Nickel-modified silicon / graphite fiber composite negative electrode material, preparation method, application and lithium ion battery

By generating nano-nickel particles and depositing amorphous silicon thin films on the surface of graphite fibers, the problem of weak silicon/graphite interface bonding was solved, improving conductivity and cycle stability, and achieving high-efficiency lithium-ion battery anode material performance.

CN122417846APending Publication Date: 2026-07-17SHANGHAI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI UNIV
Filing Date
2026-05-21
Publication Date
2026-07-17

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Abstract

本发明涉及锂离子电池负极材料领域，具体涉及一种镍修饰硅 / 石墨纤维复合负极材料、制备方法、应用和锂离子电池，所述复合负极材料包括石墨纤维、纳米镍颗粒和非晶硅薄膜，其中，所述石墨纤维之间相互交织形成自支撑三维导电网络；所述纳米镍颗粒通过碳热还原法原位负载于所述石墨纤维的表面；所述非晶硅薄膜通过磁控溅射技术沉积于所述石墨纤维及所述纳米镍颗粒的外表面。本发明通过碳热还原法在石墨纤维表面原位生成纳米镍颗粒，镍颗粒与石墨纤维结合紧密，无需额外粘结剂，且颗粒分布均匀。
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