Preparation of Li3PS4–Li3PO4 Solid Electrolytes by Liquid-Phase Shaking for All-Solid-State Batteries

A solid solution of a 100Li3PS4·xLi3PO4 electrolyte was easily prepared by liquid-phase synthesis. Instead the conventional solid-state synthesis methods, ethyl propionate used as reaction medium. The initial stage among Li2S, P2S5 and Li3PO4 proved ultraviolet-visible spectroscopy. powder X-ray diffraction (XRD) results showed that formed up to x = 6. At 20, XRD peaks were detected in sample after heat treatment at 170 °C. However, samples obtained room temperature no evidence remaining for 20. Solid phosphorus-31 magic angle spinning nuclear magnetic resonance spectroscopy formation POS33− unit with Improvements ionic conductivity activation energy solution. 6 exhibited better stability against Li metal than 0. all-solid-state half-cell employing positive electrode charge–discharge capacity