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| Research progress on key issues and improvement strategies affecting the application of inorganic solid electrolytes |
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Received:April 11, 2023
Revised:April 24, 2023
Accepted:April 27, 2023
Published Online:August 22, 2023
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| DOI： |
| KeyWord:Solid-state lithium battery; solid electrolyte; interfacial stability; humidity stability; solid-solid contact stability |
| Author | Institution |
| Yu Tianwei |
Beijing Easpring Material Technology Co.,Ltd. |
| Shao Zongpu |
Beijing Easpring Material Technology Co.,Ltd. |
| Liu Yafei |
Beijing Easpring Material Technology Co.,Ltd. |
| Chen Yanbin |
Beijing Easpring Material Technology Co.,Ltd. |
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| Abstract: |
| In order to achieve the goals of high energy density and good safety in the field of energy storage technology, all-solid-state lithium batteries (ASSLBs) have become the focus of extensive research. As the main component of all-solid-state lithium batteries, inorganic solid electrolytes play a crucial role in all-solid-state lithium batteries. In the past few years, significant progress has been made in the research of inorganic solid electrolytes. After decades of research efforts, various lithium solid electrolytes with high ionic conductivity have been reported. The instability of sulphide solid electrolytes at high potentials limits their use in high voltage cathode materials above 4.0 V (vs. Li+/Li); the inherent rigidity of oxide solid electrolytes in solid-solid contact limits their machinability; halide solid electrolytes, along with sulphides This paper focuses on the problems associated with the cycling process of the battery. This paper summarizes and discusses the problems of redox side reactions at the interface between solid electrolyte and electrode, the inherent hygroscopicity of the material (poor air humidity stability), and the key influencing factors and improvement strategies for the physical contact failure at the interface between solid electrolyte and electrode during the battery cycle. The future research directions are also proposed. |
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