co-founder of three battery startup companies, Natron Energy, Cuberg and Project K, Prof. Pasta is dedicated to translating his research into real-world solutions.

Lecture: Potassium-ion batteries: progress and outlook

Potassium-ion batteries are emerging as a promising complementary technology to lithium-ion batteries due to their prospective low cost and potential high-rate capability1. In my talk, I will discuss the progress our group has made in characterising the transport and thermodynamic properties of K-ion electrolytes2, the structure-electrochemistry relationship in Prussian Blue analogue cathodes and graphite anodes3,4, and in modelling full cell performance5.

References

  1. Dhir, S., Wheeler, S., Capone, I. & Pasta, M. Outlook on K-Ion Batteries. Chem 6, 2442–2460 (2020).
  2. Dhir, S., Jagger, B., Maguire, A. & Pasta, M. Fundamental investigations on the ionic transport and thermodynamic properties of non-aqueous potassium-ion electrolytes. Nat. Commun. 14, 3833 (2023).
  3. Cattermull, J., Pasta, M. & Goodwin, A. L. Structural complexity in Prussian blue analogues. Materials Horizons vol. 8 3178–3186 (2021).
  4. Cattermull, J., Roth, N., Cassidy, S., Pasta, M. & Goodwin, A. K-ion slides in Prussian Blue Analogues (2023).

5.         Dhir, S. et al. Characterisation and Modelling of Potassium-ion Batteries. Research Square (2024).

Dr. Michel Armand

Professor Emeritus
France

Speaker Bio

Prof. Dr. Michel Armand received his Ph.D. in Physics from University Joseph Fourier (France) in 1978. He was Director for Research at the Centre National de la Recherche Scientifique (CNRS, France) since 1989 and Professor at University of Montreal (1995−2004). He has ushered theoretical concepts and new materials leading to practical applications in energy-related electrochemistry. He has been one of the pioneers of the use of intercalation electrodes (1972), and ushered the concept of “rocking chair” batteries using a second intercalation compound at the negative electrode, which will become known as the lithium-ion. He has introduced polymer electrolytes (1978) which are now used in the first commercial solid-state battery in application, new salts based on delocalized anions, of the sulfonimide family like TFSI or FSI (1986), widely used in batteries and the base for ionic liquids; he developed the first organic electrode materials (1996) and the carbon coating for LiFePO4, making it the most popular and safest electrode materials in battery production. He joined CIC Energigune in 2011, and present activities include new solvating polymers for lithium and sodium, lithium sulfur batteries, and several new salts. Michel Armand has been an author or a co-author for > 500 publications while contributing to 16 book chapters, has a H factor of 110 and his work has been quoted > 95000 times. He is the recipient of several distinctions and honours including the silver medal (CNRS), the Faraday Division Award from the Royal Society (UK), the Pergamon and Volta gold medals. Michel Armand is an ECS Fellow.

Lecture: Are Polymers Still Contenders for the All-Solid-State Battery?

Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research
and Technology Alliance (BRTA), Álava Technology Park, Albert Einstein 48, 01510 Vitoria-
Gasteiz, Spain. [email protected]
Lithium and sodium batteries, the first with an established market and the second with a
foreseen future in grid storage at least, are likely to see a dramatic increase in volumes produced,
in term of tens of million tons. Solid Electrolytes (SEs) are seen as a possible solution for
harnessing the metal (Li°, Na°) negative electrode. Already, polymer electrolytes are
successfully implemented in batteries comprising the sequence Li°| PEO electrolyte| LiFePO4
by the company Blue Solutions. Only a moderate pressure is needed to operate the lithium metal
electrode (≈ 2 bars) due to the ad-hoc mechanical properties and adhesion of the polymer.
Ceramic electrolytes (Argyrodite, garnets…) have conductivities 3 orders of magnitude higher
at room temperature but need enormous pressures (tens of bars) to operate to accommodate the
volume changes inherent to mass transfer at the electrodes.
The race to improve the conductivity of polymers at room temperature is two-pronged: i)
staying with dry polymer electrolytes (solvent-free), in a change of polymer architecture; ii)
resorting to gels, i.e. the plasticization of a polymer matrix with a liquid polar solvent. The first
strategy is based on either comb polymers with improved chain flexibility, but these systems
are still “coupled”, i.e. the ion mobility is varying in the same way as the microscopic viscosity,
above Tg. Interestingly, poly(zwitterions) as a host matrix are newly appearing as decoupled
systems, combining excellent mechanical properties and decent conductivities. Gels, on the
other hand, can reach high conductivities and the polymer is mostly conferring the mechanical
properties, but the problem of SEI/CEI formation and crosstalk between the electrodes is
reminiscent of that seen in liquid electrolytes.
All these strategies will be appraised in detail in this presentation.

