一种无机有机复合固态电解质膜及其制备方法
By modifying PEO and using mixed solvents and additives to prepare inorganic-organic composite solid electrolyte membranes, the problem of uneven dispersion of PEO in polar solvents was solved, and the ionic conductivity and lithium-ion transport rate of sulfide solid electrolytes were improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GUIZHOU MATERIAL IND TECH INSTITUE
- Filing Date
- 2026-01-04
- Publication Date
- 2026-07-17
AI Technical Summary
In the wet preparation of sulfide solid electrolyte membranes, PEO is easily soluble in polar solvents, leading to structural decomposition and performance degradation. Furthermore, PEO is unevenly dispersed in anisole solvent, affecting the encapsulation and dispersion effect of the sulfide solid electrolyte.
Methyl-terminated polyethylene oxide was used to modify PEO, and Li3PO4 was added to a mixed solvent of anisole and tetrahydrofuran to promote the dispersion of PEO in the mixed solvent, forming a homogeneous slurry, and thus preparing an inorganic-organic composite solid electrolyte membrane.
It improves the ionic conductivity of sulfide solid electrolytes, inhibits PEO degradation, increases lithium-ion transport rate, and enhances the performance of composite solid electrolyte membranes.
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