Solvent-Controlled Synthesis of NiO鈥揅oO/Carbon Fiber Nanobrushes with Different Densities and Their Excellent Properties for Lithium Ion Storage

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• 作者：Yuehua Wei ; Feilong Yan ; Xuan Tang ; Yazi Luo ; Ming Zhang ; Weifeng Wei ; Libao Chen
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2015
• 出版时间：October 7, 2015
• 年：2015
• 卷：7
• 期：39
• 页码：21703-21711
• 全文大小：532K
• ISSN：1944-8252

文摘

NiO鈥揅oO nanoneedles are grown on carbon fibers by a solvothermal strategy to form nanobrushes. The density of nanobrushes can be easily controlled by altering the solvents. The synthesis mechanism of NiO鈥揅oO/carbon fiber nanobrushes is investigated by the time-dependent experiments in detail. As anodes for lithium ion batteries, the NiO鈥揅oO/carbon fiber nanobrushes synthesized in ethanol show excellent properties with a discharge capacity of 801 mA h g^鈥? after 200 cycles at a current density of 200 mA g^鈥?. The improvement can be ascribed to the carbon fibers as the highway for electrons and the interspace between NiO鈥揅oO nanoneedles to accommodate the volume change and maintain the structural stability.