Rate limiting steps of the porous La0.6Sr0.4Co0.8Fe0.2O3-δ electrode material

Autores
Grunbam, N.; Dessemond, L.; Fouletier, J.; Prado, Fernando Daniel; Mogni, Liliana Verónica; Caneiro, Alberto
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The electrode reaction of porous La0.6Sr0.4Co0.8Fe0.2O3-δ films deposited onto Ce0.9Gd0.1O1.95 (CGO) was investigated by impedance spectroscopy within the temperature and oxygen partial pressure (pO2) ranges of 500 ≤ T ≤ 700 °C and 10- 4 < pO2 < 1 atm, respectively, using Ar and He as gas carriers. The electrochemical impedance spectroscopy (EIS) measurements reveal a high frequency (HF) and a low frequency (LF) regions in the Nyquist plane. The high frequency (HF) region was fitted with a Warburg-type impedance element, and the low frequency (LF) region was reproduced with a resistance in parallel to a constant phase element. Both, the slight dependence of the polarization resistance (RW) and the small variation of the apex frequency (fv) of the HF Warburg-type element, on pO2, suggest that this contribution corresponds to the oxygen diffusion in the bulk of the La0.6Sr0.4Co0.8Fe0.2O3-δ electrode material. The variation of the polarization resistance of the LF region (Rrcpe) with pO2 indicates that as T increases, the limiting step evolves from dissociative oxygen adsorption to oxygen gas diffusion in the pores of the mixed ionic/electronic conductor (MIEC) electrode.
Fil: Grunbam, N.. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Institut Politechnique de Grenoble; Francia
Fil: Dessemond, L.. Institut Politechnique de Grenoble; Francia
Fil: Fouletier, J.. Institut Politechnique de Grenoble; Francia
Fil: Prado, Fernando Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
Fil: Mogni, Liliana Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
Fil: Caneiro, Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
Materia
Cobaltites
Electrode Reaction
Impedance Spectroscopy
Mixed Conductors
Sofc
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/69941
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/69941
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Rate limiting steps of the porous La0.6Sr0.4Co0.8Fe0.2O3-δ electrode materialGrunbam, N.Dessemond, L.Fouletier, J.Prado, Fernando DanielMogni, Liliana VerónicaCaneiro, AlbertoCobaltitesElectrode ReactionImpedance SpectroscopyMixed ConductorsSofchttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The electrode reaction of porous La0.6Sr0.4Co0.8Fe0.2O3-δ films deposited onto Ce0.9Gd0.1O1.95 (CGO) was investigated by impedance spectroscopy within the temperature and oxygen partial pressure (pO2) ranges of 500 ≤ T ≤ 700 °C and 10- 4 < pO2 < 1 atm, respectively, using Ar and He as gas carriers. The electrochemical impedance spectroscopy (EIS) measurements reveal a high frequency (HF) and a low frequency (LF) regions in the Nyquist plane. The high frequency (HF) region was fitted with a Warburg-type impedance element, and the low frequency (LF) region was reproduced with a resistance in parallel to a constant phase element. Both, the slight dependence of the polarization resistance (RW) and the small variation of the apex frequency (fv) of the HF Warburg-type element, on pO2, suggest that this contribution corresponds to the oxygen diffusion in the bulk of the La0.6Sr0.4Co0.8Fe0.2O3-δ electrode material. The variation of the polarization resistance of the LF region (Rrcpe) with pO2 indicates that as T increases, the limiting step evolves from dissociative oxygen adsorption to oxygen gas diffusion in the pores of the mixed ionic/electronic conductor (MIEC) electrode.Fil: Grunbam, N.. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Institut Politechnique de Grenoble; FranciaFil: Dessemond, L.. Institut Politechnique de Grenoble; FranciaFil: Fouletier, J.. Institut Politechnique de Grenoble; FranciaFil: Prado, Fernando Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; ArgentinaFil: Mogni, Liliana Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; ArgentinaFil: Caneiro, Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; ArgentinaElsevier Science2009-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/69941Grunbam, N.; Dessemond, L.; Fouletier, J.; Prado, Fernando Daniel; Mogni, Liliana Verónica; et al.; Rate limiting steps of the porous La0.6Sr0.4Co0.8Fe0.2O3-δ electrode material; Elsevier Science; Solid State Ionics; 180; 28-31; 11-2009; 1448-14520167-2738CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.ssi.2009.09.005info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0167273809003154info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:35:56Zoai:ri.conicet.gov.ar:11336/69941instacron: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:34982025-10-22 11:35:56.829CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Rate limiting steps of the porous La0.6Sr0.4Co0.8Fe0.2O3-δ electrode material
title Rate limiting steps of the porous La0.6Sr0.4Co0.8Fe0.2O3-δ electrode material
spellingShingle Rate limiting steps of the porous La0.6Sr0.4Co0.8Fe0.2O3-δ electrode material
Grunbam, N.