Misae Otoyama

Senior Reseracher
National Institute of Advanced Industrial Science and Technology (AIST)
Japan

Speaker Bio

Dr. Misae Otoyama is a senior researcher in the Department of Energy and Environment at National Institute of Advanced Industrial Science and Technology (AIST). She joined Advanced Electrochemical Device Research Group at AIST in 2020. Her research interests include materials chemistry and electrochemistry with a particular emphasis on development and characterization of all-solid-state batteries and solid electrolytes. She is a member of the national research projects for next-generation batteries: ALCA-SPRING (2020–2023), SOLiD-EV (2021–2023), and GteX (2023–present).

When she was a doctoral student, she joined the Prof. Jean-Marie Tarascon’s lab at the Collège de France as a visiting researcher and studied on synthesis and electrochemical activity of Na(Li)-rich ruthenium oxides (2017–2018). She received her Ph.D. degree in engineering from Osaka Prefecture University with her doctoral thesis entitled “Reaction Analyses of Composite Electrodes for Designing High Performance All-Solid-State Lithium Batteries” in 2020.

Among her several awards, she was the youngest researcher to receive the award from the committee of battery technology at the 60th battery symposium in Japan (2019). She was also the recipient of the 10th Japan Society for the Promotion of Science (JSPS) Ikushi Prize as an outstanding doctoral student who can be expected to contribute to Japan’s future scientific advancement (2020).

Lecture: Mechanochemical Synthesis and Characterization of LixVSy Metal Polysulfide Positive Electrodes for High Energy All-Solid-State Batteries

All-solid-state lithium sulfur batteries are attracted much attention as promising next-generation energy storage devices because of their high theoretical energy density. Metal polysulfide positive electrodes LixVSy (x = 5–9, y = 4–6) were synthesized by mechanochemical treatment of Li2S and V2S3. XRD, XAFS and TEM measurements revealed that LixVSy electrodes were consisted of nanocomposite of Li2S and LiVS2. Although Li2S is an insulator, LixVSy electrodes show high electronic conductivity of 10−1–10−2 S cm−1 because they contain LiVS2 with a high electronic conductivity. All-solid-state cells with composite positive electrodes of Li8VS5.5 and solid electrolytes at 80:20 (wt%) showed over 740 mAh g−1, which was 98% of the theoretical capacity. The cells with LixVSy need no conductive additives because of its high electronic conductivity. From the results of XRD and XAFS measurements of LixVSy electrodes before and after charge-discharge tests, delithiation and lithiation proceeded reversibly at Li2S and LiVS2. DSC measurements exhibited total heat of LixVSy was smaller than that of NCM electrodes. LixVSy is a promising positive electrode for high energy all-solid-state batteries because it shows a high capacity with high loading and fine thermal stability.

Nae-Lih Wu

Professor
National Taiwan University
Taiwan

Speaker Bio

Dr. Nae-Lih Wu is a tenured University Distinguished Professor at the Chemical Engineering Department, National Taiwan University, and serving as associate editor of the Electrochemical Society journals. His research interests include (1) electrochemical energy storage devices, including supercapacitors and rechargeable batteries; (2) nano-materials synthesis and applications; and (3) advanced synchrotron X-ray spectroscopy analyses for energy materials. His current research on Li-ion batteries focuses on active material interface engineering for fast charging and enhanced safety and the development of all-solid-state Li-ion batteries.

