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通过将涂覆有Si/CNTs/PVDF-HFP复合浆料的铜箔浸入水中，利用相转化法成功制备出三维多孔结构的复合材料，薄膜硅/碳纳米管/聚偏二氟乙烯-六氟丙烯共聚物（Si/CNTs/PVDF-HFP）复合材料，作为锂离子电池（LIBs）的负极材料。这种三维多孔PVDF-HFP聚合物框架不仅具备良好的柔韧性，还能有效承受在充放电过程中的巨大体积变化。同时，碳纳米管提供了连续的电子传输网络，从而提升了整体导电性能。Si/CNTs/PVDF-HFP复合材料在作为锂离子电池负极材料时，在0.2C电流密度下初始放电比容量达到3101.3 mAh/g，并且经过100次循环后仍保持 942.3 mAh/g的放电比容量。在大倍率3C电流密度下，该复合材料放电比容量仍能达到704 mAh/g，说明Si/CNTs/PVDF-HFP电极在较大电流密度下，仍然具有良好的储锂性能和循环稳定性。（1C = 3580 mAh/g）。
Abstract：A three-dimensional porous structured composite film， silicon/carbon nanotubes/poly (vinylidene fluoride-co-hexafluoropropylene) (Si/CNTs/PVDF-HFP) composite， was successfully fabricated as an anode material for lithium-ion batteries (LIBs) via a phase inversion method by immersing copper foil coated with Si/CNTs/PVDF-HFP composite slurry into water. This three-dimensional porous PVDF-HFP polymer framework not only exhibits good flexibility but also effectively accommodates the substantial volume changes during charge/discharge processes. Meanwhile， the carbon nanotubes provide a continuous electron transport network， thereby enhancing the overall electronic conductivity. When employed as an anode material for LIBs， the Si/CNTs/PVDF-HFP composite delivers an initial discharge specific capacity of 3101.3 mAh/g at a current density of 0.2 C and retains a discharge specific capacity of 942.3 mAh/g after 100 cycles. Even at a high rate of 3 C， the composite still achieves a discharge specific capacity of 704 mAh/g， indicating that the Si/CNTs/PVDF-HFP electrode possesses good lithium storage capability and cycling stability at relatively high current densities. (1 C = 3580 mAh/g).
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基本信息:
中图分类号:TB332;TM912
引用信息:
[1]程凤丽,王涛.Si/CNTs/PVDF-HFP复合材料的制备及其储锂性能研究[J].电池工业().
基金信息:
国家自然科学基金（项目编号：21705027，21974029）
2026-04-07
2026-04-07
2026-04-07