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    Publication Date: 2018-07-05
    Description: Publication date: 1 September 2018 Source: Electrochimica Acta, Volume 283 Author(s): Chang-sheng An, Bao Zhang, Lin-bo Tang, Bin Xiao, Jun-chao Zheng LiFePO 4 is one of the most promising cathode materials for Li-ion batteries. However, its low electronic conductivity and slow Li-ion diffusion rate lead to poor electrochemical performance, especially poor rate performance. The hybrid of LiFePO 4 /Nitrogen and Sulfur co-doped graphene is successfully synthesized via a self-assembly method. Given its Nitrogen and Sulfur co-doped graphene matrix, the hybrid exerts a significantly impact on the electron conductivity of LiFePO 4 , resulting in excellent electrochemical properties and power density. The LiFePO 4 composite has reversible capacity of 106.1 mAhg −1  at 10 C and 94.6 mAhg −1 at 15 C. Moreover, with less than 5% loss of discharge capacity after 500 cycles at 10 C, the Nitrogen and Sulfur co-doped graphene can effectively improve the electrochemical performance of LiFePO 4 .
    Print ISSN: 0013-4686
    Electronic ISSN: 1873-3859
    Topics: Chemistry and Pharmacology , Physics
    Published by Elsevier
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