Layered -Co(OH)2 Nanocones as Electrode Materials for Pseudocapacitors: Understanding the Effect of Interlayer Space on Electrochemical Activity

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	Layered -Co(OH)2 Nanocones as Electrode Materials for Pseudocapacitors: Understanding the Effect of Interlayer Space on Electrochemical Activity
	Jin, J(靳健)
刊名	ADVANCED FUNCTIONAL MATERIALS
	2013-06-06
卷号	23 期号:21 页码:2758-2764
关键词	layered -Co(OH)2 interlayer effect electrochemical activity supercapacitors
通讯作者	Jin, J(靳健)
英文摘要	The effect of space accessible to electrolyte ions on the electrochemical activity is studied for a system of transition-metal hydroxide-based pseudocapacitors. Layered -Co(OH)2 with various intercalated anions is used as a model material. Three types of layered -Co(OH)2 with intercalated anions of dodecyl sulfate, benzoate, or nitrate, are prepared by a simple reflux and an anion-exchange process. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) observations and X-ray diffraction (XRD) data show the formation of layered -Co(OH)2 nanocones with interlayer spacing between adjacent Co(OH)2 single sheets of 1.6, 0.7, and 0.09 nm, corresponding to the anions as listed above. Electrochemical characterization reveals that interlayer space has a great effect on the electrochemical activity of -Co(OH)2 nanocones as an electrode material. For the interlayer spacing of 1.6 nm, in the case of dodecyl sulfate-intercalated -Co(OH)2, the Faradaic reaction takes place more adequately than for benzoate- and nitrate-intercalated -Co(OH)2. As a result, a higher specific capacitance and better cycling stability is obtained for the dodecyl sulfate-intercalated -Co(OH)2. The electrochemical activity obviously reduces when the interlayer space decreases to 0.7 nm. Our results suggest the importance of rational designing the interlayer space of layered transition metal hydroxides for high-performance pseudocapacitors.
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000319824200012
公开日期	2014-01-15
内容类型	期刊论文
源URL	[http://ir.sinano.ac.cn/handle/332007/1353]
专题	苏州纳米技术与纳米仿生研究所_纳米仿生研究部_靳健团队
通讯作者	Jin, J(靳健)
推荐引用方式 GB/T 7714	Jin, J. Layered -Co(OH)2 Nanocones as Electrode Materials for Pseudocapacitors: Understanding the Effect of Interlayer Space on Electrochemical Activity[J]. ADVANCED FUNCTIONAL MATERIALS,2013,23(21):2758-2764.
APA	Jin, J.(2013).Layered -Co(OH)2 Nanocones as Electrode Materials for Pseudocapacitors: Understanding the Effect of Interlayer Space on Electrochemical Activity.ADVANCED FUNCTIONAL MATERIALS,23(21),2758-2764.
MLA	Jin, J."Layered -Co(OH)2 Nanocones as Electrode Materials for Pseudocapacitors: Understanding the Effect of Interlayer Space on Electrochemical Activity".ADVANCED FUNCTIONAL MATERIALS 23.21(2013):2758-2764.