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Preparation and Characterization of Nanoceramics for Solid Oxide Fuel Cells

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Abstract

Precursor powders in the ZrO2–HfO2–Y2O3–CeO2, In2O3–ZrO2, and NiO–Nd2O3 systems for components of solid oxide fuel cells have been prepared by liquid-phase synthesis. We have determined formation conditions and the particle size of ZrO2- and In2O3-based solid solutions and neodymium nickelate (Nd2NiO4), demonstrated the feasibility of producing nanocrystalline powders (10–30 nm) of tailored chemical composition in the temperature range 500–900°C, and optimized powder consolidation conditions. Nanoceramics with a crystallite size from 60 to 90 nm have been obtained and their microstructure and phase composition have been investigated. We have studied the electrical properties of the ZrO2- and In2O3-based solid solutions and the Nd2NiO4 compound and established the range of their electrical conductivity at temperatures from 300 to 1000°C: 2.27 × 10–3 to 2.51 S/cm for the ZrO2-based solid solution, 8.91 × 101 to 6.59 × 103 S/cm for the In2O3-based solid solution, and 3.98 × 102 to 5.02 × 102 S/cm for Nd2NiO4.

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Correspondence to L. V. Morozova.

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Original Russian Text © L.V. Morozova, M.V. Kalinina, I.A. Drozdova, O.A. Shilova, 2018, published in Neorganicheskie Materialy, 2018, Vol. 54, No. 1, pp. 85–93.

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Morozova, L.V., Kalinina, M.V., Drozdova, I.A. et al. Preparation and Characterization of Nanoceramics for Solid Oxide Fuel Cells. Inorg Mater 54, 79–86 (2018). https://doi.org/10.1134/S0020168518010107

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