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
	2008
发表期刊	Applied Physics Letters
ISSN	0003-6951
卷号	92 期号:14
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.
部门归属	[liu, c. g.; liu, m.; li, f.; cheng, h. m.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [liu, c. g.] dalian univ technol, sch mat sci & engn, dalian 116024, peoples r china. [liu, c. g.] dalian univ technol, state key lab mat modificat laser ion & elect bea, dalian 116024, peoples r china.;cheng, hm (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china;cheng@imr.ac.cn
关键词	Double-layer Capacitance Electrochemical Capacitors Surface-chemistry Activated Carbon Composite Fiber
URL	查看原文
WOS记录号	WOS:000254940500077
引用统计	被引频次：114[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32932
专题	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).