铜掺杂对尖晶石锂锰氧化物性能的影响  

Effects of Cu-doping on electrochemical performance of spinel LiMn_2O_4

作　　者：詹清光[1] 曾荣华[1] 吕东生[1] 李伟善[1] 

机构地区：[1]华南师范大学化学与环境学院,广东广州510006

出　　处：《电池工业》2007年第4期254-257,共4页Chinese Battery Industry

基　　金：广东省自然科学基金项目(编号031533)

摘　　要：用溶胶-凝胶法制备了不同量铜掺杂尖晶石锂锰氧化物,并用扫描电镜、恒电流充放电、循环伏安等方法研究了制备样品的性能。结果表明:随掺杂量增加,样品材料的充放电容量降低,充放电效率增大,循环稳定性增加。Spinels LiMn2O4 with different Cu-doping compositions were prepared by sol-gel process and the products were characterized by scaning electron micrographs , constant current charge-discharge and cyclic voltammogramso Results show that the charge/discharge capacity decrease with increasing of the doping compositions, however charge/discharge efficiency and cyclic properties increase.

关 键 词：锂锰氧化物 充放电 循环伏安 铜掺杂 

分 类 号：TM912.9[电气工程—电力电子与电力传动]