Study of the rate limiting steps and degradation of a GDC impregnated La0.6Sr0.4Co0.8Fe0.2O3-δ cathode

Autores
Ascolani Yael, Julian Esteban; Montenegro Hernandez, Alejandra; Troiani, Horacio Esteban; Mogni, Liliana Verónica; Caneiro, Alberto
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this work, a Solid Oxide Fuel Cell (SOFC) cathode surface modification by nanoparticle impregnation was carried out. La0.6Sr0.4Co0.8Fe0.2O3-δ (LSCF) ceramic cathodes impregnated with Ce0.8Gd0.2O3-δ (GDC) nanoparticles were characterized with scanning (SEM) and transmission (TEM) electron microscopy. The electrochemical response as a function of temperature, oxygen partial pressure (pO2) (10-4 < pO2< 1 atm) and time was evaluated by electrochemical impedance spectroscopy (EIS). We obtained reproducible and homogeneous impregnations, which reduce the total cathode's polarization resistance more than 20% in the temperature range between 400°C and 800°C and during 500 h at 700°C. The impregnated cathode was found to be electrochemically limited by the same processes as the nonimpregnated cathode, namely gas diffusion, ion bulk diffusion and dissociative adsorption. The impregnation produced a reduction of more than 20% of the oxygen surface resistance; such difference remained stable through 500h of continuous operation at 700°C.
Fil: Ascolani Yael, Julian Esteban. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Montenegro Hernandez, Alejandra. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Troiani, Horacio Esteban. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Mogni, Liliana Verónica. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Caneiro, Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Materia
SOFC
cathode
LSCF
impregnation
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:11336/126004
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/126004
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Study of the rate limiting steps and degradation of a GDC impregnated La0.6Sr0.4Co0.8Fe0.2O3-δ cathodeAscolani Yael, Julian EstebanMontenegro Hernandez, AlejandraTroiani, Horacio EstebanMogni, Liliana VerónicaCaneiro, AlbertoSOFCcathodeLSCFimpregnationhttps://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2In this work, a Solid Oxide Fuel Cell (SOFC) cathode surface modification by nanoparticle impregnation was carried out. La0.6Sr0.4Co0.8Fe0.2O3-δ (LSCF) ceramic cathodes impregnated with Ce0.8Gd0.2O3-δ (GDC) nanoparticles were characterized with scanning (SEM) and transmission (TEM) electron microscopy. The electrochemical response as a function of temperature, oxygen partial pressure (pO2) (10-4 < pO2< 1 atm) and time was evaluated by electrochemical impedance spectroscopy (EIS). We obtained reproducible and homogeneous impregnations, which reduce the total cathode's polarization resistance more than 20% in the temperature range between 400°C and 800°C and during 500 h at 700°C. The impregnated cathode was found to be electrochemically limited by the same processes as the nonimpregnated cathode, namely gas diffusion, ion bulk diffusion and dissociative adsorption. The impregnation produced a reduction of more than 20% of the oxygen surface resistance; such difference remained stable through 500h of continuous operation at 700°C.Fil: Ascolani Yael, Julian Esteban. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; ArgentinaFil: Montenegro Hernandez, Alejandra. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaFil: Troiani, Horacio Esteban. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaFil: Mogni, Liliana Verónica. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaFil: Caneiro, Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaIOP Publishing2017-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/126004Ascolani Yael, Julian Esteban; Montenegro Hernandez, Alejandra; Troiani, Horacio Esteban; Mogni, Liliana Verónica; Caneiro, Alberto; Study of the rate limiting steps and degradation of a GDC impregnated La0.6Sr0.4Co0.8Fe0.2O3-δ cathode; IOP Publishing; ECS Transactions; 78; 1; 5-2017; 795-8051938-6737CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://ecst.ecsdl.org/lookup/doi/10.1149/07801.0795ecstinfo:eu-repo/semantics/altIdentifier/doi/10.1149/07801.0795ecstinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:33:22Zoai:ri.conicet.gov.ar:11336/126004instacron: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 09:33:23.127CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Study of the rate limiting steps and degradation of a GDC impregnated La0.6Sr0.4Co0.8Fe0.2O3-δ cathode
title Study of the rate limiting steps and degradation of a GDC impregnated La0.6Sr0.4Co0.8Fe0.2O3-δ cathode
spellingShingle Study of the rate limiting steps and degradation of a GDC impregnated La0.6Sr0.4Co0.8Fe0.2O3-δ cathode
Ascolani Yael, Julian Esteban
SOFC
cathode
LSCF
impregnation
