Preparation and electrocatalytic performance of nanoporous Ni-Fe alloy by dealloying

doi:10.11868/j.issn.1001-4381.2017.000945

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	Preparation and electrocatalytic performance of nanoporous Ni-Fe alloy by dealloying
	Zhou, Qi; Wang, Ya-Fei; Feng, Ji-Wei; Li, Zhi-Yang
刊名	Cailiao Gongcheng/Journal of Materials Engineering
	2019-04-20
卷号	47 期号:4 页码:77-83
关键词	Binary alloys Dealloying Electrochemical impedance spectroscopy Lamellar structures Metal melting Nickel alloys Electrocatalytic activity Electrocatalytic performance Electrochemical stabilities Hydrogen evolution Hydrogen evolution reactions Linear sweep voltammetry Nano-porous Vacuum melting
ISSN号	10014381
DOI	10.11868/j.issn.1001-4381.2017.000945
英文摘要	The precursor alloy with atomic fraction is Ni30-xFexMn70(x=0, 10, 20) by means of vacuum melting and solid solution, using the method of dealloying to nanoporous Ni and Ni-Fe alloy, with XRD, SEM phase compositions and microstructure were analyzed. The electrocatalytic performance for hydrogen evolution reaction was investigated by linear sweep voltammetry(LSV), electrochemical impedance spectroscopy(IMP),square wave potential technique(SWPT) and chrono potentiometry(CP).The results show that the nanoporous Ni-Fe alloy with lamellar structure is obtained by adding Fe, which improves the surface area of nanoporous Ni, and synergistic effect between Fe and Ni is produced, which can effectively improve the electrocatalytic activity of hydrogen evolution of the alloy. When the atom fraction of Fe is 10%, the surface area of nanoporous Ni-Fe alloy obtained by dealloying is the largest, and the electrocatalytic performance of hydrogen evolution is the best. Under the current density of 0.1A/cm2, hydrogen evolution overpotential is only 56mV,after continuous electrolysis for 10h,the alloy exhibits the high electrocatalytic activity and good electrochemical stability. © 2019, Journal of Materials Engineering. All right reserved.
语种	中文
出版者	Beijing Institute of Aeronautical Materials (BIAM)
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/113925]
专题	外国语学院
作者单位	State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Zhou, Qi,Wang, Ya-Fei,Feng, Ji-Wei,et al. Preparation and electrocatalytic performance of nanoporous Ni-Fe alloy by dealloying[J]. Cailiao Gongcheng/Journal of Materials Engineering,2019,47(4):77-83.
APA	Zhou, Qi,Wang, Ya-Fei,Feng, Ji-Wei,&Li, Zhi-Yang.(2019).Preparation and electrocatalytic performance of nanoporous Ni-Fe alloy by dealloying.Cailiao Gongcheng/Journal of Materials Engineering,47(4),77-83.
MLA	Zhou, Qi,et al."Preparation and electrocatalytic performance of nanoporous Ni-Fe alloy by dealloying".Cailiao Gongcheng/Journal of Materials Engineering 47.4(2019):77-83.