Lecture: Chemically Reinforced Cathode-Solid Electrolyte Interface Enhances Cycle Stability of Composite Cathodes in All-Solid-State Li-Ion Batteries

All-solid-state lithium-ion batteries (ASSLIBs) have been considered suitable alternatives to commercial lithium-ion batteries (LIBs) in the aspect of safety issues that come from the use of inflammable solid electrolytes to replace organic flammable electrolytes. Nevertheless, there remains much room for a better understanding of their properties and behaviors to upgrade their performance to reach the practical application level. Ni-rich layered oxides, LiNi1-x-yCoxMnyO2 (NCM), are promising cathodes for high-energy ASSLIBs because of their high capacities and redox potentials, and low material cost when compared with conventional LiCoO2. However, certain challenges associated with their use in ASSLIBs must be addressed for their effective use and industrialization. In particular, the structural integrity of the all-solid-state NCM composite electrodes suffers from not only intragranular cracks but also debonding at the cathode-solid electrolyte (SE) interface. The latter constitutes the major cause of fast capacity fade. To overcome this problem, it is a common practice to apply very high stacking pressure, typically higher than several tens MPa, on the ASSLIBs during operation. Lowering the battery operation stacking pressure, for example, to the level of the liquid-electrolyte batteries will certainly facilitate the wider applications of ASSLIBs. Using the composite cathode consisting of a LiNi0.83Co0.12Mn0.05O2 (NCM811) cathode and brittle Li3InCl6 (LIC) solid electrolyte (SE), this study demonstrates that forming a chemically fused cathode-solid electrolyte interface via limited interfacial reactions may serve as an effective means to mitigate interface debonding so as to enable ASSLIBs to maintain long-term operation under reduced stacking pressures.

Naoaki Yabuuchi

Professor
Yokohama National University
Japan

Speaker Bio

Naoaki Yabuuchi is a professor at Yokohama National University.  He completed his PhD at Osaka City University in 2006 and his postdoc at MIT, with research expertise in the development of new electrode materials and study on reaction mechanisms for high energy Li/Na batteries.  He has over 130 publications in these areas.  He is a fellow of the Royal Society of Chemistry and an associated editor of Energy Storage Materials. He is the recipient of First International Award, “Science Award Electrochemistry” by Volkswagen and BASF, The 2nd ISSI Young Scientist Award, and ISE Prize for Applied Electrochemistry, The Periodic Table of Younger Chemists (Niobium) from The International Union of Pure and Applied Chemistry (IUPAC) among other honors.

Lecture: Nanostructured Lithium Insertion Materials for Practical Battery Applications

Ni-enriched layered materials are used as electrode materials of Li-ion batteries for electric vehicle applications. Stoichiometric LiNiO2 with cationic Ni3+/Ni4+ redox is the ideal electrode material, but the gradual loss of capacity at the high voltage region, associated with Ni ion migration, hinders its use for practical applications.1 Recently, the importance of non-stoichiometry and anti-site defects is discussed for LiNiO2, and highly reversible pure Ni-based layered materials without metal substitution is successfully developed through defects engineering.1 

Another important target is the development of a practical and high-energy Co-/Ni-free Mn-based positive electrode material, which is necessary for the economical electric vehicles. Nanostructured Mn-based electrode materials are proposed as emerging materials for this purpose.2 However, these materials are generally synthesized by high-energy milling, which cannot be adopted for mass production. Recently, nanostructured LiMnO2 with high-energy density (~800 Wh kg–1) is successfully synthesized by using a conventional calcination reaction, which is potentially used for economical electric vehicle applications.3

To develop safe and high-energy Li-ion batteries, the use of solid electrolyte is an important strategy. Nevertheless, inevitable volume changes of electrode materials on cycling lead to the difficulty to maintain the stable interface between electrode materials and electrolyte. Recently, a nanostructured cation-disordered rocksalt oxide with a dimensionally invariable character is developed. Indeed, the excellent reversibility with solid electrolyte is achieved.5

From these results, the importance of nano-structured lithium insertion materials for practical Li-ion battery applications is discussed.

