FUEL CELL SYSTEM

PROBLEM TO BE SOLVED: To reduce ions included in moisture discharged from a fuel cell. SOLUTION: This fuel cell system is provided with: a gas-liquid separation means 26 arranged on at least either of discharge passages 11 and 21 of an oxidizer gas or a fuel gas discharged from the fuel cell 1, and separating moisture included in the oxidizer gas or the fuel gas; and a water supply pipe 30 for supplying water separated by the liquid-gas separation means 26 to the fuel cell 1. In the fuel cell system, an ion adsorbing agent 33 is arranged at least on a part of the inside wall of the water supply pipe 30. Since the ions included in the water separated by the liquid-gas separation means 26 is adsorbed by the ion adsorbing agent 33 arranged on the inside wall of the water supply pipe 30, the ions included in the moisture discharged from the fuel cell 1 can be reduced. COPYRIGHT: (C)2008,JPO&INPIT