Graphitized carbon and graphene modified Fe₂O₃/Li₄Ti₅O₁₂ as anode material for lithium ion batteries

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• 作者：Qiufen Wang ; Mengwei Lu ; Juan Miao ; Shuai Yang ; Tao Wen and Jiufang Sun
• 刊名：Surface and Interface Analysis
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：49
• 期：1
• 页码：63-70
• 全文大小：766K
• ISSN：1096-9918

文摘

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