A5011501315- Advanced Battery Materials and Technologies
- Advancements in Battery Materials
- Advanced Battery Technologies Research
- Advanced battery technologies research
- Thermal Expansion and Ionic Conductivity
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Extraction and Separation Processes
- Supercapacitor Materials and Fabrication
- Inorganic Chemistry and Materials
- Electrocatalysts for Energy Conversion
- Nuclear materials and radiation effects
- Crystal Structures and Properties
- Advancements in Solid Oxide Fuel Cells
- Electronic and Structural Properties of Oxides
- Zeolite Catalysis and Synthesis
- Advanced NMR Techniques and Applications
- Fuel Cells and Related Materials
- Electron and X-Ray Spectroscopy Techniques
- Machine Learning in Materials Science
- Ionic liquids properties and applications
- Integrated Circuits and Semiconductor Failure Analysis
- Advanced Condensed Matter Physics
- Analytical Chemistry and Sensors
- Thermal and Kinetic Analysis
University of California, San Diego
2019-2024
Saft (France)
2024
Shell (Netherlands)
2020
Centre National de la Recherche Scientifique
1998-2018
Nantes Université
2017-2018
Institut des Matériaux Jean Rouxel
2017-2018
Paul Pascal Research Center
1998
Silicon anode solid-state batteries Research on has focused lithium metal anodes. Alloy-based anodes have received less attention in part due to their lower specific capacity even though they should be safer. Tan et al . developed a slurry-based approach create films from micrometer-scale silicon particles that can used with carbon binders. When incorporated into batteries, showed good performance across range of temperatures and excellent cycle life full cells. —MSL
Sulfide-based solid electrolytes are promising candidates for all solid-state batteries (ASSBs) due to their high ionic conductivity and ease of processability. However, narrow electrochemical stability window causes undesirable electrolyte decomposition. Existing literature on Li-ion ASSBs report an irreversible nature such decompositions, while Li–S show evidence some reversibility. Here, we explain these observations by investigating the redox mechanism argyrodite Li6PS5Cl at various...
All-solid-state batteries exhibit good performance even at low operating stack pressure when soft electrode materials are used.
Rechargeable solid-state sodium-ion batteries (SSSBs) hold great promise for safer and more energy-dense energy storage. However, the poor electrochemical stability between current sulfide-based solid electrolytes high-voltage oxide cathodes has limited their long-term cycling performance practicality. Here, we report discovery of ion conductor Na3-xY1-xZrxCl6 (NYZC) that is both electrochemically stable (up to 3.8 V vs. Na/Na+) chemically compatible with cathodes. Its high ionic...
To obtain high-energy density Li-ion batteries for the next-generation storage devices, silicon anodes provide a viable option because of their high theoretical capacity, low operating potential versus lithium (Li), and environmental abundance. However, electrode suffers from large volume expansion (∼300%) that leads to mechanical failure, cracks in SEI (solid electrolyte interphase), loss contact with current collector, all which severely impede capacity retention. In this respect, choice...
Enabling long cyclability of high-voltage oxide cathodes is a persistent challenge for all-solid-state batteries, largely because their poor interfacial stabilities against sulfide solid electrolytes. While protective coating layers such as LiNbO3 (LNO) have been proposed, its precise working mechanisms are still not fully understood. Existing literature attributes reductions in impedance growth to the coating's ability prevent reactions. However, true nature more complex, with cathode...
When exposed to moisture, Li 6 PS 5 Cl undergoes both hydrolysis and hydration reactions. It can be partially recovered by heat treatment, but causes the formation of LiCl, 2 S, 3 PO 4 , oxysulfides due irreversible sulfur loss.
Abstract All‐solid‐state batteries are expected to enable with high energy density the use of lithium metal anodes. Although solid electrolytes believed be mechanically strong enough prevent dendrites from propagating, various reports today still show cell failure due dendrit growth at room temperature. While parameters such as current density, electrolyte porosity, and interfacial properties have been investigated, mechanical role applied stack pressure on shorting behavior poorly...
All solid-state batteries (ASSBs) have the potential to deliver higher energy densities, wider operating temperature range, and improved safety compared with today's liquid-electrolyte-based batteries. However, of various electrolyte (SSE) classes—polymers, sulfides, or oxides—none alone can combined properties ionic conductivity, mechanical, chemical stability needed address scalability commercialization challenges. While promising strategies overcome these include use polymer/oxide sulfide...
Solid-state electrolytes (SSEs) are promising candidates to circumvent flammability concerns of liquid electrolytes. However, enhancing energy densities by thinning SSE layers and enabling scalable coating processes remain challenging. While previous studies have addressed thin flexible SSEs, mainly ionic conductivity was considered for performance evaluation, no systematic research on the effects manufacturing conditions quality films performed. Here, both uniformity evaluating under...
One approach to increase the energy density of all-solid-state batteries (ASSBs) is use high-voltage cathode materials. The spinel LiNi0.5Mn1.5O4 (LNMO) one such example, as it offers a high reaction potential (close 5 V). Moreover, Co-free system, which makes an environmentally friendly and low-cost alternative. However, several challenges must be addressed before can properly adopted in ASSB technologies. Herein, we reveal that lithium argyrodite (Li6PS5Cl), sulfide solid-state electrolyte...
All-solid-state batteries have recently gained considerable attention due to their potential improvements in safety, energy density, and cycle-life compared conventional liquid electrolyte batteries. Sodium all-solid-state also offer the eliminate costly materials containing lithium, nickel, cobalt, making them ideal for emerging grid storage applications. However, significant work is required understand persisting limitations long-term cyclability of Na all-solid-state-based In this work,...
Sulfide-based solid electrolytes are known to have narrow electrochemical windows which limit their practical use in all-solid-state batteries (ASSBs). Specifically, when paired with a high-voltage transition metal oxide (TMO) cathode, the electrolyte will typically undergo unwanted degradation via chemical reactions or oxidation, especially upon charging voltages beyond stability window of electrolyte. To mitigate these undesired reactions, thin (<10 nm), conformal, ionically-conducting,...
Abstract To meet growing energy demands, degradation mechanisms of storage devices must be better understood. As a non‐destructive tool, X‐ray Computed Tomography (CT) has been increasingly used by the battery community to perform in situ experiments that can investigate dynamic phenomena. However, few have CT study representative systems over long cycle lifetimes (>100 cycles). Here, Zn–Ag batteries is reported and effects current collector parasitic gassing long‐term cycling are...
Abstract. Usually, conventional electron paramagnetic resonance (EPR) spectroscopy and imaging employ a microwave cavity operating at X-band, i.e., with an excitation frequency of around 9.6 GHz, this remains the most popular mode for magnetic characterization lithium batteries to date. Here, we provide first low-frequency EPR investigations respect monitoring metallic structures in solid-state pouch cell batteries. We show that L-band, 1.01 is invaluable method probe electrode components...
Synthesis parameters, storage conditions, and electrolyte chemistry are all critical parameters limiting the cycling performances of disordered rock salt cathodes.