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Influence of Carbon Sources on the Electrochemical Performance of LiFePO4/C Composite Cathode Material

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Abstract:

LiFePO4/C cathode material with different carbon sources was synthesized by using a two-step carbothermal reduction method. The structure and electrochemical properties of the samples were characterized by XRD, SEM and galvano-static charge-discharge method. The effect of different carbon sources on the structure, morphology and its electrochemical properties of the LiFePO4/C composite materials were investigated. The results showed that the properties of the samples depended on carbon sources, significantly. The sample synthesized by citric acid as carbon source had the best electrochemical performance. The reason of performance difference of the LiFePO4/C composite materials caused by carbon source was discussed.

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Info:

Periodical:

Advanced Materials Research (Volumes 287-290)

Pages:

1322-1326

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.287-290.1322

Citation:

Cite this paper

Online since:

July 2011

Authors:

Xiu Juan Qin, Guang Jie Shao, Hong Lian Wu

Keywords:

Carbon Source, Carbothermal Reduction, LiFePO4/C, TG-DTA Analysis

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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