Transformation to potential‐program invariant form of voltammograms and dynamic electrochemical impedance spectra of surface confined redox species

Abstract A theory is presented by which voltammograms, and dynamic electrochemical impedance spectroscopy (dEIS) measurements of redox processes of surface‐confined species can be analyzed. By the proposed procedure, from a set of voltammograms taken at varied scan‐rates, two scan‐rate independent,...

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Autor principal:	Tamás Pajkossy
Formato:	article
Lenguaje:	EN
Publicado:	Wiley-VCH 2021
Materias:	charge transfer data analysis electrode kinetics Industrial electrochemistry TP250-261 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/ce242d26c75e4404ae9c36be748d2d31
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spelling	oai:doaj.org-article:ce242d26c75e4404ae9c36be748d2d312021-11-23T18:05:26ZTransformation to potential‐program invariant form of voltammograms and dynamic electrochemical impedance spectra of surface confined redox species2698-597710.1002/elsa.202000039https://doaj.org/article/ce242d26c75e4404ae9c36be748d2d312021-11-01T00:00:00Zhttps://doi.org/10.1002/elsa.202000039https://doaj.org/toc/2698-5977Abstract A theory is presented by which voltammograms, and dynamic electrochemical impedance spectroscopy (dEIS) measurements of redox processes of surface‐confined species can be analyzed. By the proposed procedure, from a set of voltammograms taken at varied scan‐rates, two scan‐rate independent, hysteresis‐free functions of potential can be calculated. One of them characterizes the redox kinetics, the other is the electrode charge associated with the redox equilibrium. The theory also comprises the analysis of the impedance spectra of the same system, which have been measured during dynamic conditions, i.e., during potental scans. Because of the formal analogy, the procedure is applicable also for voltammetry and dEIS of adsorption processes.Tamás PajkossyWiley-VCHarticlecharge transferdata analysiselectrodekineticsIndustrial electrochemistryTP250-261ChemistryQD1-999ENElectrochemical Science Advances, Vol 1, Iss 4, Pp n/a-n/a (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	charge transfer data analysis electrode kinetics Industrial electrochemistry TP250-261 Chemistry QD1-999
spellingShingle	charge transfer data analysis electrode kinetics Industrial electrochemistry TP250-261 Chemistry QD1-999 Tamás Pajkossy Transformation to potential‐program invariant form of voltammograms and dynamic electrochemical impedance spectra of surface confined redox species
description	Abstract A theory is presented by which voltammograms, and dynamic electrochemical impedance spectroscopy (dEIS) measurements of redox processes of surface‐confined species can be analyzed. By the proposed procedure, from a set of voltammograms taken at varied scan‐rates, two scan‐rate independent, hysteresis‐free functions of potential can be calculated. One of them characterizes the redox kinetics, the other is the electrode charge associated with the redox equilibrium. The theory also comprises the analysis of the impedance spectra of the same system, which have been measured during dynamic conditions, i.e., during potental scans. Because of the formal analogy, the procedure is applicable also for voltammetry and dEIS of adsorption processes.
format	article
author	Tamás Pajkossy
author_facet	Tamás Pajkossy
author_sort	Tamás Pajkossy
title	Transformation to potential‐program invariant form of voltammograms and dynamic electrochemical impedance spectra of surface confined redox species
title_short	Transformation to potential‐program invariant form of voltammograms and dynamic electrochemical impedance spectra of surface confined redox species
title_full	Transformation to potential‐program invariant form of voltammograms and dynamic electrochemical impedance spectra of surface confined redox species
title_fullStr	Transformation to potential‐program invariant form of voltammograms and dynamic electrochemical impedance spectra of surface confined redox species
title_full_unstemmed	Transformation to potential‐program invariant form of voltammograms and dynamic electrochemical impedance spectra of surface confined redox species
title_sort	transformation to potential‐program invariant form of voltammograms and dynamic electrochemical impedance spectra of surface confined redox species
publisher	Wiley-VCH
publishDate	2021
url	https://doaj.org/article/ce242d26c75e4404ae9c36be748d2d31
work_keys_str_mv	AT tamaspajkossy transformationtopotentialprograminvariantformofvoltammogramsanddynamicelectrochemicalimpedancespectraofsurfaceconfinedredoxspecies
_version_	1718416182358310912

Transformation to potential‐program invariant form of voltammograms and dynamic electrochemical impedance spectra of surface confined redox species

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