A novel method to synthesize anatase TiO2 nanowires as an anode material for lithium-ion batteries

作者：Wu, Feixiang; Li, Xinhai^*; Wang, Zhixing; Guo, Huajun; Wu, Ling; Xiong, Xunhui; Wang, Xiaojuan

来源：Journal of Alloys and Compounds, 2011, 509(8): 3711-3715.

DOI：10.1016/j.jallcom.2010.12.182

• Lithium ion batteries
• Anatase
• Titanium dioxide
• Anode material
• Nanowires

We demonstrate a simple and novel approach for the synthesis of a kind of anatase TiO2 nanowires. The method is based on a hydrothermal method under normal atmosphere without using the complex Teflon-lined autoclave, high concentrations NaOH solution and long react time. The as-prepared materials are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and electrochemical measurements. The obtained anatase TiO2 nanowires show excellent performance. There is a potential plateau at 1.77 and 1.88 V in the process of Li insertion and extraction, and the initial Li insertion/extraction capacities are 283 and 236 mAh g(-1) at the density of 20 mA g(-1). respectively. In the 20th cycle, the reversible capacities still remain about 216 and 159 mAh g(-1) at the current densities of 20 and 200 mAg(-1), respectively, and the coulombic efficiency is more than 98%, exhibiting excellent electrochemical performance.

• 出版日期2011-2-24
• 单位中南大学