Electrode reactions of Ce3+/Ce couple in LiCl–KCl solutions containing CeCl3 at solid W and liquid Cd electrodes

Kim, Si-Hyung; Paek, Seungwoo; Kim, Tack-Jin; Park, Dae-Yeob; Ahn, Do-Hee

doi:10.1016/j.electacta.2012.08.084

Cited by 45 publications

(39 citation statements)

References 14 publications

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“…The so obtained curve (c) shows a pair of oxidation-reduction peaks, which can be attributed to the Nd(III)/Nd(0) reaction, assuming no reaction or very weak reaction between Li and Nd. This method has been widely used by many researchers [10,18,33]. Thus, the results show the reduction peak potential and the oxidation peak potential of curve (c) as -1.568 V and -1.328 V, respectively.…”

Section: Analysis Of Peak I Cmentioning

confidence: 90%

“…These experiments have been conducted by numerous researchers, who have reported that useful information on M-Cd intermetallic compound formation can be obtained [10,18,22,38]. Fig.…”

Section: Electrochemical Reaction Of Ndcl 3 In Licl-kcl At Cd-coated mentioning

confidence: 99%

“…Particularly, cyclic voltammetry (CV) and potentiometry are useful methods to provide various information such as electrode potential, diffusion coefficient, activity coefficient, intermetallic compound formation and corresponding Gibbs free energy of electroactive materials [17][18][19]. By using the methods, various studies have been conducted on the reaction characteristics of solid electrodes and liquid Cd electrodes against various chlorides such as UCl 3 , PuCl 3 , NpCl 3 , LaCl 3 , CeCl 3 , and PrCl 3 in the LiCl-KCl molten salt system [10,[20][21][22][23][24][25]. However, in the case of Nd, which has the highest ratio of RE in the spent fuel, several researchers provide meaning information such as the electrode potential and the diffusion coefficient for solid electrodes [11].…”

Section: Introductionmentioning

confidence: 99%

“…In this case, RE would be probably contained in the nuclear fuel of sodium cooled fast reactor (SFR) which is manufactured by using the pyroprocess product. Because RE has a high neutron absorption, lowering the neutron efficiency in the reactor, the amount of RE from the group recovery should be minimized [10,11]. In this regard, it is crucial to understand the electrochemical behaviors and thermodynamic characteristics of reactions between various electrodes and materials such as U, TRUs, and REs to derive operating conditions and increase efficiency of pyroprocess.…”

Section: Introductionmentioning

confidence: 99%

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Electrode Reactions of Nd3+/Nd Couple in LiCl-KCl-NdCl3 Solutions at Solid W and Liquid Cd Electrodes

Sim

Kim²,

Paek

et al. 2018

International Journal of Electrochemical Science

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The behavior of Nd(III)/Nd(0) redox reaction at a solid tungsten (W) and liquid cadmium (Cd) electrodes in the LiCl-KCl-NdCl 3 system at 773 K was analyzed by using a cyclic voltammetry. The Nd(III)/Nd(0) reaction in the solid W electrode was found to occur in two steps through the process of Nd(II) ion generation. As the analytic results of the maximum current value according to scan rates in the region of 0.05 V/s to 0.3 V/s, the Nd(III)/Nd(II) reaction showed reversible reaction characteristics over the whole range, while the Nd (II)/Nd(0) reaction showed the reversible reaction in the region of 0.05 V/s to 0.2 V/s, as well as the quasi-reversible in the range of 0.2 V/s or higher. Furthermore, the diffusion coefficients of Nd(III) ion and Nd(II) ion were calculated by using the maximum current value, which were considerably consistent with the previous results of other researchers. The reduction potential of the Nd (III)/Nd(0) reaction in the liquid Cd electrode was measured as approximately 0.54 V higher than that of the solid W electrode because the reduced Nd formed an Nd-Cd intermetallic compound with a liquid Cd electrode, lowering the activity of Nd. To confirm this mechanism, experiments using Cd-coated W electrodes were conducted by using cyclic voltammetry and chronopotentiometry. The experimental results showed that 6 Nd-Cd intermetallic compounds were present. When the ratio of Cd is the highest, NdCd 11 is formed, and the potential in this case was very similar to the potential at the liquid Cd electrode. Furthermore, the Gibbs free energy and activity coefficient of Nd-Cd intermetallic compounds were calculated by analyzing the results of chronopotentiometry. The results could thermodynamically explain the potential difference of the Nd(III)/Nd(0) reactions occurring between the solid W electrode and the liquid Cd electrode.

