SOLID-STATE ELECTROLYTE MATERIAL, PREPARATION METHOD, ELECTROLYTELAYER, AND LITHIUM ION BATTERY

Abstract

A solid-state electrolyte material has a chemical formula of LiaPbCmSdOnClf, where 5.4≤a≤6.1, 0.9≤b≤1, 0<m≤0.1, 4.1≤d≤5, 0<n≤0.3, and 1≤f≤1.7. By co-doping O and C elements into an argyrodite-type sulfide electrolyte, the solid-state electrolyte material obtained maintains the excellent properties of the original electrolyte material, such as high ionic conductivity, good mechanical strength, and excellent anode stability, while effectively improving the air stability and cathode stability of the electrolyte, thereby significantly enhancing its comprehensive performance and practical value.

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