BIFEVOX Composites: Manufacture and Characterization
| Autor: | E. S. Buyanova, A. A. Krylov, Yu. V. Emel’yanova, I. V. Nikolaenko, M. V. Morozova |
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| Rok vydání: | 2018 |
| Předmět: |
Zirconium
Materials science Annealing (metallurgy) Materials Science (miscellaneous) Oxide chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Dielectric spectroscopy Bismuth Inorganic Chemistry chemistry.chemical_compound chemistry Bismuth vanadate Fast ion conductor Physical and Theoretical Chemistry Composite material 0210 nano-technology Powder diffraction |
| Zdroj: | Russian Journal of Inorganic Chemistry. 63:1297-1302 |
| ISSN: | 1531-8613 0036-0236 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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