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Self-Supported Nanotube Arrays of Sulfur-Doped TiO2 Enabling Ultrastable and Robust Sodium Storage
Jiangfeng Ni1, Shidong Fu1, Chao Wu2
1College of Physics, Optoelectronics and Energy, Soochow University, Suzhou, 215006, P. R. China.
Advanced Materials (Deerfield Beach, Fla.)
|January 21, 2016
Abstract:
Self-supported nanotube arrays of sulfur-doped TiO2 on metal substrates are fabricated using electrochemical anodization and subsequent sulfidation. The nanotube arrays can serve as an efficient anode for sodium storage, enabling ultrastable cycling (retaining 91% of the 2nd capacity up to 4400 cycles) and robust rate capability (167 mA h g(-1) at 3350 mA g(-1)), remarkably outperforming any other reported TiO2 -based electrodes.
