Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/9532
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dc.contributor.authorSındıraç, Can-
dc.contributor.authorBüyükaksoy, Aligül-
dc.contributor.authorAkkurt, Sedat-
dc.date.accessioned2020-07-25T22:16:53Z-
dc.date.available2020-07-25T22:16:53Z-
dc.date.issued2019-
dc.identifier.issn0928-0707-
dc.identifier.issn1573-4846-
dc.identifier.urihttps://doi.org/10.1007/s10971-019-05073-5-
dc.identifier.urihttps://hdl.handle.net/11147/9532-
dc.description.abstractInfiltration of electrocatalyst precursor solutions into previously sintered porous ionic conductor scaffolds has been used recently as an alternative method to the conventional co-sintering route to fabricate electrocatalyst-ionic conductor composites for solid oxide fuel cell (SOFC) cathode applications. However, the aqueous nitrate solutions generally used to perform the infiltration process results in electrocatalyst precipitates that are disconnected from each other, yielding poor electrode performance. In this work, polymeric electrocatalyst (La0.6Sr0.4Co0.2Fe0.8O3-LSCF) precursors that produce interconnected thin films upon heat treatment were used to infiltrate porous ionic conductor Ce0.9Gd0.1O2-delta (GDC) scaffolds to overcome these issues. In addition, for the first time in the literature, a mixture of LSCF and GDC polymeric precursors, which would yield LSCF-GDC nanocomposite coatings on the grains of the porous GDC scaffold were used as the infiltration solution. Thus, further enhancement of the electrocatalyst/ionic conductor interfacial area and achievement of improved electrode performance was aimed. As a result of the optimization studies, the lowest measured area specific polarization resistance (ASR(cathode)) values of 0.47 and 0.73 omega.cm(2) were obtained for polymeric LSCF+GDC and LSCF precursor infiltrations respectively at 700 degrees C, in air. In addition, LSCF+GDC infiltration yielded electrodes with much improved long-term stability in comparison to those obtained by LSCF infiltration. [GRAPHICS] .en_US
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.ispartofJournal of Sol - Gel Science and Technologyen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectSOFCen_US
dc.subjectGDCen_US
dc.subjectLSCFen_US
dc.subjectImpedanceen_US
dc.subjectInfiltrationen_US
dc.subjectElectrochemical performanceen_US
dc.titleElectrochemical performance of La0.6Sr0.4Co0.2Fe0.8O3-Ce0.9Gd0.1O2-delta composite SOFC cathodes fabricated by electrocatalyst and/or electrocatalyst-ionic conductor infiltrationen_US
dc.typeArticleen_US
dc.institutionauthorSındıraç, Can-
dc.institutionauthorAkkurt, Sedat-
dc.departmentİzmir Institute of Technology. Mechanical Engineeringen_US
dc.identifier.volume92en_US
dc.identifier.issue1en_US
dc.identifier.startpage45en_US
dc.identifier.endpage56en_US
dc.identifier.wosWOS:000483728100005en_US
dc.identifier.scopus2-s2.0-85068957762en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.identifier.doi10.1007/s10971-019-05073-5-
dc.relation.doi10.1007/s10971-019-05073-5en_US
dc.coverage.doi10.1007/s10971-019-05073-5en_US
dc.identifier.wosqualityQ2-
dc.identifier.scopusqualityQ2-
item.fulltextWith Fulltext-
item.cerifentitytypePublications-
item.openairetypeArticle-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.grantfulltextopen-
item.languageiso639-1en-
crisitem.author.dept03.09. Department of Materials Science and Engineering-
Appears in Collections:Mechanical Engineering / Makina Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
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