Mixed calcium vanadatomolybdate CaV0.5Mo0.5O3 was synthesized, and its phase composition was studied in relation to the annealing temperature in the interval 600–1150°C. The heat treatment at 1150°C leads to the formation of a single-phase product of perovskite structure. Transformations in the systems consisting of CaV0.5Mo0.5O3 and solid electrolytes 0.9ZrO2-0.1Y2O3, BaZr0.95Y0.05O3, and La0.88Sr0.12Ga0.82Mg0.18O2.85 (weight ratio 1: 1) in the temperature interval 900–1250°C were studied using X-ray diffraction analysis. The temperatures at which calcium vanadatomolybdate starts to react with the electrolyte materials are considerably higher than the operation temperatures of the solid oxide fuel cells. Recommendations are formulated on the prospects for using CaV0.5Mo0.5O3 as an anode material for solid oxide fuel cells, primarily for those with the electrolyte based on lanthanum gallate.
Russian Journal of Applied Chemistry – Springer Journals
Published: Jul 14, 2015
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