Porous LiFePO<inf>4</inf>/C microspheres as high-power cathode materials for lithium ion batteries

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Journal Article
Journal of Nanoscience and Nanotechnology, 2013, 13 (5), pp. 3655 - 3659
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Porous LiFePO4/C microspheres were synthesized by a novel hydrothermal reaction combined with high-temperature calcinations. The morphology of the prepared material was investigated by fieldemission scanning electron microscopy. Porous microspheres with diameters around 1-3 μm were obtained, which consisting of primary LiFePO4 nanoparticles. The electrochemical performances of the as-prepared LiFePO4 microspheres were evaluated by cyclic voltammetry, electrochemical impedance spectroscopy and galvanostatic charge-discharge cycling. The carbon coated LiFePO4 microspheres showed lower polarization, higher rate capability, and better cycling stability than that of pristine LiFePO4 microspheres, indicating the potential application as the cathode material for high-power lithium ion batteries. Copyright © 2013 American Scientific Publishers.
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