Hydrothermal preparation and electrochemical properties of Gd3+ and Bi3+, Sm3+, La3+, and Nd3+ codoped ceria-based electrolytes for intermediate temperature-solid oxide fuel cell

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dc.contributor.authorDikmen, Sibel
dc.contributor.authorAslanbay, Hasan
dc.contributor.authorDikmen, Erdal
dc.contributor.authorSahin, Osman
dc.date.accessioned2024-09-18T20:57:07Z
dc.date.available2024-09-18T20:57:07Z
dc.date.issued2010
dc.departmentHatay Mustafa Kemal Üniversitesien_US
dc.description.abstractThe structure, the thermal expansion coefficient, electrical conductivities of Ce0.8Gd0.2-xMxO2-delta (for M: Bi, x=0-0.1, and for M: Sm, La, and Nd, x=0.02) solid solutions, prepared for the first time hydrothermally, are investigated. The uniformly small particle size (28-59 nm) of the materials allows sintering of the samples into highly dense ceramic pellets at 1300-1400 degrees C. The maximum conductivity, sigma(700 degrees C) around 4.46 x 10(-2) S cm(-1) with E-a =0.52eV, is found at x = 0.1 for Bi-co-doping. Among various metal-co-dopings, for x = 0.02, the maximum conductivity, sigma(700 degrees C) around 2.88 x 10(-2) S cm(-1) with E-a = 0.67 eV, is found for Sm-co-doping. The electrolytic domain boundary (EDB) of Ce0.8Gd0.1Bi0.1O2-delta is found to be 1.2 x 10(-19) atm, which is relatively lower than that of the singly doped samples. The thermal expansion coefficients, determined from high-temperature X-ray data are 11.6 x 10(-6) K-1 for the CeO2, 12.1 x 10(-6) K-1 for Ce0.8Gd0.2O2-delta, and increase with co-doping to 14.2 x 10(-6) K-1 for Ce0.8Gd0.18Bi0.20O2-delta. The maximum power densities for the single cell based on the codoped samples are higher than that of the singly doped sample. These results suggest that co-doping can further improve the electrical performance of ceria-based electrolytes. (C) 2009 Elsevier B.V. All rights reserved.en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey [TUBITAK 106T536]en_US
dc.description.sponsorshipThis work was funded by The Scientific and Technological Research Council of Turkey, under contrast no. TUBITAK 106T536.en_US
dc.identifier.doi10.1016/j.jpowsour.2009.11.077
dc.identifier.endpage2495en_US
dc.identifier.issn0378-7753
dc.identifier.issn1873-2755
dc.identifier.issue9en_US
dc.identifier.scopus2-s2.0-73249134567en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage2488en_US
dc.identifier.urihttps://doi.org/10.1016/j.jpowsour.2009.11.077
dc.identifier.urihttps://hdl.handle.net/20.500.12483/12300
dc.identifier.volume195en_US
dc.identifier.wosWOS:000274546700009en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofJournal of Power Sourcesen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectSOFCen_US
dc.subjectHydrothermal preparationen_US
dc.subjectCo-dopingen_US
dc.titleHydrothermal preparation and electrochemical properties of Gd3+ and Bi3+, Sm3+, La3+, and Nd3+ codoped ceria-based electrolytes for intermediate temperature-solid oxide fuel cellen_US
dc.typeArticleen_US

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