Patent ID: 6228520
Filing Date: 2001-05-08
Classification: H01M,Y02E

Abstract:
A solid oxide fuel cell stack with cosinterable components and an improved interconnect layer consisting of:a plurality of fuel cells having an anode, a cathode, and an electrolytic layer interposed between the anode and the cathode and the anode, the cathode, and the electrolytic layer possessing a definite shrinkage property when simultaneously co-sintered; andan improved interconnect layer interposed between the fuel cells having a composition of the general formula La.sub.(1-x) (Sr+Ca).sub.x CrO.sub.3, wherein x is a number from 0.05 to 0.5; wherein the improved interconnect layer is densifiable at a relatively low temperature which is suitable for a simultaneous co-sintering, as a single unit, of the anode, the cathode, the electrolytic layer and the improved interconnect layer in an air atmosphere; and wherein the improved interconnect layer acts as a barrier to gases introduced into the fuel cell stack, has good electrical conductivity, and does not react with gases introduced into the fuel cell stack.