Frequency response characteristic of single-walled carbon nanotubes as supercapacitor electrode material

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	Frequency response characteristic of single-walled carbon nanotubes as supercapacitor electrode material
	C. G. Liu ; M. Liu ; F. Li ; H. M. Cheng
刊名	Applied Physics Letters
	2008
卷号	92 期号:14
关键词	double-layer capacitance electrochemical capacitors surface-chemistry activated carbon composite fiber
ISSN号	0003-6951
中文摘要	Impedance analysis was employed to study the frequency response characteristics of supercapacitors utilizing single-walled carbon nanotubes (SWNTs) as electrode material. The knee frequency is around 631 Hz for the electrochemically oxidized SWNT supercapacitor, much higher than that of the as-prepared one (around 316 Hz) and the common activated carbon supercapacitor (< 1 Hz). The good frequency response observed in this work is due to the introduction of nanosized mesopores and oxygen-containing groups formed during the electrochemical oxidization of SWNTs. The capacitance of electrochemically oxidized SWNT supercapacitor is 113 F/g, which is much higher than the value of the as-prepared one (20 F/g). (C) 2008 American Institute of Physics.
原文出处	://WOS:000254940500077
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/32932]
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	C. G. Liu,M. Liu,F. Li,et al. Frequency response characteristic of single-walled carbon nanotubes as supercapacitor electrode material[J]. Applied Physics Letters,2008,92(14).
APA	C. G. Liu,M. Liu,F. Li,&H. M. Cheng.(2008).Frequency response characteristic of single-walled carbon nanotubes as supercapacitor electrode material.Applied Physics Letters,92(14).
MLA	C. G. Liu,et al."Frequency response characteristic of single-walled carbon nanotubes as supercapacitor electrode material".Applied Physics Letters 92.14(2008).