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High rate capability of TiO2/nitrogen-doped graphene nanocomposite as an anode material for lithium-ion batteries
| Content Provider | Semantic Scholar |
|---|---|
| Author | Cai, Dandan Li, Dongdong Wang, Suqing Zhu, Xuefeng Yang, Weisheng Zhang, Shanqing Wang, Haihui |
| Copyright Year | 2013 |
| Abstract | TiO2/nitrogen-doped graphene nanocomposite was synthesized by a facile gas/liquid interface reaction. The structure and morphology of the sample were analyzed by X-ray diffraction analysis, X-ray photoelectron spectroscopy, scanning electron microscopy and transmission electron microscopy. The results indicate that nitrogen atoms were successfully doped into graphene sheets. The TiO2 nanoparticles (8-13 nm in size) were homogenously anchored on the nitrogen-doped graphene sheets through gas/liquid interface reaction. The as-prepared TiO2/nitrogen-doped graphene nanocomposite shows a better electrochemical performance than the TiO2/graphene nanocomposite and the bare TiO2 nanoparticles. TiO2/nitrogen-doped graphene nanocomposite exhibits excellent cycling stability and shows high capacity of 136 mAh g(-1) (at a current density of 1000 mA g(-1)) after 80 cycles. More importantly, a high reversible capacity of 109 mAh g(-1) can still be obtained even at a super high current density of 5000 mA g(-1). The superior electrochemical performance is attributed to the good electronic conductivity introduced by the nitrogen-doped graphene sheets and the positive synergistic effect between nitrogen-doped graphene sheets and TiO2 nanoparticles. (C) 2013 Elsevier B. V. All rights reserved. |
| Starting Page | 54 |
| Ending Page | 58 |
| Page Count | 5 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/j.jallcom.2013.01.068 |
| Volume Number | 561 |
| Alternate Webpage(s) | http://www.scut.hhwang.ycym.com/Uploads/201703/58ca8f01821c8.pdf |
| Alternate Webpage(s) | https://doi.org/10.1016/j.jallcom.2013.01.068 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
