MnO2-Carbon nanotube composite for high-areal-density supercapacitors with high rate performance
文献类型：期刊论文
| 作者 | Wang, K; Gao, S; Du, ZL; Yuan, AB; Lu, W(卢威); Chen, LW(陈立桅) |
| 刊名 | JOURNAL OF POWER SOURCES
 |
| 出版日期 | 2016 |
| 卷号 | 305 |
| 通讯作者 | Lu, W(卢威) ; Chen, LW(陈立桅) |
| 英文摘要 | Practical supercapacitor devices require high areal capacitance and area! power density, and thus demand high utilization of active material and good rate performance under high areal mass loading. However, ion transport in high-mass-loading electrodes can be a challenge, which leads to deteriorate specific capacitance and rate performance. In this paper, a well-dispersed porous MnO2-carbon nanotube (CNT) composite was prepared for use as a supercapacitor electrode material. The small MnO2 nano particles and porous CNT network facilitated fast electron/ion transfer kinetics in the electrode. With a mass loading as high as 6.4 mg cm(-2) on the electrode, the MnO2-CNT composite exhibited an excellent areal capacitance of 1.0 F cm(-2) at 0.2 A g(-1) (1.28 mA cm(-2)), with a retention of 77% even at a high current density of 20 A g(-1) (128 mA cm(-2)). The electrode exhibited a high power density of 45.2 kW kg(-1) (0.29 W cm(-2)) while maintaining a reasonable energy density of 16.7 Wh kg(-1) (106 mu Wh cm(-2)). No apparent fading was observed even after 3000 charge/discharge cycles at 1 A g(-1). This porous and evenly distributed MnO2-CNT composite has great potential for practical applications in supercapacitors. (C) 2015 Elsevier B.V. All rights reserved. |
| 关键词[WOS] | ELECTROCHEMICAL CAPACITORS ; MANGANESE-DIOXIDE ; CARBON NANOTUBES ; ASYMMETRIC SUPERCAPACITORS ; ELECTRODE MATERIAL ; HIGH-POWER ; MNO2 ; PSEUDOCAPACITORS ; BEHAVIOR ; FILMS |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000368868300005 |
| 源URL | [http://ir.sinano.ac.cn/handle/332007/4677]  |
| 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_陈立桅团队 |
| 推荐引用方式 GB/T 7714 | Wang, K,Gao, S,Du, ZL,et al. MnO2-Carbon nanotube composite for high-areal-density supercapacitors with high rate performance[J]. JOURNAL OF POWER SOURCES,2016,305. |
| APA | Wang, K,Gao, S,Du, ZL,Yuan, AB,Lu, W,&Chen, LW.(2016).MnO2-Carbon nanotube composite for high-areal-density supercapacitors with high rate performance.JOURNAL OF POWER SOURCES,305. |
| MLA | Wang, K,et al."MnO2-Carbon nanotube composite for high-areal-density supercapacitors with high rate performance".JOURNAL OF POWER SOURCES 305(2016). |
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