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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/32776
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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 Técnicas2025-09-29T10:46:19Zoai: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:34982025-09-29 10:46:19.764CONICET 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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1844614504451670016 |
score |
13.070432 |