FUEL CELL SYSTEM AND FUEL CELL

PROBLEM TO BE SOLVED: To provide a fuel cell system capable of controlling properly a fuel amount flowing out from an anode of a fuel cell to the outside thereof, and capable of reducing size. SOLUTION: The fuel cell system includes: the fuel cell 10a provided with a membrane-electrode composite, an anode flow channel plate 20, a vent passage 41, and a discharge passage 42 communicated with the vent passage 41; a measuring instrument 50 for measuring a power generation state of the fuel cell 10a; a fuel supply part 60 for supplying fuel to the fuel cell 10a; and a control part 100 for analyzing the flow-out amount of the fuel flowing out from the discharge passage 42, based on a measured result from the measuring instrument 50, and for controlling a supply amount of the fuel to bring the flow-out amount into a prescribed value, based on an analytical result therein. COPYRIGHT: (C)2010,JPO&INPIT