| Facile preparation and electrochemical characterization of cobalt oxide/multi-walled carbon nanotube composites for supercapacitors | |
| Department | 固体润滑国家重点实验室 |
Lang JW(郎俊伟); Yan XB(阎兴斌) ; Xue QJ(薛群基)
| |
| 2011 | |
| Source Publication | Journal of Power Sources
 |
| ISSN | 0378-7753 |
| Volume | 196Pages:7841-7846 |
| Abstract | A series of cobalt oxide/multi-walled carbon nanotube (Co3O4/MWCNT) composites are successfully syn- thesized by a facile chemical co-precipitation method followed by a simple thermal treatment process. The morphology and structure of as-obtained composites are characterized by X-ray diffraction, scanning electron microscopy, and N2-adsorption/desorption measurements, and the electrochemical proper- ties are investigated by cyclic voltammetry (CV), galvanostatic charge/discharge and electrochemical impedance spectroscopy (EIS). For all Co3O4/MWCNT composites, MWCNTs are well dispersed in the loosely packed Co3O4 nanoparticles. Among them, the Co3O4-5%MWCNT composite exhibits the highest specific surface area of 137 m2 g−1 and a mesoporous structure with a narrow distribution of pore size from 2 to 10 nm. Because of the synergistic effects coming from Co3O4 nanoparticles and MWCNTs, the electrochemical performances of pure Co3O4 material are significantly improved after adding MWCNTs. The Co3O4-5%MWCNT composite shows the largest specific capacitance of 418 F g−1 at a current density of 0.625 A g−1 in 2 M KOH electrolyte. Furthermore, this composite exhibits good cycling stability and life- time. Therefore, based on the above investigation, such Co3O4/MWCNT composite could be a potential candidate for supercapacitors. |
| Keyword | Carbon Nanotube Cobalt Oxide Composite Supercapacitor |
| Subject Area | 材料科学与物理化学 |
| Funding Organization | the Top Hundred Talents Program of Chinese Academy of Sciences;the National Basic Research 973 Program of China;the National Nature Science Foundations of China (51005225);the Postdoctoral Science Foundation of China (20100480728) |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 低维材料摩擦学组 |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/3251 |
| Collection | 固体润滑国家重点实验室（LSL） |
| Corresponding Author | Yan XB(阎兴斌) |
| Recommended Citation GB/T 7714 | Lang JW,Yan XB,Xue QJ. Facile preparation and electrochemical characterization of cobalt oxide/multi-walled carbon nanotube composites for supercapacitors[J]. Journal of Power Sources,2011,196:7841-7846. |
| APA | 郎俊伟,阎兴斌,&薛群基.(2011).Facile preparation and electrochemical characterization of cobalt oxide/multi-walled carbon nanotube composites for supercapacitors.Journal of Power Sources,196,7841-7846. |
| MLA | 郎俊伟,et al."Facile preparation and electrochemical characterization of cobalt oxide/multi-walled carbon nanotube composites for supercapacitors".Journal of Power Sources 196(2011):7841-7846. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 20117841-7846.PDF（1455KB） | 开放获取 | License | View Application Full Text | |||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment