Multifunctional network solid electrolyte and preparation method and application thereof

By using a modified solid electrolyte with transition metal doping and silane coupling agent in lithium-ion batteries to form a three-dimensional interpenetrating network with functionalized carbon materials, the problems of long transport paths and interfacial side reactions in lithium-ion battery cathode materials are solved, thereby improving battery performance and energy density.

CN121601762APending Publication Date: 2026-03-03DALIAN INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202511947993.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-23
Publication Date
2026-03-03

AI Technical Summary

Technical Problem

Existing lithium-ion battery cathode materials have long electron and ion transport paths and high impedance, resulting in low utilization of active materials and poor rate performance. Furthermore, severe interfacial side reactions between highly active cathode materials and electrolytes affect battery capacity decay and safety.

Method used

Modified solid electrolytes prepared by transition metal doping combined with silane coupling agent modification form a three-dimensional interpenetrating network structure with functionalized carbon materials, realizing the synergistic transport of ions and electrons, constructing a continuous transport network, and forming a stable interfacial contact with the cathode material.

Benefits of technology

It improves the rate performance and cycle stability of the battery, increases the energy density of the battery, optimizes charge transport dynamics, and improves the charge transport effect inside the electrodes.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN121601762A_ABST
    Figure CN121601762A_ABST
Patent Text Reader

Abstract

The invention discloses a multifunctional network solid electrolyte as well as a preparation method and application thereof. The multifunctional network solid electrolyte is prepared from a modified solid electrolyte material and a functionalized carbon material, and the modified solid electrolyte material and the functionalized carbon material form a three-dimensional interpenetrating network structure with continuous ion and electron channels through chemical bonding. When the multifunctional network solid electrolyte is used as a positive electrode additive to be applied to an electrochemical energy storage device, ions and electrons are conducted, so that collaborative transportation of lithium ions and electrons in a positive electrode material is promoted, and the interface impedance is effectively reduced, thereby improving the rate capability and cycling stability of a battery; in addition, due to the transition metal element doped in the modified solid electrolyte, the solid electrolyte can play a structural function and increase the capacity at the same time, and the energy density of the battery is improved. The composite solid electrolyte can be applied to various electrochemical energy storage devices such as lithium ion batteries, lithium sulfur batteries and solid metal batteries, and finally the comprehensive performance of the batteries is improved.
Need to check novelty before this filing date? Find Prior Art