Carbon-Nanotube-Decorated Nano-LiFePO4 @C Cathode Material with Superior High-Rate and Low-Temperature Performances for Lithium-Ion Batteries

Authors

  • Xing-Long Wu,

    1. Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, P. R. China, Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing 100190, P. R. China
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  • Yu-Guo Guo,

    Corresponding author
    1. Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, P. R. China, Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing 100190, P. R. China
    • Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, P. R. China, Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing 100190, P. R. China.
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  • Jing Su,

    1. Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, P. R. China, Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing 100190, P. R. China
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  • Jun-Wei Xiong,

    1. Shandong Wina Green Power Co., Ltd, Shouguang 262705, Shandong, P. R. China
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  • Ya-Li Zhang,

    1. Shandong Wina Green Power Co., Ltd, Shouguang 262705, Shandong, P. R. China
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  • Li-Jun Wan

    1. Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, P. R. China, Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing 100190, P. R. China
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Abstract

original image

A novel LiFePO4 cathode material (LFP@C/CNT) is demonstrated, whereby the LiFePO4 nanoparticles are decorated with both an amorphous carbon coating and conducting carbon nanotubes. This material exhibits much improved electrochemical properties in terms of specific capacity, rate capability, cycling, and low-temperature performances benefiting from the enhanced electronic and ionic conductivities, stabilized interface and lower charge polarization compared to pristine LFP and other carbon-decorated LFP materials.

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