Fabrication of three-dimensional nanoporous nickel films with tunable nanoporosity and their excellent electrocatalytic activities for hydrogen evolution reaction

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	Fabrication of three-dimensional nanoporous nickel films with tunable nanoporosity and their excellent electrocatalytic activities for hydrogen evolution reaction
	J. Cai; L. Xu; J. M. Wang; L. Y. Zhang; H. Zhou; Y. Zhong; D. Chen; H. Q. Fan; H. B. Shao; J. Q. Zhang; C. N. Cao
	2013
发表期刊	International Journal of Hydrogen Energy
ISSN	0360-3199
卷号	38 期号:2 页码:934-941
摘要	Three-dimensional (3D) nanoporous nickel films were fabricated by a novel and facile method. The fabrication process involved the heat treatment of the electrodeposited zinc layer on nickel substrate and the subsequent electrochemical dealloying. The mutual diffusion of Ni and Zn during the heat treatment resulted in the formation of the Ni2Zn11 alloy surface film. The 3D nanoporous nickel films with open pores and interconnected ligaments were obtained by the electrochemical dealloying of relatively active zinc from the alloy surface film. As the electrodeposited zinc amount increased, the thickness, pore diameter and pore density of the nanoporous nickel films became larger. In our experimental range, the thickest nanoporous nickel film presented a thickness of 8 mu m and an average pore diameter of 700 nm. The as-prepared 3D nanoporous nickel films exhibited much higher electrocatalytic activity for hydrogen evolution reaction (HER) than smooth nickel foil, and their electrocatalytic activities for HER enhanced with increase in the porosity and thickness. It was concluded that the enhanced electrocatalytic activity and excellent electrochemical stability for HER of the as-prepared 3D nanoporous nickel films can be ascribed to their unique nanostructured characteristics. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
部门归属	[cai, jing ; xu, ling ; wang, jianming ; zhang, liying ; zhou, huan ; zhong, yuan ; chen, dan ; fan, huiqing ; shao, haibo ; zhang, jianqing ; cao, chu-nan] zhejiang univ, dept chem, hangzhou 310027, zhejiang, peoples r china. [zhang, jianqing ; cao, chu-nan] 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, zheda rd 38, hangzhou 310027, zhejiang, peoples r china. ; wjm@zju.edu.cn
关键词	Nanoporous Nickel Film Three-dimensional Nanostructure Electrochemical Dealloying Hydrogen Evolution Reaction Zn-ni Alloy Film Water Electrolysis Alkaline-solution Electrochemical Properties Ni Cathodes Zinc Electrodes Alloy Coatings Performance
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71146
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. Cai,L. Xu,J. M. Wang,et al. Fabrication of three-dimensional nanoporous nickel films with tunable nanoporosity and their excellent electrocatalytic activities for hydrogen evolution reaction[J]. International Journal of Hydrogen Energy,2013,38(2):934-941.
APA	J. Cai.,L. Xu.,J. M. Wang.,L. Y. Zhang.,H. Zhou.,...&C. N. Cao.(2013).Fabrication of three-dimensional nanoporous nickel films with tunable nanoporosity and their excellent electrocatalytic activities for hydrogen evolution reaction.International Journal of Hydrogen Energy,38(2),934-941.
MLA	J. Cai,et al."Fabrication of three-dimensional nanoporous nickel films with tunable nanoporosity and their excellent electrocatalytic activities for hydrogen evolution reaction".International Journal of Hydrogen Energy 38.2(2013):934-941.