Determination of the recombination coefficient in electrolytic solutions from impedance spectroscopy measurements

Giovani  Barbero; Nikolaos Fytas; Ioannis Lelidis; João Victor Da  da Silva Andrade; Fernando Carlos Messias  Freire; Adriel Santana

doi:10.1016/j.jelechem.2022.116070

Determination of the recombination coefficient in electrolytic solutions from impedance spectroscopy measurements

Giovani Barbero , Nikolaos Fytas, Ioannis Lelidis, João Victor Da da Silva Andrade, Fernando Carlos Messias Freire, Adriel Santana

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

48 Downloads (Pure)

Abstract

The dependence of the actual/effective ionic concentration on the nominal salt concentration is experimentally investigated for aqueous solutions of NaCl and KCl. The actual ionic bulk density is determined by means of the impedance spectroscopy technique using two approaches for the data analysis: A first approach scrutinizing the real part's plateau of the cell's electric impedance spectrum versus the bulk density of dopant when the impedance is written in the series representation. A second one via extraction of the ionic density from simultaneously fitting of the real and imaginary parts of the impedance spectrum by using the Poisson-Nernst-Planck model. The validity of this procedure reposes on the hypothesis that both the diffusion coefficient and the dielectric constant are independent from the salt concentration in the explored range of concentrations. Our experimental results indicate that a first-order reaction describes well the dissociation phenomenon. The dissociation-association ratio of the reaction has been calculated. Deviations from linearity appear at rather low concentrations of the order of mM.

Original language	English
Article number	116070
Number of pages	6
Journal	Journal of Electroanalytical Chemistry
Volume	907
Early online date	22 Jan 2022
DOIs	https://doi.org/10.1016/j.jelechem.2022.116070
Publication status	Published - 15 Feb 2022

Bibliographical note

© 2022, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

Copyright © and Moral Rights are retained by the author(s) and/ or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This item cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder(s). The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders.

This document is the author’s post-print version, incorporating any revisions agreed during the peer-review process. Some differences between the published version and this version may remain and you are advised to consult the published version if you wish to cite from it.

Keywords

Aqueous solutions of ions
Poisson-Nernst-Planck model
Reaction constant
Dissociation-association effect
Impedance spectroscopy

Access to Document

10.1016/j.jelechem.2022.116070

Post-PrintAccepted author manuscript, 1.42 MBLicence: CC BY-NC-ND

Cite this

@article{474a6871504f4031a4ea609ddd580a2c,

title = "Determination of the recombination coefficient in electrolytic solutions from impedance spectroscopy measurements",

abstract = "The dependence of the actual/effective ionic concentration on the nominal salt concentration is experimentally investigated for aqueous solutions of NaCl and KCl. The actual ionic bulk density is determined by means of the impedance spectroscopy technique using two approaches for the data analysis: A first approach scrutinizing the real part's plateau of the cell's electric impedance spectrum versus the bulk density of dopant when the impedance is written in the series representation. A second one via extraction of the ionic density from simultaneously fitting of the real and imaginary parts of the impedance spectrum by using the Poisson-Nernst-Planck model. The validity of this procedure reposes on the hypothesis that both the diffusion coefficient and the dielectric constant are independent from the salt concentration in the explored range of concentrations. Our experimental results indicate that a first-order reaction describes well the dissociation phenomenon. The dissociation-association ratio of the reaction has been calculated. Deviations from linearity appear at rather low concentrations of the order of mM.",

keywords = "Aqueous solutions of ions, Poisson-Nernst-Planck model, Reaction constant, Dissociation-association effect, Impedance spectroscopy",

author = "Giovani Barbero and Nikolaos Fytas and Ioannis Lelidis and {da Silva Andrade}, {Jo{\~a}o Victor Da} and Freire, {Fernando Carlos Messias} and Adriel Santana",

note = "{\textcopyright} 2022, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ Copyright {\textcopyright} and Moral Rights are retained by the author(s) and/ or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This item cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder(s). The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders. This document is the author{\textquoteright}s post-print version, incorporating any revisions agreed during the peer-review process. Some differences between the published version and this version may remain and you are advised to consult the published version if you wish to cite from it. ",

year = "2022",

month = feb,

day = "15",

doi = "10.1016/j.jelechem.2022.116070",

language = "English",

volume = "907",

journal = "Journal of Electroanalytical Chemistry",

issn = "1572-6657",

publisher = "Elsevier",

}

TY - JOUR

T1 - Determination of the recombination coefficient in electrolytic solutions from impedance spectroscopy measurements

AU - Barbero , Giovani

AU - Fytas, Nikolaos

AU - Lelidis, Ioannis

AU - da Silva Andrade, João Victor Da

AU - Freire, Fernando Carlos Messias

AU - Santana, Adriel

N1 - © 2022, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ Copyright © and Moral Rights are retained by the author(s) and/ or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This item cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder(s). The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders. This document is the author’s post-print version, incorporating any revisions agreed during the peer-review process. Some differences between the published version and this version may remain and you are advised to consult the published version if you wish to cite from it.

PY - 2022/2/15

Y1 - 2022/2/15

N2 - The dependence of the actual/effective ionic concentration on the nominal salt concentration is experimentally investigated for aqueous solutions of NaCl and KCl. The actual ionic bulk density is determined by means of the impedance spectroscopy technique using two approaches for the data analysis: A first approach scrutinizing the real part's plateau of the cell's electric impedance spectrum versus the bulk density of dopant when the impedance is written in the series representation. A second one via extraction of the ionic density from simultaneously fitting of the real and imaginary parts of the impedance spectrum by using the Poisson-Nernst-Planck model. The validity of this procedure reposes on the hypothesis that both the diffusion coefficient and the dielectric constant are independent from the salt concentration in the explored range of concentrations. Our experimental results indicate that a first-order reaction describes well the dissociation phenomenon. The dissociation-association ratio of the reaction has been calculated. Deviations from linearity appear at rather low concentrations of the order of mM.

AB - The dependence of the actual/effective ionic concentration on the nominal salt concentration is experimentally investigated for aqueous solutions of NaCl and KCl. The actual ionic bulk density is determined by means of the impedance spectroscopy technique using two approaches for the data analysis: A first approach scrutinizing the real part's plateau of the cell's electric impedance spectrum versus the bulk density of dopant when the impedance is written in the series representation. A second one via extraction of the ionic density from simultaneously fitting of the real and imaginary parts of the impedance spectrum by using the Poisson-Nernst-Planck model. The validity of this procedure reposes on the hypothesis that both the diffusion coefficient and the dielectric constant are independent from the salt concentration in the explored range of concentrations. Our experimental results indicate that a first-order reaction describes well the dissociation phenomenon. The dissociation-association ratio of the reaction has been calculated. Deviations from linearity appear at rather low concentrations of the order of mM.

KW - Aqueous solutions of ions

KW - Poisson-Nernst-Planck model

KW - Reaction constant

KW - Dissociation-association effect

KW - Impedance spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=85123717097&partnerID=8YFLogxK

U2 - 10.1016/j.jelechem.2022.116070

DO - 10.1016/j.jelechem.2022.116070

M3 - Article

SN - 1572-6657

VL - 907

JO - Journal of Electroanalytical Chemistry

JF - Journal of Electroanalytical Chemistry

M1 - 116070

ER -

Determination of the recombination coefficient in electrolytic solutions from impedance spectroscopy measurements

Abstract

Bibliographical note

Keywords

Access to Document

Other files and links

Fingerprint

Cite this