Anomalous electrochemical behavior of multiwalled carbon nanotubes for lithium insertion/extraction
文献类型：期刊论文
| 作者 | Wang, Q ; Liu, LJ ; Chen, LQ ; Huang, XJ |
| 刊名 | JOURNAL OF THE ELECTROCHEMICAL SOCIETY
 |
| 出版日期 | 2004 |
| 卷号 | 151期号:9页码:A1333 |
| 关键词 | INSERTION ION INTERCALATION ELECTRODES BATTERIES NANOBELLS |
| ISSN号 | 0013-4651 |
| 通讯作者 | Wang, Q: Ecole Polytech Fed Lausanne, Lab Photon & Interfaces, CH-1015 Lausanne, Switzerland. |
| 中文摘要 | The anomalous electrochemical behavior of multiwalled carbon nanotubes (MWNTs) during lithium insertion/extraction have been studied. From the voltage profiles of a MWNTs/ Lithium cell we found that the potential with a large charging rate is lower than that with a small charging rate. Potential relaxation experiments indicate that the shift of standard electrode potential ( Eo) at different charging rates is responsible for the anomalous behavior. In addition, the results from electrochemical impedance spectroscopy suggest that there are two kinds of diffusion mechanism within the bulk electrode. After discharge, some lithium ions continue to move slowly from one particular site, which the lithium ions occupy upon discharge, to another site with lower energy. Because the diffusion is very slow, there is much more time for lithium ions to move to deeper potential wells at small current density than that at large current density. Consequently, a higher potential would be needed to extract these ions than in the case where charging is done at a higher rate. (C) 2004 The Electrochemical Society. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/33839]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Wang, Q,Liu, LJ,Chen, LQ,et al. Anomalous electrochemical behavior of multiwalled carbon nanotubes for lithium insertion/extraction[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY,2004,151(9):A1333. |
| APA | Wang, Q,Liu, LJ,Chen, LQ,&Huang, XJ.(2004).Anomalous electrochemical behavior of multiwalled carbon nanotubes for lithium insertion/extraction.JOURNAL OF THE ELECTROCHEMICAL SOCIETY,151(9),A1333. |
| MLA | Wang, Q,et al."Anomalous electrochemical behavior of multiwalled carbon nanotubes for lithium insertion/extraction".JOURNAL OF THE ELECTROCHEMICAL SOCIETY 151.9(2004):A1333. |
入库方式： OAI收割
来源：物理研究所
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