show abstract

Section: Analysis Of Peak I Cmentioning

confidence: 90%

“…These experiments have been conducted by numerous researchers, who have reported that useful information on M-Cd intermetallic compound formation can be obtained [10,18,22,38]. Fig.…”

Section: Electrochemical Reaction Of Ndcl 3 In Licl-kcl At Cd-coated mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Electrode Reactions of Nd3+/Nd Couple in LiCl-KCl-NdCl3 Solutions at Solid W and Liquid Cd Electrodes

Sim

Kim²,

Paek

et al. 2018

International Journal of Electrochemical Science

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“…The numerical approach has enhanced the understanding of cyclic voltammetry and has enabled investigators to account for complicated phenomena such as adsorption effects. Accounting for such effects and changes in the electrode morphology is especially important for soluble-to-insoluble redox systems which are encountered in electrodeposition studies (including zinc, 7 nickel 8 and cobalt 9 for example) and in pyroprocessing studies where it is important to understand the electrochemical properties of lanthanide fission products (such as cerium, 10 lanthanum, 11 and erbium 12 ).…”

Section: Introductionmentioning

confidence: 99%

A one-dimensional stochastic approach to the study of cyclic voltammetry with adsorption effects

Samin

2016

AIP Advances

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In this study, a one-dimensional stochastic model based on the random walk approach is used to simulate cyclic voltammetry. The model takes into account mass transport, kinetics of the redox reactions, adsorption effects and changes in the morphology of the electrode. The model is shown to display the expected behavior. Furthermore, the model shows consistent qualitative agreement with a finite difference solution. This approach allows for an understanding of phenomena on a microscopic level and may be useful for analyzing qualitative features observed in experimentally recorded signals.

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A Self‐Regulated Electrostatic Shielding Layer toward Dendrite‐Free Zn Batteries

et al. 2022

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Although aqueous Zn batteries have become a more sustainable alternative to lithium‐ion batteries owing to their intrinsic security, their practical applications are limited by dendrite formation and hydrogen reactions. The first application of a rare earth metal type addition to Zn batteries, cerium chloride (CeCl3), as an effective, low‐cost, and green electrolyte additive that facilitates the formation of a dynamic electrostatic shielding layer around the Zn protuberance to induce uniform Zn deposition is presented. After introducing CeCl3 additives, the electrochemical characterizations, in situ optical microscopy observation, in situ differential electrochemical mass spectrometry, along with density functional theory calculations, and finite element method simulations reveal resisted Zn dendritic growth and enhanced electrolyte stability. As a result, the Zn–Zn cells using the CeCl3 additive exhibit a long cycling stability of 2600 h at 2 mA cm−2, an impressive cumulative areal capacity of 3.6 Ah cm−2 at 40 mA cm−2, and a high Coulombic efficiency of ≈99.7%. The fact that the Zn–LiFePO4 cells with proposed electrolyte retain capacity significantly better than the additive‐free case is even more exciting.

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Electrode reactions of Ce3+/Ce couple in LiCl–KCl solutions containing CeCl3 at solid W and liquid Cd electrodes

Cited by 45 publications

References 14 publications

Electrode Reactions of Nd3+/Nd Couple in LiCl-KCl-NdCl3 Solutions at Solid W and Liquid Cd Electrodes

Electrode Reactions of Nd3+/Nd Couple in LiCl-KCl-NdCl3 Solutions at Solid W and Liquid Cd Electrodes

A one-dimensional stochastic approach to the study of cyclic voltammetry with adsorption effects

A Self‐Regulated Electrostatic Shielding Layer toward Dendrite‐Free Zn Batteries

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