Effect of Aging on the Electrochemical Performance of LSM-YSZ Cathodes

Autores
Baque, Laura Cecilia; Jørgensen, Peter Stanley; Zhang, Wei; Hansen, Karin Vels; Søgaard, Martin
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Investigations of degradation mechanisms of solid oxide fuel cells are crucial for achieving a widespread commercialization of the technology. In this work, electrochemical impedance spectroscopy (EIS) was applied for studying the aging effect on LSM-YSZ cathodes exposed to humidified air at 900°C for up to 3000 h. EIS spectra were fitted by a transmission line model for estimating relevant parameters associated with the LSM/YSZ charge transfer reaction and the oxide ion conduction through the YSZ network. For the reference non-aged sample, the ionic conductivity values are the expected ones for YSZ with 1 eV activation energy and no dependency on oxygen partial pressure (pO2), while the charge transfer resistance presents an activation energy of 1.6 eV and is proportional to (pO2)−0.31±0.08. These values agree with those reported in literature, validating the used model. The charge transfer resistance shows no clear tendency with aging time, while the ionic conductivity decreases up to ∼79%. Accordingly, the electrochemically active thickness contracts from 60–135 μm to 45–60 μm. The changes observed in the cathode transport and electrochemical properties are mostly explained by the evolution of the phases present in agreement with results previously reported in the literature.
Fil: Baque, Laura Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación y Desarrollo en Ingeniería de Procesos, Biotecnología y Energías Alternativas; Argentina. Technical University of Denmark. Department of Energy Conversion and Storage; Dinamarca
Fil: Jørgensen, Peter Stanley. Technical University of Denmark. Department of Energy Conversion and Storage; Dinamarca
Fil: Zhang, Wei. Technical University of Denmark. Department of Energy Conversion and Storage; Dinamarca
Fil: Hansen, Karin Vels . Technical University of Denmark. Department of Energy Conversion and Storage; Dinamarca
Fil: Søgaard, Martin. Technical University of Denmark. Department of Energy Conversion and Storage; Dinamarca
Materia
Composite Cathodes
Degradation
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:11336/5711
Acceder
id CONICETDig_2d0cb8484b742e204da8b5526a90e4ab
oai_identifier_str oai:ri.conicet.gov.ar:11336/5711
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Effect of Aging on the Electrochemical Performance of LSM-YSZ CathodesBaque, Laura CeciliaJørgensen, Peter StanleyZhang, WeiHansen, Karin Vels Søgaard, MartinComposite CathodesDegradationSofchttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2Investigations of degradation mechanisms of solid oxide fuel cells are crucial for achieving a widespread commercialization of the technology. In this work, electrochemical impedance spectroscopy (EIS) was applied for studying the aging effect on LSM-YSZ cathodes exposed to humidified air at 900°C for up to 3000 h. EIS spectra were fitted by a transmission line model for estimating relevant parameters associated with the LSM/YSZ charge transfer reaction and the oxide ion conduction through the YSZ network. For the reference non-aged sample, the ionic conductivity values are the expected ones for YSZ with 1 eV activation energy and no dependency on oxygen partial pressure (pO2), while the charge transfer resistance presents an activation energy of 1.6 eV and is proportional to (pO2)−0.31±0.08. These values agree with those reported in literature, validating the used model. The charge transfer resistance shows no clear tendency with aging time, while the ionic conductivity decreases up to ∼79%. Accordingly, the electrochemically active thickness contracts from 60–135 μm to 45–60 μm. The changes observed in the cathode transport and electrochemical properties are mostly explained by the evolution of the phases present in agreement with results previously reported in the literature.Fil: Baque, Laura Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación y Desarrollo en Ingeniería de Procesos, Biotecnología y Energías Alternativas; Argentina. Technical University of Denmark. Department of Energy Conversion and Storage; DinamarcaFil: Jørgensen, Peter Stanley. Technical University of Denmark. Department of Energy Conversion and Storage; DinamarcaFil: Zhang, Wei. Technical University of Denmark. Department of Energy Conversion and Storage; DinamarcaFil: Hansen, Karin Vels . Technical University of Denmark. Department of Energy Conversion and Storage; DinamarcaFil: Søgaard, Martin. Technical University of Denmark. Department of Energy Conversion and Storage; DinamarcaElectrochemical Society2015-06-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/5711Baque, Laura Cecilia; Jørgensen, Peter Stanley; Zhang, Wei; Hansen, Karin Vels ; Søgaard, Martin; Effect of Aging on the Electrochemical Performance of LSM-YSZ Cathodes; Electrochemical Society; Journal of the Electrochemical Society; 162; 9; 12-6-2015; 971-9810013-4651enginfo:eu-repo/semantics/altIdentifier/url/http://jes.ecsdl.org/content/162/9/F971info:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/altIdentifier/doi/10.1149/2.0181509jesinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:41:04Zoai:ri.conicet.gov.ar:11336/5711instacron: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 09:41:04.762CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Effect of Aging on the Electrochemical Performance of LSM-YSZ Cathodes
