METHOD FOR OBTAINING SOLID ELECTROLYTE BASED ON LGPS Russian patent published in 2021 - IPC H01M10/562 

FIELD: chemistry.

SUBSTANCE: invention relates to a method for obtaining solid electrolyte based on LGPS having a certain crystal structure containing Li, P and S. The method for obtaining solid electrolyte based on LGPS is characterized by the presence of a stage at which a mixture of Li₃PS₄ crystals having a peak on the Raman spectrum at 420±10 cm^-1 and Li₄MS₄ crystals (M is selected from a group consisting of Ge, Si and Sn) is subjected to heat treatment at 300-700°C; the presence of a stage at which Li₃PS₄ crystals having a peak on the Raman spectrum at 420±10 cm^-1, Li₂S crystals and sulfide crystals represented by the MS₂ structure (M is selected from the group consisting of Ge, Si and Sn) are mixed, while preserving crystals and synthesizing a precursor; and a stage at which the precursor is subjected to heat treatment at 300-700°C.

EFFECT: high productivity, stable characteristics and a reduction in the formation of side products.

8 cl, 5 dwg, 8 ex