FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing a sulphide-based solid electrolyte which contains Sn. Method of producing a sulphide solid electrolyte involves: a step for preparing a solution, at which a homogeneous solution containing at least elemental lithium (Li), elemental tin (Sn), elemental phosphorus (P) is obtained and elemental sulphur (S) in an organic solvent; a drying step at which the organic solvent is removed from the obtained homogeneous solution to obtain a precursor; and a thermal treatment step, at which the obtained precursor is heated to obtain a sulphide solid electrolyte.
EFFECT: providing a method of producing a sulphide-based solid electrolyte with low content of impurities, which provides stable operation, which has excellent performance.
12 cl, 3 dwg, 1 tbl, 6 ex
