Afficher la notice abrégée

Influence of annealing at intermediate temperature on oxygen transport kinetics of Pr2NiO4+d

hal.structure.identifierInstitute for Nanotechnology [MESA+]
dc.contributor.authorSAHER, Saim
hal.structure.identifierInstitute for Nanotechnology [MESA+]
dc.contributor.authorSONG, Jia
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorVIBHU, Vaibhav
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorNICOLLET, Clément
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorFLURA, Aurelien
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorBASSAT, Jean-Marc.
hal.structure.identifierInstitute for Nanotechnology [MESA+]
dc.contributor.authorBOUWMEESTER, Henny J. M.
dc.date.issued2018
dc.identifier.issn2050-7488
dc.description.abstractEnElectrical conductivity relaxation (ECR) and oxygen permeation measurements were conducted, at 750 °C, to assess the long-term oxygen transport characteristics of the mixed ionic–electronic conducting Pr2NiO4+δ with a K2NiF4 structure. The results show that the apparent values for the oxygen diffusion and surface exchange coefficients extracted from the data and the associated oxygen flux increase over 120 h by 1–2 orders of magnitude. The results of post-mortem X-ray diffraction analysis of the samples show partial to virtually complete decomposition of Pr2NiO4+δ under the conditions of the experiments to Pr4Ni3O10+δ, PrNiO3−δ, Pr6O11, and traces of NiO. Pulse 18O–16O isotopic exchange (PIE) measurements confirmed fast surface exchange kinetics of the higher-order Ruddlesden–Popper phase Pr4Ni3O10+δ and Pr6O11 formed upon decomposition. Additional factors related to the microstructure, however, need to be considered to explain the observations.
dc.language.isoen
dc.publisherRoyal Society of Chemistry
dc.title.enInfluence of annealing at intermediate temperature on oxygen transport kinetics of Pr2NiO4+d
dc.typeArticle de revue
dc.identifier.doi10.1039/c7ta08885j
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of Materials Chemistry A
bordeaux.page8331-8339
bordeaux.volume6
bordeaux.issue18
bordeaux.peerReviewedoui
hal.identifierhal-01794207
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01794207v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Materials%20Chemistry%20A&rft.date=2018&rft.volume=6&rft.issue=18&rft.spage=8331-8339&rft.epage=8331-8339&rft.eissn=2050-7488&rft.issn=2050-7488&rft.au=SAHER,%20Saim&SONG,%20Jia&VIBHU,%20Vaibhav&NICOLLET,%20Cl%C3%A9ment&FLURA,%20Aurelien&rft.genre=article


Fichier(s) constituant ce document

FichiersTailleFormatVue

Il n'y a pas de fichiers associés à ce document.

Ce document figure dans la(les) collection(s) suivante(s)

Afficher la notice abrégée