Enhanced performance of SiO/Fe2O3 composite as an anode for rechargeable Li-ion batteries
Enhanced performance of SiO/Fe2O3 composite as an anode for rechargeable Li-ion batteries
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DOI：
10.1016/j.elecom.2012.12.013
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发表时间：
2013-03
影响因子：
5.4
通讯作者：
Mingjiong Zhou;Mikhail L Gordin;Shuru Chen;T. Xu;Jiangxuan Song;Dongping Lv;Donghai Wang
中科院分区：
文献类型：
--
作者：
Mingjiong Zhou;Mikhail L Gordin;Shuru Chen;T. Xu;Jiangxuan Song;Dongping Lv;Donghai Wang
氧化铁 (Fe2O3) 用于增强 SiO 的电化学性能，作为锂离子电池的有前途的阳极。通过机械研磨合成了由 SiO 包覆 Fe2O3 纳米粒子组成的 SiO/Fe2O3 复合材料，并通过 X 射线衍射、扫描电子显微镜、透射电子显微镜和能谱 X 射线光谱仪对其进行了表征。然后研究了 SiO/Fe2O3 复合材料、SiO 和机械研磨 SiO 作为锂离子电池负极的电化学性能。与两种不含 Fe2O3 的 SiO 样品相比，SiO/Fe2O3 复合材料表现出优越的性能，包括提高的初始库仑效率、增强的倍率性能和更好的容量保持率。
Iron oxide (Fe2O3) was utilized to enhance the electrochemical properties of SiO as a promising anode for Li-ion batteries. An SiO/Fe2O3composite, composed of SiO coated with Fe2O3nanoparticles, was synthesized by mechanical milling and characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and energy-dispersive X-ray spectroscopy. The electrochemical properties of the SiO/Fe2O3composite, SiO, and mechanically milled SiO as anodes for Li-ion batteries were then investigated. The SiO/Fe2O3composite showed superior performance compared with the two Fe2O3-free SiO samples, including an increased initial coulombic efficiency, enhanced rate capability, and better capacity retention.