Abstract
Currently, the assembly of all-solid-state batteries (ASSBs) mostly involves powder pressing method, which is primarily suitable for laboratory research and presents challenges for industrial-scale manufacturing of ASSBs. Wet processes are the most mature scale-up film formation technology in the lithium-ion battery industry. Therefore, the development of wet processes for forming solid-state electrolytes (SSEs) films is of great interest for the industrial production of ASSBs. Understanding the solvent stability of SSEs is a prerequisite for realizing the industrial production of ASSBs using wet processes. Halide SSEs have attracted extensively attention due to their mechanical flexibility, superionic conductivity, and wide electrochemical window. However, to date, the stability of halide SSEs and solvents has not been systematically investigated. Herein, we systematically investigate the changes in the solubility, structure, and ionic conductivity of halide SSEs upon exposure to different solvents, providing a crucial technical foundation for the wet processing of ASSBs.
Published Version
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