| abstract |
The invention provides a sulfide solid electrolyte precursor solution of a solid-state lithium-sulfur battery, a preparation method thereof, a sulfide solid electrolyte and a composite positive electrode material prepared by using the precursor solution, and the sulfide solid electrolyte and the composite positive electrode A method for preparing a material, wherein the solid electrolyte precursor solution comprises Li 2 S and P 2 S 5 with an overall nominal molar ratio ranging from 70:30 to 80:20, as well as acetonitrile and at least one other non- A protic polar solvent, wherein the sulfide solid electrolyte precursor solution is a solution of Li 2 S and P 2 S 5 with acetonitrile as a solvent and a nominal molar ratio of 1:1 to 1:2, and the other non- Homogeneous mixed liquid phase of lithium polysulfide solution with protic polar solvent as solvent. |