Effects of Sintering Temperatures on the Crystallinity and Electrochemical Properties of the Li10GeP2S12 via Solid-State Sintering Method

In this study, Li10GeP2S12 (LGPS) powder material was prepared via solidstate sintering method under the environment where oxygen and water is isolated. The influences of different sintering temperatures on crystallinity and electric electrochemical properties of the prepared LGPS powder were investigated. The experiment results indicate that the LGPS powder prepared with different sintering temperatures show good crystallinity, and the crystallinity of the LGPS powder is improved at a higher sintering temperature. Moreover, the ionic conductivity of the prepared LGPS powder material increased firstly and then decreased with the increasing sintering temperature, and the highest ionic conductivity of the prepared LGPS powder obtained at 570 °C reached about 1.6 × 10−3 S/cm (room temperature).