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Highlights on the Anisotropic Oxygen Transport Properties of Nickelates with K2NiF4-Type Structure: Links with the Electrochemical Properties of the Corresponding IT-SOFC's Cathodes

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorBASSAT, Jean-Marc.
hal.structure.identifierDepartment of Materials
dc.contributor.authorBURRIEL, Monica
hal.structure.identifierInstitut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier [ICGM ICMMM]
dc.contributor.authorCERETTI, Monica
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorVEBER, Philippe
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGRENIER, Jean-Claude
hal.structure.identifierInstitut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier [ICGM ICMMM]
dc.contributor.authorPAULUS, Werner
hal.structure.identifierDepartment of Materials
dc.contributor.authorA. KILNER, John
dc.date.issued2013
dc.identifier.issn1938-5862
dc.description.abstractEnnderstanding fundamental aspects of oxygen self-diffusion in MIEC materials is crucial for the discovery of next-generation of cathode materials. Perovskite-type oxides are the most studied material, the oxide ion diffusion being based on the vacancy migration in a cubic-like disordered network. According to results of predictive atomistic simulations, a current trend concerns experimental works related to perovskite-derived phases with anisotropic structures where oxide ion transport is no longer based on oxygen vacancies but on oxygen interstitials. Then a particular attention is here paid to the nickelates Ln2NiO4+δ, Ln=La, Nd, Pr, with the orthorhombic K2NiF4-type structure characterized by a high c/a lattice parameters ratio. We have completed our previous work performed on single crystals and thin films aiming at experimentally determining the oxygen diffusion and surface exchange coefficients using the so-called IEDP method, as a function of the crystallographic orientation as well as the rare-earth cation. Highly anisotropic oxygen diffusion properties have been evidenced and the activation energies have been compared. Moreover, the electrochemical performances (polarization resistance measurements) of the corresponding porous cathode materials were previously determined in the literature in the same T-range, using symmetrical half cells including YSZ as electrolyte. The results are discussed with regards to the oxygen diffusion properties of the electrode
dc.language.isoen
dc.publisherElectrochemical Society, Inc.
dc.title.enHighlights on the Anisotropic Oxygen Transport Properties of Nickelates with K2NiF4-Type Structure: Links with the Electrochemical Properties of the Corresponding IT-SOFC's Cathodes
dc.typeArticle de revue
dc.identifier.doi10.1149/05701.1753ecst
dc.subject.halChimie/Matériaux
bordeaux.journalECS Transactions
bordeaux.page1753-1760
bordeaux.volume57
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-00875583
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00875583v1
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