Patent ID: 8895208

Claim:
A process for the manufacture of an interconnect for a fuel cell or a fuel cell stack, the process comprising the steps of: providing at least one metal sheet to a press; pressing protrusions on both sides of the at least one metal sheet, thereby forming contact points, lines or areas on both sides of the at least one metal sheet, wherein said protrusions are pressed to an excess dimension, an excess protrusion height above the at least one metal sheet surface on either side of the at least one metal sheet; assembling said at least one metal sheet with excess dimensioned protrusions with layers comprising anode, cathode and electrolyte to form a fuel cell or plurality of stacked fuel cells forming a cell stack; providing the at least one metal sheet with excess dimensioned protrusions and said layers comprising anode, cathode and electrolyte to a calibrating press; and performing a calibration step wherein the assembled cell or cell stack including the at least one metal sheet is heated to a temperature above 850° C. and compressed in the calibrating press during an amount of time of 1 to 3 hours, whereby the excess dimensioned protrusions of the at least one metal sheet are compressed and creep to reach the final dimension smaller than said excess dimension, thereby obtaining contact to the adjacent layers of the cell or the cell stack.