Electrochemical Preparation of Gd-Ni Alloy Film in Acetamide-urea-NaBr Melt

Authors

Bi-Qing CHEN, Department of Chemistry,Qinghai Normal University,Xining 810008,Qinghai,China;
Jian-Chao WANG, Department of Chemistry,Qinghai Normal University,Xining 810008,Qinghai,China;
Chen-Yu GUO, Department of Chemistry,Qinghai Normal University,Xining 810008,Qinghai,China;
Jin-Gui WANG, Department of Chemistry,Qinghai Normal University,Xining 810008,Qinghai,China;
Qing LIU, Department of Chemistry,Qinghai Normal University,Xining 810008,Qinghai,China;

Corresponding Author

Jian-Chao WANG(wangjc@qhnu.edu.cn)

Abstract

Cyclic voltammetry was used to study the electroreduction of Ni²⁺ 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 Ni²⁺ in 0.063mol/dm³) NiCl₂-acetamide-urea-NaBr melt were determined.The transfer coefficient α=0.28 and diffusion coefficient D_(0)=4.63×10^-5 cm²·s^-1 of the Pt eletrode and transfer coefficient α=0.22 and diffusion coefficient D_(0)=6.05×10^-7 cm²·s^-1 of the Cu eletrode were measured.It was put emphasis on that Gd³⁺ is not reduced to Gd alone in copper matrix,but can be inductively codeposited with Ni²⁺.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 Gd³⁺/ Ni²⁺ 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

DOI Link

https://doi.org/10.61558/2993-074X.1728

Publication Date

2006-05-28

Online Available Date

2006-05-28

Revised Date

2006-01-05

Received Date

2005-11-26

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