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Evaluation of brownmillerite oxide as cathode for solid oxide fuel cells

hal.structure.identifierKey Laboratory of Functional Inorganic Material Chemistry [KLFIMC]
dc.contributor.authorLI, Qiang
hal.structure.identifierKey Laboratory of Functional Inorganic Material Chemistry [KLFIMC]
dc.contributor.authorSUN, Liping
hal.structure.identifierKey Laboratory of Functional Inorganic Material Chemistry [KLFIMC]
dc.contributor.authorZHAO, Hui
hal.structure.identifierKey Laboratory of Functional Inorganic Material Chemistry [KLFIMC]
dc.contributor.authorHUO, Lihua
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGRENIER, Jean-Claude
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorBASSAT, Jean-Marc.
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorMAUVY, Fabrice
dc.date.issued2013
dc.identifier.issn0378-7753
dc.description.abstractEnBrownmillerite oxide Ca2Fe1.3Mn0.7O5+δ is synthesized and evaluated as a new cathode material for solid oxide fuel cells (SOFCs). The average thermal expansion coefficient (TEC) of Ca2Fe1.3Mn0.7O5+δ is 13.3 ± 0.2 × 10−6 K−1, close to that of the typical electrolyte materials. The lowest polarization resistance (Rp) (0.22 ± 0.02 Ω cm2 at 750 °C in air) and cathodic overpotential values are achieved when the material is sintered at 1000 °C on Ce0.9Gd0.1O1.95 (CGO) electrolyte. Two main oxygen reduction reaction (ORR) processes are identified. The rate limiting step for ORR is found to depend on the oxygen partial pressure. The excellent electrochemical performance indicates that Ca2Fe1.3Mn0.7O5+δ can be a promising cathode material for SOFCs.
dc.language.isoen
dc.publisherElsevier
dc.title.enEvaluation of brownmillerite oxide as cathode for solid oxide fuel cells
dc.typeArticle de revue
dc.identifier.doi10.1016/j.jpowsour.2013.03.010
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of Power Sources
bordeaux.page11-16
bordeaux.volume238
bordeaux.peerReviewedoui
hal.identifierhal-00913485
hal.version1
hal.popularnon
hal.audienceInternationale
dc.subject.esSolid oxide fuel cells
dc.subject.esBrownmillerite oxide
dc.subject.esCathode material
dc.subject.esElectrode reaction
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00913485v1
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