@article{Nie_Liu_Liu_Xie_Zhang_Xia_Yan_Yuan_Wang_2018, title={Nitrogen-Doped TiO2–C Composite Nanofibers with High-Capacity and Long-Cycle Life as Anode Materials for Sodium-Ion Batteries}, volume={10}, url={https://www.nmlett.org/index.php/nml/article/view/247}, DOI={10.1007/s40820-018-0225-1}, abstractNote={<p>Nitrogen-doped TiO<sub>2</sub>–C composite nanofibers (TiO<sub>2</sub>/N–C NFs) were manufactured by a convenient and green electrospinning technique in which urea acted as both the nitrogen source and a pore-forming agent. The TiO<sub>2</sub>/N–C NFs exhibit a large specific surface area (213.04&nbsp;m<sup>2</sup>&nbsp;g<sup>−1</sup>) and a suitable nitrogen content (5.37&nbsp;wt%). The large specific surface area can increase the contribution of the extrinsic pseudocapacitance, which greatly enhances the rate capability. Further, the diffusion coefficient of sodium ions (<em>D</em><sub>Na+</sub>) could be greatly improved by the incorporation of nitrogen atoms. Thus, the TiO<sub>2</sub>/N–C NFs display excellent electrochemical properties in Na-ion batteries. A TiO<sub>2</sub>/N–C NF anode delivers a high reversible discharge capacity of 265.8&nbsp;mAh&nbsp;g<sup>−1</sup> at 0.05&nbsp;A&nbsp;g<sup>−1</sup> and an outstanding long cycling performance even at a high current density (118.1&nbsp;mAh&nbsp;g<sup>−1</sup>) with almost no capacity decay at 5&nbsp;A&nbsp;g<sup>−1</sup> over 2000 cycles. Therefore, this work sheds light on the application of TiO<sub>2</sub>-based materials in sodium-ion batteries.</p> <p>Highlights:</p> <p>1 Nitrogen-doped TiO<sub>2</sub>–C composite nanofibers (TiO<sub>2</sub>/N–C NFs) are fabricated using green, inexpensive urea as a nitrogen source and pore-forming agent.<br>2 X-ray photoelectron spectroscopy results reveal changes in the content of different nitrogen species in detail.<br>3 The TiO<sub>2</sub>/N–C NFs anode exhibits excellent sodium storage performance.</p>}, number={4}, journal={Nano-Micro Letters}, author={Nie, Su and Liu, Li and Liu, Junfang and Xie, Jianjun and Zhang, Yue and Xia, Jing and Yan, Hanxiao and Yuan, Yiting and Wang, Xianyou}, year={2018}, month={Oct.}, pages={71} }