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

doi:10.61558/2993-074X.1893

电化学 >

2008 , Vol. 14 >Issue 2: 210 - 212

DOI: https://doi.org/10.61558/2993-074X.1893

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

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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

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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

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.

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

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