Electrochemical Properties of NdCl3 and CeCl3 in Molten LiCl-KCl Eutectic Salt

NdCl3 and CeCl3 are characterized by the very close proximity of their standard reduction potentials. Thus, they represent the most challenging salt mixtures with respect to decoupling electrochemical responses and calculating concentrations. The goals of this study include the determination of the...

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Bibliographic Details
Published in:Applied sciences 2020-10, Vol.10 (20), p.7252
Main Authors: Kim, Seunghyun, Lee, Sang-hwan
Format: Article
Language:English
Subjects:
Cerium
chronopotentionmetry
Contact angle
cyclic voltammetry
Decoupling
Electrochemical analysis
Electrochemistry
Electrodes
electrorefining
Investigations
Lithium chloride
molten salt
Physical properties
Potassium chloride
Voltammetry
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Summary:NdCl3 and CeCl3 are characterized by the very close proximity of their standard reduction potentials. Thus, they represent the most challenging salt mixtures with respect to decoupling electrochemical responses and calculating concentrations. The goals of this study include the determination of the apparent standard potentials of both Nd3+/Nd2+ and Ce3+/Ce in LiCl-KCl-CeCl3 or NdCl3 mixtures. Matrix and concentration effects on fundamental electrochemical properties are of particular interest, as these thermodynamic properties will impact the ability to use voltammetry to measure concentrations in unknown samples. Several LiCl-KCl-CeCl3 or NdCl3 mixtures with NdCl3/CeCl3 concentrations ranging from 4 to 10 wt% at 753 to 793 K have been explored. For apparent standard potential values of CeCl3, a good agreement was obtained with the literature data, except above 773 K.
ISSN:2076-3417
2076-3417
DOI:10.3390/app10207252