Patent ID: 8137856

Claim:
A fuel cell comprising: proton exchange membranes each integrally formed with an anode and a cathode; anode diffusion layers arranged in close contact with the anodes, respectively; cathode diffusion layers arranged in close contact with the cathodes, respectively; and metal separators made of a metal plate and each formed between two of the proton exchange membranes when a plurality of the proton exchange membranes are formed, each metal separator including an anode manifold for supplying fuel to the anode formed on one of the two proton exchange membranes and a cathode manifold for supplying oxygen to the cathode formed on the other one of the two proton exchange membranes, —wherein each metal separator further includes: an anode communicating channel formed by bending an anode communicating channel structure, which is integrally linked with the metal plate via a preprocessing work area and has a metal plate part on which a protruding structure is formed so as to form a fuel supplying channel, at the preprocessing work area in such a manner that the protruding structure faces the metal plate; and a cathode communicating channel formed by bending a cathode communicating channel structure, which is integrally linked with the metal plate via preprocessing work area and has a metal plate part on which a protruding structures is formed so as to form an oxygen supplying channel, at the preprocessing work area in such a manner that the protruding structure faces the metal plate.