Patent ID: 7862954

Claim:
A fuel cell comprising a sheet-like solid polymer electrolyte, a cathode-side electrode plate arranged on one side of the solid polymer electrolyte, an anode-side electrode plate arranged on the other side, a cathode-side metal plate which is arranged on a surface of the cathode-side electrode plate and enables a gas to be flown to an internal side, and an anode-side metal plate which is arranged on a surface of the anode-side electrode plate and enables a fuel to be flown to an internal side, wherein a circumferential part of the solid polymer electrolyte is extended from the electrode plates on both sides, and circumferences of the metal plates on both sides are mechanically sealed by bending press in the state where they are electrically insulated, while the circumferential part is held by opposite parts of the metal plates, wherein the fuel cell has a structure in an external circumferential part of one metal plate is greater in width than an external circumferential part of the other metal plate, and an external circumferential part of the one metal plate is turned up so as to holding-press an external circumferential part of the other metal plate, so that the circumferential part of the solid polymer electrolyte is pressed by the opposite parts of the metal plates.