References

  1. Konuma et al., and N. Yabuuchi, Energy Storage Materials, 66, 103200 (2024).
  2. Kanno et al., and N. Yabuuchi, ACS Energy Letters, 8, 2753 (2023).
  3. Miyaoka et al., and N. Yabuuchi, submitted
  4. R. Fukuma et al., and N. Yabuuchi, ACS Central Science, 8, 775 (2022).
  5. I. Konuma et al., and N. Yabuuchi, Nature Materials, 22, 225 (2023).

Professor Sir Peter Bruce, FRS

Wolfson Professor of Materials
University of Oxford
United Kingdom

Speaker Bio

Professor Sir Peter Bruce FRS is the Wolfson Professor of Materials at the University of Oxford and Chief Scientist of the Faraday Institution.

Peter’s research interests embrace materials chemistry and electrochemistry, with a particular emphasis on energy storage, especially lithium and sodium batteries. Recent efforts have focused on revealing the fundamental mechanisms occurring in solid-state batteries and developing strategies to mitigate issues at the interfaces, understanding anomalous oxygen redox in high capacity Li-ion cathodes, and the challenges of the lithium-air battery.

Peter’s research has been recognised with a number of prestigious awards and fellowships, including from the Royal Society of Chemistry, the Electrochemical Society and the German Chemical Society. He has been named as a Highly Cited Researcher by Thomson Reuters/Clarivate every year since 2015. Between 2018 and 2023 he served as the Physical Secretary and Vice-President of the Royal Society (UK’s national science academy). In the 2022 Birthday Honours List, Peter received a knighthood for his services to science and innovation.

Lecture: Design Strategies of Li-ion Battery Cathode Materials for Enhanced Safety and Performance

Solid-state batteries based on a ceramic electrolyte and lithium metal anode have the potential to improve battery safety and energy density, but both charging and discharging rates are limited to below what is required. On discharge, voids form in the lithium metal at the Li/solid electrolyte interface due to limited Li metal creep at practical stack pressures and under practical current densities. These voids accumulate on cycling, leading to detachment of the Li anode and consequently high local currents during charge, triggering the growth of dendrites (filaments of Li metal that penetrate the ceramic electrolyte) resulting in short-circuit and cell failure.

Furthermore, even without any prior voiding, charging currents are limited to levels too low for practical applications by dendrite formation. Important efforts are being made to understand dendrites in ceramic electrolytes and to mitigate them.

We describe the formation and progression of lithium dendrites, informed by observing dendritic cracks operando using X-ray computed tomography (XCT). Dendrites are found to follow a two-stage process of initiation then propagation, with distinct mechanisms for each. Initiation occurs in sub-surface pores where pressure builds to exceed the local fracture strength at the grain boundaries, by the mechanism of slow lithium extrusion. Propagation involves dry cracks, with Li driving the crack forward from the rear by a wedge-opening mechanism, rather than lithium at the crack tip, as had often been assumed previously. Informed by the description of dendrite cracks, we investigated the relationship between the microstructure of the solid electrolyte and the critical current at and above which dendrites form. We show that by controlling the microstructure of the Argyrodite (Li6PS5Cl) solid electrolyte the critical current for dendrite formation can be determined. We also discuss the effect of contouring or roughening the lithium/solid electrolyte interface and the extent to which doing so can increase the critical current for dendrites.

Philip Adelhelm

Professor of Physical Chemistry and Electrochemistry
Humboldt-University
Germany

Speaker Bio

Philipp Adelhelm is Professor of Physical Chemistry and Electrochemistry at Humboldt-University Berlin, Germany, and has been working on inorganic electrode materials for sodium-ion batteries since 2010. Currently, his main interests are layered materials (oxides, sulfides, graphite) and metals, and operando/in-situ tools such as optical microscopy, dilatometry, DEMS, and synchrotron methods. He is co-editor of the book “Sodium-Ion Batteries: Materials, Characterization, and Technology” (Wiley-VCH, 2022, Titirici/Adelhelm/Hu) and leads a joint research group on operando battery analysis between Humboldt-University Berlin and Helmholtz-Zentrum Berlin (HZB).