title_short Study of the rate limiting steps and degradation of a GDC impregnated La0.6Sr0.4Co0.8Fe0.2O3-δ cathode
title_full Study of the rate limiting steps and degradation of a GDC impregnated La0.6Sr0.4Co0.8Fe0.2O3-δ cathode
title_fullStr Study of the rate limiting steps and degradation of a GDC impregnated La0.6Sr0.4Co0.8Fe0.2O3-δ cathode
title_full_unstemmed Study of the rate limiting steps and degradation of a GDC impregnated La0.6Sr0.4Co0.8Fe0.2O3-δ cathode
title_sort Study of the rate limiting steps and degradation of a GDC impregnated La0.6Sr0.4Co0.8Fe0.2O3-δ cathode
dc.creator.none.fl_str_mv Ascolani Yael, Julian Esteban
Montenegro Hernandez, Alejandra
Troiani, Horacio Esteban
Mogni, Liliana Verónica
Caneiro, Alberto
author Ascolani Yael, Julian Esteban
author_facet Ascolani Yael, Julian Esteban
Montenegro Hernandez, Alejandra
Troiani, Horacio Esteban
Mogni, Liliana Verónica
Caneiro, Alberto
author_role author
author2 Montenegro Hernandez, Alejandra
Troiani, Horacio Esteban
Mogni, Liliana Verónica
Caneiro, Alberto
author2_role author
author
author
author
dc.subject.none.fl_str_mv SOFC
cathode
LSCF
impregnation
topic SOFC
cathode
LSCF
impregnation
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv In this work, a Solid Oxide Fuel Cell (SOFC) cathode surface modification by nanoparticle impregnation was carried out. La0.6Sr0.4Co0.8Fe0.2O3-δ (LSCF) ceramic cathodes impregnated with Ce0.8Gd0.2O3-δ (GDC) nanoparticles were characterized with scanning (SEM) and transmission (TEM) electron microscopy. The electrochemical response as a function of temperature, oxygen partial pressure (pO2) (10-4 < pO2< 1 atm) and time was evaluated by electrochemical impedance spectroscopy (EIS). We obtained reproducible and homogeneous impregnations, which reduce the total cathode's polarization resistance more than 20% in the temperature range between 400°C and 800°C and during 500 h at 700°C. The impregnated cathode was found to be electrochemically limited by the same processes as the nonimpregnated cathode, namely gas diffusion, ion bulk diffusion and dissociative adsorption. The impregnation produced a reduction of more than 20% of the oxygen surface resistance; such difference remained stable through 500h of continuous operation at 700°C.
Fil: Ascolani Yael, Julian Esteban. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Montenegro Hernandez, Alejandra. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Troiani, Horacio Esteban. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Mogni, Liliana Verónica. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Caneiro, Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
description In this work, a Solid Oxide Fuel Cell (SOFC) cathode surface modification by nanoparticle impregnation was carried out. La0.6Sr0.4Co0.8Fe0.2O3-δ (LSCF) ceramic cathodes impregnated with Ce0.8Gd0.2O3-δ (GDC) nanoparticles were characterized with scanning (SEM) and transmission (TEM) electron microscopy. The electrochemical response as a function of temperature, oxygen partial pressure (pO2) (10-4 < pO2< 1 atm) and time was evaluated by electrochemical impedance spectroscopy (EIS). We obtained reproducible and homogeneous impregnations, which reduce the total cathode's polarization resistance more than 20% in the temperature range between 400°C and 800°C and during 500 h at 700°C. The impregnated cathode was found to be electrochemically limited by the same processes as the nonimpregnated cathode, namely gas diffusion, ion bulk diffusion and dissociative adsorption. The impregnation produced a reduction of more than 20% of the oxygen surface resistance; such difference remained stable through 500h of continuous operation at 700°C.
publishDate 2017
dc.date.none.fl_str_mv 2017-05
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/11336/126004
Ascolani Yael, Julian Esteban; Montenegro Hernandez, Alejandra; Troiani, Horacio Esteban; Mogni, Liliana Verónica; Caneiro, Alberto; Study of the rate limiting steps and degradation of a GDC impregnated La0.6Sr0.4Co0.8Fe0.2O3-δ cathode; IOP Publishing; ECS Transactions; 78; 1; 5-2017; 795-805
1938-6737
CONICET Digital
CONICET
url http://hdl.handle.net/11336/126004
identifier_str_mv Ascolani Yael, Julian Esteban; Montenegro Hernandez, Alejandra; Troiani, Horacio Esteban; Mogni, Liliana Verónica; Caneiro, Alberto; Study of the rate limiting steps and degradation of a GDC impregnated La0.6Sr0.4Co0.8Fe0.2O3-δ cathode; IOP Publishing; ECS Transactions; 78; 1; 5-2017; 795-805
1938-6737
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://ecst.ecsdl.org/lookup/doi/10.1149/07801.0795ecst
info:eu-repo/semantics/altIdentifier/doi/10.1149/07801.0795ecst
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
application/pdf
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
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 13.070432

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