Please use this identifier to cite or link to this item: http://hdl.handle.net/10773/20631
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dc.contributor.authorSoares, Catia M. C.pt
dc.contributor.authorPatricio, Sonia G.pt
dc.contributor.authorFigueiredo, Filipe M. L.pt
dc.contributor.authorMarques, Fernando M. B.pt
dc.date.accessioned2017-12-07T19:54:01Z-
dc.date.issued2014pt
dc.identifier.issn0360-3199pt
dc.identifier.urihttp://hdl.handle.net/10773/20631-
dc.description.abstractComposite electrolytes based on Gd-doped ceria (from 50 to 95 vol%) and one eutectic mixture of sodium and lithium carbonates were prepared by co-firing, in order to identify the compositional range where both oxide and carbonate-ion transport are balanced, as required for high performance CO2 separation membranes. Considering the adequacy of this technique, the effects of composition and microstructure on oxide-ion transport were inspected by impedance spectroscopy. The specific features of low temperature impedance spectra allowed access to data on oxide-ion transport based on a hereby suggested equivalent circuit where the individual characteristics of both constituent phases are considered, as well as the variable nature and relevance of interfaces. Combined analysis of all information indicates that the range of interesting compositions for balanced dual ionic conduction corresponds to a ceramic phase content around 85 yo1%, for the present microstructural characteristics and a target temperature below 550 degrees C. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.pt
dc.language.isoengpt
dc.publisherPERGAMON-ELSEVIER SCIENCE LTDpt
dc.relationinfo:eu-repo/grantAgreement/FCT/5876-PPCDTI/98486/PTpt
dc.relationinfo:eu-repo/grantAgreement/FCT/COMPETE/132936/PTpt
dc.rightsrestrictedAccesspor
dc.subjectCERIA-BASED COMPOSITESpt
dc.subjectDOPED-CERIApt
dc.subjectFUEL-CELLSpt
dc.subjectDIOXIDE SEPARATIONpt
dc.subjectHIGH-TEMPERATUREpt
dc.subjectPHASE MEMBRANESpt
dc.subjectELECTROLYTESpt
dc.subjectCONDUCTIVITYpt
dc.subjectPERFORMANCEpt
dc.subjectPERMEATIONpt
dc.titleRelevance of the ceramic content on dual oxide and carbonate-ion transport in composite membranespt
dc.typearticlept
dc.peerreviewedyespt
ua.distributioninternationalpt
degois.publication.firstPage5424pt
degois.publication.issue10pt
degois.publication.lastPage5432pt
degois.publication.titleINTERNATIONAL JOURNAL OF HYDROGEN ENERGYpt
degois.publication.volume39pt
dc.date.embargo10000-01-01-
dc.relation.publisherversion10.1016/j.ijhydene.2013.12.121pt
dc.identifier.doi10.1016/j.ijhydene.2013.12.121pt
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