Influence of pH on Electrochemical Performances of Iron Phosphate (FePO4•xH2O) Particles and LiFePO4/C Composites

Yi Jie Gu; Peng Liu; Yun Bo Chen; Hong Quan Liu; Yan Min Wang; Fei Xiang Hao; Qing Gang Zhang; Shu Qi Li

doi:10.4028/www.scientific.net/AMR.643.100

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Electrochemical Properties of LiFePO₄/C Composite by Spray-Drying Method
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Influence of pH on Electrochemical Performances of Iron Phosphate (FePO₄•xH₂O) Particles and LiFePO₄/C Composites
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 643Influence of pH on Electrochemical Performances of...

Influence of pH on Electrochemical Performances of Iron Phosphate (FePO₄•xH₂O) Particles and LiFePO₄/C Composites

Abstract:

The effect of pH concentrations on the size and morphology of FePO₄•xH₂O particles synthesized in a hydrothermal reactor was investigated in this work. FePO₄•xH₂O was prepared through co-precipitation by employing Fe(NO₃)₃•9H₂Oand H₃PO₄ as raw materials. The LiFePO₄ obtained through lithiation of FePO₄•xH₂O by using glucose as a reducing agent at 700°C. The electrochemical performance of LiFePO₄ powder synthesized at 700°C were evaluated using coin cells by galvanostatic charge/discharge .The results indicated that the synthesized LiFePO₄/C composites (pH=2) showed a superior electrochemical capacity of 146 mAh/g and possessed a capacity favorable cycling maintenance at the 0.1C rate and high electronic conductivity.

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Advanced Materials Research (Volume 643)

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100-103

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https://doi.org/10.4028/www.scientific.net/AMR.643.100

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January 2013

Authors:

Yi Jie Gu, Peng Liu, Yun Bo Chen, Hong Quan Liu, Yan Min Wang, Fei Xiang Hao, Qing Gang Zhang, Shu Qi Li

Keywords:

Electrochemical Performance, Iron Phosphate (FePO₄•xH₂O), Lithium Iron Phosphate (LiFePO₄), Lithium-Ion Battery

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