Influence of Fluoride Ions on the Speciation and Electrochemical Behavior of Th(IV) in Molten LiCl-KCl with a Copper Electrode
- 1 February 2021
- journal article
- research article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 168 (2), 026516
- https://doi.org/10.1149/1945-7111/abe56c
Abstract
The speciation and electrochemical behavior of thorium (IV) fluoride in molten LiCl-KCl with a copper working electrode was investigated. In addition to the reduction of Th(IV) [ThCl62- and ThCl73-] to metallic thorium, there is a minor peak in the cyclic and square wave voltammagrams that results from the reduction of Th(IV) [ThCl6-xFx2- and ThCl7-xFx3-] to metallic thorium on the basis of the square wave voltammetry and X-ray diffraction results. This is also supported by the formation of metallic thorium deposits upon potentiostatic electrolysis. In addition, the diffusion coefficient and diffusion activation energy of Th(IV) with a copper electrode was determined, which show similarity in comparison to those obtained using inert working electrodes.Keywords
Funding Information
- Frontier Science Key Program of the Chinese Academy of Sciences (QYZDY-SSW-JSC016)
- Youth Innovation Promotion Association of the Chinese Academy of Sciences (2017307)
- Strategic Priority Research Program of the Chinese Academy of Sciences (XDA02030000)
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