Ion-electron conductor, method for producing the same, and use thereof

By uniformly distributing functional group-doped carbon nanotubes on the surface and in the gaps between sulfide solid electrolyte particles to form a composite structure, the processing performance and water vapor stability of sulfide solid electrolytes in all-solid-state batteries are solved, the electronic conductivity and air stability are improved, and the processing performance and interface stability of all-solid-state batteries are enhanced.

CN122224934APending Publication Date: 2026-06-16CHONGQING SAICIYAN LITHIUM NEW MATERIAL TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHONGQING SAICIYAN LITHIUM NEW MATERIAL TECHNOLOGY CO LTD
Filing Date
2026-02-28
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

The processing performance and water vapor stability of sulfide solid electrolytes in all-solid-state batteries need to be improved, and the preparation conditions are harsh, increasing production costs.

Method used

A composite structure of carbon nanotubes and sulfide solid electrolyte particles is adopted. The carbon nanotubes, which are treated with functional groups, are uniformly distributed on the surface and in the gaps of the sulfide solid electrolyte particles to form a composite structure, which enhances electronic conductivity and improves air stability.

Benefits of technology

It improves the electronic conductivity and electrochemical stability of sulfide solid electrolytes, reduces reactivity with air, improves the processing performance and interface stability of all-solid-state batteries, and reduces production costs.

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Abstract

This invention discloses an ion-electron conductor, its preparation method, and its application. It addresses the technical problem of improving the electrical performance, processing performance, and moisture stability of sulfide solid electrolytes when applied to all-solid-state batteries. The ion-electron conductor of this invention comprises sulfide solid electrolyte particles and carbon nanotubes. The carbon nanotubes are distributed on the surface and in the gaps between the sulfide solid electrolyte particles, forming a composite structure. Furthermore, the carbon nanotubes are treated to be doped with functional groups, including one or more of FSI-, TSFI-, NFSI-, FAP-, BOB-, and LiBF4-. The ion-electron conductor of this invention exhibits advantages such as improved electrical performance, processing performance, and moisture stability when applied to all-solid-state batteries.
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