一种具有空气稳定性的硫化物固态电解质及其制备方法和应用
By doping LPSC-type sulfide solid electrolytes with Co and F, the problems of air instability and interfacial instability of sulfide solid electrolytes are solved, resulting in higher air stability and conductivity, and improved battery performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANGHAI FIRM LITHIUM NEW ENERGY TECH CO LTD
- Filing Date
- 2026-04-22
- Publication Date
- 2026-07-17
AI Technical Summary
Existing sulfide solid electrolytes are unstable in air, causing the materials to deteriorate rapidly when exposed to air, increasing environmental control costs and battery manufacturing difficulties. Furthermore, the unstable interface with the lithium metal anode limits the improvement of battery performance.
Co and F are used to double-dop the LPSC-type sulfide solid electrolyte. Co doping enhances the PS bond strength, while F doping forms a stable lithium fluoride/fluoride passivation layer, which inhibits the reaction of the material with moisture in the air and improves the air stability of the material.
It significantly improves the air stability and conductivity of sulfide solid electrolytes, enhances interfacial stability with lithium metal anodes, broadens the electrochemical window, and reduces the complexity and cost of battery manufacturing.
Smart Images
Figure CN122418014A_ABST