溶胶凝胶法合成LiCuVO_4及其电化学性能研究  

Sol-gel Synthesis and Electrochemical Performance of LiCuVO_4

作　　者：张孟雄[1] 薛迎辉[1] 张友祥[1] 

机构地区：[1]武汉大学化学与分子科学学院,武汉430072

出　　处：《化学通报》2012年第10期935-938,共4页Chemistry

基　　金：国家自然科学基金项目(20901062)资助

摘　　要：以CH3COOLi.2H2O、Cu(NO3)2.3H2O、V2O5和双氧水(30%)为原料,采用溶胶凝胶法合成了LiCuVO4,其结构、组成和形貌经XRD和SEM确认。结果表明,本文所合成的LiCuVO4具有隧道结构的形貌,颗粒粒径为0.2～6μm。将LiCuVO4作为锂离子电池正极材料,首次循环的放电比容量达到160mAh/g;而作为负极材料,其最大放电比容量达到481mAh/g。在两种电化学测试中,LiCuVO4都显示了良好的循环性能。LiCuVO4 was synthesized by a sol-gel method with CH3COOLi·2H2O,Cu（NO3）2·3H2O,V2O5 and hydrogen peroxide（30%） as the raw material.Its structure,composition and morphology were characterized by XRD and SEM.The results showed that the sample possesses a dense microporous tunnel morphology and particle size in the range of 0.2-6μm.By using as-prepared LiCuVO4 as a cathode material for lithium-ion battery,the first cycle discharge specific capacity was 160mAh/g;and as an anode material for battery,the maximum discharge capacity was 481mAh/g.In the two electrochemical tests,LiCuVO4 both showed good cycling performance.

关 键 词：溶胶凝胶法LiCuVO4 锂离子电池 电化学性能 

分 类 号：TM912[电气工程—电力电子与电力传动]