A FUEL CELL SYSTEM, ELECTRODE CATALYST DEGRADATION JUDGMENT METHOD, AND MOVING BODY

摘要

Under the condition that a converter (51) lowers an output voltage of a fuel cell (2) and performs an activation process for a catalyst of the fuel cell (2) and supply of an oxidant gas from a compressor (31) to the fuel cell (2) is stopped, a reduction current is measured by a current sensor (2a) while performing scan to change the output voltage of the fuel cell (2) within a predetermined range by the converter (51) as a measurement of cyclic voltammetry and the measurement value is integrated by a control device (6). According to the integrated value, the control device (6) obtains a charge amount of an electrode catalyst of the fuel cell(2) so as to judge whether the charge amount is smaller than a degradation judgment value and displays the judgment result on a display device (55). Thus, it is possible to accurately judge whether the electrode catalyst of the fuel cell is degraded.