Influence of calcium addition on the electrical conductivity of samarium doped ceria

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dc.contributor.authorREIS, S.L.pt_BR
dc.contributor.authorMUCCILLO, E.N.pt_BR
dc.coverageInternacionalpt_BR
dc.creator.eventoINTERNATIONAL CONFERENCE & EXPOSITION ON ADVANCED CERAMICS AND COMPOSITES, 42ndpt_BR
dc.date.accessioned2019-10-09T13:07:11Z
dc.date.available2019-10-09T13:07:11Z
dc.date.eventoJanuary 21-26, 2018pt_BR
dc.description.abstractCeria-based ceramics have been proposed to be used as solid electrolyte in solid oxide fuel cells operating at intermediate (500-750°C) temperatures, due to their high ionic conductivity. Samarium ion is recognized as one of the most reliable dopants for cerium oxide because of its lower association energy with oxygen vacancies. One challenge posed to ceria-based solid electrolytes is how to improve sinterability, avoiding high temperatures to attain good densification. Thermal treatments at high temperatures may reduce Ce4+ to Ce3+, favoring electron transport and generation of micropores in the sintered electrolyte. Introduction of a second additive is a usual approach to overcome these constraints. In this work calcium ion was chosen as the second additive. Sm0.2-xCaxCe0.8O1.9-x/2 compositions, with x = 0, 0.025, 0.05, 0.1, 0.15 and 0.2, were prepared by solid-state reaction, and the influence of the additive content on densification and ionic conductivity was investigated. All compositions were found to have cubic fluorite-type structure. The optimal composition was Sm0.175Ca0.025Ce0.8O1.888, which showed a relative density of 97%, single phase and higher ionic conductivity than the Sm0.2Ce0.8O1.9 parent electrolyte.pt_BR
dc.event.siglaICACCpt_BR
dc.format.extent97-97pt_BR
dc.identifier.citationREIS, S.L.; MUCCILLO, E.N. Influence of calcium addition on the electrical conductivity of samarium doped ceria. In: INTERNATIONAL CONFERENCE & EXPOSITION ON ADVANCED CERAMICS AND COMPOSITES, 42nd, January 21-26, 2018, Daytona Beach, Florida, USA. <b>Abstract...</b> Westerville, OH, USA: The American Ceramic Society, 2018. p. 97-97. Disponível em: http://repositorio.ipen.br/handle/123456789/30208.
dc.identifier.orcid0000-0001-9219-388Xpt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-9219-388X
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/30208
dc.localWesterville, OH, USApt_BR
dc.local.eventoDaytona Beach, Florida, USApt_BR
dc.publisherThe American Ceramic Societypt_BR
dc.rightsopenAccesspt_BR
dc.titleInfluence of calcium addition on the electrical conductivity of samarium doped ceriapt_BR
dc.typeResumo de eventos científicospt_BR
dspace.entity.typePublication
ipen.autorELIANA NAVARRO DOS SANTOS MUCCILLO
ipen.autorSHIRLEY LEITE DOS REIS
ipen.codigoautor1298
ipen.codigoautor3968
ipen.contributor.ipenauthorELIANA NAVARRO DOS SANTOS MUCCILLO
ipen.contributor.ipenauthorSHIRLEY LEITE DOS REIS
ipen.date.recebimento19-10
ipen.event.datapadronizada2018pt_BR
ipen.identifier.ipendoc25999pt_BR
ipen.notas.internasAbstractpt_BR
ipen.type.genreResumo
relation.isAuthorOfPublicationbc09f7ae-f25e-4f60-87a3-0c89989e8304
relation.isAuthorOfPublication37a8d93a-dd7a-4e10-aa00-eba2c03bebb6
relation.isAuthorOfPublication.latestForDiscovery37a8d93a-dd7a-4e10-aa00-eba2c03bebb6
sigepi.autor.atividadeMUCCILLO, E.N.:1298:720:Npt_BR
sigepi.autor.atividadeREIS, S.L.:3968:720:Spt_BR
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