Silver-carbon composite material, preparation method thereof, lithium-silver carbon composite electrode material and energy storage device

By embedding silver nanoparticles in a framework structure formed by amorphous carbonaceous materials in an all-solid-state battery, the problem of electrode structure damage caused by silver nanoparticle migration was solved, thus achieving electrode structure stability, extending battery life, and improving electrochemical reaction efficiency.

CN115602841BActive Publication Date: 2026-07-17CHINA ENERGY CAS TECH CO LTD
View PDF 4 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA ENERGY CAS TECH CO LTD
Filing Date
2021-07-09
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In all-solid-state batteries, the migration of silver nanoparticles to the stainless steel current collector leads to the destruction of the electrode structure and the degradation of battery performance.

Method used

A framework structure formed by amorphous carbon materials is used to embed silver nanoparticles, forming a three-dimensional framework structure. This alleviates the volume expansion and structural collapse of the lithium-silver composite anode. The amorphous carbon materials buffer the expansion of the silver nanoparticles, reduce the nucleation energy of lithium metal deposition, and promote uniform lithium metal deposition.

Benefits of technology

This achieved stability of the electrode structure, extended the cycle life of the battery, reduced the nucleation energy of lithium metal, promoted uniform deposition of lithium metal, and improved the electrochemical reaction efficiency of the battery.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN115602841B_ABST
    Figure CN115602841B_ABST
Patent Text Reader

Abstract

The application provides a silver-carbon composite material and a preparation method thereof, a lithium-silver-carbon composite electrode material and an energy storage device. The silver-carbon composite material comprises an amorphous carbon skeleton and silver nanoparticles embedded in the amorphous carbon skeleton structure. Since the silver nanoparticles are embedded in the amorphous carbon skeleton material, the amorphous carbon skeleton material buffers the expansion of the silver nanoparticles, effectively ensuring the structural stability of the silver-carbon composite material. In addition, the presence of the silver nanoparticles in the silver-carbon composite material can reduce the nucleation energy of metal lithium deposition and promote uniform deposition of the metal lithium. The lithium-silver-carbon composite negative electrode prepared from the silver-carbon composite material has a three-dimensional skeleton structure, which can provide a reserved space for metal lithium deposition to relieve the volume expansion and structural collapse of the lithium-silver-carbon composite negative electrode, thereby realizing the structural stability of the electrode and being beneficial to the preparation of a long-life cycle electrode.
Need to check novelty before this filing date? Find Prior Art