Patent ID: 7553570

Claim:
A fuel cell comprising: a power generation unit configured to include a positive electrode that reduces oxygen as an active material, a negative electrode that oxidizes a gaseous fuel, and an electrolyte layer provided between said positive electrode and said negative electrode; a fuel storage unit to store a liquid fuel; a pressure application unit to apply pressure to the liquid fuel stored in said fuel storage unit; a liquid fuel vaporization unit to dissolve and diffuse the liquid fuel pressed by said pressure application unit to vaporize the fuel, and to emit the vaporized fuel as a gaseous fuel; and a gaseous fuel oxidization unit to generate a reactive gas by oxidizing parts of the gaseous fuel emitted from said liquid fuel vaporization unit and supplying the reactive gas and remaining parts of the gaseous fuel to the negative electrode, wherein the reactive gas is one that is caused to chemically react with the remaining gaseous fuel at the negative electrode.