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dc.contributor.authorKim, Chang Sub
dc.contributor.authorBishop, Sean
dc.contributor.authorPerry, Nicola
dc.contributor.authorTuller, Harry L
dc.date.accessioned2017-04-07T20:04:59Z
dc.date.available2017-11-05T05:00:05Z
dc.date.issued2017-01
dc.date.submitted2016-05
dc.identifier.issn1385-3449
dc.identifier.issn1573-8663
dc.identifier.urihttp://hdl.handle.net/1721.1/107976
dc.description.abstractOxygen nonstoichiometry and the defect chemistry of the SrSn[subscript 1-x]Fe[subscript x]O[subscript 3-x/2+δ] (SSF) system were examined by means of thermogravimetry as a function of oxygen partial pressure in the temperature range of 700–1000 °C and compared against the corresponding mixed ionic-electronic conducting titanate, SrTi[subscript 1-x]Fe[subscript x]O[subscript 3-x/2+δ] (STF) system. The alternate B site host cation, Sn, was selected to replicate and extend the STF studies, given its distinct band structure and higher electron mobility associated with its 5s derived conduction band as compared to the 3d nature of the conduction band in the titanate. Though shifted slightly by the larger size of Sn, the defect equilibria – including the oxygen vacancy concentration – were found to be largely dominated by Fe oxidation state, and thus differed only in a limited way from those in STF. Key thermodynamic parameters for SrSn[subscript 0.65]Fe[subscript 0.35]O[subscript 2.825+δ] (SSF35) were derived including the reduction enthalpy (4.137 ± 0.175 eV), the high temperature electronic band gap (1.755 ± 0.015 eV) and the anion Frenkel enthalpy (0.350 ± 0.350 eV). The implications these observations have for cathode behavior in solid oxide fuel cells are briefly discussed.en_US
dc.description.sponsorshipNational Science Foundation (U.S.) (award number DMR-1507047)en_US
dc.publisherSpringer USen_US
dc.relation.isversionofhttp://dx.doi.org/10.1007/s10832-017-0064-3en_US
dc.rightsCreative Commons Attribution-Noncommercial-Share Alikeen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/en_US
dc.sourceSpringer USen_US
dc.titleElectro-chemo-mechanical studies of perovskite-structured mixed ionic-electronic conducting SrSn[subscript 1-x]Fe[subscript x]O[subscript 3-x/2+δ] part I: Defect chemistryen_US
dc.title.alternativeElectro-chemo-mechanical studies of perovskite-structured mixed ionic-electronic conducting SrSn1-xFexO3-x/2+δpart I: Defect chemistryen_US
dc.typeArticleen_US
dc.identifier.citationKim, Chang Sub, Sean R. Bishop, Nicola H. Perry, and Harry L. Tuller. “Electro-Chemo-Mechanical Studies of Perovskite-Structured Mixed Ionic-Electronic Conducting SrSn1-xFexO3-X/2+δ part I: Defect Chemistry.” Journal of Electroceramics 38, no. 1 (January 11, 2017): 74–80.en_US
dc.contributor.departmentMIT Materials Research Laboratoryen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Materials Science and Engineeringen_US
dc.contributor.mitauthorKim, Chang Sub
dc.contributor.mitauthorBishop, Sean
dc.contributor.mitauthorPerry, Nicola
dc.contributor.mitauthorTuller, Harry L
dc.relation.journalJournal of Electroceramicsen_US
dc.eprint.versionAuthor's final manuscripten_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2017-03-21T04:27:54Z
dc.language.rfc3066en
dc.rights.holderSpringer Science+Business Media New York
dspace.orderedauthorsKim, Chang Sub; Bishop, Sean R.; Perry, Nicola H.; Tuller, Harry L.en_US
dspace.embargo.termsNen
dc.identifier.orcidhttps://orcid.org/0000-0002-1989-4281
dc.identifier.orcidhttps://orcid.org/0000-0002-9811-0077
dc.identifier.orcidhttps://orcid.org/0000-0001-8339-3222
mit.licenseOPEN_ACCESS_POLICYen_US
mit.metadata.statusComplete


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