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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/69941
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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 Técnicas2025-09-29T10:06:08Zoai: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:34982025-09-29 10:06:08.777CONICET 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_ |
1844613906715115520 |
score |
13.070432 |