Electrochemical Fabrication and Pseudocapacitive Performance of a Porous Nanostructured Nickel-Based Complex Film Electrode

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	Electrochemical Fabrication and Pseudocapacitive Performance of a Porous Nanostructured Nickel-Based Complex Film Electrode
	D. S. Kong; J. M. Wang; O. Y. Pi; H. B. Shao; J. Q. Zhang
	2011
发表期刊	Acta Physico-Chimica Sinica
ISSN	1000-6818
卷号	27 期号:4 页码:764-768
摘要	A porous nickel film was prepared by the selective anodic dissolution of copper from an electrodeposited Ni-Cu alloy film. A porous nanostructured nickel-based complex film electrode was further fabricated by oxidizing the obtained porous nickel film using cyclic voltammetry in 1 mol . L(-1) KOH solution. The physical properties and pseudocapacitive performance of the as-prepared film electrodes were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and electrochemical techniques. The results of SEM, XRD, and XPS indicate that the obtained complex film electrode consists of Ni, Ni(OH)(2), and NiOOH, and it has a porous nanostructure. The electrochemical experiments revealed that the as-prepared porous nanostructured nickel-based complex film electrode had a specific capacitance of 578 F . g(-1) at a current density of 20 A . g(-1) at the initial cycle and it gave a specific capacitance of 544 F . g(-1) after 1000 cycles with a capacitance retention of 94%. The nanoporous structure enhances the accessibility of the KOH electrolyte and promotes reactive species transport within the electrode. The nanoporous Ni substrate may improve the electronic conductivity of the thin Ni(OH)(2) film at its surfaces. The nanosized Ni(OH)(2) grains can shorten the proton diffusion pathways in the bulk of the solid nickel hydroxide. These factors are responsible for the superior pseudocapacitive performance of the porous nanostructured nickel-based complex film electrode.
部门归属	[kong de-shuai; wang jian-ming; pi ou-yang; shao hai-bo; zhang jian-qing] zhejiang univ, dept chem, hangzhou 310027, peoples r china. [zhang jian-qing] chinese acad sci, inst met res, state key lab corros & protect met, shenyang 110016, peoples r china.;wang, jm (reprint author), zhejiang univ, dept chem, hangzhou 310027, peoples r china;wjm@zju.edu.cn
关键词	Electrochemical Capacitor Nanoporous Structure Nickel Hydroxide Dealloying Specific Capacitance Electroplating Nanoporous Nickel Capacitors Oxide Hydroxide Temperature Deposition Nanoflakes Oxidation Behavior Storage
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WOS记录号	WOS:000288909800002
引用统计	被引频次：4[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/321006/30435
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	D. S. Kong,J. M. Wang,O. Y. Pi,et al. Electrochemical Fabrication and Pseudocapacitive Performance of a Porous Nanostructured Nickel-Based Complex Film Electrode[J]. Acta Physico-Chimica Sinica,2011,27(4):764-768.
APA	D. S. Kong,J. M. Wang,O. Y. Pi,H. B. Shao,&J. Q. Zhang.(2011).Electrochemical Fabrication and Pseudocapacitive Performance of a Porous Nanostructured Nickel-Based Complex Film Electrode.Acta Physico-Chimica Sinica,27(4),764-768.
MLA	D. S. Kong,et al."Electrochemical Fabrication and Pseudocapacitive Performance of a Porous Nanostructured Nickel-Based Complex Film Electrode".Acta Physico-Chimica Sinica 27.4(2011):764-768.