Lecture: DESIGN OF LAYERED ELECTRODE MATERIALS FOR NA-ION BATTERIES BY DOPING AND SOLVENT CO-INTERCALATION

Layered materials are the foundation of modern Li-ion battery technology and are also used in the Na-ion batteries currently entering the market.[1],[2] A very successful strategy for tuning the properties of layered oxides is to change their composition, e.g. moving from LiCoO2 to NMC or NCA chemistries. This approach, along with understanding the redox activity of oxygen, is also currently a hot topic for Na-ion batteries too. Understanding the effects of doping / chemical substitution of layered oxides is complicated and requires a variety of analytical tools including synchrotron-based methods as well as theory, for example[3],[4]. A second, much less explored strategy for tuning the properties of layered materials is the co-intercalation of solvent molecules. An excellent example is the intercalation of solvated Na-ions into graphite, leading to the family of so-called ternary (or quaternary) graphite intercalation compounds. The use of co-intercalation in electrode reactions opens up a very diverse field of research, but at the same time there are also challenges that can be studied using, for example, operando electrochemical microscopy and operando electrochemical dilatometry. The talk will also present a new model for the formation of these compounds, which is very different from previous assumptions.[5] Recently, the concept of solvent co-intercalation has also been demonstrated for a layered sulfide, suggesting that also cathode materials may be tuned by co-intercalation.[6]

[1] Sodium-ion batteries: Materials, Characterization and Technology ISBN: 978-3-527-34709-4, Wiley Dec 2022, Titirici/Adelhelm/Hu (Editors)

[2] P. Nayak et al. Angew. Chemie. Int. Ed., 2018, DOI: 10.1002/anie.201703772

[3] L. Yang et al. Adv. Functional Materials, 2021, DOI: 10.1002/adfm.202102939

[4] Y. Li et al., Adv. Materials 2024, DOI: 10.1002/adma.202309842

[5] G. Avall et al. Adv. Energy Materials, 2023, DOI: 10.1002/aenm.202301944

[6] G. Ferrero et al. Adv. Energy Materials, 2022, DOI: 10.1002/aenm.202202377

Palani Balaya, FACerS

Associate Professor
National University of Singapore
Singapore

Speaker Bio

Before moving to National University of Singapore, Dr. Palani Balaya worked as a Guest Scientist (2001-2006) at Max Planck Institute for Solid State Research, Stuttgart in the area of Nano-ionics. He joined Department of Mechanical Engineering at College of Design and Engineering, NUS as an Assistant Professor in 2007. Since 2014, he works as an Associate Professor at NUS. His research area includes developing safe high-power lithium-ion battery and sodium-ion battery. He served as a Topical (Battery, Fuel Cell, Capacitor) Editor for Journal of Solid-State Electrochemistry (2013-2017). Since 2022, serving as Associate Editor for the International Journal of Applied Ceramic Technology (Wiley), Editorial Board Member of Ceramics International (Elsevier, since 2022) and for journal, Batteries (MDPI, since 2022). Elected as an Academician by the World Academy of Ceramics, Italy (2019) and elected as a Fellow of the American Ceramic Society (ACerS) in 2019. Recognized as an ACerS Global Ambassador in 2016, recipient of Global Star Award (2015) from ACerS, Late Shri Har Mahandar Singh Chhatwal Memorial Award (2015) from Indian Ceramic Society (ICS), M.G. Bhagat Memorial Lecture Award (2021) from ICS, etc. He served in Inter-governmental Panel on Climate Change as a Co-ordinating Lead Author for preparing a Special Report on Renewable Energy Sources and Climate Change Mitigation, in 2011. He served as the Chair of the Engineering Ceramic Division of ACerS (2022-23). Delivered more than 150 talks (Plenary/Keynote/Invited) at international conferences/meetings. Published 114 articles with h-index of 48 and citations of ~10500 (GS). 

