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Enhanced performances of structured oxygen electrodes for high temperature steam electrolysis

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorOGIER, Tiphaine
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
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorFOURCADE, Sébastien
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGRENIER, Jean-Claude
hal.structure.identifierLaboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux [LITEN]
dc.contributor.authorCOUTURIER, Karine
hal.structure.identifierLaboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux [LITEN]
dc.contributor.authorMOUGIN, Julie
hal.structure.identifierLaboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux [LITEN]
dc.contributor.authorPETITJEAN, Marie
dc.date.issued2013
dc.identifier.issn1615-6846
dc.description.abstractEnThe present study is focused on alternative structured oxygen electrodes for solid oxide electrolysis cells (SOEC). The Ln2NiO4+δ (Ln = La or Pr) nickelate oxides were selected as innovative electrode materials with respect to their mixed electronic and ionic conductivity. A thin interfacial ceria-based layer was added in between the electrode and the zirconia-based electrolyte to improve mechanical and electrochemical properties and to limit the chemical reactivity. These structured cells were characterized by electrochemical impedance spectroscopy on symmetrical cells, under zero dc conditions and anodic polarization. Low polarization resistance RP and improved anodic overpotential ηA versus current density curves were obtained for the Pr2NiO4+δ electrode with Ce0.8Y0.2O2-δ interlayer: RP is decreased down to 0.06 Ω cm2 at 800 °C, under air and zero dc conditions. Then, complete hydrogen electrode-supported cells including Pr2NiO4+δ as oxygen electrode were electrochemically characterized. At 800 °C, when the inlet gas composition is 90 vol.% H2O-10 vol.% H2 at the hydrogen electrode, air being swept at the oxygen electrode, the current density determined at 1.28 V reaches -0.9 A cm-2, the corresponding steam to hydrogen conversion ratio being 58%. These results are compared to those obtained with a reference cell including the oxygen deficient perovskite La0.6Sr0.4Fe0.8Co0.2O3-δ as oxygen electrode.
dc.description.sponsorshipFIabilisation De l'ELectrolYse de l'eau à haute température pour la production d'Hydrogène - ANR-09-HPAC-0005
dc.language.isoen
dc.publisherWiley-VCH Verlag
dc.subject.enBarrier Layer
dc.subject.enHydrogen Production
dc.subject.enK2NiF4 Structure
dc.subject.enOverpotential
dc.subject.enOxygen Electrode
dc.subject.enSOEC
dc.subject.enSOFC
dc.title.enEnhanced performances of structured oxygen electrodes for high temperature steam electrolysis
dc.typeArticle de revue
dc.identifier.doi10.1002/fuce.201200201
dc.subject.halChimie/Matériaux
bordeaux.journalFuel Cells
bordeaux.page536-541
bordeaux.volume13
bordeaux.issue4
bordeaux.peerReviewedoui
hal.identifierhal-00860497
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00860497v1
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