Document Type
Article
Publication Date
10-9-2024
Abstract
In this work, the electrodeposition reaction of Am in AmCl₃LiCl-KCl molten salt was studied using voltammetry and chronoamperometry. Electrodeposition of Am was shown to proceed via a two − step reaction scheme, involving the one-electron transfer reduction of Am³⁺ to Am²⁺, followed by the two-electron transfer reduction of intermediate Am²⁺ to Am⁰. A low Coulombic efficiency of Am deposition was measured despite the Am deposition occurring within the thermodynamic stability window of the supporting LiCl-KCl electrolyte. We hypothesize that the low efficiency is due to out-diffusion of the intermediate Am²⁺ species away from the electrode surface. Experimental observations provide evidence of a kinetically − limited electrodeposition reaction, which allows for the loss of intermediate Am²⁺ via diffusion leading to Am deposition inefficiency.
Keywords
electrochemical engineering, electrodeposition, electrodeposition - modeling
Language
English
Publication Title
Journal of the Electrochemical Society
Grant
DE-AC02-06CH11357
Rights
© 2024 The Author(s). This is an Open Access work distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Recommended Citation
Bethany Dean-Kersten et al 2024 J. Study of Am electrodeposition from AmCl₃-LiCl-KCl Molten Salt, Electrochem. Soc. 171 102504
Manuscript Version
Final Publisher Version