Lecture: Design Strategies of Li-ion Battery Cathode Materials for Enhanced Safety and Performance

Recent fire incidents involving state-of-the-art Li-ion battery (LIB) systems underscore the imperative to prioritize safety improvements. While precise cause of thermal runaway still remains debatable, internal shorting within the cells when subjected to electrical, thermal and mechanical stresses is indeed a key factor.

This presentation delves into the critical issue of excess heat generation in LIBs. We report our findings on two commonly employed Li-ion cells using oxide-based cathodes (Ni-rich NMC or NCA cells) and carbon-coated LiFePO4 cathode (LFP cells) with graphite anode. Notably, our investigation reveals a significant correlation between heat generation and internal resistance. Among various contributions to internal resistance, authors show that the charge transfer resistance as well as Li diffusion at the cathodes seem to be the major sources causing unwanted Joule heating.

This talk will address various means of reducing internal resistance across different cell chemistries thus minimizing heat generation to assure safe operation of Li-ion cells especially at high rates. The following case studies will be presented, demonstrating their effectiveness in improving both performance and safety:

  1. Integrating nano-size LFP along with carbon coating improves charge transfer reaction in LFP cells as compared to micron size oxide-based cathodes.
  2. Utilizing a controlled synthesis technique to create nanostructured mesoporous LFP increases anti-site defect concentration. This Li-Fe defect enhances the 2 – D Li diffusion by more than an order of magnitude which helps to suppress voltage polarization substantially at high C rates.
  3. Doping Mg at Fe site in LiMnFePO4 (LMFP) solid solution effectively helps in improving Li diffusion which results in reduced heat generation and enhanced storage performance.

Full cell data using LMFP vs titanate based anode materials will be presented to further emphasize their potential for enhancing Li-ion battery safety.

Rana Mohtadi

Senior Principal Scientist
Toyota Research Institute of North America
USA

Speaker Bio

Dr. Rana Mohtadi is a Senior Principal Scientist at the materials research department at Toyota Research Institute of North America TRINA and has been in the decarbonization R&D field for over two decades. She has been spearheading and leading research for the creation, design and demonstration of transformative materials for chemical and electrochemical energy storage technologies, including the research of novel battery electrolyte chemistries for liquid and solid state batteries, and has contributed important advancements in these areas. She has published influential research and has been awarded over 30 patents. Notable recognitions include receiving the R&D100 award (2011) and being named in “40 under 40” by the Automotive News (2014) and Crain’s Detroit Business (2014). She was recognized and showcased in the “We Run on Brain Power” initiative by the State Governor in 2015 as a face of innovation in the State of Michigan, USA. More recently, she was elected to serve as Chair for the Metal-Hydrogen Systems Gordon Research Conference (2025).  Dr. Mohtadi also acts as a Principal Investigator at the Advanced Institute for Materials Research AIMR at Tohoku University in Japan (Researcher | AIMR (tohoku.ac.jp)).

Lecture: Liquid electrolytes, solid electrolytes and more
  1. Materials Research Department, Toyota Research Institute of North America, Ann Arbor MI 48105, USA
  2. Advanced Institute for Materials Research (AIMR), Tohoku University, Sendai, Japan

Beyond Li-ion batteries have the potential to forge a path forward toward enabling large scale implementation of electrochemical energy storage systems. In particular technologies like solid state battery technologies and those incorporating metallic anodes have lured an ever expanding R&D global efforts motivated by promises of increased energy density and enhanced overall performances. However, enabling systems that are optimal remain a challenge. One important key to achieving the desired performances lies in the electrolytes. Herein, I will address issues facing beyond Li-ion batteries and explain the advancements made in our laboratories.

