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Electrochemical performance of C-La3+ codoped LiFePO4 synthesized by microwave heating

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Abstract

La3+ was selected to elevate the lattice electronic conductivity of LiFePO4, and LiFePO4/(C+La3+) cathode powders were synthesized by microwave heating using a domestic microwave oven for 35 min. The microstructures and morphologies of the synthesized materials were investigated by XRD and SEM. The electrochemical performances were evaluated by galvanostatic charge-discharge. The electrochemical performance of LiFePO4 with different La3+ contents was studied. Results indicated that the initial specific discharge capacity of LiFePO4/(C+La3+) composites with 2% La3+ (116.3 mAh/g) was better than that of LiFePO4/C (105.4 mAh/g). The addition of La3+ further improved the electrochemical properties. So the codoping is an effective method to improve the electrochemical performance.

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Authors and Affiliations

  1. Key Laboratory of the Ministry of Education for Advanced Ceramics and Machining Technology, Tianjin University, Tianjin, 300072, China

    Yan Cui, Miao Wang, Ruisong Guo & Zhaohe Xu

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  1. Yan Cui
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  2. Miao Wang
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  3. Ruisong Guo
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  4. Zhaohe Xu
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Correspondence to Ruisong Guo.

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Cui, Y., Wang, M., Guo, R. et al. Electrochemical performance of C-La3+ codoped LiFePO4 synthesized by microwave heating. Rare Metals 28, 127–131 (2009). https://doi.org/10.1007/s12598-009-0025-3

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  • DOI: https://doi.org/10.1007/s12598-009-0025-3

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