Microelectrode voltammetric analysis of samarium ions in LiCl–KCl eutectic molten salt

Wonseok Yang; Na-ri Lee; Chanyong Jung; Tae-Hong Park; Sungyeol Choi; Sang-Eun Bae

Electrochemistry Communications (Apr 2023)

Microelectrode voltammetric analysis of samarium ions in LiCl–KCl eutectic molten salt

Wonseok Yang,
Na-ri Lee,
Chanyong Jung,
Tae-Hong Park,
Sungyeol Choi,
Sang-Eun Bae

Affiliations

Wonseok Yang: Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea; Nuclear Research Institute for Future Technology and Policy, Seoul National University, Seoul 08826, Republic of Korea
Na-ri Lee: Nuclear Chemistry Technology Division, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of Korea
Chanyong Jung: Nuclear Chemistry Technology Division, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of Korea
Tae-Hong Park: Radioactive Waste Chemical Analysis Center, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of Korea; Department of Radiochemistry, University of Science and Technology, Daejeon 34113, Republic of Korea; Corresponding authors at: Center for Chemical Analysis of Radioactive Wastes, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of Korea (T.-H. Park). Radiochemistry Research Division, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of Korea (S.-E. Bae). Department of Nuclear Engineering, Seoul National University, Seoul 08826, Republic of Korea (S. Choi).
Sungyeol Choi: Department of Nuclear Engineering, Seoul National University, Seoul 08826, Republic of Korea; Nuclear Research Institute for Future Technology and Policy, Seoul National University, Seoul 08826, Republic of Korea; Institute of Engineering Research, Seoul National University, Seoul 08826, Republic of Korea; Corresponding authors at: Center for Chemical Analysis of Radioactive Wastes, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of Korea (T.-H. Park). Radiochemistry Research Division, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of Korea (S.-E. Bae). Department of Nuclear Engineering, Seoul National University, Seoul 08826, Republic of Korea (S. Choi).
Sang-Eun Bae: Nuclear Chemistry Technology Division, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of Korea; Department of Radiochemistry, University of Science and Technology, Daejeon 34113, Republic of Korea; Corresponding authors at: Center for Chemical Analysis of Radioactive Wastes, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of Korea (T.-H. Park). Radiochemistry Research Division, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of Korea (S.-E. Bae). Department of Nuclear Engineering, Seoul National University, Seoul 08826, Republic of Korea (S. Choi).

Journal volume & issue: Vol. 149
p. 107470

Abstract

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A microelectrode is useful to determine electrochemical parameters such as diffusion coefficient, exchange current density, and Tafel slope without the limitations of ion diffusion. This study aims to develop a new microelectrode for use in high-temperature molten salts, which has been evaluated by determining the parameters of the Sm(III)/Sm(II) reaction in a LiCl–KCl eutectic molten salt. The electrochemical and kinetic properties of the samarium ion in the temperature range 723–823 K were calculated using the limiting current from cyclic voltammograms and the Allen–Hickling equation. The results imply that kinetic parameters (exchange current density and charge transfer coefficient) critical for designing pyroprocesses can be obtained using the developed microelectrode.

Published in Electrochemistry Communications

ISSN: 1388-2481 (Print); 1873-1902 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Technology: Chemical technology: Industrial electrochemistry; Science: Chemistry
Website: https://www.journals.elsevier.com/electrochemistry-communications

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