Steven Visco

CEO
PolyPlus

Speaker Bio

Steven Visco is the Chief Executive Officer, CTO, and founder of PolyPlus Battery Company in Berkeley, California, as well as a Guest Scientist in the Materials Science Division at the Lawrence Berkeley National Laboratory. Steven J. Visco currently holds 150 U.S. patents, more than 200 international patents and has authored over 80 journal articles, as well as books, monographs and other publications. Dr. Visco graduated with a B.S. in Chemistry from the University of Massachusetts in 1977 and received his Ph.D. in Physical Chemistry from Brown University in 1982.  Dr. Visco then joined the staff at the Lawrence Berkeley National Laboratory as a Principal Investigator in the Materials Sciences Division in 1984 where his research interests have included advanced batteries and fuel cells.  Steven Visco co-founded PolyPlus Battery Company in 1991.  In 2013 Dr. Visco was selected by the City of Berkeley for a “Visionary Award” for his work in next generation batteries. Steve also serves on the Technical Advisory the CIC Energigune Institute in Miñano, Spain and was awarded the 2011 International Battery Association Award for “Outstanding Contributions to the Development of Lithium-Air and Lithium-Water Batteries.”  PolyPlus Battery Company was selected by TIME magazine for its 50 Best Inventions of 2011 Issue, and was selected for a Gold Edison Award in 2012. In May 2015 Dr. Visco was elected a Fellow of the Electrochemical Society.

Lecture: Challenges and Opportunities: Next Generation Battery Technologies Enabled by Solid Electrolytes

PolyPlus Battery Company was originally founded to commercialize Li/S batteries and developed the ether-based electrolytes used in most, if not all, advanced Li/S chemistries. The presence of dissolved polysulfides which react with the negative electrode leads to parasitic cell reactions (polysulfide shuttle) and poor cycling, motived the company to develop “protected lithium electrodes.” Since that time the company has pioneered the use of solid electrolytes to chemically isolate the Li electrode while promoting reversible cycling. PolyPlus uses both polycrystalline and amorphous glasses to build protected electrodes for different applications. The ceramic electrolyte Li1+xAlxTi2–x(PO4)3 (LATP) has an ionic conductivity of greater than 3 x 10-4 S/cm and is remarkably stable to aqueous electrolytes; allowing PolyPlus to build primary Li/Air batteries that have achieved close to 1,000 Wh/kg in external testing, and Li/Water batteries which will soon be commercialized at energy densities of ~ 1500 Wh/kg and 1000 Wh/l (this is the highest specific energy ever demonstrated). PolyPlus is also working with sulfide glasses for rechargeable applications. We work with sulfide glasses having ionic conductivities of 10-3 S/cm, and with a sufficiently large window between the glass transition temperature and the crystallization temperature to process the glass into thin sheets. Since sulfide solid electrolytes are moisture sensitive, draw-down is done inside a draw tower that is enclosed in a vertical glovebox. We are presently developing 3D interconnected cathodes having no carbon additives and sufficient porosity to infiltrate sulfide solid electrolyte to be used in fully solid-state rechargeable Li metal batteries. The challenges and successes of these approaches will be addressed in the presentation.

Toby Bond

Senior Scientist- Canadian Light Source
USA

Speaker Bio

Toby Bond is a Senior Scientist in the Industrial Science group at the Canadian Light Source (CLS), Canada’s national synchrotron facility. He is a specialist in x-ray imaging of energy storage devices, specializing in in-situ and operando analysis of batteries and fuel cells for industrial clients of the CLS. Toby is an electrochemist by training, having completed his B.Sc. in Chemistry at the University of Saskatchewan in 2010, followed by a M.Sc. in Chemistry at Dalhousie University in 2012, where he developed prototype high-precision coulometry instruments with Dr. Jeff Dahn. Toby has been with the CLS since 2014, and is currently finishing a Ph.D. in the Dahn lab while continuing to work at the CLS.