Cobaltites
Electrode Reaction
Impedance Spectroscopy
Mixed Conductors
Sofc
title_short Rate limiting steps of the porous La0.6Sr0.4Co0.8Fe0.2O3-δ electrode material
title_full Rate limiting steps of the porous La0.6Sr0.4Co0.8Fe0.2O3-δ electrode material
title_fullStr Rate limiting steps of the porous La0.6Sr0.4Co0.8Fe0.2O3-δ electrode material
title_full_unstemmed Rate limiting steps of the porous La0.6Sr0.4Co0.8Fe0.2O3-δ electrode material
title_sort Rate limiting steps of the porous La0.6Sr0.4Co0.8Fe0.2O3-δ electrode material
dc.creator.none.fl_str_mv Grunbam, N.
Dessemond, L.
Fouletier, J.
Prado, Fernando Daniel
Mogni, Liliana Verónica
Caneiro, Alberto
author Grunbam, N.
author_facet Grunbam, N.
Dessemond, L.
Fouletier, J.
Prado, Fernando Daniel
Mogni, Liliana Verónica
Caneiro, Alberto
author_role author
author2 Dessemond, L.
Fouletier, J.
Prado, Fernando Daniel
Mogni, Liliana Verónica
Caneiro, Alberto
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Cobaltites
Electrode Reaction
Impedance Spectroscopy
Mixed Conductors
Sofc
topic Cobaltites
Electrode Reaction
Impedance Spectroscopy
Mixed Conductors
Sofc
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The electrode reaction of porous La0.6Sr0.4Co0.8Fe0.2O3-δ films deposited onto Ce0.9Gd0.1O1.95 (CGO) was investigated by impedance spectroscopy within the temperature and oxygen partial pressure (pO2) ranges of 500 ≤ T ≤ 700 °C and 10- 4 < pO2 < 1 atm, respectively, using Ar and He as gas carriers. The electrochemical impedance spectroscopy (EIS) measurements reveal a high frequency (HF) and a low frequency (LF) regions in the Nyquist plane. The high frequency (HF) region was fitted with a Warburg-type impedance element, and the low frequency (LF) region was reproduced with a resistance in parallel to a constant phase element. Both, the slight dependence of the polarization resistance (RW) and the small variation of the apex frequency (fv) of the HF Warburg-type element, on pO2, suggest that this contribution corresponds to the oxygen diffusion in the bulk of the La0.6Sr0.4Co0.8Fe0.2O3-δ electrode material. The variation of the polarization resistance of the LF region (Rrcpe) with pO2 indicates that as T increases, the limiting step evolves from dissociative oxygen adsorption to oxygen gas diffusion in the pores of the mixed ionic/electronic conductor (MIEC) electrode.
Fil: Grunbam, N.. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Institut Politechnique de Grenoble; Francia
Fil: Dessemond, L.. Institut Politechnique de Grenoble; Francia
Fil: Fouletier, J.. Institut Politechnique de Grenoble; Francia
Fil: Prado, Fernando Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
Fil: Mogni, Liliana Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
Fil: Caneiro, Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
description The electrode reaction of porous La0.6Sr0.4Co0.8Fe0.2O3-δ films deposited onto Ce0.9Gd0.1O1.95 (CGO) was investigated by impedance spectroscopy within the temperature and oxygen partial pressure (pO2) ranges of 500 ≤ T ≤ 700 °C and 10- 4 < pO2 < 1 atm, respectively, using Ar and He as gas carriers. The electrochemical impedance spectroscopy (EIS) measurements reveal a high frequency (HF) and a low frequency (LF) regions in the Nyquist plane. The high frequency (HF) region was fitted with a Warburg-type impedance element, and the low frequency (LF) region was reproduced with a resistance in parallel to a constant phase element. Both, the slight dependence of the polarization resistance (RW) and the small variation of the apex frequency (fv) of the HF Warburg-type element, on pO2, suggest that this contribution corresponds to the oxygen diffusion in the bulk of the La0.6Sr0.4Co0.8Fe0.2O3-δ electrode material. The variation of the polarization resistance of the LF region (Rrcpe) with pO2 indicates that as T increases, the limiting step evolves from dissociative oxygen adsorption to oxygen gas diffusion in the pores of the mixed ionic/electronic conductor (MIEC) electrode.
publishDate 2009
dc.date.none.fl_str_mv 2009-11
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/11336/69941
Grunbam, N.; Dessemond, L.; Fouletier, J.; Prado, Fernando Daniel; Mogni, Liliana Verónica; et al.; Rate limiting steps of the porous La0.6Sr0.4Co0.8Fe0.2O3-δ electrode material; Elsevier Science; Solid State Ionics; 180; 28-31; 11-2009; 1448-1452
0167-2738
CONICET Digital
CONICET
url http://hdl.handle.net/11336/69941
identifier_str_mv Grunbam, N.; Dessemond, L.; Fouletier, J.; Prado, Fernando Daniel; Mogni, Liliana Verónica; et al.; Rate limiting steps of the porous La0.6Sr0.4Co0.8Fe0.2O3-δ electrode material; Elsevier Science; Solid State Ionics; 180; 28-31; 11-2009; 1448-1452
0167-2738
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ssi.2009.09.005
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0167273809003154
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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
_version_ 1846781997376077824
score 12.982451

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