Kinetics and mechanism of PbSO4 electroformation on Pb electrodes in H2SO4 aqueous solutions

Autores: Varela, Francisco Eduardo; Vela, María Elena; Vilche, Jorge Roberto; Arvia, Alejandro Jorge
Año de publicación: 1993
Idioma: inglés
Tipo de recurso: artículo
Estado: versión publicada
Descripción: The electrochemical processes related to the passivation of Pb in 5 M H₂SO₄ at 25°C, have been investigated combining a rotating ring-disk electrode, linear potential sweep voltammetry and potentiostatic pulse techniques complemented with scanning electron microscopic imaging. The kinetics of PbSO₄ anodic layer growth can be explained through the initial formation of a barrier layer acting as an ionic conductor, and the transference of Pb²⁺ cations from the substrate the conducting layer yielding Pb²⁺ ion in the solution. These ions further contribute to passivation through the precipitation of a PbSO₄ passivating layer.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Materia: Ciencias Exactas
Química
Lead/sulphuric acid system
Lead electro-oxidation
Nucleation and growth of lead sulphate
Lead passivationlead soluble species
Nivel de accesibilidad: acceso abierto
Condiciones de uso: http://creativecommons.org/licenses/by/4.0/
Repositorio
Institución: Universidad Nacional de La Plata
OAI Identificador: oai:sedici.unlp.edu.ar:10915/121653