Lecture: Long-term effects of cathode microcracking in commercial Li-ion cells: an operando x-ray diffraction and imaging study

As adoption of EVs and e-mobility devices becomes more widespread, the development of cathodes with higher energy density has become a major focus of cell manufacturers and OEMs. Ni-rich NMC cathodes in particular have been widely used for these applications. However, these materials are known to experience significant mechanical stress during cycling as a result of large anisotropic volume expansion and contraction. After repeated cycling, these stresses can lead to microcracking of secondary particles, which has been well-characterized in the literature using post-mortem techniques such as electron microscopy. While powerful and informative, this kind of post-mortem analysis requires destructive sampling of the electrode and provides only a limited understanding of how microcracking affects the operation and multi-scale structure of the cell.

 

Using synchrotron-based operando X-ray diffraction and microscopy techniques, we have characterized significant microstructural and kinetic changes in NMC622/graphite pouch cells that have been cycled for over two years. These include dramatic changes in porosity, particle morphology, electrode thickness, electrolyte distribution, and spatial distribution of lithiation state during cycling. Using non-destructive, time-resolved measurements of unmodified cells, the progression of microcracking can be tracked over months of cycling, allowing us to explore its effects at the particle, electrode, and cell level. The ability to characterize and accurately model this type of degradation has increasingly important for high-cycle-count applications like vehicle-to-grid energy storage and second-life batteries.

Vibha Kalra

Cornell University
USA

William Cheuh

Associate Professor
Stanford University
USA

Yang Shao-Horn

Professor
MIT Department of Material Science and Engineering
USA

Yi Cui

Professor of Materials Science and Engineering
Stanford University
USA

Speaker Bio

At Stanford University, Yi Cui is Founding Director of Sustainability Accelerator, Fortinet Founders Professor of materials science and engineering, energy science and engineering, and of photon science at SLAC National Accelerator Laboratory. He earned his bachelor’s degree in chemistry in 1998 from the University of Science & Technology of China and his PhD in chemistry from Harvard University in 2002. Cui was a Miller Postdoctoral Fellow at the University of California, Berkeley from 2002 to 2005 before joining the Stanford faculty.

He works in the area of nanotechnology and clean energy technology. He is best-known for his works on reinventing batteries through nanotechnology. His introduction of silicon nanowires for lithium ion battery anodes in 2008 has launched a burst of nanostructure designs for batteries. He introduced additional silicon nanostructures, nanostructured sulfur cathodes, and Li metal anodes for high energy density batteries. He also invented new type of aqueous metal-hydrogen gas battery for grid scale energy storage with excellent power, safety, efficiency and durability. He pioneered the development of cryogenic electron microscopy technique for battery research and answer important long-standing questions in the field. His prolific and wide-ranging contributions (>560papers, >280,000 citations, H-index 265) solve important societal challenges while simultaneously seeking a deep scientific understanding of the underlying physical mechanisms.

He served as the Director of Stanford’s Precourt Institute for Energy (2021-023) and an Associate Editor of Nano Letters (2011-2023) and Co-director of the Battery 500 Consortium, Bay Area Photovoltaic Consortium, Stanford StorageX Initiative and Stanford’s Ecopreneurship program.

He is an elected member of the US National Academy of Sciences, fellow of the American Association for the Advancement of Science, fellow of the Materials Research Society, fellow of the Electrochemical Society, and fellow of the Royal Society of Chemistry. His selected honors include Global Energy Prize (2021), Ernest Orlando Lawrence Award (2021), Materials Research Society Medal (2020), Electrochemical Society Battery Technology Award (2019) and Blavatnik National Laureate (2017). He founded five companies to commercialize technologies from his lab and created economic values to United States: Amprius (NYSE: AMPX), 4C Air, EEnotech, LifeLabs Design, EnerVenue.

Lecture: Materials and Electrolyte Design for Lithium Metal Anodes

This talk presents a decade long research on the following topics related to Li metal anodes: 1) Designing host and interface materials to contain the volume fluctuation during plating and stripping; 2) Newly designed fluorinated electrolytes, suspension electrolytes and high entropy electrolytes for improving cycling coulombic efficiency; 3) Studying corrosion and capacity fading mechanisms leading to designing strategies for the recovery of isolated Li metal.