Microelectrode voltammetric analysis of samarium ions in LiCl–KCl eutectic molten salt
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...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-04-01
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| Series: | Electrochemistry Communications |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1388248123000449 |
| _version_ | 1797853913536266240 |
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| author | Wonseok Yang Na-ri Lee Chanyong Jung Tae-Hong Park Sungyeol Choi Sang-Eun Bae |
| author_facet | Wonseok Yang Na-ri Lee Chanyong Jung Tae-Hong Park Sungyeol Choi Sang-Eun Bae |
| author_sort | Wonseok Yang |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-09T19:58:29Z |
| format | Article |
| id | doaj.art-4cf54ba102084b9b8083434ed53a548a |
| institution | Directory Open Access Journal |
| issn | 1388-2481 |
| language | English |
| last_indexed | 2024-04-09T19:58:29Z |
| publishDate | 2023-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Electrochemistry Communications |
| spelling | doaj.art-4cf54ba102084b9b8083434ed53a548a2023-04-03T05:21:17ZengElsevierElectrochemistry Communications1388-24812023-04-01149107470Microelectrode voltammetric analysis of samarium ions in LiCl–KCl eutectic molten saltWonseok Yang0Na-ri Lee1Chanyong Jung2Tae-Hong Park3Sungyeol Choi4Sang-Eun Bae5Department 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 KoreaNuclear Chemistry Technology Division, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of KoreaNuclear Chemistry Technology Division, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of KoreaRadioactive 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).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).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).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.http://www.sciencedirect.com/science/article/pii/S1388248123000449MicroelectrodePyroprocessingSpent nuclear fuelAllen-Hickling plotExchange current densityActivation energy |
| spellingShingle | Wonseok Yang Na-ri Lee Chanyong Jung Tae-Hong Park Sungyeol Choi Sang-Eun Bae Microelectrode voltammetric analysis of samarium ions in LiCl–KCl eutectic molten salt Electrochemistry Communications Microelectrode Pyroprocessing Spent nuclear fuel Allen-Hickling plot Exchange current density Activation energy |
| title | Microelectrode voltammetric analysis of samarium ions in LiCl–KCl eutectic molten salt |
| title_full | Microelectrode voltammetric analysis of samarium ions in LiCl–KCl eutectic molten salt |
| title_fullStr | Microelectrode voltammetric analysis of samarium ions in LiCl–KCl eutectic molten salt |
| title_full_unstemmed | Microelectrode voltammetric analysis of samarium ions in LiCl–KCl eutectic molten salt |
| title_short | Microelectrode voltammetric analysis of samarium ions in LiCl–KCl eutectic molten salt |
| title_sort | microelectrode voltammetric analysis of samarium ions in licl kcl eutectic molten salt |
| topic | Microelectrode Pyroprocessing Spent nuclear fuel Allen-Hickling plot Exchange current density Activation energy |
| url | http://www.sciencedirect.com/science/article/pii/S1388248123000449 |
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