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

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, 75Li(2)S center dot 25P(2)S(5), particularly under the high-rate current discharge. (C) The Electrochemical Society of Japan, All rights reserved.