伪-Fe2O3 Nanoparticle-Loaded Carbon Nanofibers as Stable and High-Capacity Anodes for Rechargeable Lithium-Ion Batteries

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• 作者：Liwen Ji ; Ozan Toprakci ; Mataz Alcoutlabi ; Yingfang Yao ; Ying Li ; Shu Zhang ; Bingkun Guo ; Zhan Lin ; Xiangwu Zhang
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2012
• 出版时间：May 23, 2012
• 年：2012
• 卷：4
• 期：5
• 页码：2672-2679
• 全文大小：604K
• 年卷期：v.4,no.5(May 23, 2012)
• ISSN：1944-8252

文摘

伪-Fe₂O₃ nanoparticle-loaded carbon nanofiber composites were fabricated via electrospinning FeCl₃路6H₂O salt-polyacrylonitrile precursors in N,N-dimethylformamide solvent and the subsequent carbonization in inert gas. Scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, and elemental analysis were used to study the morphology and composition of 伪-Fe₂O₃-carbon nanofiber composites. It was indicated that 伪-Fe₂O₃ nanoparticles with an average size of about 20 nm have a homogeneous dispersion along the carbon nanofiber surface. The resultant 伪-Fe₂O₃-carbon nanofiber composites were used directly as the anode material in rechargeable lithium half cells, and their electrochemical performance was evaluated. The results indicated that these 伪-Fe₂O₃-carbon nanofiber composites have high reversible capacity, good capacity retention, and acceptable rate capability when used as anode materials for rechargeable lithium-ion batteries.

Keywords:

lithium-ion batteries; anodes; nanofibers; carbon; 伪-Fe₂O₃