Biomass-derived silicon-carbon negative electrode material and preparation method and application thereof

Biomass-derived carbon prepared from rice and diatoms is combined with diatom-derived bio-silica to form a porous nanostructured silicon-carbon anode material, which solves the stability and capacity decay problems of lithium-ion batteries and achieves high energy density and low cost battery performance.

CN119430129BActive Publication Date: 2025-11-25FOSHAN XIANHU LAB
View PDF 2 Cites 0 Cited by

Patent Information

Application Number
CN202411526641.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-10-30
Publication Date
2025-11-25
Estimated Expiration
2044-10-30

Smart Images

  • Figure CN119430129B_ABST
    Figure CN119430129B_ABST
Patent Text Reader

Abstract

The application belongs to the technical field of batteries, and specifically discloses a biomass-derived silicon-carbon negative electrode material and a preparation method and application thereof. The preparation method comprises the following steps: mixing and ball-milling biomass-derived carbon obtained through acid washing, alkali extraction, reprecipitation, drying, carbonization and ball milling, and diatom biological silicon dioxide obtained through precipitation collection, oxidative acidolysis, filtration and washing, drying and calcination, and finally obtaining a synergistically compounded silicon-carbon material. The silicon-carbon negative electrode material has the characteristics of high porosity and large specific surface area, can effectively reduce the volume expansion of the negative electrode material in the charging and discharging process of the battery, maintains the stability of the electrode structure, is applied to a lithium ion battery, and is beneficial to improving the charging and discharging capacity and cycle stability of the battery.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Diatomite-derived silicon-carbon negative electrode material, preparation method thereof and application of diatomite-derived silicon-carbon negative electrode material in lithium ion battery

    CN118373423A

  • Hard carbon negative electrode material and preparation method therefor, mixed negative electrode material, and secondary battery

    WO2024108771A1