Influence of cathode functional layer composition on electrochemical performance of solid oxide fuel cells

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dc.creatorAntônio de Pádua Lima Fernandes
dc.creatorEric Marsalha Garcia
dc.creatorRubens Moreira de Almeida
dc.creatorHosane Aparecida Taroco
dc.creatorEdyth Priscilla Campos Silva
dc.creatorRosana Zacarias Domingues
dc.creatorTulio Matencio
dc.date.accessioned2023-09-05T18:12:00Z
dc.date.accessioned2025-09-08T23:23:15Z
dc.date.available2023-09-05T18:12:00Z
dc.date.issued2016
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.description.sponsorshipOutra Agência
dc.identifier.doihttps://doi.org/10.1007/s10008-016-3241-4
dc.identifier.issn1433-0768
dc.identifier.urihttps://hdl.handle.net/1843/58466
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of Solid State Electrochemistry
dc.rightsAcesso Restrito
dc.subjectEletroquímica
dc.subjectQuímica do estado sólido
dc.subjectCélulas à combustível
dc.subjectFerrita
dc.subjectLantâneo
dc.subjectEstrôncio
dc.subjectCobalto
dc.subject.otherSOFC
dc.subject.otherLSCF
dc.subject.otherInterface
dc.subject.otherElectrochemical performance
dc.subject.otherCathode
dc.subject.otherFunctional layer
dc.titleInfluence of cathode functional layer composition on electrochemical performance of solid oxide fuel cells
dc.typeArtigo de periódico
local.citation.epage2580
local.citation.issue9
local.citation.spage2575
local.citation.volume20
local.description.resumoIn this work, anode-supported solid oxide fuel cells (SOFC) were tested with a yttria-stabilized zirconia (YSZ) (8 mol% Y2O3-ZrO2)/gadolinium-doped ceria (GDC) (Ce0.9Gd 0.1O1.95) bilayer electrolyte and two lanthanum strontium cobalt ferrite (LSCF) composition as functional cathode layer: La0.6Sr0.4Co0.8Fe0.2O3-δ (LSCF 1) and La0.60Sr0.40Co0.2Fe0.8O3-δ (LSCF 2). The functional cathode layers were made of 50 % (w/w) LSCF and 50 % (w/w) GDC. Microstructural characterization was performed by scanning electron microscopy and X-ray diffraction. Electrochemical impedance spectroscopy (EIS) and power measurements were performed under oxygen and hydrogen atmospheres. The microscopy studies showed that the LSCF 2 functional layer is more uniform and adherent to the electrolyte and the cathode collector than the LSCF 1 functional layer, which has cracks, chips, and lower adhesion. The use of the LSCF 2 layer allowed an approximately 25-fold reduction in ohmic resistance (0.06 Ω cm−²) compared with the LSCF 1 layer (1.5 Ω cm−²). The power measurements showed a considerable increase in the power cell using LSCF 2 (approximately 420 mW cm−²) compared with the power cell using LSCF 1 (approximately 180 mW cm−²).
local.identifier.orcidhttps://orcid.org/0000-0002-3731-7568
local.identifier.orcidhttps://orcid.org/0000-0002-8744-9200
local.identifier.orcidhttps://orcid.org/0000-0002-6678-8537
local.identifier.orcidhttps://orcid.org/0000-0001-5667-2031
local.identifier.orcidhttps://orcid.org/0000-0002-5660-8125
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://link.springer.com/article/10.1007/s10008-016-3241-4

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