In this work, the electrochemical behavior of lanthanides (except promethium) on several active cathodes in LiCl–KCl molten salts was investigated. We have discovered that the reduction potentials of lanthanide alloys present a “bimodal effect”. A numerical model was established based on the result of multiple linear regression analyses, which indicates that the reduction potentials are correlated with differences in atomic radii and differences in electronegativity. Employing the fitted formulae, which provide a preliminary model of the behavior of these elements in electrolysis-based pyroprocessing, the electrochemistry of both lanthanides and actinides on active metal cathodes could be reasonably estimated.

在这项工作中，研究了镧系元素（pro除外）在LiCl-KCl熔融盐中几个活性阴极上的电化学行为。我们已经发现镧系合金的还原电位呈现出“双峰效应”。基于多重线性回归分析的结果，建立了一个数值模型，表明还原电势与原子半径的差异和电负性的差异相关。使用适合的公式，提供这些元素在基于电解的热解过程中行为的初步模型，可以合理地估计镧系元素和act系元素在活性金属阴极上的电化学。