文摘
The replacement of Co by Nb in the La1 − xBaxCo1 − yNbyO3 − δ (0.6 ≤ x ≤ 1.0) system stabilizes the cubic perovskite. For a fixed Ba content, the incorporation of Nb5+ depress the oxygen permeation flux, ORR, σ and the TEC values. The minimum polarization resistance value was 0.08 Ω cm2, at 600 °C, in air, for La0.2Ba0.8Co0.9Nb0.1O3 − δ.