Kinetic analysis of the hydrogen electrode reaction in unbuffered media. Theory and studies on Pt microelectrodes

Autores
Arce, Mauricio Damián; Bonazza, Horacio; Fernandez, Jose Luis
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
tThe hydrogen electrode reaction (HER) in steady state was described through a model involving mechanistic, mass-transport, and acid-base events. The model can be used to analyze polarization curves at any pH in conditions of high ionic strength and to obtain from these dependences the complete set of kinetic parameters. On the one hand, it involves the Volmer-Heyrovsky-Tafel (VHT) mechanism with H+ and H2(dis) at the electrode surface. On the other hand, the reaction of water dissociation at equilibrium is simultaneously considered as a source of H+ and HO-. The mass-transport by diffusion of H2(dis), H+ and HO- is included. In conditions of high mass-transport rates where kinetics plays an important role, the equations are able to reproduce the typical features that are observed in experimental current-potential curves in neutral and acid solutions (pH < 8). Besides, they can be used to analyze the dependence of the polarization resistance on the H+ concentration over this pH range. From these dependences, the elementary kinetic parameters of the VHT mechanism can be obtained, as it was demonstrated in this work on platinum microelectrodes.
Fil: Arce, Mauricio Damián. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; Argentina
Fil: Bonazza, Horacio. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada E Ingeniería Electroquímica; Argentina
Fil: Fernandez, Jose Luis. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada E Ingeniería Electroquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe; Argentina
Materia
Hydrogen Oxidation
Hydrogen Evolution
Microelectrodes
Water Dissociation
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/6410
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/6410
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Kinetic analysis of the hydrogen electrode reaction in unbuffered media. Theory and studies on Pt microelectrodesArce, Mauricio DamiánBonazza, HoracioFernandez, Jose LuisHydrogen OxidationHydrogen EvolutionMicroelectrodesWater Dissociationhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1tThe hydrogen electrode reaction (HER) in steady state was described through a model involving mechanistic, mass-transport, and acid-base events. The model can be used to analyze polarization curves at any pH in conditions of high ionic strength and to obtain from these dependences the complete set of kinetic parameters. On the one hand, it involves the Volmer-Heyrovsky-Tafel (VHT) mechanism with H+ and H2(dis) at the electrode surface. On the other hand, the reaction of water dissociation at equilibrium is simultaneously considered as a source of H+ and HO-. The mass-transport by diffusion of H2(dis), H+ and HO- is included. In conditions of high mass-transport rates where kinetics plays an important role, the equations are able to reproduce the typical features that are observed in experimental current-potential curves in neutral and acid solutions (pH < 8). Besides, they can be used to analyze the dependence of the polarization resistance on the H+ concentration over this pH range. From these dependences, the elementary kinetic parameters of the VHT mechanism can be obtained, as it was demonstrated in this work on platinum microelectrodes.Fil: Arce, Mauricio Damián. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; ArgentinaFil: Bonazza, Horacio. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada E Ingeniería Electroquímica; ArgentinaFil: Fernandez, Jose Luis. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada E Ingeniería Electroquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe; ArgentinaElsevier2013-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/6410Arce, Mauricio Damián; Bonazza, Horacio; Fernandez, Jose Luis; Kinetic analysis of the hydrogen electrode reaction in unbuffered media. Theory and studies on Pt microelectrodes; Elsevier; Electrochimica Acta; 107; 9-2013; 248-2600013-4686enginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.electacta.2013.05.135info:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S001346861301075Xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-17T11:37:32Zoai:ri.conicet.gov.ar:11336/6410instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-17 11:37:32.849CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Kinetic analysis of the hydrogen electrode reaction in unbuffered media. Theory and studies on Pt microelectrodes
title Kinetic analysis of the hydrogen electrode reaction in unbuffered media. Theory and studies on Pt microelectrodes
spellingShingle Kinetic analysis of the hydrogen electrode reaction in unbuffered media. Theory and studies on Pt microelectrodes
