The electrochemical behaviour of polycrystalline nickel electrodes in different carbonate-bicarbonate ion-containing solutions

Autores
Bohé, A. E.; Vilche, Jorge Roberto; Arvia, Alejandro Jorge
Año de publicación
1990
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The dissolution and passivation of polycrystalline nickel in carbonate-bicarbonate ion-containing solutions covering wide ranges of pH and electrolyte concentration were investigated by employing voltammetric, galvanostatic and potentiostatic transient techniques. Results obtained with a rotating disc electrode allow the competing reactions related to the active-passive transition to be distinguished through the influence of the potential sweep rate and the rotation speed on the electrochemical behaviour of the system at fixed concentrations of either carbonate or bicarbonate ion. The first oxidation level of nickel corresponds mainly to Ni(OH)2 formation, the chemical dissolution of the surface layer and the precipitation of NiCO3 and Ni(OH)2. The partial removal of the prepassive layer is predominantly assisted by both the bicarbonate ion concentration and the electrode rotation. In the presence of chloride ions the formation of soluble Ni(II) species and NiCo3 in the potential range of the first oxidation level appears to be enhanced. This effect can be interpreted by taking into account competitive adsorption processes at the base metal between Cl− and OH− ions.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Materia
Química
Ciencias Exactas
polycrystalline nickel
electrolyte concentration
pH
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/139854
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/139854
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling The electrochemical behaviour of polycrystalline nickel electrodes in different carbonate-bicarbonate ion-containing solutionsBohé, A. E.Vilche, Jorge RobertoArvia, Alejandro JorgeQuímicaCiencias Exactaspolycrystalline nickelelectrolyte concentrationpHThe dissolution and passivation of polycrystalline nickel in carbonate-bicarbonate ion-containing solutions covering wide ranges of pH and electrolyte concentration were investigated by employing voltammetric, galvanostatic and potentiostatic transient techniques. Results obtained with a rotating disc electrode allow the competing reactions related to the active-passive transition to be distinguished through the influence of the potential sweep rate and the rotation speed on the electrochemical behaviour of the system at fixed concentrations of either carbonate or bicarbonate ion. The first oxidation level of nickel corresponds mainly to Ni(OH)2 formation, the chemical dissolution of the surface layer and the precipitation of NiCO3 and Ni(OH)2. The partial removal of the prepassive layer is predominantly assisted by both the bicarbonate ion concentration and the electrode rotation. In the presence of chloride ions the formation of soluble Ni(II) species and NiCo3 in the potential range of the first oxidation level appears to be enhanced. This effect can be interpreted by taking into account competitive adsorption processes at the base metal between Cl− and OH− ions.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas1990info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf418-426http://sedici.unlp.edu.ar/handle/10915/139854enginfo:eu-repo/semantics/altIdentifier/issn/0021-891xinfo:eu-repo/semantics/altIdentifier/issn/1572-8838info:eu-repo/semantics/altIdentifier/doi/10.1007/bf01076050info: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:UNLP2025-10-22T17:13:01Zoai:sedici.unlp.edu.ar:10915/139854Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 17:13:01.538SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv The electrochemical behaviour of polycrystalline nickel electrodes in different carbonate-bicarbonate ion-containing solutions
title The electrochemical behaviour of polycrystalline nickel electrodes in different carbonate-bicarbonate ion-containing solutions
spellingShingle The electrochemical behaviour of polycrystalline nickel electrodes in different carbonate-bicarbonate ion-containing solutions
Bohé, A. E.
Química
Ciencias Exactas
polycrystalline nickel
electrolyte concentration
pH
title_short The electrochemical behaviour of polycrystalline nickel electrodes in different carbonate-bicarbonate ion-containing solutions
title_full The electrochemical behaviour of polycrystalline nickel electrodes in different carbonate-bicarbonate ion-containing solutions
title_fullStr The electrochemical behaviour of polycrystalline nickel electrodes in different carbonate-bicarbonate ion-containing solutions
title_full_unstemmed The electrochemical behaviour of polycrystalline nickel electrodes in different carbonate-bicarbonate ion-containing solutions
title_sort The electrochemical behaviour of polycrystalline nickel electrodes in different carbonate-bicarbonate ion-containing solutions
dc.creator.none.fl_str_mv Bohé, A. E.
Vilche, Jorge Roberto
Arvia, Alejandro Jorge
author Bohé, A. E.
author_facet Bohé, A. E.
Vilche, Jorge Roberto
Arvia, Alejandro Jorge
author_role author
author2 Vilche, Jorge Roberto
Arvia, Alejandro Jorge
author2_role author
author
dc.subject.none.fl_str_mv Química
Ciencias Exactas
polycrystalline nickel
electrolyte concentration
pH
topic Química
Ciencias Exactas
polycrystalline nickel
electrolyte concentration
pH
dc.description.none.fl_txt_mv The dissolution and passivation of polycrystalline nickel in carbonate-bicarbonate ion-containing solutions covering wide ranges of pH and electrolyte concentration were investigated by employing voltammetric, galvanostatic and potentiostatic transient techniques. Results obtained with a rotating disc electrode allow the competing reactions related to the active-passive transition to be distinguished through the influence of the potential sweep rate and the rotation speed on the electrochemical behaviour of the system at fixed concentrations of either carbonate or bicarbonate ion. The first oxidation level of nickel corresponds mainly to Ni(OH)2 formation, the chemical dissolution of the surface layer and the precipitation of NiCO3 and Ni(OH)2. The partial removal of the prepassive layer is predominantly assisted by both the bicarbonate ion concentration and the electrode rotation. In the presence of chloride ions the formation of soluble Ni(II) species and NiCo3 in the potential range of the first oxidation level appears to be enhanced. This effect can be interpreted by taking into account competitive adsorption processes at the base metal between Cl− and OH− ions.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
description The dissolution and passivation of polycrystalline nickel in carbonate-bicarbonate ion-containing solutions covering wide ranges of pH and electrolyte concentration were investigated by employing voltammetric, galvanostatic and potentiostatic transient techniques. Results obtained with a rotating disc electrode allow the competing reactions related to the active-passive transition to be distinguished through the influence of the potential sweep rate and the rotation speed on the electrochemical behaviour of the system at fixed concentrations of either carbonate or bicarbonate ion. The first oxidation level of nickel corresponds mainly to Ni(OH)2 formation, the chemical dissolution of the surface layer and the precipitation of NiCO3 and Ni(OH)2. The partial removal of the prepassive layer is predominantly assisted by both the bicarbonate ion concentration and the electrode rotation. In the presence of chloride ions the formation of soluble Ni(II) species and NiCo3 in the potential range of the first oxidation level appears to be enhanced. This effect can be interpreted by taking into account competitive adsorption processes at the base metal between Cl− and OH− ions.
publishDate 1990
dc.date.none.fl_str_mv 1990
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/10915/139854
url http://sedici.unlp.edu.ar/handle/10915/139854
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0021-891x
info:eu-repo/semantics/altIdentifier/issn/1572-8838
info:eu-repo/semantics/altIdentifier/doi/10.1007/bf01076050
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
418-426
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
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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score 12.982451

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