Novel metal-supported solid oxide fuel cells with impregnated symmetric La0.6Sr0.4Fe0.9Sc0.1O3-δ electrodes

This paper reports on the fabrication of novel metal-supported solid oxide fuel cells containing porous 430L stainless steel substrates. YSZ electrolytes and porous YSZ cathode backbones. Such tri-layer structures are obtained by the tape casting, lamination and co-firing techniques. Redox-stable La0.6Sr0.4Fe0.9Sc0.1O3-delta (LSFSc) oxides are introduced as symmetric electrode catalysts onto the internal surfaces of porous 430L substrates and YSZ backbones using the solution impregnation method. The maximum power density is 0.65 W cm(-2) measured at 800 degrees C. Impedance analyses show that the anode polarizations are the largest losses while the cathode polarizations make negligible contribution to the total cell resistances. (C) 2013 Elsevier B.V. All rights reserved.