Abstract：Micro layer of GO was obtained by micro adjustment and control. LiFePO4/graphene composite cathode materials were synthesized using a spray drying followed by high temperature reduction modification method, to improve conductivity of LiFePO4 with excellent conductivity of graphene. The structure, morphology and electrochemical performance of the composite materials were characterized by XRD, FTIR, SEM, TEM and electrochemical measurement technologies. The three-dimensional conductive network was constructed by graphene composite in material particles, which can improve the charge transfer rate of the interface of electrolyte/electrode materials and the electrochemical performance of LiFePO4. The results show that the discharge specific capacity of LiFePO4 without graphene is only 155mAh/g, while the discharge specific capacity of LiFePO4/graphene is 164mAh/g at 0.1C.The discharge specific capacity of LiFePO4/graphene is 140,119mAh/g at 1,2C,respectively.
邓凌峰, 覃昱焜, 彭辉艳, 连晓辉, 吴义强. 高温还原GO制备LiFePO4/石墨烯复合正极材料及表征[J]. 材料工程, 2018, 46(2): 9-15.
DENG Ling-feng, QIN Yu-kun, PENG Hui-yan, LIAN Xiao-hui, WU Yi-qiang. Preparation and Characterization of LiFePO4/Graphene Composite Cathode Materials by High Temperature Reduction GO. Journal of Materials Engineering, 2018, 46(2): 9-15.
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