METHOD FOR PRODUCING SULFIDE SOLID ELECTROLYTE

摘要

The main purpose of the present invention is to provide a method for producing a sulfide solid electrolyte, which is capable of improving the productivity of a sulfide solid electrolyte that has a small average particle diameter. The present invention is a method for producing a sulfide solid electrolyte, which comprises: a mixing step wherein a sulfide solid electrolyte and/or a starting material thereof is mixed with a solvent, thereby obtaining a mixture; and a grinding step wherein the sulfide solid electrolyte is mechanically ground using a first grinding medium that has a diameter of less than 1 mm and a second grinding medium that has a diameter of 1 mm or more at the same time.