镍(II)-铼(VII)的电化学行为以及从氯化胆碱-尿素深共晶溶剂中电沉积镍铼合金

IF 3.1 4区 工程技术 Q2 ELECTROCHEMISTRY Journal of The Electrochemical Society Pub Date : 2024-09-17 DOI:10.1149/1945-7111/ad77f6
Mani Jayakumar, M. Karthikeyan, G. Murali Krishna and Chrysanthus Andrew
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引用次数: 0

摘要

报告了镍(II)-铼(VII)的电化学行为以及使用氯化胆碱:2 尿素深共晶溶剂(Reline DES)电沉积镍铼合金的情况。使用紫外可见光谱法研究了 Reline DES 中镍(II)-铼(VII)的种类。Ni2+-ReO4- 在 Reline 中的循环伏安法表明,两种金属离子在玻璃碳电极上同时还原,并受到非可逆扩散过程的控制。在还原 Ni2+-ReO4- 的过程中获得的计时器图表明,双金属相在电极表面逐渐成核并三维生长。在静电和恒电位条件下,在铜基底上进行了镍铼合金的电沉积。通过静电沉积获得了光滑均匀的沉积物。沉积物的 X 射线衍射分析表明,沉积物是无定形的镍铼合金(电压为 -1.2 V),在 1000 °C 退火后结晶成六方相,同时形态从球形颗粒变为不规则多边形。
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Electrochemical Behaviour of Nickel(II)-Rhenium(VII) And Electrodeposition of Nickel-Rhenium Alloy from Choline Chloride - Urea Deep Eutectic Solvent
The electrochemical behaviour of nickel(II)-rhenium(VII) and the electrodeposition of nickel-rhenium alloy using choline chloride: 2 Urea deep eutectic solvent (Reline DES) is reported. Speciation of nickel(II)-rhenium(VII) in Reline DES was studied using UV -Visible spectroscopy. Cyclic voltammetry of Ni2+-ReO4− in Reline indicates the simultaneous reduction of two metal ions at glassy carbon electrode controlled by non-reversible diffusion process. Chronoamperograms obtained for the reduction of Ni2+-ReO4− suggests nucleation and three-dimensional growth of bimetallic phase on electrode surface followed progressive nucleation. Electrodeposition of nickel—rhenium alloy was carried out on copper substrates under galvanostatic and potentiostatic conditions. Smooth and uniform deposits were obtained by galvanostatic deposition. X-ray diffraction analysis of the deposit confirmed it to be nickel-rhenium alloy (at −1.2 V) in amorphous form which upon annealing at 1000 °C crystallizes into hexagonal phase with concurrent morphology change from spherical particles to irregular polygons.
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来源期刊
CiteScore
7.20
自引率
12.80%
发文量
1369
审稿时长
1.5 months
期刊介绍: The Journal of The Electrochemical Society (JES) is the leader in the field of solid-state and electrochemical science and technology. This peer-reviewed journal publishes an average of 450 pages of 70 articles each month. Articles are posted online, with a monthly paper edition following electronic publication. The ECS membership benefits package includes access to the electronic edition of this journal.
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