Solid oxide fuel cell comprising a chemically etched metallic sheet having controlled patterns of cavities (3) on one surface (1) of the metallic sheet and perforations (2) on opposite surface of the metallic sheet, and electrochemically active segments (4) deposited on the perforated surface of the metallic sheet characterised in that the perforations (2) on the one surface are etched with a diameter smaller than the diameter of the holes on the opposite surface.
