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Acta Phys. -Chim. Sin.  2009, Vol. 25 Issue (02): 201-206    DOI: 10.3866/PKU.WHXB20090201
Article     
Effect of Fluoroethylene Carbonate Additive on the Performance of Lithium Ion Battery
XU Jie; YAO Wan-Hao; YAO Yi-Wen; WANG Zhou-Cheng; YANG Yong
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian Provine, P. R. China
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Abstract  Fluoroethylene carbonate (FEC) with a volume ratio of 2%was added to the electrolyte containing 1 mol·L-1 LiPF6 in ethylene carbonate (EC), dimethyl carbonate (DMC), and methyl ethyl carbonate (EMC) (1:1:1 by volume). The effects of FEC on lithiumion battery performance and on the mesocarbon microbead (MCMB) electrode/electrolyte interphase were studied by cyclic voltammetry (CV), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and electrochemical impedance spectroscopy (EIS). The results indicated that the application of a 2% (volume ratio) of FEC suppressed electrolyte decomposition and caused the formation of an excellent solid electrolyte interphase (SEI) film on the MCMB electrode. The battery resistance decreased while the specific capacity and cyclic stability of the battery increased.

Key wordsAdditive      Fluoroethylene carbonate      Lithiumion battery      Cyclic voltammetry      Energy dispersive spectroscopy      Electrochemical impedance spectroscopy     
Received: 10 September 2008      Published: 01 December 2008
MSC2000:  O646  
Corresponding Authors: WANG Zhou-Cheng     E-mail: zcwang@xmu.edu.cn
Cite this article:

XU Jie; YAO Wan-Hao; YAO Yi-Wen; WANG Zhou-Cheng; YANG Yong. Effect of Fluoroethylene Carbonate Additive on the Performance of Lithium Ion Battery. Acta Phys. -Chim. Sin., 2009, 25(02): 201-206.

URL:

http://www.whxb.pku.edu.cn/10.3866/PKU.WHXB20090201     OR     http://www.whxb.pku.edu.cn/Y2009/V25/I02/201

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