Sr0.90Ba0.10Co0.95Ti0.05O3-δ cathode as an improved electrode for IT-SOFCs

The novel perovskite Sr0.90Ba0.10Co0.95Ti0.05O3-δ has been designed as cathode material to be used in intermediate-temperature solid oxide fuel cells (IT-SOFC). To enlarge the unit-cell size and enhance oxygen diffusion, Sr atoms have been partially substituted by a 10 % of Ba. This new compound was...

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Autores: Chivite Lacaba, Mónica, Prado-Gonjal, Jesús, Alonso, J.A., Fernández-Díaz, M.T., Cascos, Vanessa
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2024
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/385498
Acceso en línea:http://hdl.handle.net/10261/385498
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85202851376&doi=10.1016%2fj.ceramint.2024.08.403&partnerID=40&md5=bd9c0786cfebbee2dcfc9ce40bcbd83b
Access Level:acceso abierto
Palabra clave:Cathode materials
IT-SOFC
MIECs
Neutron diffraction
Perovskite
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spelling Sr0.90Ba0.10Co0.95Ti0.05O3-δ cathode as an improved electrode for IT-SOFCsChivite Lacaba, MónicaPrado-Gonjal, JesúsAlonso, J.A.Fernández-Díaz, M.T.Cascos, VanessaCathode materialsIT-SOFCMIECsNeutron diffractionPerovskiteThe novel perovskite Sr0.90Ba0.10Co0.95Ti0.05O3-δ has been designed as cathode material to be used in intermediate-temperature solid oxide fuel cells (IT-SOFC). To enlarge the unit-cell size and enhance oxygen diffusion, Sr atoms have been partially substituted by a 10 % of Ba. This new compound was characterized through X Ray Diffraction (XRD) unveiling a tetragonal phase at RT. An in situ Neutron Powder Diffraction (NPD) study between RT and 800 °C showed a transition to a cubic perovskite at 400 °C, which was also noticeable in the thermogravimetric analysis (TGA) and dilatometric analysis. Adequate chemical and mechanical compatibility were achieved with the components of the cell. Electrical conductivity peaked at 400 °C, with values over 200 S cm−1, where it changed its behavior from semiconductor-like to insulator. Finally, polarization resistances as low as 0.062 Ω cm−2 were obtained for the working temperature of the cell in a symmetric cell, associated with the excellent power densities of 564 and 752 mW cm−2 obtained at 850 °C using pure H2 as fuel for the conventional test fuel cell and in a Pd-infiltrated one. © 2024 Elsevier Ltd and Techna Group S.r.l.JAA thanks the financial support of the MCIN for funding the project number: PID2021-122477OB-I00. We acknowledge the Institut Laue-Langevin (ILL) for making all facilities available. VC and JPG thank to the MCIN (MCIN/AEI/10.13039/501100011033) for granting the project PID2020-112848RB-C21. VC and JPG appreciate the support of Community of Madrid-Universidad Complutense de Madrid for the concession of the project PR27/21-002 and for granting the "Atraccion de Talento program" fellowship, 2019- T2/IND-13483.Peer reviewedElsevierConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/385498https://www.scopus.com/inward/record.uri?eid=2-s2.0-85202851376&doi=10.1016%2fj.ceramint.2024.08.403&partnerID=40&md5=bd9c0786cfebbee2dcfc9ce40bcbd83breponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCeramics Internationalhttps://doi.org/10.1016/j.ceramint.2024.08.403Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3854982026-05-22T06:33:51Z
dc.title.none.fl_str_mv Sr0.90Ba0.10Co0.95Ti0.05O3-δ cathode as an improved electrode for IT-SOFCs
title Sr0.90Ba0.10Co0.95Ti0.05O3-δ cathode as an improved electrode for IT-SOFCs
spellingShingle Sr0.90Ba0.10Co0.95Ti0.05O3-δ cathode as an improved electrode for IT-SOFCs
Chivite Lacaba, Mónica
Cathode materials
IT-SOFC
MIECs
Neutron diffraction
Perovskite
title_short Sr0.90Ba0.10Co0.95Ti0.05O3-δ cathode as an improved electrode for IT-SOFCs
title_full Sr0.90Ba0.10Co0.95Ti0.05O3-δ cathode as an improved electrode for IT-SOFCs
title_fullStr Sr0.90Ba0.10Co0.95Ti0.05O3-δ cathode as an improved electrode for IT-SOFCs
title_full_unstemmed Sr0.90Ba0.10Co0.95Ti0.05O3-δ cathode as an improved electrode for IT-SOFCs
title_sort Sr0.90Ba0.10Co0.95Ti0.05O3-δ cathode as an improved electrode for IT-SOFCs
dc.creator.none.fl_str_mv Chivite Lacaba, Mónica
Prado-Gonjal, Jesús
Alonso, J.A.
Fernández-Díaz, M.T.
Cascos, Vanessa
author Chivite Lacaba, Mónica
author_facet Chivite Lacaba, Mónica
Prado-Gonjal, Jesús
Alonso, J.A.
Fernández-Díaz, M.T.
Cascos, Vanessa
author_role author
author2 Prado-Gonjal, Jesús
Alonso, J.A.
Fernández-Díaz, M.T.
Cascos, Vanessa
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Cathode materials
IT-SOFC
MIECs
Neutron diffraction
Perovskite
topic Cathode materials
IT-SOFC
MIECs
Neutron diffraction
Perovskite
description The novel perovskite Sr0.90Ba0.10Co0.95Ti0.05O3-δ has been designed as cathode material to be used in intermediate-temperature solid oxide fuel cells (IT-SOFC). To enlarge the unit-cell size and enhance oxygen diffusion, Sr atoms have been partially substituted by a 10 % of Ba. This new compound was characterized through X Ray Diffraction (XRD) unveiling a tetragonal phase at RT. An in situ Neutron Powder Diffraction (NPD) study between RT and 800 °C showed a transition to a cubic perovskite at 400 °C, which was also noticeable in the thermogravimetric analysis (TGA) and dilatometric analysis. Adequate chemical and mechanical compatibility were achieved with the components of the cell. Electrical conductivity peaked at 400 °C, with values over 200 S cm−1, where it changed its behavior from semiconductor-like to insulator. Finally, polarization resistances as low as 0.062 Ω cm−2 were obtained for the working temperature of the cell in a symmetric cell, associated with the excellent power densities of 564 and 752 mW cm−2 obtained at 850 °C using pure H2 as fuel for the conventional test fuel cell and in a Pd-infiltrated one. © 2024 Elsevier Ltd and Techna Group S.r.l.
publishDate 2024
dc.date.none.fl_str_mv 2024
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/385498
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85202851376&doi=10.1016%2fj.ceramint.2024.08.403&partnerID=40&md5=bd9c0786cfebbee2dcfc9ce40bcbd83b
url http://hdl.handle.net/10261/385498
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85202851376&doi=10.1016%2fj.ceramint.2024.08.403&partnerID=40&md5=bd9c0786cfebbee2dcfc9ce40bcbd83b
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Ceramics International
https://doi.org/10.1016/j.ceramint.2024.08.403
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.81155

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