Solid oxide fuel cell

Abstract

SOFC cell comprising a metallic supportending in a substantially pure electron conducting oxide, an active anode layerconsisting of doped ceria, ScYSZ, Ni—Fe alloy, an electrolyte layerconsisting of co-doped zirconia based on oxygen ionic conductor, an active cathode layerand a layer of a mixture of LSM and a ferrite as a transition layerto a cathode current collectorof single phase LSM. The use of a metallic support instead of a Ni—YSZ anode support increases the mechanical strength of the support and secures redox stability of the support. The porous ferrite stainless steel ends in a pure electron conducting oxide so as to prevent reactivity between the metals in the active anode which tends to dissolve into the ferrite stainless steel causing a detrimental phase shift from ferrite to austenite structure.