Recent advances and perspectives on thin electrolytes for high-energy-density solid-state lithium batteries

Solid-state lithium batteries (SSLBs) are promising next-generation energy storage devices due to their potential for high energy density and improved safety. The properties and physical parameters of the solid-state electrolyte (SSE), as a critical component of the battery, have a significant effec...

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Published inEnergy & environmental science Vol. 14; no. 2; pp. 643 - 671
Main Authors Yang, Xiaofei, Adair, Keegan R, Gao, Xuejie, Sun, Xueliang
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 01.01.2021
Subjects
Batteries
Commercialization
Critical components
Design parameters
Electrochemical analysis
Electrochemistry
Electrolytes
Electrolytic cells
Energy
Energy storage
Fabrication
Flux density
Gravimetry
Lithium
Lithium batteries
Manufacturing industry
Molten salt electrolytes
Physical properties
Production costs
Solid electrolytes
Solid state
Storage batteries
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Summary:Solid-state lithium batteries (SSLBs) are promising next-generation energy storage devices due to their potential for high energy density and improved safety. The properties and physical parameters of the solid-state electrolyte (SSE), as a critical component of the battery, have a significant effect on the electrochemical performance and energy density. In recent years, thick SSEs have been widely used in SSLBs but present several drawbacks in terms of increased internal resistance, additional inactive material content, low practical energy densities, and higher battery manufacturing costs. Reducing the thickness of SSEs and developing high-performance thin SSE-based SSLBs are essential for the commercialization of SSLBs. In this review, we comprehensively summarize the fabrication methods of thin SSEs, their rational design, and their manufacturing processes and applications in different SSLB systems. Moreover, advanced characterization techniques for understanding the Li + transport kinetics and structural evolution of SSEs at the interface are introduced. Additionally, the gravimetric/volumetric energy densities for various SSLB pouch cells with SSEs less than 100 μm thick are evaluated. Lastly, other cell design parameters are tuned to achieve gravimetric/volumetric energy densities over 300 W h kg −1 /500 W h L −1 , and the future directions of thin SSEs in SSLBs are speculated upon. This review summarizes the recent progress of thin solid-state electrolytes for high energy-density solid-state lithium batteries.
Bibliography:Prof. Xueliang (Andy) Sun is a Canada Research Chair in the Development of Nanomaterials for Clean Energy, Fellow of the Royal Society of Canada and the Canadian Academy of Engineering and Full Professor at the University of Western Ontario, Canada. Dr Sun received his PhD in materials chemistry in 1999 from the University of Manchester, UK, which he followed up by working as a postdoctoral fellow at the University of British Columbia, Canada, and as a Research Associate at L'Institut National de la Recherche Scientifique (INRS), Canada. His current research interests are focused on advanced materials for electrochemical energy storage and conversion.
Dr Xiaofei Yang is currently a postdoctoral associate in Prof. Xueliang (Andy) Sun's Nanomaterials and Energy Group. He received his BE degree in Chemical Engineering from Anhui University, China, in 2013 and his PhD degree from the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, China, in 2018 under the supervision of Prof. Huamin Zhang. His research interests focus on Li-S batteries, all-solid-state Li-ion and Li-S batteries and battery interface studies via synchrotron X-ray characterization.
Xuejie Gao is currently a PhD candidate in Prof. Xueliang (Andy) Sun's group at the University of Western Ontario, Canada. She received her BS degree in Chemistry in 2014 from Ludong University and obtained her MS degree in Chemistry in 2017 from Soochow University. Currently, her research interests focus on the development of 3D printing applied for lithium batteries. She is also co-supervised by Prof. T. K. Sham from Chemistry Department in the University of Western Ontario. Part of her work is related to the study of energy materials via synchrotron radiation.
10.1039/d0ee02714f
Electronic supplementary information (ESI) available. See DOI
Keegan R. Adair received his BSc in chemistry from the University of British Columbia in 2016. He is currently a PhD candidate in Prof. Xueliang (Andy) Sun's Nanomaterials and Energy Group at the University of Western Ontario, Canada. He has previous experience in the battery industry through internships at companies including E-One Moli Energy and General Motors R&D. His research interests include the design of nanomaterials for lithium metal batteries and nanoscale interfacial coatings for battery applications.
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ISSN:1754-5692
1754-5706
DOI:10.1039/d0ee02714f