LiFePO₄/C 复合材料的合成及其电化学性能
曹敦俊¹，马迪辉¹，陈晗²
（1. 株洲市第二中学，湖南株洲412000；2. 湖南工业大学，湖南株洲412011）
摘要： 采用柳絮为碳源和模板，通过蒸发自组装合成LiFePO₄/C复合材料。柳絮的添加量对复合材料的形貌影响较明
显，当柳絮添加量为5%时，材料的形貌完整，柳絮碳上均匀覆盖着LiFePO₄纳米线。复合材料在0.1C倍率下放电比容量最
高，为141 mA·h/g，倍率为1C时，放电容量达到130 mA·h/g以上，循环600周后，容量保持率在95%以上。
关键词： 锂离子电池；LiFePO₄；复合材料；电化学性能
中图分类号： TM912 文献标识码： A 文章编号： 2095-0802-(2016)01-0081-02
Preparation and Electrochemical Performance of LiFePO₄ /C Composite
CAO Dunjun¹，MA Dihui²，CHEN Han²
(1. No. 2 Middle School of Zhuzhou, Zhuzhou 412000, Hunan, China；2. Hunan University of Technology, Zhuzhou 412011,
Hunan, China)
Abstract: LiFePO₄/C composites were synthesized by evaporative self-assembly using catkins as carbon source and template. The
adding quantity of catkins in composite material has an obvious influence on their morphology. When 5% catkins are applied, the
composite material exhibits perfect morphology, and catkin carbon is evenly covered by LiFePO₄ nanowires. The composite
delivers the highest discharge capacity of 141 mA·h/g at 0.1C rate, the discharge capacity under 1 C rate reaches 130 mA·h/g,
the capacity retention was above 95% after 600 cycles.

Key words: lithium ion batteries; LiFePO₄; composite materials; electrochemical performance