Effect of glassy carbon, gold, and nickel electrodes on nickel electrocrystallization in an industrial electrolyte

doi:10.1016/j.surfcoat.2019.04.072

CORC > 兰州理工大学 > 兰州理工大学

	Effect of glassy carbon, gold, and nickel electrodes on nickel electrocrystallization in an industrial electrolyte
	Xu, Yangtao ; Huang, Kai 1; Zhu, Zhenxu ; Xia, Tiandong
刊名	SURFACE & COATINGS TECHNOLOGY
	2019-07-25
卷号	370 页码:1-10
关键词	Nickel electrocrystallization Industrial electrolyte Glassy carbon electrode Gold electrode Nickel electrode
ISSN号	0257-8972
DOI	10.1016/j.surfcoat.2019.04.072
英文摘要	The effects of three different substrate materials (glassy carbon, gold, and nickel electrodes) on the electrocrystallization behavior of nanocrystalline nickel in an industrial electrolyte with complex compositions were studied by cyclic voltammetry (CV), single potential step chronoamperometry. The CV results indicated that the initial deposition potentials of nickel shift to the positive direction in the order glassy carbon < gold < nickel electrodes, while the nickel deposition overpotential decreased at the same time. Chronoarnperometry results indicated that from the glassy carbon to gold and nickel electrodes, the adhesion of nickel nanoparticles on the electrodes increased, nucleation relaxation time became shorter, and the number of nuclei decreased. As the deposition potential is negatively shifted and the deposition time is prolonged, the I-t curves for the nickel and gold electrodes are more stable and reliable than those from the glassy carbon electrodes. The chronoamperometric study combined with SEM revealed that the nucleation mechanism of nickel on different substrates changed from three-dimensional progressive to instantaneous, but the time of the transition is different. When the deposition time is 100 s, the nanocrystalline nickel deposited on the nickel and gold electrodes has good integrity and uniformity. This was also confirmed in studies using atomic force microscopy and transmission electron microscopy. Moreover, the results of transmission electron microscopy (TEM) show that there are many twins in the nanocrystalline nickel layer deposited on the gold electrode at -0.95 V, 100 s. The electrocrystallization process of nickel is complicated by the complex ionic components in the industrial electrolyte of the nickel sulfide soluble anode/mixed acid system.
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000471083100001
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/31710]
专题	兰州理工大学材料科学与工程学院
通讯作者	Huang, Kai
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonerrous Meta, Lanzhou 730050, Gansu, Peoples R China 2.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Xu, Yangtao,Huang, Kai,Zhu, Zhenxu,et al. Effect of glassy carbon, gold, and nickel electrodes on nickel electrocrystallization in an industrial electrolyte[J]. SURFACE & COATINGS TECHNOLOGY,2019,370:1-10.
APA	Xu, Yangtao,Huang, Kai,Zhu, Zhenxu,&Xia, Tiandong.(2019).Effect of glassy carbon, gold, and nickel electrodes on nickel electrocrystallization in an industrial electrolyte.SURFACE & COATINGS TECHNOLOGY,370,1-10.
MLA	Xu, Yangtao,et al."Effect of glassy carbon, gold, and nickel electrodes on nickel electrocrystallization in an industrial electrolyte".SURFACE & COATINGS TECHNOLOGY 370(2019):1-10.