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Influence of oxygen partial pressure on the oxygen diffusion and surface exchange coefficients in mixed conductors

hal.structure.identifierIRCER - Axe 1 : procédés céramiques [IRCER-AXE1]
dc.contributor.authorGEFFROY, Pierre-Marie
hal.structure.identifierAgence de l'Environnement et de la Maîtrise de l'Énergie [ADEME]
dc.contributor.authorGUIRONNET, Laure
hal.structure.identifierInstitute for Nanotechnology
dc.contributor.authorBOUWMEESTER, Henry J. M.
hal.structure.identifierIRCER - Axe 1 : procédés céramiques [IRCER-AXE1]
dc.contributor.authorCHARTIER, Thierry
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.
dc.date.issued2019-01
dc.identifier.issn0955-2219
dc.description.abstractEnThe performances of mixed ionic and electronic conductors is used in many applications, such as oxygen transport membranes or electrodes in solid oxide fuel cells. The performances of these systems depend mainly on two fundamental parameters including oxygen diffusion (DO) and the oxygen exchange coefficient (k). This work focuses on the impact of the oxygen partial pressure on oxygen diffusion and surface exchange coefficients of mixed conducting materials, as reported studies are scarce in the literature. In this way, two different mixed conducting materials are studied, namely, La0.6Sr0.4Fe0.6Ga0.4O3-δ, a perovskite-type material, and the nickelate La2NiO4+δ. The DO and k coefficients are determined by a specific oxygen permeation measurement and by the isotopic exchange depth profile method.
dc.language.isoen
dc.publisherElsevier
dc.subject.enMixed conductor
dc.subject.enOxygen surface exchanges
dc.subject.enOxygen isotopic exchange
dc.subject.enOxygen partial pressure
dc.title.enInfluence of oxygen partial pressure on the oxygen diffusion and surface exchange coefficients in mixed conductors
dc.typeArticle de revue
dc.identifier.doi10.1016/j.jeurceramsoc.2018.03.034
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of the European Ceramic Society
bordeaux.page59-65
bordeaux.volume39
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-01955490
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01955490v1
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