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dc.contributor.authorPorras-Vázquez, José Manuel
dc.contributor.authorZayas-Rey, María José
dc.contributor.authorRamirez-Losilla, Enrique 
dc.contributor.authorMarrero-López, David 
dc.contributor.authorDos Santos-Gómez, Lucía
dc.date.accessioned2015-07-13T09:19:09Z
dc.date.available2015-07-13T09:19:09Z
dc.date.created2015
dc.date.issued2015-07-13
dc.identifier.urihttp://hdl.handle.net/10630/10070
dc.description.abstractLanthanum tungstate with composition La27W4NbO55- (LWNO) has been tested as proton conductor electrolyte for Solid Oxide Fuel Cells (SOFCs). For this purpose, different electrodes and composite electrodes are considered, including: La0.8Sr0.2MnO3-, La0.6Sr0.4Co1-xFexO3-, La0.5Sr0.5Cr0.5Mn0.5O3-, SrFe0.75Nb0.25O3- and NiO. Chemical compatibility between the cell components is investigated by X-ray powder diffraction (XRPD) and energy dispersive spectroscopy (EDS). Furthermore, area specific resistance (ASR) of the different electrodes is determined in symmetrical cells by impedance spectroscopy. XRPD and EDS analysis do not reveal significant bulk reactivity between most of these electrodes and LWNO electrolyte in the typical operating temperature range of a SOFC (600-900 ºC). However, minor interdiffusion of elements at the electrolyte/electrode interface affects both the ohmic losses and electrode polarization of the cells. ASR values are significantly improved by using a buffer layer of Ce0.8Gd0.2O1.9, between the electrolyte and electrode materials, to prevent reactivity. A single cell with 350 µm thick electrolyte, NiO-Ce0.8Gd0.2O1.9 anode and La0.6Sr0.4Co0.8Fe0.2O3- cathode, generates maximum power densities of 140 and 18 mWcm-2 at 900 and 650 ºC, respectively.es_ES
dc.description.sponsorshipUniversidad de Málaga. Campus de Excelencia Internacional Andalucía Tech.es_ES
dc.language.isoenges_ES
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.subjectPilas de combustiblees_ES
dc.subject.otherProton conductores_ES
dc.subject.otherFuel cell testes_ES
dc.subject.otherLanthanum tungstatees_ES
dc.titleSolid Oxide Fuel Cells based on Lanthanum Tungstates Electrolyteses_ES
dc.typeinfo:eu-repo/semantics/conferenceObjectes_ES
dc.centroFacultad de Cienciases_ES
dc.relation.eventtitlePPCC15es_ES
dc.relation.eventplaceBurdeoses_ES
dc.relation.eventdate7/2015es_ES
dc.identifier.orcidhttp://orcid.org/0000-0002-2673-1413es_ES
dc.cclicenseby-nc-ndes_ES


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