Novel electrolytes for solid oxide fuel cells with improved mechanical properties

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dc.authorid0000-0001-6916-7720
dc.authorid0000-0002-7306-9784
dc.contributor.authorTimurkutluk, Bora
dc.contributor.authorCelik, Selahattin
dc.contributor.authorTimurkutluk, Cigdem
dc.contributor.authorMat, Mahmut D.
dc.contributor.authorKaplan, Yuksel
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2012
dc.departmentNiğde ÖHÜ
dc.description.abstractThe improvement of the mechanical properties of novel structured electrolytes with triangular cut off geometry in the active region is presented by filleting the tips of triangles. The effect of fillet radius on the bending strength of the yttria stabilized zirconia electrolyte was investigated with a commercial finite element code implementing the calculated Weibull stress through the experimental stress strain curve determined via tensile tests. The model was verified with the experimental three point bending test results for the electrolyte with unfilleted triangular cut off patterns. Ten different fillet radii ranging from 0.05 mm to 0.5 mm were considered in the simulations. The fracture displacement was found to increase with increasing fillet radius as expected. Since the electrolyte with fillet radius of 0.5 mm was found to show the highest flexural strength, single cell based on this electrolyte was fabricated and the cell performance was measured. It was found that the strength of the novel electrolyte with partly reduced thickness can be increased by 26.2% with sacrificing only 10.2% decrease in the performance. Since the final cell still showed 22.2% higher peak performance than the standard electrolyte supported cell, 10.2% decrease in the cell performance compared to the cell having unfilleted triangular cut off patterns is acceptable. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
dc.identifier.doi10.1016/j.ijhydene.2012.06.103
dc.identifier.endpage13509
dc.identifier.issn0360-3199
dc.identifier.issn1879-3487
dc.identifier.issue18
dc.identifier.scopus2-s2.0-84865500205
dc.identifier.scopusqualityQ1
dc.identifier.startpage13499
dc.identifier.urihttps://dx.doi.org/10.1016/j.ijhydene.2012.06.103
dc.identifier.urihttps://hdl.handle.net/11480/4547
dc.identifier.volume37
dc.identifier.wosWOS:000309043200032
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD
dc.relation.ispartofINTERNATIONAL JOURNAL OF HYDROGEN ENERGY
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectSolid oxide fuel cell
dc.subjectYttria stabilized zirconia
dc.subjectNovel electrolyte design
dc.subjectFinite element modeling
dc.subjectTensile and bending strength
dc.titleNovel electrolytes for solid oxide fuel cells with improved mechanical properties
dc.typeArticle

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