Synthesis of LiFePO4/C Using Fe2O3 Prepared from the Iron Sludge as Iron Source

化学工业与工程

Chemcial Industry and Engineering

2015, Vol. 32

Issue (1) :6-10 DOI: 10.13353/j.issn.1004.9533.2015.01.002

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Synthesis of LiFePO₄/C Using Fe₂O₃Prepared from the Iron Sludge as Iron Source

Chang Xiaolong, Tian Jianhua, Shan Zhongqiang

School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

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Abstract Fe was recovered from the iron sludge in form of Fe₂O₃ via a method including dissolving, reducing, ball milling, precipitating, being treated with dilute HNO₃ and calcining. LiFePO₄/C was synthesized using the Fe₂O₃ as iron source. The influence of ball milling and treatment with dilute HNO₃ on the performance of LiFePO₄/C was investigated. XRD patterns show that the LiFePO₄/C is single olivine-type phase and well crystallized. Particles of the LiFePO₄/C with size ranging from 100 nm to 150 nm distribute homogeneously. Electrochemical performance is investigated with galvanostatic charge/discharge tests. The LiFePO₄/C using Fe₂O₃ prepared via the optimal process as iron source shows good stability and rate performance due to the retention of Co, Cr and Ni.

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Keywords： lithium ion battery; lithium iron phosphate; Fe₂O₃; iron sludge

Received 2013-05-02;

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Chang Xiaolong, Tian Jianhua, Shan Zhongqiang.Synthesis of LiFePO₄/C Using Fe₂O₃Prepared from the Iron Sludge as Iron Source[J] Chemcial Industry and Engineering, 2015,V32(1): 6-10

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