Abstract
ABSTRACTThe LiFePO4 material was successfully prepared by an effective and controllable hydrothermal method with the assistance of ethylene glycol (EG). Then, different carbon sources (glucose and carbon nanotubes (CNTs)) were used to synthesize LiFePO4/C and LiFePO4/CNTs composites and roundly investigated the performance of composites. The X-ray diffraction (XRD) showed that the composites had excellent crystallinity. Electrochemical performance tests demonstrated that the LiFePO4/CNTs composite exhibited the best discharge specific capacity. The special capacity was 154.6 mAh/g at 0.1C, which was higher than LiFePO4/C composite (144.8 mAh/g at 0.1C). The cycling performances of LiFePO4/CNTs composite showed better performances than LiFePO4/C composite at 1C and 10C. It can be attributed to a three-dimensional network structure of LiFePO4/CNTs that enhanced the electrochemical performance.
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