FUEL CELL STACK

The present invention relates to a fuel cell stack, and according to one aspect of the present invention, there is provided a fuel cell stack comprising a plurality of fuel cells, wherein the fuel cell comprises a membrane-electrode assembly having an anode electrode and a cathode electrode, gas diffusion layers each disposed on both sides of the membrane-electrode assembly, a first separating plate having a first surface facing the anode electrode side so as to be in contact with the gas diffusion layer and a second surface opposite to the first surface, and a second separating plate having a first surface facing the cathode electrode side so as to be in contact with the gas diffusion layer and a second surface opposite to the first surface, and at least one of the second surface of the first separating plate and the second surface of the second separating plate is provided with one or more protrusions protruding to the outside.