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Improved electrochemical performance of Ca2Fe1.4Co0.6O5-Ce0.9Gd0.1O1.95 composite cathodes for intermediate-temperature 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.authorHUO, Lihua
hal.structure.identifierKey Laboratory of Functional Inorganic Material Chemistry [KLFIMC]
dc.contributor.authorZHAO, Hui
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGRENIER, Jean-Claude
dc.date.issued2012
dc.identifier.issn1432-8488
dc.description.abstractEnThe performance of Ca2Fe1.4Co0.6O5-Ce0.9Gd0.1O1.95 (CFC-CGO) composite cathode has been investigated for potential application in intermediate-temperature solid oxide fuel cells (IT-SOFCs). The composite cathodes are prepared and characterized by XRD and SEM, respectively. The electrochemical properties of the composite cathodes are investigated using AC impedance and DC polarization methods from 500 to 700 °C under different oxygen partial pressures. The polarization resistance (R p) decreases with the increase of CGO content in the composite electrode. The addition of 40 wt.% CGO in CFC results in the lowest R p of 0.48 Ω cm2 at 700 °C in air. Oxygen partial pressure dependence study indicates that the charge-transfer process is the rate limiting step for oxygen reduction reaction. CFC-40CGO composite cathode exhibits the lowest overpotential of about 67 mV at a current density of 85 mA cm−2 at 700 °C in air.
dc.language.isoen
dc.publisherSpringer Verlag
dc.subject.enElectrochemistry
dc.subject.enCharacterization and Evaluation of Materials
dc.subject.enEnergy Storage
dc.typeArticle de revue
dc.identifier.doi10.1007/s10008-011-1508-3
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of Solid State Electrochemistry
bordeaux.page1169-1174
bordeaux.volume16
bordeaux.issue3
bordeaux.peerReviewedoui
hal.identifierhal-00975369
hal.version1
hal.popularnon
hal.audienceInternationale
dc.title.esImproved electrochemical performance of Ca2Fe1.4Co0.6O5-Ce0.9Gd0.1O1.95 composite cathodes for intermediate-temperature solid oxide fuel cells
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00975369v1
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