Influence of annealing at intermediate temperature on oxygen transport kinetics of Pr2NiO4+d
hal.structure.identifier | Institute for Nanotechnology [MESA+] | |
dc.contributor.author | SAHER, Saim | |
hal.structure.identifier | Institute for Nanotechnology [MESA+] | |
dc.contributor.author | SONG, Jia | |
hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
dc.contributor.author | VIBHU, Vaibhav | |
hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
dc.contributor.author | NICOLLET, Clément | |
hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
dc.contributor.author | FLURA, Aurelien | |
hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
dc.contributor.author | BASSAT, Jean-Marc. | |
hal.structure.identifier | Institute for Nanotechnology [MESA+] | |
dc.contributor.author | BOUWMEESTER, Henny J. M. | |
dc.date.issued | 2018 | |
dc.identifier.issn | 2050-7488 | |
dc.description.abstractEn | Electrical 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.iso | en | |
dc.publisher | Royal Society of Chemistry | |
dc.title.en | Influence of annealing at intermediate temperature on oxygen transport kinetics of Pr2NiO4+d | |
dc.type | Article de revue | |
dc.identifier.doi | 10.1039/c7ta08885j | |
dc.subject.hal | Chimie/Matériaux | |
bordeaux.journal | Journal of Materials Chemistry A | |
bordeaux.page | 8331-8339 | |
bordeaux.volume | 6 | |
bordeaux.issue | 18 | |
bordeaux.peerReviewed | oui | |
hal.identifier | hal-01794207 | |
hal.version | 1 | |
hal.popular | non | |
hal.audience | Internationale | |
hal.origin.link | https://hal.archives-ouvertes.fr//hal-01794207v1 | |
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