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Electrochemical Behavior of CsI in LiCl Molten Salt
Science and Technology of Nuclear Installations ( IF 1.0 ) Pub Date : 2020-10-15 , DOI: 10.1155/2020/8852351
Sung-Wook Kim 1 , Sang-Kwon Lee 1 , Min Ku Jeon 1 , Eun-Young Choi 1
Affiliation  

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:

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。
更新日期:2020-10-16
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