Influence of doctor blade gap on the properties of tape cast NiO/YSZ anode supports for solid oxide fuel cells

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dc.contributor.authorTimurkutluk B.
dc.contributor.authorCelik S.
dc.contributor.authorUcar E.
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2019
dc.departmentNiğde ÖHÜ
dc.description.abstractIn this study, various tape cast NiO/YSZ anode support layers with similar geometric properties are fabricated by varying the doctor blade from 100 µm to 200 µm with an increment of 25 µm. The mechanical properties of the anode support layers are investigated by three point bending tests of 30 samples for each doctor blade gap. The reliability curves of the flexural strength data are also obtained via two-parameter Weibull distribution method. The effects of the doctor blade gap on the microstructure and the electrochemical performance of the anode support layers are determined via SEM investigations and single cell performance-impedance tests, respectively. The apparent porosities of the samples are also measured by Archimedes’ principle. The results indicate that the doctor blade gap or the resultant tape thickness influences the microstructure of tape cast NiO/YSZ anode supports significantly, yielding different mechanical and electrochemical characteristics. At a reliability level of 70%, the highest flexural strength of 110.20 MPa is obtained from the anode support layer with a doctor blade gap of 175 µm and the 16 cm2 active area cell with this anode support layer also exhibits the highest peak performance of 0.483 W/cm2 at an operating temperature of 800 °C. Thus, a doctor blade gap of 175 µm is found to have such a microstructure that provides not only better mechanical strength but also higher electrochemical performance. © 2018 Elsevier Ltd and Techna Group S.r.l.
dc.identifier.doi10.1016/j.ceramint.2018.10.221
dc.identifier.endpage3198
dc.identifier.issn0272-8842
dc.identifier.issue3
dc.identifier.scopus2-s2.0-85055740627
dc.identifier.scopusqualityQ1
dc.identifier.startpage3192
dc.identifier.urihttps://dx.doi.org/10.1016/j.ceramint.2018.10.221
dc.identifier.urihttps://hdl.handle.net/11480/1510
dc.identifier.volume45
dc.identifier.wosWOS:000456225900034
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherElsevier Ltd
dc.relation.ispartofCeramics International
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectElectrochemical performance
dc.subjectFlexural strength
dc.subjectMicrostructure
dc.subjectSolid oxide fuel cell
dc.subjectTape cast anode support
dc.subjectTape thickness
dc.titleInfluence of doctor blade gap on the properties of tape cast NiO/YSZ anode supports for solid oxide fuel cells
dc.typeArticle

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