欢迎访问《电化学(中英文)》期刊官方网站,今天是

电化学(中英文) ›› 2008, Vol. 14 ›› Issue (2): 210-212.  doi: 10.61558/2993-074X.1893

• 研究论文 • 上一篇    下一篇

锰离子掺杂对LiCoPO_4性能的影响

栗欢欢;杨晓亮;魏进平;周震;阎杰;   

  1. 南开大学新能源材料化学研究所,南开大学新能源材料化学研究所,南开大学新能源材料化学研究所,南开大学新能源材料化学研究所,南开大学新能源材料化学研究所 天津300071,天津300071,天津300071,天津300071,天津300071
  • 收稿日期:2008-05-28 修回日期:2008-05-28 出版日期:2008-05-28 发布日期:2008-05-28

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

LI Huan-huan,YANG Xiao-liang,WEI Jin-ping,ZHOU Zhen,YAN Jie   

  1. (Institute of New Energy Material Chemistry,Nankai University,Tianjin 300071,China
  • Received:2008-05-28 Revised:2008-05-28 Published:2008-05-28 Online:2008-05-28

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.

关键词: 锂离子电池, 正极材料, 掺杂, LiCoPO4

Abstract: 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 Mn2+.The LiCo0.99Mn0.01PO4 cathode material exhibited optimal electrochemical performance with a discharge capacity of 130.6mAh/g at 0.1C rate.

Key words: lithium ion battery;cathode material;ion doping, LiCoPO4

中图分类号: