Patent ID: 7449214

Claim:
A process for the preparation of a solid oxide fuel cell comprising: providing a metallic sheet and chemically etching the metallic sheet to divide a surface area of the metallic sheet and to obtain a plurality of individual cell segments laterally displaced relative to each other on the surface area of the metallic sheet, each of the plurality of cell segments comprising controlled patterns of cavities on the surface of the metallic sheet and a controlled pattern of through perforations on opposite surface of the metallic sheet, the cavities extending partially through the metallic sheet and being continuous with and in communication with more than one of the perforations on the opposite surface of the metallic sheet, wherein the perforations on the surface are etched with a width smaller than the width of the cavities on the opposite surface; and providing a plurality of electrochemically active segments on the perforated surface of the metallic sheet, each of the plurality of electrochemically active segments consisting of an anode layer, an electrolyte layer and a cathode layer, each of the plurality of electrochemically active segments corresponding to each of the plurality of cell segments.