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Design of La2-xPrxNiO4+d SOFC cathodes : a compromise between electrochemical performance and thermodynamic stability

hal.structure.identifierLaboratoire d'Electrochimie et de Physico-chimie des Matériaux et des Interfaces [LEPMI ]
dc.contributor.authorSHARMA, Rakesh K.
hal.structure.identifierLaboratoire d'Electrochimie et de Physico-chimie des Matériaux et des Interfaces [LEPMI ]
dc.contributor.authorCHEAH, Seng-Kian
hal.structure.identifierLaboratoire des matériaux et du génie physique [LMGP ]
dc.contributor.authorBURRIEL, Mónica
hal.structure.identifierLaboratoire d'Electrochimie et de Physico-chimie des Matériaux et des Interfaces [LEPMI ]
dc.contributor.authorDESSEMOND, Laurent
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorBASSAT, Jean-Marc.
hal.structure.identifierLaboratoire d'Electrochimie et de Physico-chimie des Matériaux et des Interfaces [LEPMI ]
dc.contributor.authorDJURADO, Elisabeth
dc.date.issued2017
dc.identifier.issn2050-7488
dc.description.abstractEnArchitecturally designed La2−xPrxNiO4+δ (with x = 0, 0.5, 1 and 2) cathodes on the Ce0.9Gd0.1O2−δ (CGO) electrolyte have been prepared with a view to take advantage of the complimentary properties of the two extreme compositions La2NiO4+δ and Pr2NiO4+δ, i.e. the superior stability of La2NiO4+δ and the higher electronic conductivity of Pr2NiO4+δ. The design consists of stacking of two layers starting with a 3D tree-like microstructure (∼20 μm thick) over a thin dense base layer (∼100 nm) fabricated in one step by electrostatic spray deposition (ESD) and then topped by using a screen-printed (SP) current collecting layer of the same composition. X-ray diffraction confirms the formation of a complete solid solution crystallizing in a single phase orthorhombic structure with the Fmmm space group. The thermodynamic stability and polarisation resistance (Rpol) decrease by increasing the Pr content. Among the complete La2−xPrxNiO4+δ solid solutions, LaPrNiO4+δ shows the best compromise between electrochemical properties (the lowest Rpol value available in the literature for this composition, 0.12 Ω cm2 at 600 °C) and thermodynamic stability in air. Moreover, an anode supported single cell (Ni-3YSZ/Ni-8YSZ/8YSZ/CGO) including the LaPrNiO4+δ double layer electrode shows a maximum power density of 438 mW cm−2 at 700 °C.
dc.description.sponsorshipCenter of Excellence in Multifunctional Architectured Materials - ANR-10-LABX-0044
dc.language.isoen
dc.publisherRoyal Society of Chemistry
dc.title.enDesign of La2-xPrxNiO4+d SOFC cathodes : a compromise between electrochemical performance and thermodynamic stability
dc.typeArticle de revue
dc.identifier.doi10.1039/c6ta08011a
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of Materials Chemistry A
bordeaux.page1120–1132
bordeaux.volume5
bordeaux.issue3
bordeaux.peerReviewedoui
hal.identifierhal-01611329
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01611329v1
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