1. A novel method to synthesize anatase TiO2 nanowires as an anode material for lithium-ion batteries
- Author
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Wu, Feixiang, Li, Xinhai, Wang, Zhixing, Guo, Huajun, Wu, Ling, Xiong, Xunhui, and Wang, Xiaojuan
- Subjects
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TITANIUM dioxide , *INORGANIC synthesis , *LITHIUM-ion batteries , *NANOWIRES , *ELECTROCHEMISTRY , *EXTRACTION (Chemistry) , *X-ray diffraction , *SOLUTION (Chemistry) , *THERMAL analysis - Abstract
Abstract: 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 1.88V in the process of Li insertion and extraction, and the initial Li insertion/extraction capacities are 283 and 236mAhg−1 at the density of 20mAg−1, respectively. In the 20th cycle, the reversible capacities still remain about 216 and 159mAhg−1 at the current densities of 20 and 200mAg−1, respectively, and the coulombic efficiency is more than 98%, exhibiting excellent electrochemical performance. [Copyright &y& Elsevier]
- Published
- 2011
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