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Superhigh capacity and rate capability of high-level nitrogen-doped graphene sheets as anode materials for lithium-ion batteries
| Content Provider | Semantic Scholar |
|---|---|
| Author | Cai, Dandan Wang, Suqing Lian, Peichao Zhu, Xuefeng Li, Dongdong Yang, Weishen Wang, Haihui |
| Copyright Year | 2013 |
| Abstract | Abstract A new facile approach is proposed to synthesize nitrogen-doped graphene sheets with the nitrogen-doping level as high as 7.04 at.% by thermal annealing pristine graphene sheets and low-cost industrial material melamine. The high-level nitrogen-doped graphene sheets exhibit a superhigh initial reversible capacity of 1123 mAh g −1 at a current density of 50 mA g −1 . More significantly, even at an extremely high current density of 20 A g −1 , highly stable capacity of about 241 mAh g −1 could still be obtained. Such an electrochemical performance is superior to those previously reported nitrogen-doped graphene sheets. The excellent electrochemical performance can be attributed to the two-dimensional structure, disordered surface morphology, high nitrogen-doping level, and the existence of pyridinic nitrogen atoms. The results indicate that the high-level nitrogen-doped graphene sheets could be a promising anode material for high-performance lithium-ion batteries. |
| Starting Page | 492 |
| Ending Page | 497 |
| Page Count | 6 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/j.electacta.2012.11.105 |
| Volume Number | 90 |
| Alternate Webpage(s) | http://www.scut.hhwang.ycym.com/Uploads/201703/58ca90df3d726.pdf |
| Alternate Webpage(s) | https://doi.org/10.1016/j.electacta.2012.11.105 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
