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Doped Graphene Sheets As Anode Materials with Superhigh Rate and Large Capacity for Lithium Ion Batteries
文献类型：期刊论文
| 作者 | Z. S. Wu ; W. C. Ren ; L. Xu ; F. Li ; H. M. Cheng |
| 刊名 | Acs Nano
 |
| 出版日期 | 2011 |
| 卷号 | 5期号:7页码:5463-5471 |
| 关键词 | doped graphene anode lithium ion batteries high rate nitrogen boron high-rate capability electrochemical capacitors carbon nanotubes li storage electrodes energy performance nanosheets diffusion films |
| ISSN号 | 1936-0851 |
| 中文摘要 | One great challenge in the development of lithium ion batteries is to simultaneously achieve high power and large energy capacity at fast charge and discharge rates for several minutes to seconds. Here we show that nitrogen- or boron-doped graphene can be used as a promising anode for high-power and high-energy lithium ion batteries under high-rate charge and discharge conditions. The doped graphene shows a high reversible capacity of >1040 mAh g(-1) at a low rate of 50 mA g(-1). More importantly, it can be quickly charged and discharged in a very short time of 1 h to several tens of seconds together with high-rate capability and excellent long-term cyclability. For example, a very high capacity of similar to 199 and 235 mAh g(-1) was obtained for the N-doped graphene and B-doped graphene at 25 A g(-1) (about 30 s to full charge). We believe that the unique two-dimensional structure, disordered surface morphology, heteroatomic defects, better electrode/electrolyte wettability, increased intersheet distance, improved electrical conductivity, and thermal stability of the doped graphene are beneficial to rapid surface Li(+) absorption and ultrafast Li(+) diffusion and electron transport, and thus make the doped materials superior to those of pristine chemically derived graphene and other carbonaceous materials. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/30778]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Z. S. Wu,W. C. Ren,L. Xu,et al. Doped Graphene Sheets As Anode Materials with Superhigh Rate and Large Capacity for Lithium Ion Batteries[J]. Acs Nano,2011,5(7):5463-5471. |
| APA | Z. S. Wu,W. C. Ren,L. Xu,F. Li,&H. M. Cheng.(2011).Doped Graphene Sheets As Anode Materials with Superhigh Rate and Large Capacity for Lithium Ion Batteries.Acs Nano,5(7),5463-5471. |
| MLA | Z. S. Wu,et al."Doped Graphene Sheets As Anode Materials with Superhigh Rate and Large Capacity for Lithium Ion Batteries".Acs Nano 5.7(2011):5463-5471. |
入库方式： OAI收割
来源：金属研究所
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