Abstract

Metal-supported solid oxide fuel cells with porous 430L stainless steel substrates, YSZ electrolytes and porous YSZ cathode backbones are studied. The tri-layer structure is obtained by the tape casting, lamination and co-firing techniques. Nano Ni-Ce0.8Sm0.2O2-δ (SDC) and La0.6Sr0.4Fe0.9Sc0.1O3-δ (LSFSc) particles, which act as the anode and cathode catalysts, individually, are impregnated onto the internal surfaces of the porous 430L and YSZ, respectively. The maximum power densities of the single cell are 0.68, 0.92, 1.09 and 1.23 Wcm−2 at 650, 700, 750 and 800 °C, respectively. Initial 190 h stability test of the single cell at 600 °C under a constant voltage of 0.7 V shows that the current density is stable at about 0.6 A cm−2 and no obvious degradation is observed.

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