SULFIDE SOLID ELECTROLYTE

摘要

Disclosed are: a sulfide solid electrolyte having excellent ionic conductivity; and a process for producing a crystallized glass that is contained in the sulfide solid electrolyte. Specifically disclosed is a sulfide solid electrolyte, which is characterized by containing a crystallized glass represented by chemical formula (1). yLi2S?(100-x-y)P2S5?xP2O5 (1) (In formula (1), 0 < x < 25, and 67 < y < 80.)