High Performance N-Doped Mesoporous Carbon Decorated TiO2 Nanofibers as Anode Materials for Lithium-Ion Batteries

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• 作者：Myung-Hyun Ryu ; Kyu-Nam Jung ; Kyung-Hee Shin ; Kyoo-Seung Han ; Sukeun Yoon
• 刊名：The Journal of Physical Chemistry C
• 出版年：2013
• 出版时间：April 25, 2013
• 年：2013
• 卷：117
• 期：16
• 页码：8092-8098
• 全文大小：422K
• 年卷期：v.117,no.16(April 25, 2013)
• ISSN：1932-7455

文摘

N-doped mesoporous carbon decorated TiO₂ nanofibers were synthesized for the first time by a facile electrospinning process combined with subsequent heat treatment and investigated as an anode material for lithium-ion battery applications. The N-doped mesoporous carbon decorated TiO₂ nanofibers had continuous one-dimensional (1-D) geometry with a smooth surface and an average thickness of 250 nm. The nanofibers comprised both interconnected polycrystalline TiO₂ and numerous mesopores in N-doped carbon. After 100 cycles at current density of 33 mA/g, the N-doped mesoporous carbon decorated TiO₂ nanofibers still exhibited a high capacity of 264 mAh/g. This superior electrochemical performance is attributed to small TiO₂ crystallites, N-doped mesoporous carbon, favorable 1-D nanostructures, and smooth accommodation of the strain occurring during the charge鈥揹ischarge process.