Patent ID: 9680163
Date: 2017-06-13
CPC Classifications: H01M,Y02E,Y02P

Claim:
1. A solid oxide fuel cell having a one-pieced plate ( 2 ) the entirety of which is produced by powder metallurgy, wherein the plate has a central area ( 4 ) and an edge area ( 5 ) made of the same material, wherein there is a continuous and seamless transition between the edge area ( 5 ) and the central area ( 4 ), wherein the central area is a porous substrate to which an electrochemically active cell layer ( 6 ) is applied, and wherein gas passages ( 17 , 18 ) are provided in the edge area ( 5 ), and wherein the edge area ( 5 ) is compressed to be gastight, and wherein a gastight connection is made between the plate ( 2 ) and an interconnector ( 3 ) along the edge area ( 5 ) of the plate and along a circumference of the interconnector, and wherein the composition of one-pieced plate consists of: 15 to 35 wt % Cr; 0.01 to 2 wt % of one or more elements selected from the group consisting of Ti, Zr, Hf, Mn, Y, Sc, and rare earth metals; 0 to 10 wt % of one or more elements selected from the group consisting of Mo and Al; 0 to 5 wt % of one or more elements selected from the group consisting of Ni, W, Nb, and Ta; 0.1 to 1 wt % O; and balance Fe and impurities, whereby at least one metal of the group Y, Sc, rare earth metals and at least one metal of the group Cr, Ti, Al, Mn can form a mixed oxide.