Power generation from ethanol by solid oxide fuel cells (SOFCs) can be a clean and green way to utilize renewable fuel. In this study, the performance of the reduced La0.4Sr0.6Co0.2Fe0.7Nb0.1O3-delta (LSCFN) with anchored Co-Fe nanoparticles is investigated as the electrode in low concentration ethanol for the first time. The cell with the LSCFN as the symmetrical electrodes demonstrates considerable peak power density (0.32 W cm-2) and excellent durability (160 h) at 800 C. Moreover, the reduced LSCFN is further applied as a catalyst layer to prevent the Ni-YSZ anode-supported cell from coking in ethanol fuel. Interestingly, both cells modified with or without this LSCFN layer demonstrate similar output performance in H-2. While in ethanol, the catalyst layer modified cell exhibits better coking resistance and stability than the conventional cell, showing 0.97 W cm-2 at 800 C, as well as excellent durability for 210 h. The results suggest that combining the Ni-YSZ anode-supported cells with the excellent carbon tolerance of the LSCFN can clean and stable directly generate power from ethanol. (C) 2022 Published by Elsevier B.V.
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Elsevier