| abstract |
The invention provides a low-cost method for preparing a sulfide solid-state electrolyte composed of Li, P and S elements and whose components can be freely controlled, comprising the following steps: adding a simple substance to an organic ether solution of metallic lithium-aromatic compounds Sulfur and phosphorus pentasulfide are mixed to obtain a mixed solution; the mixed solution is sequentially subjected to mixing reaction, separation and precipitation, drying and heat treatment to obtain a sulfide solid electrolyte containing Li, P and S as constituent elements. The preparation method of the sulfide solid electrolyte has cheap and easily available raw materials, simple process, safe production, easy adjustment of product components, and can greatly reduce the production cost. |