Electrical conductivity of yttria-stabilized zirconia with cobalt addition

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dc.contributor.authorSILVA, G.C.T.pt_BR
dc.contributor.authorMUCCILLO, E.N.S.pt_BR
dc.coverageInternacionalpt_BR
dc.date.accessioned2014-07-15T13:41:11Zpt_BR
dc.date.accessioned2014-07-30T11:51:36Z
dc.date.available2014-07-15T13:41:11Zpt_BR
dc.date.available2014-07-30T11:51:36Z
dc.date.issued2009pt_BR
dc.description.abstractYttria-stabilized zirconia is the most developed solid electrolyte for use in high-temperature solid oxide fuel cells. Commercial yttria-stabilized zirconia powders reach high densification at temperatures higher than that of the usual anode materials. Reduction of the sintering temperature of the solid electrolyte could allow for co-firing of both ceramic components, thereby reducing production costs. The main purpose of this work was to study the effect of small cobalt additions on densification and on electrical conductivity of 8 mol% yttria-stabilized zirconia. Linear shrinkage results show that the onset temperature for shrinkage decreases with increasing cobalt content. Impedance spectroscopy measurements reveal that the electrical conductivity depends on the sintering profile. For specimens sintered at 1400 °C for 0.1 h the electrical conductivity of grains and grain boundaries are almost unchanged with that of 8YSZ. In contrast, for specimens sintered at the same temperature but for 0.5 h of soaking time, the electrical conductivity is higher in 0.025 mol% samples and is lower for 1 mol% Co doped 8YSZ. Degradation of the microstructure by increased porosity was obtained for high additive contents.
dc.format.extent835-838pt_BR
dc.identifier.citationSILVA, G.C.T.; MUCCILLO, E.N.S. Electrical conductivity of yttria-stabilized zirconia with cobalt addition. <b>Solid State Ionics</b>, v. 180, n. 11-13, p. 835-838, 2009. DOI: <a href="https://dx.doi.org/10.1016/j.ssi.2009.02.003">10.1016/j.ssi.2009.02.003</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/4814.
dc.identifier.doi10.1016/j.ssi.2009.02.003
dc.identifier.fasciculo11-13pt_BR
dc.identifier.issn0167-2738pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-9219-388X
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/4814pt_BR
dc.identifier.vol180pt_BR
dc.relation.ispartofSolid State Ionicspt_BR
dc.rightsopenAccessen
dc.subjectyttrium oxidespt_BR
dc.subjectzirconium oxidespt_BR
dc.subjectcobaltpt_BR
dc.subjectelectric conductivitypt_BR
dc.subjectadditivespt_BR
dc.subjectgrain boundariespt_BR
dc.subjectsolid oxide fuel cellspt_BR
dc.titleElectrical conductivity of yttria-stabilized zirconia with cobalt additionpt_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorELIANA NAVARRO DOS SANTOS MUCCILLO
ipen.autorGRAZIELA CRISTIANE TELLES DA SILVA
ipen.codigoautor1298
ipen.codigoautor5894
ipen.contributor.ipenauthorELIANA NAVARRO DOS SANTOS MUCCILLO
ipen.contributor.ipenauthorGRAZIELA CRISTIANE TELLES DA SILVA
ipen.date.recebimento10-01pt_BR
ipen.identifier.fi2.162pt_BR
ipen.identifier.ipendoc14534pt_BR
ipen.identifier.iwosWoSpt_BR
ipen.range.fi1.500 - 2.999
ipen.type.genreArtigo
relation.isAuthorOfPublicationbc09f7ae-f25e-4f60-87a3-0c89989e8304
relation.isAuthorOfPublication1b73d2d8-0da2-46f4-91d3-4aef4aa3ec18
relation.isAuthorOfPublication.latestForDiscovery1b73d2d8-0da2-46f4-91d3-4aef4aa3ec18
sigepi.autor.atividadeSILVA, G.C.T.:5894:-1:Spt_BR
sigepi.autor.atividadeMUCCILLO, E.N.S.:1298:720:Npt_BR
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