Fuel cell separator element

A fuel cell separator is pressed so that one of its sides defines a gas flow channel and the other side of a coolant flow channel. A width and a cross-sectional area d¶G¶ S¶G¶ the gas flow channel and a width d¶W¶ and a cross-sectional area of ​​the coolant flow passage S¶W¶ satisfy a ratio d¶Gg¶> = dS¶W¶ or a ratio S¶G > = ¶ S¶W¶.