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Anchoring Hydrous RuO(2) on Graphene Sheets for High-Performance Electrochemical Capacitors
文献类型：期刊论文
| 作者 | Z. S. Wu ; D. W. Wang ; W. Ren ; J. Zhao ; G. Zhou ; F. Li ; H. M. Cheng |
| 刊名 | Advanced Functional Materials
 |
| 出版日期 | 2010 |
| 卷号 | 20期号:20页码:3595-3602 |
| 关键词 | walled carbon nanotube ruthenium oxide energy-storage graphite oxide supercapacitor application electrode materials mesoporous carbon nanoparticles ultracapacitors polyaniline |
| ISSN号 | 1616-301X |
| 中文摘要 | Hydrous ruthenium oxide (RuO(2))/graphene sheet composites (ROGSCs) with different loadings of Ru are prepared by combining sol-gel and low-temperature annealing processes. The graphene sheets (GSs) are well-separated by fine RuO(2) particles (5-20 nm) and, simultaneously, the RuO(2) particles are anchored by the richly oxygen-containing functional groups of reduced, chemically exfoliated GSs onto their surface. Benefits from the combined advantages of GSs and RuO(2) in such a unique structure are that the ROGSC-based supercapacitors exhibit high specific capacitance (similar to 570 F g(-1) for 38.3 wt% Ru loading), enhanced rate capability, excellent electrochemical stability (similar to 97.9% retention after 1000 cycles), and high energy density (20.1 Wh kg(-1)) at low operation rate (100 mA g(-1)) or high power density (10000 W kg(-1)) at a reasonable energy density (4.3 Wh kg(-1)). Interestingly, the total specific capacitance of ROGSCs is higher than the sum of specific capacitances of pure GSs and pure RuO(2) in their relative ratios, which is indicative of a positive synergistic effect of GSs and RuO(2) on the improvement of electrochemical performance. These findings demonstrate the importance and great potential of graphene-based composites in the development of high-performance energy-storage systems. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/31592]  |
| 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,D. W. Wang,W. Ren,et al. Anchoring Hydrous RuO(2) on Graphene Sheets for High-Performance Electrochemical Capacitors[J]. Advanced Functional Materials,2010,20(20):3595-3602. |
| APA | Z. S. Wu.,D. W. Wang.,W. Ren.,J. Zhao.,G. Zhou.,...&H. M. Cheng.(2010).Anchoring Hydrous RuO(2) on Graphene Sheets for High-Performance Electrochemical Capacitors.Advanced Functional Materials,20(20),3595-3602. |
| MLA | Z. S. Wu,et al."Anchoring Hydrous RuO(2) on Graphene Sheets for High-Performance Electrochemical Capacitors".Advanced Functional Materials 20.20(2010):3595-3602. |
入库方式： OAI收割
来源：金属研究所
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