Abstract
Nanostructured and palladium-promoted Sr-doped LaMnO 3 (LSM)-based cathodes are developed via solution impregnation for intermediate-temperature solid oxide fuel cells (IT-SOFCs). Both the nanostructured and Pd-promoted LSM-based cathodes show significantly improved electrochemical performance compared to the conventional LSM/Y 2 O 3 -doped ZrO 2 YSZ composite cathode, with electrode polarization resistances of 1.5 and 0.9 Ω cm 2 at 600°C, respectively, in contrast to 70 Ω cm 2 obtained from the conventional LSM/YSZ cathode. Low activation energies are also obtained with the developed cathodes, indicating a promising applicability of such nanostructured and Pd-promoted electrodes as cathodes for the intermediate-temperature SOFCs.
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