Effect of Cation Demixing on the Electrochemical Performance of LSCFO Cathodes for SOFCs

Autores
Baque, Laura Cecilia; Soldati, Analía Leticia; Troiani, Horacio Esteban; Serquis, Adriana Cristina
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The commercialization of Solid oxide fuel cells (SOFCs) is still hindered by their cost and long term degradation. One of the most common degradation mechanisms of La1-xSrxFe1-yCoyO3-d (LSCFO) cathodes reported in literature is element demixing. In this work, the degradation of LSCFO cathodes deposited on Ce1-xGdxO2-d electrolytes at 800°C in air for 50 h was investigated by electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). EIS spectra from LSCFO cathodes present two contributions: one at high frequency and another at low frequency. The high frequency contribution remains invariable during the ageing treatment while the low frequency contribution continuously increases. The formation of small segregates was observed after the ageing treatment. Energy dispersive spectroscopy analysis reveals that these segregates were particularly poor in Sr.
Fil: Baque, Laura Cecilia. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Soldati, Analía Leticia. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Troiani, Horacio Esteban. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Serquis, Adriana Cristina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Solid Oxide Fuel Cell
Degradation
Microscopy
Electrochemical Impedance Spectroscopy
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:11336/32776
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/32776
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Effect of Cation Demixing on the Electrochemical Performance of LSCFO Cathodes for SOFCsBaque, Laura CeciliaSoldati, Analía LeticiaTroiani, Horacio EstebanSerquis, Adriana CristinaSolid Oxide Fuel CellDegradationMicroscopyElectrochemical Impedance Spectroscopyhttps://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2The commercialization of Solid oxide fuel cells (SOFCs) is still hindered by their cost and long term degradation. One of the most common degradation mechanisms of La1-xSrxFe1-yCoyO3-d (LSCFO) cathodes reported in literature is element demixing. In this work, the degradation of LSCFO cathodes deposited on Ce1-xGdxO2-d electrolytes at 800°C in air for 50 h was investigated by electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). EIS spectra from LSCFO cathodes present two contributions: one at high frequency and another at low frequency. The high frequency contribution remains invariable during the ageing treatment while the low frequency contribution continuously increases. The formation of small segregates was observed after the ageing treatment. Energy dispersive spectroscopy analysis reveals that these segregates were particularly poor in Sr.Fil: Baque, Laura Cecilia. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Soldati, Analía Leticia. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Troiani, Horacio Esteban. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Serquis, Adriana Cristina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaElectrochemical Society2014-10info: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/11336/32776Soldati, Analía Leticia; Serquis, Adriana Cristina; Troiani, Horacio Esteban; Baque, Laura Cecilia; Effect of Cation Demixing on the Electrochemical Performance of LSCFO Cathodes for SOFCs; Electrochemical Society; ECS Transactions; 64; 2; 10-2014; 11-161938-6737CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1149/06402.0011ecstinfo:eu-repo/semantics/altIdentifier/url/http://ecst.ecsdl.org/content/64/2/11info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:19:41Zoai:ri.conicet.gov.ar:11336/32776instacron: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 12:19:41.679CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Effect of Cation Demixing on the Electrochemical Performance of LSCFO Cathodes for SOFCs
title Effect of Cation Demixing on the Electrochemical Performance of LSCFO Cathodes for SOFCs
spellingShingle Effect of Cation Demixing on the Electrochemical Performance of LSCFO Cathodes for SOFCs
Baque, Laura Cecilia
Solid Oxide Fuel Cell
Degradation
Microscopy
Electrochemical Impedance Spectroscopy
title_short Effect of Cation Demixing on the Electrochemical Performance of LSCFO Cathodes for SOFCs
title_full Effect of Cation Demixing on the Electrochemical Performance of LSCFO Cathodes for SOFCs
title_fullStr Effect of Cation Demixing on the Electrochemical Performance of LSCFO Cathodes for SOFCs
title_full_unstemmed Effect of Cation Demixing on the Electrochemical Performance of LSCFO Cathodes for SOFCs
title_sort Effect of Cation Demixing on the Electrochemical Performance of LSCFO Cathodes for SOFCs
dc.creator.none.fl_str_mv Baque, Laura Cecilia
Soldati, Analía Leticia
Troiani, Horacio Esteban
Serquis, Adriana Cristina
author Baque, Laura Cecilia
author_facet Baque, Laura Cecilia
Soldati, Analía Leticia
Troiani, Horacio Esteban
Serquis, Adriana Cristina
author_role author
author2 Soldati, Analía Leticia
Troiani, Horacio Esteban
Serquis, Adriana Cristina
author2_role author
author
author
dc.subject.none.fl_str_mv Solid Oxide Fuel Cell
Degradation
Microscopy
Electrochemical Impedance Spectroscopy
topic Solid Oxide Fuel Cell
Degradation
Microscopy
Electrochemical Impedance Spectroscopy
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The commercialization of Solid oxide fuel cells (SOFCs) is still hindered by their cost and long term degradation. One of the most common degradation mechanisms of La1-xSrxFe1-yCoyO3-d (LSCFO) cathodes reported in literature is element demixing. In this work, the degradation of LSCFO cathodes deposited on Ce1-xGdxO2-d electrolytes at 800°C in air for 50 h was investigated by electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). EIS spectra from LSCFO cathodes present two contributions: one at high frequency and another at low frequency. The high frequency contribution remains invariable during the ageing treatment while the low frequency contribution continuously increases. The formation of small segregates was observed after the ageing treatment. Energy dispersive spectroscopy analysis reveals that these segregates were particularly poor in Sr.
Fil: Baque, Laura Cecilia. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Soldati, Analía Leticia. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Troiani, Horacio Esteban. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Serquis, Adriana Cristina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description The commercialization of Solid oxide fuel cells (SOFCs) is still hindered by their cost and long term degradation. One of the most common degradation mechanisms of La1-xSrxFe1-yCoyO3-d (LSCFO) cathodes reported in literature is element demixing. In this work, the degradation of LSCFO cathodes deposited on Ce1-xGdxO2-d electrolytes at 800°C in air for 50 h was investigated by electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). EIS spectra from LSCFO cathodes present two contributions: one at high frequency and another at low frequency. The high frequency contribution remains invariable during the ageing treatment while the low frequency contribution continuously increases. The formation of small segregates was observed after the ageing treatment. Energy dispersive spectroscopy analysis reveals that these segregates were particularly poor in Sr.
publishDate 2014
dc.date.none.fl_str_mv 2014-10
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/11336/32776
Soldati, Analía Leticia; Serquis, Adriana Cristina; Troiani, Horacio Esteban; Baque, Laura Cecilia; Effect of Cation Demixing on the Electrochemical Performance of LSCFO Cathodes for SOFCs; Electrochemical Society; ECS Transactions; 64; 2; 10-2014; 11-16
1938-6737
CONICET Digital
CONICET
url http://hdl.handle.net/11336/32776
identifier_str_mv Soldati, Analía Leticia; Serquis, Adriana Cristina; Troiani, Horacio Esteban; Baque, Laura Cecilia; Effect of Cation Demixing on the Electrochemical Performance of LSCFO Cathodes for SOFCs; Electrochemical Society; ECS Transactions; 64; 2; 10-2014; 11-16
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/doi/10.1149/06402.0011ecst
info:eu-repo/semantics/altIdentifier/url/http://ecst.ecsdl.org/content/64/2/11
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 Electrochemical Society
publisher.none.fl_str_mv Electrochemical Society
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 12.982451

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