Patent ID: 8790844

Claim:
A fuel cell stack comprising a plurality of membrane electrode assemblies (MEAs) and a plurality of bipolar plates, wherein at least one surface of a first bipolar plate extends in an undulating, meandering or zig-zag-shaped fashion, and extreme points of the surface of the first bipolar plate contact a first surface of a MEA at contact points, wherein a mating contact points on a second surface of the MEA facing the first surface of the MEA are associated to at least a part of the contact points, said mating contact points being contacted by a surface of a second bipolar plate, and in that the contact points and the associated mating contact points are arranged on top of each other in the stacking direction; wherein the mating contact points are contacted by the surface of the second bipolar plate via metal foam; and wherein the metal foam contacts the second surface of the MEA in the mating contact points only.