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研究论文

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
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  • 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

  网络出版日期: 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
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  • (Institute of New Energy Material Chemistry,Nankai University,Tianjin 300071,China

Received date: 2008-05-28

  Revised date: 2008-05-28

  Online published: 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.

本文引用格式

栗欢欢 , 杨晓亮 , 魏进平 , 周震 , 阎杰 . 锰离子掺杂对LiCoPO_4性能的影响[J]. 电化学, 2008 , 14(2) : 210 -212 . DOI: 10.61558/2993-074X.1893

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.
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