The electrochemical behavior of CsI in LiCl molten salt was investigated to identify its impact on the electrolytic oxide reduction of oxide-phase spent nuclear fuels by combined electrolysis and cyclic voltammetry experiments of LiCl-CsI in comparison with LiCl, LiCl-CsCl, and LiCl-LiI. It was found that Cs⁺ ions were hardly involved in the cathode reaction, and reduction of Li⁺ ions occurred dominantly in the cathode. In contrast, incorporation of I⁻ ions induced low-potential anode reaction compared with the I⁻ ion-free cases. Such additional electrochemical reaction resulted in the generation of I₂ and/or ICl gases, which would increase a process burden for treating ¹²⁹I with exceptionally long lifetime. In this respect, separating CsI from spent nuclear fuel before the electrolytic oxide reduction is recommended for the purpose of efficient waste management.

中文翻译：

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LiCl熔盐中CsI的电化学行为

通过将LiCl-CsI与LiCl，LiCl-CsCl和LiCl-相比较的电解和循环伏安法实验，研究了CsI在LiCl熔盐中的电化学行为，以确定其对氧化相乏核燃料电解氧化物还原的影响。李 发现Cs ⁺离子几乎不参与阴极反应，并且Li ⁺离子的还原主要发生在阴极中。与此相反，我的掺入^-诱导的低电位阳极反应离子与我比较^-无离子的情况。这种额外的电化学反应导致生成I ₂和/或ICl气体，这将增加处理¹²⁹的工艺负担我的寿命非常长。在这方面，为有效管理废物，建议在电解氧化物还原之前从乏核​​燃料中分离CsI。