期刊
ACS ENERGY LETTERS
卷 8, 期 9, 页码 3676-3684出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsenergylett.3c01157
关键词
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A thin cross-linked poly(butylene oxide) solid polymer electrolyte (xPBO SPE) interlayer is demonstrated on the superionic Li3InCl6 solid-state electrolyte to enable lithium metal compatibility. This solves the incompatibility issue between halide solid-state electrolytes and lithium metal anodes.
Halide-based solid-state halide electrolytes (SSEs) wererecentlyrevived as promising candidates for next-generation all-solid-statebatteries due to their superionic conductivity, direct compatibilitywith high-voltage cathodes, and scalable production. However, theincompatibility between halide SSEs and lithium metal anodes remainsa main challenge to achieve high energy density. Herein, we demonstratea thin cross-linked poly(butylene oxide) solid polymer electrolyte(xPBO SPE) interlayer on the superionic Li3InCl6 SSE to enable lithium metal compatibility. A rapid and solvent-freein situ cross-linking process is developed by reaction between a 0.5s pulse of trimethylaluminum vapor and the hydroxyl terminal groupsof poly(butylene oxide). The Li-Li symmetric cells using xPBO-SPE@Li3InCl6 demonstrate a highly stable cycling performanceover 1100 h and up to 1.0 mA cm(-2) and 1.0 mAh cm(-2). All-solid-state lithium metal battery (ASSLMB) performancewith a LiCoO2 cathode is presented. This new rapid cross-linkingstrategy shall inspire more possibilities for lithium metal anodeintegration in ASSLMBs.
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