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首页> 外文期刊>International Journal of Electrochemical Science >Electrochemical Behavior of Nickel in the EMIC Ionic Liquid with Glycol
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Electrochemical Behavior of Nickel in the EMIC Ionic Liquid with Glycol

机译：乙二醇在EMIC离子液体中镍的电化学行为

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摘要

The electrochemistry of Ni(II) was studied with voltammetry and chronoamperometry at glass carbon(GC), mild steel (MS) and Pt electrodes in 1-ethyl-3-methylimidazolium (EMIC) ionic liquid withethylene glycol. Cyclic voltammetry results shows that Ni(II) could be reduced to nickel metal via asingle-step electron transfer process. However, the anodic dissolution of the nickel deposits wassluggish. In addition, the initial reduction potential of Ni(II) shifted positively as the temperature or-7 2 concentration of Ni(II) increased. The diffusion coefficient of Ni(II) was estimated to be 4.610 cm-1 s . The average activation energy for diffusion coefficient is about 21.75 kJ/mol. Theelectrodeposition of nickel proceeds via three-dimensional instantaneous nucleation with diffusion- controlled growth on both glassy carbon and Pt substrates. Smooth and dense Ni deposits can beobtained from EMIC ionic liquid with glycol.
机译：用伏安法和计时电流法研究了乙二醇在1-乙基-3-甲基咪唑鎓（EMIC）离子液体中在玻璃碳（GC），低碳钢（MS）和铂电极上的Ni（II）的电化学。循环伏安法结果表明，Ni（II）可以通过单步电子转移过程还原为镍金属。但是，镍沉积物的阳极溶解缓慢。另外，Ni（II）的初始还原电位随着Ni（II）的温度或-7 2浓度的增加而正向移动。 Ni（II）的扩散系数估计为4.610 cm-1 s。扩散系数的平均活化能约为21.75 kJ / mol。镍的电沉积通过三维瞬时成核并在玻璃碳和Pt衬底上进行扩散受​​控的生长来进行。可以从EMIC离子液体和乙二醇中获得光滑而致密的镍沉积物。

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