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首页> 外文期刊>RSC Advances >Electrochemical properties of yttrium on W and Pb electrodes in LiCl–KCl eutectic melts
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Electrochemical properties of yttrium on W and Pb electrodes in LiCl–KCl eutectic melts

机译：LiCl–KCl共熔熔体中W和Pb电极上钇的电化学性质

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Cyclic voltammetry, square wave voltammetry, linear polarization, chronopotentiometry and chronoamperometry were performed to investigate the electrochemical properties of Y( III ) on W and Pb electrodes in LiCl–KCl eutectic melts. The diffusion coefficient of Y( III ) measured by various techniques was in the order of 10 ~(?5) . The nucleation of Y on W electrode was found to comply with the instantaneous nucleation mechanism. With increasing temperature, the exchange current densities increased and the charge-transfer resistances decreased, and exchange current densities are distinctly larger on liquid Pb electrode compared with W electrode. In addition, the co-deposition mechanism of Y( III ) and Pb( II ) on W electrode was also studied and four Pb–Y intermetallics could be detected. The feasibility of extraction metallic Y from the melts was explored by co-deposition on W electrode and under-potential deposition on liquid Pb electrode and the extracted products consisted of Pb _(3) Y and Pb phases.
机译：用循环伏安法，方波伏安法，线性极化法，计时电位法和计时电流法研究了LiCl-KCl共熔熔体中W和Pb电极上Y（III）的电化学性质。通过各种技术测得的Y（III）的扩散系数约为10〜（Δ5）。发现W电极上的Y成核符合瞬时成核机理。随着温度的升高，与W电极相比，液态Pb电极的交换电流密度增加，电荷转移电阻减小，并且交换电流密度明显更大。另外，还研究了Y（III）和Pb（II）在W电极上的共沉积机理，并且可以检测到四种Pb-Y金属间化合物。通过在W电极上共沉积和在液态Pb电极上欠电势沉积，探讨了从熔体中提取金属Y的可行性，提取的产物由Pb _（3）Y和Pb相组成。

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