Optimising anode supported BaZr1-xYxO3-¿ electrolytes for solid oxide fuel cells: Microstructure, phase evolution and residual stresses analysis

Yttrium-doped BaZrO3 is a promising electrolyte for intermediate-temperature protonic ceramic fuel cells. In the anode-supported configuration, a slurry containing the electrolyte is deposited on the surface of a calcined porous anode and sintered. Differences in sintering behaviour and thermal expa...

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Detalles Bibliográficos
Autores: Fernández-Muñoz, Sol, Alba, María D., Ramírez Rico, Joaquín., Chacartegui, Ricardo
Tipo de recurso: artículo
Estado:Versión publicada
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:10261/364965
Acceso en línea:http://hdl.handle.net/10261/364965
Access Level:acceso abierto
Palabra clave:Fuel-cell
Electrolyte
Residual stress
Sintering
Proton conductors
fuels
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spelling Optimising anode supported BaZr1-xYxO3-¿ electrolytes for solid oxide fuel cells: Microstructure, phase evolution and residual stresses analysisFernández-Muñoz, SolAlba, María D.Ramírez Rico, Joaquín.Chacartegui, RicardoFuel-cellElectrolyteResidual stressSinteringProton conductorsfuelsYttrium-doped BaZrO3 is a promising electrolyte for intermediate-temperature protonic ceramic fuel cells. In the anode-supported configuration, a slurry containing the electrolyte is deposited on the surface of a calcined porous anode and sintered. Differences in sintering behaviour and thermal expansion coefficients for the anode and electrolyte result in elastic residual stresses that can impact the long-term stability of the cell during cyclic operation. Half-cells using BaZr0.8Y0.2O3-¿ as the electrolyte were fabricated using the solid-state reaction sintering method under various sintering conditions. Comprehensive microstructure and residual stress analyses as a function of processing parameters were performed using two-dimensional X-ray diffraction, Rietveld refinement, and scanning electron microscopy, before and after the half-cells were reduced under hydrogen, giving a complete picture of phase, microstructure, and stress evolution under thermal and reduction cycles like the actual operation of the cell. Our results reveal that a temperature of 1400 ¿C and shorter soaking times might be advantageous for obtaining phase-pure and thin yttrium-doped BaZrO3 electrolytes with improved microstructure and the presence of compressive residual stress. These findings offer valuable insights into optimising the fabrication process of BaZrO3-based electrolytes, leading to enhanced performance and long-term stability of anode-supported protonic ceramic fuel cells operating at intermediate temperatures.Peer reviewedElsevier BVMinisterio de Ciencia e Innovación (España)Fernández-Muñoz, Sol [0000-0001-8114-5567]Alba, María D. [0000-0003-0025-3078]Ramírez Rico, Joaquín. [0000-0002-1184-0756]Chacartegui, Ricardo [0000-0001-7285-8661]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2024202420242024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/364965reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#nfo:eu-repo/grantAgreement/MICIN/PID2019-107019RB-I00https://doi.org/10.1016/j.jpowsour.2024.234070Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3649652026-05-22T06:33:51Z
dc.title.none.fl_str_mv Optimising anode supported BaZr1-xYxO3-¿ electrolytes for solid oxide fuel cells: Microstructure, phase evolution and residual stresses analysis
title Optimising anode supported BaZr1-xYxO3-¿ electrolytes for solid oxide fuel cells: Microstructure, phase evolution and residual stresses analysis
spellingShingle Optimising anode supported BaZr1-xYxO3-¿ electrolytes for solid oxide fuel cells: Microstructure, phase evolution and residual stresses analysis
Fernández-Muñoz, Sol
Fuel-cell
Electrolyte
Residual stress
Sintering
Proton conductors
fuels
title_short Optimising anode supported BaZr1-xYxO3-¿ electrolytes for solid oxide fuel cells: Microstructure, phase evolution and residual stresses analysis
title_full Optimising anode supported BaZr1-xYxO3-¿ electrolytes for solid oxide fuel cells: Microstructure, phase evolution and residual stresses analysis
title_fullStr Optimising anode supported BaZr1-xYxO3-¿ electrolytes for solid oxide fuel cells: Microstructure, phase evolution and residual stresses analysis
title_full_unstemmed Optimising anode supported BaZr1-xYxO3-¿ electrolytes for solid oxide fuel cells: Microstructure, phase evolution and residual stresses analysis
title_sort Optimising anode supported BaZr1-xYxO3-¿ electrolytes for solid oxide fuel cells: Microstructure, phase evolution and residual stresses analysis
dc.creator.none.fl_str_mv Fernández-Muñoz, Sol
Alba, María D.
Ramírez Rico, Joaquín.
Chacartegui, Ricardo
author Fernández-Muñoz, Sol
author_facet Fernández-Muñoz, Sol
Alba, María D.
Ramírez Rico, Joaquín.
Chacartegui, Ricardo
author_role author
author2 Alba, María D.
Ramírez Rico, Joaquín.
Chacartegui, Ricardo
author2_role author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
Fernández-Muñoz, Sol [0000-0001-8114-5567]
Alba, María D. [0000-0003-0025-3078]
Ramírez Rico, Joaquín. [0000-0002-1184-0756]
Chacartegui, Ricardo [0000-0001-7285-8661]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Fuel-cell
Electrolyte
Residual stress
Sintering
Proton conductors
fuels
topic Fuel-cell
Electrolyte
Residual stress
Sintering
Proton conductors
fuels
description Yttrium-doped BaZrO3 is a promising electrolyte for intermediate-temperature protonic ceramic fuel cells. In the anode-supported configuration, a slurry containing the electrolyte is deposited on the surface of a calcined porous anode and sintered. Differences in sintering behaviour and thermal expansion coefficients for the anode and electrolyte result in elastic residual stresses that can impact the long-term stability of the cell during cyclic operation. Half-cells using BaZr0.8Y0.2O3-¿ as the electrolyte were fabricated using the solid-state reaction sintering method under various sintering conditions. Comprehensive microstructure and residual stress analyses as a function of processing parameters were performed using two-dimensional X-ray diffraction, Rietveld refinement, and scanning electron microscopy, before and after the half-cells were reduced under hydrogen, giving a complete picture of phase, microstructure, and stress evolution under thermal and reduction cycles like the actual operation of the cell. Our results reveal that a temperature of 1400 ¿C and shorter soaking times might be advantageous for obtaining phase-pure and thin yttrium-doped BaZrO3 electrolytes with improved microstructure and the presence of compressive residual stress. These findings offer valuable insights into optimising the fabrication process of BaZrO3-based electrolytes, leading to enhanced performance and long-term stability of anode-supported protonic ceramic fuel cells operating at intermediate temperatures.
publishDate 2024
dc.date.none.fl_str_mv 2024
2024
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/364965
url http://hdl.handle.net/10261/364965
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
nfo:eu-repo/grantAgreement/MICIN/PID2019-107019RB-I00
https://doi.org/10.1016/j.jpowsour.2024.234070
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier BV
publisher.none.fl_str_mv Elsevier BV
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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