Tantalum doped La0.6Sr0.4FeO3−δ electrodes for symmetrical proton conducting solid oxide fuel cells

At 800 °C, the polarization resistances for La 0.6 Sr 0.4 Fe 0.9 Ta 0.1 O 3− δ (LSFT) barely reach 0.02 Ω cm 2 in air and 0.1 Ω cm 2 in H 2 , suggesting that LSFT should be a promising electrode for symmetrical proton conducting solid oxide fuel cells.