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Title: Determination of kinetic properties of Sm(III)/Sm(II) reaction in LiCl–KCl molten salt using cyclic voltammetry and electrochemical impedance spectroscopy

Abstract

Electrochemical and kinetic properties of samarium (Sm) in LiCl-KCl eutectic salt were explored at various concentrations and temperatures. Cyclic voltammetry (CV) were performed to determine diffusion coefficient and the rate constant (k0). In addition, electrochemical impedance spectroscopy (EIS) was conducted for additional understandings on the kinetic behaviors of Sm(III)/Sm(II) couple. The values of the diffusion coefficients were in the range of 3.54 × 10-6 to 9.58 × 10-5 cm2 s-1 and the values of k0 were estimated to be in the range of 0.63 × 10-2 to 1.11 × 10-2 cm s-1. The values of i0 for Sm(III)/Sm(II) were computed by obtaining the charge transfer resistance from the curve fitting analysis, ranging from 1.04 ×10-3 to 2.97×10-3 A cm-2.

Authors:
ORCiD logo [1];  [2];  [3];  [2];  [4]
  1. Virginia Commonwealth Univ., Richmond, VA (United States); Korea Atomic Energy Research Inst., Daejeon (South Korea)
  2. Virginia Commonwealth Univ., Richmond, VA (United States)
  3. Idaho National Lab. (INL), Idaho Falls, ID (United States)
  4. Boise State Univ., ID (United States)
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1575283
Report Number(s):
INL/JOU-17-41558-Rev000
Journal ID: ISSN 0236-5731; TRN: US2001340
Grant/Contract Number:  
AC07-05ID14517
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Radioanalytical and Nuclear Chemistry
Additional Journal Information:
Journal Volume: 322; Journal Issue: 2; Journal ID: ISSN 0236-5731
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; samarium, exchange current density, molten salt, impedance spectroscopy

Citation Formats

Yoon, Dalsung, Pormatikul, Jinnapat, Shaltry, Michael, Phongikaroon, Supathorn, and Allahar, Kerry. Determination of kinetic properties of Sm(III)/Sm(II) reaction in LiCl–KCl molten salt using cyclic voltammetry and electrochemical impedance spectroscopy. United States: N. p., 2019. Web. https://doi.org/10.1007/s10967-019-06796-z.
Yoon, Dalsung, Pormatikul, Jinnapat, Shaltry, Michael, Phongikaroon, Supathorn, & Allahar, Kerry. Determination of kinetic properties of Sm(III)/Sm(II) reaction in LiCl–KCl molten salt using cyclic voltammetry and electrochemical impedance spectroscopy. United States. https://doi.org/10.1007/s10967-019-06796-z
Yoon, Dalsung, Pormatikul, Jinnapat, Shaltry, Michael, Phongikaroon, Supathorn, and Allahar, Kerry. Thu . "Determination of kinetic properties of Sm(III)/Sm(II) reaction in LiCl–KCl molten salt using cyclic voltammetry and electrochemical impedance spectroscopy". United States. https://doi.org/10.1007/s10967-019-06796-z. https://www.osti.gov/servlets/purl/1575283.
@article{osti_1575283,
title = {Determination of kinetic properties of Sm(III)/Sm(II) reaction in LiCl–KCl molten salt using cyclic voltammetry and electrochemical impedance spectroscopy},
author = {Yoon, Dalsung and Pormatikul, Jinnapat and Shaltry, Michael and Phongikaroon, Supathorn and Allahar, Kerry},
abstractNote = {Electrochemical and kinetic properties of samarium (Sm) in LiCl-KCl eutectic salt were explored at various concentrations and temperatures. Cyclic voltammetry (CV) were performed to determine diffusion coefficient and the rate constant (k0). In addition, electrochemical impedance spectroscopy (EIS) was conducted for additional understandings on the kinetic behaviors of Sm(III)/Sm(II) couple. The values of the diffusion coefficients were in the range of 3.54 × 10-6 to 9.58 × 10-5 cm2 s-1 and the values of k0 were estimated to be in the range of 0.63 × 10-2 to 1.11 × 10-2 cm s-1. The values of i0 for Sm(III)/Sm(II) were computed by obtaining the charge transfer resistance from the curve fitting analysis, ranging from 1.04 ×10-3 to 2.97×10-3 A cm-2.},
doi = {10.1007/s10967-019-06796-z},
journal = {Journal of Radioanalytical and Nuclear Chemistry},
number = 2,
volume = 322,
place = {United States},
year = {2019},
month = {9}
}

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