Abstract
Design of composites is a way to improve the quality of solid electrolytes. By mechanically mixing and annealing substituted bismuth vanadate with nanosized aluminum, bismuth, and zirconium binary oxides, we obtained heterogeneous materials Bi4V1.7Fe0.3O11 – δ/xAl2O3, Bi4V1.7Fe0.3O11 – δ/xBi2O3, and Bi4V1.7Fe0.3O11 – δ/xYSZ. The investigation tools were X-ray powder diffraction and electron microscopy with energy-dispersive microanalysis. The composition of materials was studied, the non-interaction of components was elucidated in the aluminum oxide and zirconium oxide composite series, and a nonuniform distribution of nanopowder particles across the surfaces and cleaves of sinters was discovered. The bismuth atoms from bismuth oxide were shown to be capable of incorporating into the Bi4Fe0.3V1.7O11 – δ structure. The charge transport characteristics of the materials were studied by impedance spectroscopy. No changes were observed in logσ–103/T trends in composites with various binary oxides and various oxide contents. An increase in binary oxide concentration was shown to give rise to an insignificant decay in electrical conductivity.
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Original Russian Text © E.S. Buyanova, Yu.V. Emel’yanova, M.V. Morozova, A.A. Krylov, I.V. Nikolaenko, 2018, published in Zhurnal Neorganicheskoi Khimii, 2018, Vol. 63, No. 10, pp. 1280–1285.
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Buyanova, E.S., Emel’yanova, Y.V., Morozova, M.V. et al. BIFEVOX Composites: Manufacture and Characterization. Russ. J. Inorg. Chem. 63, 1297–1302 (2018). https://doi.org/10.1134/S0036023618100042
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DOI: https://doi.org/10.1134/S0036023618100042