The electrochemical performance of a multi-wall carbon nanotube/activated carbon mixture as the electrode of electric double layer capacitors analyzed by electrochemical impedance
文献类型：期刊论文
| 作者 | X. Geng ; F. Li ; D. W. Wang ; H. M. Cheng |
| 刊名 | New Carbon Materials
 |
| 出版日期 | 2011 |
| 卷号 | 26期号:4页码:307-312 |
| 关键词 | Activated carbon Multi-walled carbon nanotubes Electrochemical impedance spectroscopy Relaxation time constant research-and-development supercapacitors coke |
| ISSN号 | 1007-8827 |
| 中文摘要 | Activated carbon was prepared from petroleum coke by chemical activation. Multi-walled carbon nanotubes (MWCNTs) were mixed with the activated carbon to form the electrode material of electric double layer capacitors. According to the relative values of impedance and capacitance in electrochemical impedance, the available capacitance and energy dissipation from resistance were evaluated. Results showed that the real part of the capacitance for this mixture was higher than for activated carbon alone when activated carbon was mixed with a mass fraction 3% -15% MWCNTs. With the increase of MWCNT content, the imaginary part of the capacitance and its percentage decreases while the real part of capacitance and its percentage increases. It was revealed that the efficiency of energy storage was improved, the relaxation time constant was decreased, the characteristic of capacitance response versus frequency was improved and the electrode resistance was decreased by the addition of MWCNTs to activated carbon. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/30347]  |
| 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 | X. Geng,F. Li,D. W. Wang,et al. The electrochemical performance of a multi-wall carbon nanotube/activated carbon mixture as the electrode of electric double layer capacitors analyzed by electrochemical impedance[J]. New Carbon Materials,2011,26(4):307-312. |
| APA | X. Geng,F. Li,D. W. Wang,&H. M. Cheng.(2011).The electrochemical performance of a multi-wall carbon nanotube/activated carbon mixture as the electrode of electric double layer capacitors analyzed by electrochemical impedance.New Carbon Materials,26(4),307-312. |
| MLA | X. Geng,et al."The electrochemical performance of a multi-wall carbon nanotube/activated carbon mixture as the electrode of electric double layer capacitors analyzed by electrochemical impedance".New Carbon Materials 26.4(2011):307-312. |
入库方式： OAI收割
来源：金属研究所
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