Three-dimensional metal/oxide nanocone arrays for high-performance electrochemical pseudocapacitors
文献类型：期刊论文
| 作者 | Li, WF (李宛飞)
|
| 刊名 | NANOSCALE
 |
| 出版日期 | 2014 |
| 卷号 | 6期号:7页码:3626-3631 |
| 关键词 | COMPOSITE BATTERIES POWER MNO2 |
| 通讯作者 | Zhang, YG (张跃钢) |
| 英文摘要 | Three-dimensional (3D) electrodes are critical for enabling high-performance power sources. We report here on the design and fabrication, by combining imprint and soft-printing technologies, of 3D nanocone arrays as a novel platform for high performance pseudocapacitors. Such purpose-built 3D nanocone arrays have the advantages of simplicity/versatility/reliability of fabrication, generality to a vast range of active materials, high electrode surface area, and ease of electrolyte permeation. As a demonstration of principle, Au and MnO2 were sequentially deposited forming a 3D Au/MnOx nanocone array electrode for a pseudocapacitor device. This device achieved a specific mass (areal) capacitance of 840.3 F g(-1) (88.2 mF cm(-2)) at a current density of 2 A g(-1). Additionally, the asymmetric supercapacitor using the Au/MnOx nanocone array as the positive electrode and a carbon-based material as the negative electrode achieved a capacitance of 108.5 F g(-1) at a current density of 1 A g(-1), corresponding to an energy density of as high as 46.8 W h kg(-1) at a power density of 0.72 kW kg(-1). The cell still preserved 96.5% of the initial capacitance even after 2000 cycles at a current density of 2 A g(-1). The initial result is at least on a par with those of the best asymmetric supercapacitors reported so far, and thus bolsters the development value of the conductive nanocone arrays for high-performance supercapacitors and other energy-storage devices. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000333042500027 |
| 公开日期 | 2014-12-19 |
| 源URL | [http://ir.sinano.ac.cn/handle/332007/1706]  |
| 专题 | 苏州纳米技术与纳米仿生研究所_纳米研究国际实验室_张跃钢团队 |
| 推荐引用方式 GB/T 7714 | Li, WF . Three-dimensional metal/oxide nanocone arrays for high-performance electrochemical pseudocapacitors[J]. NANOSCALE,2014,6(7):3626-3631. |
| APA | Li, WF .(2014).Three-dimensional metal/oxide nanocone arrays for high-performance electrochemical pseudocapacitors.NANOSCALE,6(7),3626-3631. |
| MLA | Li, WF ."Three-dimensional metal/oxide nanocone arrays for high-performance electrochemical pseudocapacitors".NANOSCALE 6.7(2014):3626-3631. |
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