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Oxygen diffusion and surface exchange coefficients determined under high pressure: comparisons between oxygen deficient vs. oxygen over-stoichiometric air electrode materials

hal.structure.identifierLaboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux [LITEN]
dc.contributor.authorLAURENCIN, Jérôme
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorFLURA, Aurelien
hal.structure.identifierLaboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux [LITEN]
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorSDANGHI, Giuseppe
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorFOURCADE, Sébastien
hal.structure.identifierInstitute of Energy and Climate Research - Fundamental Electrochemistry [ IEK-9]
dc.contributor.authorVIBHU, Vaibhav
hal.structure.identifierPlateforme Aquitaine de Caractérisation des Matériaux [PLACAMAT]
dc.contributor.authorSALVETAT, Jean-Paul
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorBASSAT, Jean-Marc.
dc.contributor.editorEuropean Fuel Cell Forum AG
dc.date.issued2022
dc.date.conference2022-07-05
dc.description.abstractEnMIEC (Mixed Ionic Electronic Conductors) oxides combine, in addition to a high electronic conductivity, high oxygen diffusivity (D) and oxygen surface exchange (k) coefficients. These properties can be directly determined thanks to the so-called IEDP (Isotopic Exchange Depth Profiling) method, which leads to determine the tracer coefficients D* and k*. To date, the reported measurements in the literature have beenperformed at ambient pressure and even below. However, for a higher efficiency of hydrogen production at the system level, or for a ‘Power-to-Gas’ application, it is envisaged to operate the Solid Oxide Electrolysers (SOE) at high pressures, between 10 to 60 bars. In this frame, it becomes mandatory to assess the oxygen reduction/oxidation and the transport properties of the oxygen electrodes materials in the operating conditions, i.e. when there are submitted to such high pressure (HP) at high temperature.
dc.language.isoen
dc.source.titleEFCF 2022 : 15th European SOFC & SOE Forum, 5-8 July 2022, Lucerne, Switzerland : proceedings
dc.subject.enOxygen diffusion
dc.subject.enElectrode materials
dc.subject.enSurface exchange coefficients
dc.subject.enHigh pressure
dc.title.enOxygen diffusion and surface exchange coefficients determined under high pressure: comparisons between oxygen deficient vs. oxygen over-stoichiometric air electrode materials
dc.typeCommunication dans un congrès
dc.subject.halChimie/Matériaux
bordeaux.pageB1503 (12 pages)
bordeaux.conference.titleEFCF 2022: 15th European SOFC & SOE Forum
bordeaux.countryCH
bordeaux.title.proceedingEFCF 2022 : 15th European SOFC & SOE Forum, 5-8 July 2022, Lucerne, Switzerland : proceedings
bordeaux.conference.cityLucerne
bordeaux.peerReviewedoui
hal.identifierhal-03821709
hal.version1
hal.invitedoui
hal.proceedingsoui
hal.conference.end2022-07-08
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03821709v1
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