Discharge Performance of All-Solid-State Battery Using a Lithium Superionic Conductor Li₁₀GeP₂S₁₂

Abstract

A solid electrolyte, Li₁₀GeP₂S₁₂, exhibits a high lithium ionic conductivity of 12 mS/cm at room temperature. Because of its high ionic conductivity, high charge-discharge performance would be expected for the all-solid-state batteries using the Li₁₀GeP₂S₁₂ electrolytes. In this study, all-solid-state batteries using Li₁₀GeP₂S₁₂, were constructed and their battery performances were examined. The batteries using the Li₁₀GeP₂S₁₂ electrolyte showed higher discharge capacities than those with glass electrolyte, 75Li₂S·25P₂S₅, particularly under the high-rate current discharge.