Abstract
Cyclic voltammetry was used to study the electroreduction of Ni~(2+)to Ni on Pt and Cu electrode in acetamide-urea-NaBr melt at 353K.It is irreversible in one step.At Pt and Cu eletrode the diffusion coefficient and electron transfer coefficient of Ni~(2+) in 0.063mol/dm~(3) NiCl_(2)-acetamide-urea-NaBr melt were determined.The transfer coefficient α=0.28 and diffusion coefficient D_(0)=4.63×10~(-5) cm~(2·)s~(-1)of the Pt eletrode and transfer coefficient α=0.22 and diffusion coefficient D_(0)=6.05×10~(-7) cm~(2·)s~(-1)of the Cu eletrode were measured.It was put emphasis on that Gd~(3+) is not reduced to Gd alone in copper matrix,but can be inductively codeposited with Ni~(2+).The amorphous Gd-Ni alloy films were obtained by potentiostatic electrolysis.The content of Gd in the Gd-Ni deposits changes with the cathode potential,molar ratio of Gd~(3+)/ Ni~(2+) and the electrolysis time.Under the condition of electrolyte potential-0.75V and molar ratio of Gd(Ⅲ)/Ni(Ⅱ)1:1,the alloy film obtained after electrolysis 20 min is amorphous state.
Keywords
Acetamide-urea-NaBr melt, Diffusion coefficient, Inductive codeposition, Gd-Ni alloy film
Publication Date
2006-05-28
Online Available Date
2006-05-28
Revised Date
2006-05-28
Received Date
2006-05-28
Recommended Citation
Bi-Qing CHEN, Jian-Chao WANG, Chen-Yu GUO, Jin-Gui WANG, Qing LIU.
Electrochemical Preparation of Gd-Ni Alloy Film in Acetamide-urea-NaBr Melt[J]. Journal of Electrochemistry,
2006
,
12(2): 227-231.
DOI: 10.61558/2993-074X.1728
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol12/iss2/20
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