Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
11011616 | International Journal of Hydrogen Energy | 2018 | 10 Pages |
Abstract
LiFePO4/graphene (LiFePO4/G) cathode material was prepared by a facile ultrasound assisted high temperature ball milling method. Ultrasound assisted was found to be effective to promote the dispersing of the precursor in solution. Physical and electrochemical properties of LiFePO4/G were studied. The results exhibited that graphene combined with the LiFePO4 clusters giving rise to a conductive network. LiFePO4/G displayed a well-crystallized LiFePO4 structure and excellent electrochemical performance. The initial discharge capacities of LiFePO4/G were 162.8, 156.8, 151.9, 145.8, 137.5 and 121.6Â mAhgâ1 at rates of 0.1, 0.5, 1.0, 2.0, 5.0 and 10Â C, respectively. Moreover, at 0.1Â C-rate, the capacity was 160.4Â mAhgâ1 over 100 cycles with a capacity retention of 98.5%. It is concluded that graphene is a conductive additive which can enhance the electrochemical properties of LiFePO4.
Related Topics
Physical Sciences and Engineering
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Authors
Xuetian Li, Zhongbao Shao, Kuiren Liu, Qing Zhao, Guangfu Liu, Binshi Xu,