纳米CuO/C复合物的制备与电化学性能

Preparation of copper oxide-carbon nanocomposites and its electrochemical properties

为改善氧化物负极材料的循环性能和充放电比容量,采用熔融盐法制备了作为锂离子电池负极材料的纳米CuO/C复合物粉末。用X-射线衍射对样品结构进行分析,透射电镜对样品形貌进行表征,同时对样品进行电化学性能测试。结果表明,采用熔融盐法可以制备出粒径范围为50～70 nm的纳米CuO/C复合物;在40～50放电周期,放电容量保持率为95%。

To improve the cycle performance and charge/discharge capacity of oxide material, nano CuO/C composites was synthesized by molten salt method as anode materials for lithium-ion batteries. Its crystalline structure was analyzed by X-ray diffraction, its morphology was characterized by transmission electron microscope, and its electrochemical performance was tested. The results show that nano CuO/C composites can be obtained by molten salt method with the as-prepared particle size of 50-70 nm;the discharge capacity retention of nano CuO/C composites is 95%from the 40th cycle to the 50th cycle.