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dc.contributor.authorShajahan, I.-
dc.contributor.authorAhn, J.-
dc.contributor.authorNair, P.-
dc.contributor.authorMedisetti, S.-
dc.contributor.authorPatil, S.-
dc.contributor.authorNiveditha, V.-
dc.contributor.authorUday, Bhaskar, Babu, G.-
dc.contributor.authorDasari, Hari Prasad-
dc.contributor.authorLee, J.-H.-
dc.identifier.citationMaterials Chemistry and Physics, 2018, Vol.216, , pp.136-142en_US
dc.description.abstractPraseodymium-doped ceria (PDC, Ce0.9Pr0.1O2) electrolyte material for intermediate temperature solid oxide fuel cells (IT-SOFCs) has been successfully synthesised by EDTA-citrate method. From X-Ray diffraction (XRD), fluorite structure along with a crystallite size of 5.4 nm is obtained for PDC nanopowder calcined at 350 C/24 h. Raman spectroscopy confirmed the structure, presence of oxygen vacancies with the manifestation of the main peak at 457 cm?1 and with a secondary peak at 550 cm?1. From Transmission Electron Microscopy (TEM) analysis, the average particle size is around 7 10 nm and selected area electron diffraction (SAED) patterns further confirmed the fluorite structure of PDC nanopowder. The PDC nanopowder displayed a BET surface area of 65 m2/g with a primary particle size of ?13 nm (calculated from BET surface area). Dilatometer studies revealed a multi-step shrinkage behaviour with the multiple peaks at 522, 1171 and 1461 C which may be originated due to the presence of multiple size hard agglomerates. The PDC electrolyte pellet sintered at 1500 C displayed an ionic conductivity of 1.213E-03 S cm?1 along with an activation energy of 1.28eV. Instead of a single fluorite structure, XRD of sintered PDC pellet showed multiple structures (Fluorite structure (CeO2) and cubic structure (PrO2). 2018 Elsevier B.V.en_US
dc.titlePraseodymium doped ceria as electrolyte material for IT-SOFC applicationsen_US
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