锰离子掺杂对LiCoPO_4性能的影响  

Effect of Mn^(2+) Doping on the Electrochemical Performance of LiCoPO_4

作　　者：栗欢欢[1] 杨晓亮[1] 魏进平[1] 周震[1] 阎杰[1] 

机构地区：[1]南开大学新能源材料化学研究所,天津300071

出　　处：《电化学》2008年第2期210-212,共3页Journal of Electrochemistry

基　　金：国家973计划项目(2002CB211800);863计划项目(2007AA03Z225);天津市应用基础研究计划项目(06YFJMJC13300)资助

摘　　要：应用溶胶-凝胶法合成了锰掺杂的LiCoPO4正极材料.X射线衍射、扫描电镜和循环伏安等电化学测试表明,少量锰离子掺杂不影响LiCoPO4的晶格结构,且明显改善了LiCoPO4正极材料电化学性能.锰掺杂量为1%时得到的LiMn0.01Co0.99PO4正极材料具有最好的电化学性能,以0.1C倍率放电时,首次放电比容量可达130.6 mAh/g.Undoped and Mn-doped LiCoPO4 cathode materials were synthesized via a novel sol-gel route. The effects of Mn doping on the structure, morphology and electrochemical performance of the LiCo1-xMnxPO4 cathode material were investigated. X-ray diffraction analysis indicated that the olivine structure of the LiCo1-xMnxPO4 composite was well maintained after the doping of a small quantity of Mn^2＋ The LiCo0.99Mn0.01PO4 cathode material exhibited optimal electrochemical performance with a discharge capacity of 130.6mAh/g at 0.1C rate.

关 键 词：锰离子掺杂对LiCoPO4性能的影响 

分 类 号：TM911[电气工程—电力电子与电力传动]