Patent ID: 6974648

Claim:
A fuel cell, comprising: a pair of membrane electrode assemblies (MEAs) separated from each other by a distance, each MEA having an anode side and a cathode side; a bipolar plate assembly located between the anode side of one of the pair of MEAs and the cathode side of the other of the pair of MEAs, the bipolar plate assembly having: a first sub-plate with a flow channel which is open to the anode side of the one of the pair of MEAs and a land region adjacent to said flow channel in said first sub-plate; a second sub-plate with a flow channel which is open to the cathode side of the other of the pair of MEAs and a land region adjacent to said flow channel in said second sub-plate, the first sub-plate and the second sub-plate being nested together to form a coolant flow channel between the first and second sub-plates, one of said land region adjacent to said flow channel in said first sub-plate and said land region adjacent to laid flow channel in said second sub-plate having a width substantially greater than a width of said flow channel in the other of said first sub-plate and said second sub-plate.