title Effect of Aging on the Electrochemical Performance of LSM-YSZ Cathodes
spellingShingle Effect of Aging on the Electrochemical Performance of LSM-YSZ Cathodes
Baque, Laura Cecilia
Composite Cathodes
Degradation
Sofc
title_short Effect of Aging on the Electrochemical Performance of LSM-YSZ Cathodes
title_full Effect of Aging on the Electrochemical Performance of LSM-YSZ Cathodes
title_fullStr Effect of Aging on the Electrochemical Performance of LSM-YSZ Cathodes
title_full_unstemmed Effect of Aging on the Electrochemical Performance of LSM-YSZ Cathodes
title_sort Effect of Aging on the Electrochemical Performance of LSM-YSZ Cathodes
dc.creator.none.fl_str_mv Baque, Laura Cecilia
Jørgensen, Peter Stanley
Zhang, Wei
Hansen, Karin Vels
Søgaard, Martin
author Baque, Laura Cecilia
author_facet Baque, Laura Cecilia
Jørgensen, Peter Stanley
Zhang, Wei
Hansen, Karin Vels
Søgaard, Martin
author_role author
author2 Jørgensen, Peter Stanley
Zhang, Wei
Hansen, Karin Vels
Søgaard, Martin
author2_role author
author
author
author
dc.subject.none.fl_str_mv Composite Cathodes
Degradation
Sofc
topic Composite Cathodes
Degradation
Sofc
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Investigations of degradation mechanisms of solid oxide fuel cells are crucial for achieving a widespread commercialization of the technology. In this work, electrochemical impedance spectroscopy (EIS) was applied for studying the aging effect on LSM-YSZ cathodes exposed to humidified air at 900°C for up to 3000 h. EIS spectra were fitted by a transmission line model for estimating relevant parameters associated with the LSM/YSZ charge transfer reaction and the oxide ion conduction through the YSZ network. For the reference non-aged sample, the ionic conductivity values are the expected ones for YSZ with 1 eV activation energy and no dependency on oxygen partial pressure (pO2), while the charge transfer resistance presents an activation energy of 1.6 eV and is proportional to (pO2)−0.31±0.08. These values agree with those reported in literature, validating the used model. The charge transfer resistance shows no clear tendency with aging time, while the ionic conductivity decreases up to ∼79%. Accordingly, the electrochemically active thickness contracts from 60–135 μm to 45–60 μm. The changes observed in the cathode transport and electrochemical properties are mostly explained by the evolution of the phases present in agreement with results previously reported in the literature.
Fil: Baque, Laura Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación y Desarrollo en Ingeniería de Procesos, Biotecnología y Energías Alternativas; Argentina. Technical University of Denmark. Department of Energy Conversion and Storage; Dinamarca
Fil: Jørgensen, Peter Stanley. Technical University of Denmark. Department of Energy Conversion and Storage; Dinamarca
Fil: Zhang, Wei. Technical University of Denmark. Department of Energy Conversion and Storage; Dinamarca
Fil: Hansen, Karin Vels . Technical University of Denmark. Department of Energy Conversion and Storage; Dinamarca
Fil: Søgaard, Martin. Technical University of Denmark. Department of Energy Conversion and Storage; Dinamarca
description Investigations of degradation mechanisms of solid oxide fuel cells are crucial for achieving a widespread commercialization of the technology. In this work, electrochemical impedance spectroscopy (EIS) was applied for studying the aging effect on LSM-YSZ cathodes exposed to humidified air at 900°C for up to 3000 h. EIS spectra were fitted by a transmission line model for estimating relevant parameters associated with the LSM/YSZ charge transfer reaction and the oxide ion conduction through the YSZ network. For the reference non-aged sample, the ionic conductivity values are the expected ones for YSZ with 1 eV activation energy and no dependency on oxygen partial pressure (pO2), while the charge transfer resistance presents an activation energy of 1.6 eV and is proportional to (pO2)−0.31±0.08. These values agree with those reported in literature, validating the used model. The charge transfer resistance shows no clear tendency with aging time, while the ionic conductivity decreases up to ∼79%. Accordingly, the electrochemically active thickness contracts from 60–135 μm to 45–60 μm. The changes observed in the cathode transport and electrochemical properties are mostly explained by the evolution of the phases present in agreement with results previously reported in the literature.
publishDate 2015
dc.date.none.fl_str_mv 2015-06-12
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/11336/5711
Baque, Laura Cecilia; Jørgensen, Peter Stanley; Zhang, Wei; Hansen, Karin Vels ; Søgaard, Martin; Effect of Aging on the Electrochemical Performance of LSM-YSZ Cathodes; Electrochemical Society; Journal of the Electrochemical Society; 162; 9; 12-6-2015; 971-981
0013-4651
url http://hdl.handle.net/11336/5711
identifier_str_mv Baque, Laura Cecilia; Jørgensen, Peter Stanley; Zhang, Wei; Hansen, Karin Vels ; Søgaard, Martin; Effect of Aging on the Electrochemical Performance of LSM-YSZ Cathodes; Electrochemical Society; Journal of the Electrochemical Society; 162; 9; 12-6-2015; 971-981
0013-4651
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://jes.ecsdl.org/content/162/9/F971
info:eu-repo/semantics/altIdentifier/doi/
info:eu-repo/semantics/altIdentifier/doi/10.1149/2.0181509jes
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
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
_version_ 1844613298664767488
score 13.070432

Publicaciones similares