Synthesis and characterization of gamma-Bi2O3 based solid electrolyte doped with Nb2O5

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dc.authorid0000-0002-3745-954X
dc.contributor.authorOzlu, Handan
dc.contributor.authorCakar, Soner
dc.contributor.authorBilir, Caner
dc.contributor.authorErsoy, Ersay
dc.contributor.authorTurkoglu, Orhan
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2014
dc.departmentNiğde ÖHÜ
dc.description.abstractgamma-phase bismuth oxide is a well known high oxygen ion conductor and can be used as an electrolyte for intermediate temperature solid oxide fuel cells (IT-SOFCs). This study aims to determine new phases of Bi2O3-Nb2O5 binary system and the temperature dependence of the electrical transport properties. The reaction products obtained in open air atmosphere were characterized by X-ray powder diffractions (XRD). The unit cell parameters were defined from the indexes of the powder diffraction patterns. The gamma-Bi2O3 crystal system were obtained by doping 0.01 < mole% Nb2O5 < 0.04 at 750 degrees C for 48 and 96 h. Thermal behaviour and thermal stability of the phases were investigated by thermal analysis techniques. Surface and grain properties of the related phases were determined by SEM analysis. The temperature dependence of the electrical properties of gamma-Bi2O3 solid solution was measured by four-point probe d.c. conductivity method. In the investigated system, the highest value of conductivity was observed for sigma(T)=0.016 ohm(-1) cm(-1) at 650 degrees C on 4 mole% Nb2O5 addition. The electrical conductivity curves of studied materials revealed regular increase with temperature in the form of the Arrhenius type conductivity behaviour.
dc.description.sponsorshipScientific and Technical Research Council of Turkey (TUBITAK) [108T377]
dc.description.sponsorshipThe authors would like to thank the Scientific and Technical Research Council of Turkey (TUBITAK) for financial help (Grant no. 108T377).
dc.identifier.doi10.1007/s12034-014-0015-4
dc.identifier.endpage848
dc.identifier.issn0250-4707
dc.identifier.issn0973-7669
dc.identifier.issue4
dc.identifier.scopus2-s2.0-84903275433
dc.identifier.scopusqualityQ3
dc.identifier.startpage843
dc.identifier.urihttps://dx.doi.org/10.1007/s12034-014-0015-4
dc.identifier.urihttps://hdl.handle.net/11480/4164
dc.identifier.volume37
dc.identifier.wosWOS:000339599400015
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherINDIAN ACAD SCIENCES
dc.relation.ispartofBULLETIN OF MATERIALS SCIENCE
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectSolid electrolyte
dc.subjectsolid state reaction
dc.subjectBi2O3
dc.subjectelectrical conductivity
dc.subjectXRD
dc.subjectIT-SOFC
dc.titleSynthesis and characterization of gamma-Bi2O3 based solid electrolyte doped with Nb2O5
dc.typeArticle

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