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Graphene-Patched CNT/MnO2 Nanocomposite Papers for the Electrode of High-Performance Flexible Asymmetric Supercapacitors
文献类型：期刊论文
| 作者 | Li, QW(李清文) ; Chen, HY(陈宏源); Chen, MH(陈名海)
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| 刊名 | ACS APPLIED MATERIALS & INTERFACES
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| 出版日期 | 2013-04-24 |
| 卷号 | 5期号:8页码:3408-3416 |
| 关键词 | carbon nanotube MnO2 graphene buckypaper supercapacitor |
| 通讯作者 | Chen, MH(陈名海) |
| 英文摘要 | MnO2 has been widely studied as the pseudocapactive electrode material of high-performance super. capacitors for its large operating voltage, low cost, and environmental friendliness. However, it suffers from low conductivity and being hardly handle as the electrodes of supercapacitors especially with flexibility, which largely limit its electrochemical performance and application. Herein, we report a novel ternary composite paper composed of reduced graphene sheet (GR)-patched carbon nanotube (CNT)/MnO2, which has controllable structures and prominent electrochemical properties for a flexible electrode of the supercapacitor. The composite paper was prepared by electrochemical deposition of MnO2 on a flexible CNT paper and further adsorption of GR on its surface to enhance the surface conductivity of the electrode and prohibit MnO2 nanospheres from detaching with the electrode. The presence of GR was found remarkably effective in enhancing the initial electrochemical capacitance of the composite paper from 280 F/g to 486.6 F/g. Furthermore, it ensures the stability of the capacitance after a long period of charge/discharge cycles. A flexible CNT/polyaniline/CNT/MnO2/GR asymmetric supercapacitor was assembled with this composite paper as an electrode and aqueous electrolyte gel as the separator. Its operating voltage reached 1.6 V, with an energy density at 24.8 Wh/kg. Such a composite structure derived from a multiscale assembly can offer not only a robust scaffold loading MnO2 nanospheres but also a conductive network for efficient ionic and electronic transport; thus, it is potentially promising as a novel electrode architecture for high-performance flexible energy storage devices. |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000318205000078 |
| 公开日期 | 2014-01-13 |
| 源URL | [http://ir.sinano.ac.cn/handle/332007/1291]  |
| 专题 | 苏州纳米技术与纳米仿生研究所_先进材料研究部_李清文团队 |
| 通讯作者 | Chen, MH(陈名海) |
| 推荐引用方式 GB/T 7714 | Li, QW,Chen, HY,Chen, MH. Graphene-Patched CNT/MnO2 Nanocomposite Papers for the Electrode of High-Performance Flexible Asymmetric Supercapacitors[J]. ACS APPLIED MATERIALS & INTERFACES,2013,5(8):3408-3416. |
| APA | Li, QW,Chen, HY,&Chen, MH.(2013).Graphene-Patched CNT/MnO2 Nanocomposite Papers for the Electrode of High-Performance Flexible Asymmetric Supercapacitors.ACS APPLIED MATERIALS & INTERFACES,5(8),3408-3416. |
| MLA | Li, QW,et al."Graphene-Patched CNT/MnO2 Nanocomposite Papers for the Electrode of High-Performance Flexible Asymmetric Supercapacitors".ACS APPLIED MATERIALS & INTERFACES 5.8(2013):3408-3416. |
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