Abstract
The electrical conductivity of Sr0.8La0.2TiO3 (SLT) increased significantly through reducing calcination and sintering processes. The electrical conductivity of SLT sintered three times under a reducing atmosphere was 249Scm−1 at 800°C in a H2 atmosphere, which is 40 times higher than that of SLT sintered in air. The enhanced electrical conduction might be caused by the variation in valence state from Ti4+ to Ti3+. The single-cell performance of the Sr0.8La0.2TiO3–Ce0.9Gd0.1O1.95 (SLT–GDC) composite anode improved with increasing amount of GDC. The SG (HHH)15 anode exhibited the highest maximum power density of 25mWcm−2 at 800°C for CH4 fuel.
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