FIELD: technological processes.
SUBSTANCE: method for the production of a sulfide solid electrolyte is proposed, that can improve the storage of a container in a fully solid-state battery. Method comprises a material amorphization for a sulfide solid electrolyte by mechanically grinding an electrolyte feed containing at least Li2S and one or more sulphid(s) selected from P2S3, P2S5, SiS2, GeS2, B2S3 and Al2S3. After the said amorphization, the material for the sulfide solid electrolyte is heated in a gas stream capable of forming a chemical bond with elemental sulfur at a temperature not less than the melting point of elemental sulfur and lower than 230 °C. A gas capable of forming a chemical bond with elemental sulfur is used, contains H2S or H2.
EFFECT: method ensures an increase in the storage capacity in a fully solid-state battery.
9 cl, 1 dwg, 1 tbl
