FUEL CELL SYSTEM

摘要

Techniques are described for substantially reducing deterioration of a fuel cell stack within a fuel cell system. More specifically, the techniques substantially reduce deterioration of the fuel cell stack by modifying moisture content of an oxidant electrode catalytic layer of the fuel cell stack. A fuel cell system may include fuel cell stack with a membrane electrode assembly that includes a fuel electrode and an oxidant electrode placed on either side of an electrolytic membrane supported by a plurality of unit cells. The fuel cell system may also includes a controller capable of decreasing the moisture content of the oxidant electrode catalytic layer in response to detecting a loading state of the fuel cell stack reaches a predetermined loading value and a voltage of the unit cells reaches a predetermined voltage value. In this way, the techniques may prevent the deterioration of the oxidant electrode catalytic layer.