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spelling	Kinetics and mechanism of PbSO<sub>4</sub> electroformation on Pb electrodes in H<sub>2</sub>SO<sub>4</sub> aqueous solutionsVarela, Francisco EduardoVela, María ElenaVilche, Jorge RobertoArvia, Alejandro JorgeCiencias ExactasQuímicaLead/sulphuric acid systemLead electro-oxidationNucleation and growth of lead sulphateLead passivationlead soluble speciesThe electrochemical processes related to the passivation of Pb in 5 M H<sub>2</sub>SO<sub>4</sub> at 25°C, have been investigated combining a rotating ring-disk electrode, linear potential sweep voltammetry and potentiostatic pulse techniques complemented with scanning electron microscopic imaging. The kinetics of PbSO<sub>4</sub> anodic layer growth can be explained through the initial formation of a barrier layer acting as an ionic conductor, and the transference of Pb<sup>2+</sup> cations from the substrate the conducting layer yielding Pb<sup>2+</sup> ion in the solution. These ions further contribute to passivation through the precipitation of a PbSO<sub>4</sub> passivating layer.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas1993info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1513-1520http://sedici.unlp.edu.ar/handle/10915/121653enginfo:eu-repo/semantics/altIdentifier/issn/0013-4686info:eu-repo/semantics/altIdentifier/doi/10.1016/0013-4686(93)80283-6info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:28:54Zoai:sedici.unlp.edu.ar:10915/121653Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:28:54.419SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv	Kinetics and mechanism of PbSO<sub>4</sub> electroformation on Pb electrodes in H<sub>2</sub>SO<sub>4</sub> aqueous solutions
title	Kinetics and mechanism of PbSO<sub>4</sub> electroformation on Pb electrodes in H<sub>2</sub>SO<sub>4</sub> aqueous solutions
spellingShingle	Kinetics and mechanism of PbSO<sub>4</sub> electroformation on Pb electrodes in H<sub>2</sub>SO<sub>4</sub> aqueous solutions Varela, Francisco Eduardo Ciencias Exactas Química Lead/sulphuric acid system Lead electro-oxidation Nucleation and growth of lead sulphate Lead passivationlead soluble species
title_short	Kinetics and mechanism of PbSO<sub>4</sub> electroformation on Pb electrodes in H<sub>2</sub>SO<sub>4</sub> aqueous solutions
title_full	Kinetics and mechanism of PbSO<sub>4</sub> electroformation on Pb electrodes in H<sub>2</sub>SO<sub>4</sub> aqueous solutions
title_fullStr	Kinetics and mechanism of PbSO<sub>4</sub> electroformation on Pb electrodes in H<sub>2</sub>SO<sub>4</sub> aqueous solutions
title_full_unstemmed	Kinetics and mechanism of PbSO<sub>4</sub> electroformation on Pb electrodes in H<sub>2</sub>SO<sub>4</sub> aqueous solutions
title_sort	Kinetics and mechanism of PbSO<sub>4</sub> electroformation on Pb electrodes in H<sub>2</sub>SO<sub>4</sub> aqueous solutions
dc.creator.none.fl_str_mv	Varela, Francisco Eduardo Vela, María Elena Vilche, Jorge Roberto Arvia, Alejandro Jorge
author	Varela, Francisco Eduardo
author_facet	Varela, Francisco Eduardo Vela, María Elena Vilche, Jorge Roberto Arvia, Alejandro Jorge
author_role	author
author2	Vela, María Elena Vilche, Jorge Roberto Arvia, Alejandro Jorge
author2_role	author author author
dc.subject.none.fl_str_mv	Ciencias Exactas Química Lead/sulphuric acid system Lead electro-oxidation Nucleation and growth of lead sulphate Lead passivationlead soluble species
topic	Ciencias Exactas Química Lead/sulphuric acid system Lead electro-oxidation Nucleation and growth of lead sulphate Lead passivationlead soluble species
dc.description.none.fl_txt_mv	The electrochemical processes related to the passivation of Pb in 5 M H<sub>2</sub>SO<sub>4</sub> at 25°C, have been investigated combining a rotating ring-disk electrode, linear potential sweep voltammetry and potentiostatic pulse techniques complemented with scanning electron microscopic imaging. The kinetics of PbSO<sub>4</sub> anodic layer growth can be explained through the initial formation of a barrier layer acting as an ionic conductor, and the transference of Pb<sup>2+</sup> cations from the substrate the conducting layer yielding Pb<sup>2+</sup> ion in the solution. These ions further contribute to passivation through the precipitation of a PbSO<sub>4</sub> passivating layer. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
description	The electrochemical processes related to the passivation of Pb in 5 M H<sub>2</sub>SO<sub>4</sub> at 25°C, have been investigated combining a rotating ring-disk electrode, linear potential sweep voltammetry and potentiostatic pulse techniques complemented with scanning electron microscopic imaging. The kinetics of PbSO<sub>4</sub> anodic layer growth can be explained through the initial formation of a barrier layer acting as an ionic conductor, and the transference of Pb<sup>2+</sup> cations from the substrate the conducting layer yielding Pb<sup>2+</sup> ion in the solution. These ions further contribute to passivation through the precipitation of a PbSO<sub>4</sub> passivating layer.
publishDate	1993
dc.date.none.fl_str_mv	1993
dc.type.none.fl_str_mv	info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo 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://sedici.unlp.edu.ar/handle/10915/121653
url	http://sedici.unlp.edu.ar/handle/10915/121653
dc.language.none.fl_str_mv	eng
language	eng
dc.relation.none.fl_str_mv	info:eu-repo/semantics/altIdentifier/issn/0013-4686 info:eu-repo/semantics/altIdentifier/doi/10.1016/0013-4686(93)80283-6
dc.rights.none.fl_str_mv	info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv	openAccess
rights_invalid_str_mv	http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv	application/pdf 1513-1520
dc.source.none.fl_str_mv	reponame:SEDICI (UNLP) instname:Universidad Nacional de La Plata instacron:UNLP
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collection	SEDICI (UNLP)
instname_str	Universidad Nacional de La Plata
instacron_str	UNLP
institution	UNLP
repository.name.fl_str_mv	SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv	alira@sedici.unlp.edu.ar
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Kinetics and mechanism of PbSO<sub>4</sub> electroformation on Pb electrodes in H<sub>2</sub>SO<sub>4</sub> aqueous solutions

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