SOLID ELECTROLYTE PRODUCTION PROCESS USING ALKALI METAL COMPOSITE

Processes for producing sulfide-based solid electrolytes include preparing a slurry by mixing a solvent with an alkali metal sulfide having a surface area greater than 6 m/g or an alkaline earth metal sulfide having a surface area greater than 6 m/g and a secondary sulfide. The slurry is then dried to produce the sulfide-based solid electrolyte.