锂离子电池正极材料LiFe(MoO4)2的制备及其电化学性质

Synthesis and Electrochemical Properties of LiFe(MoO_4)_2 as a Positive Electrode Material for Lithium Ion Batteries

采用固相法合成纯相的LiFe（MoO4）2材料.利用X射线衍射（XRD）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）和超导量子干涉仪（SQUID）对其晶体结构及其磁学性质进行研究,并采用恒流充放电测试研究该材料在3.0-1.0V内的电化学性质.电化学测试表明,LiFe（MoO4）2作为正极材料具有良好的循环性能,稳定比容量为200mA·h/g,充放电效率为98.5%.

LiFe（MoO4）2was synthesized by solid state reaction and its structural and magnetic property were investigated by X-ray diffraction（XRD）,scanning electron microscopy（SEM）,transmission electron microscopy（TEM） and superconducting quantum interference device（SQUID）.Furthermore,its electrochemical properties were tested between 3.0Vand 1.0V.The electrochemical tests show that,as a positive electrode material,LiFe（MoO4）2demonstrates good cycle performance with a reversible capacity of 200mA·h/g and high coulombic efficiency of 98.5%,respectively.