纳米硅基复合材料及其制备方法和应用

By designing nano-silicon-based composite materials, including reinforced porous scaffolds and silicon nanoparticles, the structural instability caused by volume expansion of silicon-based anode materials in lithium-ion batteries was solved, achieving high cycle stability and structural stability, and improving battery performance.

CN117673284BActive Publication Date: 2026-07-17LANXI ZHIDE ADVANCED MATERIALS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
LANXI ZHIDE ADVANCED MATERIALS CO LTD
Filing Date
2022-08-26
Publication Date
2026-07-17

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Abstract

本发明提供纳米硅基复合材料及其制备方法和应用，涉及电池技术领域。所述纳米硅基复合材料包括增强多孔支架和硅纳米颗粒；所述硅纳米颗粒分布于所述增强多孔支架表面和 / 或孔道内；所述增强多孔支架包括多孔基体、柔性中间层和增强体，所述柔性中间层位于多孔基体与增强体之间。硅纳米颗粒在锂硅合金化 / 去合金化过程中的体积膨胀和收缩，在增强多孔支架中经过多孔基体孔壁、柔性中间层、增强体三级结构得到有效吸收和束缚。纳米硅基复合材料的结构稳定性大幅提升，应用在锂离子电池中表现出很高的循环稳定性。
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