Development of a Porous Metal Substrate for Metal Supported SOFCs Using a Fe-Cr-Al Stainless Steel

Abstract

Metal supported cells with porous metallic substrates made of stainless steels are expected to drastically improve remaining issues of durability and cost for solid oxide fuel cells (SOFCs). In this study, we succeeded in fabricating a porous alloy substrate for SOFC using a Fe-Cr-Al type stainless steel, which showed excellent heat resistance. We investigated the application of the alloy substrate for the cathode side and good heat resistance and relatively low contact resistance between the alloy substrate and La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3 (LSCF) was obtained at 700 o C in air.