Solid-state electrolyte and method for preparing the same
By optimizing the preparation method of Li2O and controlling the discharge intensity and gas pressure, Li2O with lattice defects was generated and combined with polyrotaxane, which solved the problems of high grain boundary resistance and low ionic conductivity of inorganic particle composite solid electrolytes, and realized a solid electrolyte with high ionic conductivity and excellent electrochemical performance.
CN122118057APending Publication Date: 2026-05-29SICHUAN UNION SHINE NEW ENERGY SCI TECH CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SICHUAN UNION SHINE NEW ENERGY SCI TECH CO LTD
- Filing Date
- 2026-01-19
- Publication Date
- 2026-05-29
AI Technical Summary
Technical Problem
Existing inorganic particle composite solid electrolytes suffer from poor interfacial compatibility between organic polymers and inorganic materials, resulting in high grain boundary resistance and low ionic conductivity, which affects their electrochemical performance.
Method used
By optimizing the preparation method of Li2O and controlling the discharge intensity and gas pressure in the reaction chamber, Li2O with lattice defects is generated and then combined with polyrotaxane to form a solid electrolyte with high ionic conductivity.
Benefits of technology
It significantly improves the ionic conductivity and electrochemical performance of solid electrolytes, broadening their application areas.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122118057A_ABST
Abstract
This invention relates to the field of solid electrolyte preparation technology, specifically to a solid electrolyte and its preparation method. The preparation method involves mixing raw materials to form a solid electrolyte, wherein the raw materials include Li₂O and polyrotaxane; wherein the preparation of Li₂O includes: placing an oxygen-containing lithium source at the positive electrode of an electric field in a reaction chamber, and evacuating the reaction chamber; introducing process gas into the reaction chamber, gradually increasing the discharge intensity of the electric field from 1-3 kW to 8-10 kW; maintaining the discharge intensity at 8-10 kW and stopping the introduction of process gas into the reaction chamber; reducing the discharge intensity to 3-5 kW and maintaining it, and introducing process gas into the reaction chamber to obtain Li₂O; the pressure in the reaction chamber is controlled at 10 kcal / kg during the preparation process. ‑1 ~10 3 Pa. This solves the problems of high grain boundary resistance and low ionic conductivity in existing composite solid electrolytes.
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