Sulfide Glass-Ceramic Electrolytes For All-Solid-State Lithium And Sodium Batteries

Sulfide glass-ceramic electrolytes with Li+ or Na+ ion conduction have been developed in the last decade. High-temperature phases of Li7P3S11 and cubic Na3PS4 are precipitated from mother glasses, and the obtained glass ceramics show higher conductivity than the mother glasses. It is difficult to synthesize those high-temperature phases by conventional solid-state reaction, and glass electrolytes are thus important as a precurser for forming high temperature phases.