Synthesis and electrical properties of nanostructured Ba2SnYO5.5 proton conductor

Ba2SnYO5.5 nanopowders were synthesised by a gel polymerisation method. In this process, a gel containing Ba, Sn and Y cations was obtained by the polymerisation of acrylic acid using N,N'-methylene bis-acrylamide as a cross-linking reagent and hydrogen peroxide as an ignition reagent. The gel...

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Bibliographic Details
Published inCeramics international Vol. 37; no. 8; pp. 3351 - 3355
Main Authors Wang, Y, Chesnaud, A, Bevillon, E, Dezanneau, G, Yang, J
Format Journal Article
LanguageEnglish
Published Elsevier 01.01.2011
Subjects
Ceramics
Crosslinking
Engineering Sciences
Materials
Nanocomposites
Nanomaterials
Nanostructure
Polymerization
Roasting
Spark plasma sintering
Spark plasma sintering
Nanostructure
Ba2SnYO5.5
Proton conduction
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Summary:Ba2SnYO5.5 nanopowders were synthesised by a gel polymerisation method. In this process, a gel containing Ba, Sn and Y cations was obtained by the polymerisation of acrylic acid using N,N'-methylene bis-acrylamide as a cross-linking reagent and hydrogen peroxide as an ignition reagent. The gel was calcined at 1200 C, giving rise to the Ba2SnYO5.5 single-phase nanopowders with a grain size ranging from 50 to 70 nm. The nanopowders were sintered at 1150 C by spark plasma sintering (SPS) to obtain dense nanostructured materials (> 95%) containing grains between 70 and 100 nm in size. Nanostructured Ba2SnYO5.5 showed good chemical stability in a wet atmosphere. However, its protonic conductivity was reduced when compared with that of microcrystalline Ba2SnYO5.5 ceramics.
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ISSN:0272-8842
DOI:10.1016/j.ceramint.2011.05.135