MoO_3包覆对锂一次电池CuF_2正极材料性能的影响  

Effects of MoO_3 encapsulating on performances of CuF_2 cathode material for application of lithium primary batteries

作　　者：刘修明[1] 王先友[1] 伍文[1] 王欣[1] 王国宝[1] 杨顺毅[1] 

机构地区：[1]湘潭大学化学学院环境友好化学与应用教育部重点实验室,湘潭411105

出　　处：《中国有色金属学报》2010年第2期288-292,共5页The Chinese Journal of Nonferrous Metals

基　　金：国家自然科学基金资助项目(20871101;20673092)

摘　　要：通过球磨CuF2和MoO3的混合物,制成CuF2/MoO3复合材料。通过X射线衍射(XRD)、扫描电镜(SEM)和电化学测试等研究CuF2/MoO3复合材料的结构和电化学性能。结果表明:MoO3晶粒均匀地附着在CuF2的表面,形成均匀的导电网,从而使制备的CuF2/MoO3复合材料具有高导电性,可作为锂一次电池正极活性材料。以0.1C倍率放电,截止电压为1.5V,CuF2/MoO3复合材料放电比容量高达483mA·h/g,放电电位平台为2.5V,明显高于CuF2正极材料的278mA·h/g,接近其理论容量528mA·h/g。The CuF2/MoO3 composite was prepared by milling the mixture of CuF2 and MoO3. The structural and electrochemical properties of the CuF2/MoO3 composite were investigated by X-ray diffraction （XRD）, scanning electron microscope （SEM） and electrochemical experiments. The results indicate that the MoO3 grains homogeneously coat on the surface of CuF2 and then form a high conductive matrix, which can be used for cathode material of lithium primary batteries. The specific discharge capacity of CuF2/MoO3 composite is as high as 483 mA-h/g at a rate of 0.1C and the cutoff of 1.5 V, which is apparently higher than that of the lithium primary battery using pure CuF2 （278 mA.h/g） as cathode active material and close to the theoretical specific capacity of CuF2 （528 mA.h/g）.

关 键 词：锂一次电池 正极材料 CuF2/MoO3复合材料 电化学性能 

分 类 号：TM912[电气工程—电力电子与电力传动]