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Preparation and performance study of LiFePO4 and xLiFePO4·yLi3V2(PO4)3

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Abstract

LiFePO4/C and xLiFePO4·yLi3V2(PO4)3 composites were successfully prepared by the high-temperature carbon thermal reduction method using LiOH·H2O, Fe2O3, NH4H2PO4, five different compounds (citric acid, polyaniline, carboxymethyl cellulose, E-44 epoxy resin, and tartaric acid), and V2O5 as raw materials. X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM), laser particle size analysis, specific surface area measurements, and electrochemical performance testing were used to study their structure, morphology, and electrochemical properties. The results showed that the LiFePO4/C materials exhibited significantly different polymerization degree, XRD spectra, specific surface area, and particle size distribution. Finally, 9LiFePO4·Li3V2(PO4)3 and LiFePO4/C coated using tartaric acid were shown to exhibit improved electrochemical performance.

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Authors and Affiliations

  1. School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang, 110159, China

    Zhongcai Shao, Jili Xia, Xinqing Liu & Guangyu Li

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  1. Zhongcai Shao
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  2. Jili Xia
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  3. Xinqing Liu
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  4. Guangyu Li
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Correspondence to Jili Xia.

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Shao, Z., Xia, J., Liu, X. et al. Preparation and performance study of LiFePO4 and xLiFePO4·yLi3V2(PO4)3 . Res Chem Intermed 42, 4121–4133 (2016). https://doi.org/10.1007/s11164-015-2263-3

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  • DOI: https://doi.org/10.1007/s11164-015-2263-3

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