INSPECTION METHOD OF FUEL CELL

摘要

A MEA is set in a state where a hydrogen gas is continuously supplied to both an anode-side electrode and a cathode-side electrode. In this state, a current is applied from an external power supply unit to the anode-side electrode and the cathode-side electrode so that the cathode-side electrode has a higher potential and that the current value gradually increases. Upon applying the current in this way, measured voltages between both electrodes measured by a voltage measurement unit are plotted in time series, thereby measuring the voltage transition across the inspection object MEA. A power generation performance inspection of the inspection object MEA is carried out based on the measured voltage transition.

主权项

1. An inspection method of a fuel cell in which an electrolyte membrane is sandwiched between an anode-side electrode and a cathode-side electrode, comprising:
supplying a hydrogen gas to one of the anode-side electrode and the cathode-side electrode and supplying the hydrogen gas or an inert gas to the other electrode; applying a current from an external power supply to the one electrode and the other electrode so that the other electrode has a higher potential, and measuring a potential difference between the one electrode and the other electrode; and inspecting a performance of the fuel cell based on the potential difference between the one electrode and the other electrode measured when the current of a predetermined current value is applied from the external power supply to the one electrode and the other electrode, and an initial potential difference which is a potential difference between the one electrode and the other electrode before applying the current from the external power supply to the one electrode and the other electrode.