Arce, Mauricio Damián
Hydrogen Oxidation
Hydrogen Evolution
Microelectrodes
Water Dissociation
title_short Kinetic analysis of the hydrogen electrode reaction in unbuffered media. Theory and studies on Pt microelectrodes
title_full Kinetic analysis of the hydrogen electrode reaction in unbuffered media. Theory and studies on Pt microelectrodes
title_fullStr Kinetic analysis of the hydrogen electrode reaction in unbuffered media. Theory and studies on Pt microelectrodes
title_full_unstemmed Kinetic analysis of the hydrogen electrode reaction in unbuffered media. Theory and studies on Pt microelectrodes
title_sort Kinetic analysis of the hydrogen electrode reaction in unbuffered media. Theory and studies on Pt microelectrodes
dc.creator.none.fl_str_mv Arce, Mauricio Damián
Bonazza, Horacio
Fernandez, Jose Luis
author Arce, Mauricio Damián
author_facet Arce, Mauricio Damián
Bonazza, Horacio
Fernandez, Jose Luis
author_role author
author2 Bonazza, Horacio
Fernandez, Jose Luis
author2_role author
author
dc.subject.none.fl_str_mv Hydrogen Oxidation
Hydrogen Evolution
Microelectrodes
Water Dissociation
topic Hydrogen Oxidation
Hydrogen Evolution
Microelectrodes
Water Dissociation
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv tThe hydrogen electrode reaction (HER) in steady state was described through a model involving mechanistic, mass-transport, and acid-base events. The model can be used to analyze polarization curves at any pH in conditions of high ionic strength and to obtain from these dependences the complete set of kinetic parameters. On the one hand, it involves the Volmer-Heyrovsky-Tafel (VHT) mechanism with H+ and H2(dis) at the electrode surface. On the other hand, the reaction of water dissociation at equilibrium is simultaneously considered as a source of H+ and HO-. The mass-transport by diffusion of H2(dis), H+ and HO- is included. In conditions of high mass-transport rates where kinetics plays an important role, the equations are able to reproduce the typical features that are observed in experimental current-potential curves in neutral and acid solutions (pH < 8). Besides, they can be used to analyze the dependence of the polarization resistance on the H+ concentration over this pH range. From these dependences, the elementary kinetic parameters of the VHT mechanism can be obtained, as it was demonstrated in this work on platinum microelectrodes.
Fil: Arce, Mauricio Damián. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; Argentina
Fil: Bonazza, Horacio. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada E Ingeniería Electroquímica; Argentina
Fil: Fernandez, Jose Luis. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada E Ingeniería Electroquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe; Argentina
description tThe hydrogen electrode reaction (HER) in steady state was described through a model involving mechanistic, mass-transport, and acid-base events. The model can be used to analyze polarization curves at any pH in conditions of high ionic strength and to obtain from these dependences the complete set of kinetic parameters. On the one hand, it involves the Volmer-Heyrovsky-Tafel (VHT) mechanism with H+ and H2(dis) at the electrode surface. On the other hand, the reaction of water dissociation at equilibrium is simultaneously considered as a source of H+ and HO-. The mass-transport by diffusion of H2(dis), H+ and HO- is included. In conditions of high mass-transport rates where kinetics plays an important role, the equations are able to reproduce the typical features that are observed in experimental current-potential curves in neutral and acid solutions (pH < 8). Besides, they can be used to analyze the dependence of the polarization resistance on the H+ concentration over this pH range. From these dependences, the elementary kinetic parameters of the VHT mechanism can be obtained, as it was demonstrated in this work on platinum microelectrodes.
publishDate 2013
dc.date.none.fl_str_mv 2013-09
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/6410
Arce, Mauricio Damián; Bonazza, Horacio; Fernandez, Jose Luis; Kinetic analysis of the hydrogen electrode reaction in unbuffered media. Theory and studies on Pt microelectrodes; Elsevier; Electrochimica Acta; 107; 9-2013; 248-260
0013-4686
url http://hdl.handle.net/11336/6410
identifier_str_mv Arce, Mauricio Damián; Bonazza, Horacio; Fernandez, Jose Luis; Kinetic analysis of the hydrogen electrode reaction in unbuffered media. Theory and studies on Pt microelectrodes; Elsevier; Electrochimica Acta; 107; 9-2013; 248-260
0013-4686
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.electacta.2013.05.135
info:eu-repo/semantics/altIdentifier/doi/
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S001346861301075X
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.000565

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