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Acta Phys. -Chim. Sin.  2006, Vol. 22 Issue (07): 840-844    DOI: 10.1016/S1872-1508(06)60037-5
Article     
One-step Solid-state Synthesis and Electrochemical Performance of Nb-doped LiFePO4/C
ZHUANG Da-Gao;ZHAO Xin-Bing;XIE Jian;TU Jian;ZHU Tie-Jun;CAO Gao-Shao
State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, P. R. China
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Abstract  Nb-doped LiFePO4/C was synthesized using one-step solid-state method. The effect of Nb contents on the electrochemical performance was investigated. The results showed that the electrochemical performances were remarkably promoted. The discharge capacities of Li0.96Nb0.008FePO4/C cathode material were 161, 148, and 132 mAh•g−1 at the charge and discharge rates of 0.5C, 1C, and 2C, respectively. The results of cyclic voltammetry and EIS analyses showed that the resistance and polarization of the LiFePO4/C composite electrode could be effectively decreased by Nb doping, which would improve the electron conductivity of LiFePO4.

Key wordsLithium ion battery      Cathode material      Nb doping      LiFePO4/C      Electrochemical performance     
Received: 21 February 2006      Published: 27 June 2006
Corresponding Authors: ZHAO Xin-Bing     E-mail: zhaoxb@zju.edu.cn
Cite this article:

ZHUANG Da-Gao;ZHAO Xin-Bing;XIE Jian;TU Jian;ZHU Tie-Jun;CAO Gao-Shao. One-step Solid-state Synthesis and Electrochemical Performance of Nb-doped LiFePO4/C. Acta Phys. -Chim. Sin., 2006, 22(07): 840-844.

URL:

http://www.whxb.pku.edu.cn/10.1016/S1872-1508(06)60037-5     OR     http://www.whxb.pku.edu.cn/Y2006/V22/I07/840

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