Graphitized carbon and graphene modified Fe2O3/Li4Ti5O12 as anode material for lithium ion batteries |
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Authors: | Qiufen Wang Mengwei Lu Juan Miao Shuai Yang Tao Wen Jiufang Sun |
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Affiliation: | School of Physics and Chemistry, Henan Polytechnic University, Jiaozuo, China |
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Abstract: | Graphitized carbon (GC) and graphene (GE) modified Fe2O3/Li4Ti5O12 (LTO) composites have been synthesized via a solid‐state reaction, respectively. The structure, morphology and electrochemical performance of the materials have also been characterized with X‐ray diffraction (XRD), scanning electron microscope (SEM) with an energy dispersive spectroscopy (EDS) system, X‐ray photoelectron spectrometer (XPS), Fourier transform infrared spectroscopy (FTIR) and electrochemical measurements. The discharge capacities of Fe2O3/LTO, GC/Fe2O3/LTO and GE/Fe2O3/LTO are 100.2 mAh g?1, 207.5 mAh g?1 and 238.9 mAh g?1 after 100 cycles at the current density of 176 mA g?1. The cyclic stability and rate capability are in the order of GE/Fe2O3/LTO > GC/Fe2O3/LTO > Fe2O3/LTO because of the synergistic effect between GC (GE) and Fe2O3/LTO. Copyright © 2016 John Wiley & Sons, Ltd. |
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Keywords: | graphitized carbon graphene Fe2O3/Li4Ti5O12 composite solid‐state reaction electrochemical performance |
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