Method for operating fuel cell vehicle

A method for operating a fuel cell vehicle including a vehicle drive motor to which electric power is supplied from a fuel cell and a battery, the method comprising:

• maintaining an output electric potential of the fuel cell at a constant value near an upper limit of a deterioration acceleration region or at a constant value near a lower limit of the deterioration acceleration region when increasing or decreasing electric power extracted the fuel cell in a state in which electric power is supplied from the fuel cell and the battery to the vehicle drive motor, the deterioration acceleration region being a voltage region in which deterioration of the fuel cell is accelerated due to a platinum oxidation-reduction reaction.

A method for operating a fuel cell vehicle, comprising:

• supplying electric power to a vehicle drive motor from at least one of a fuel cell and a battery;
• and
• maintaining an electric potential of electric power output from the fuel cell at a constant value near an upper limit of a deterioration acceleration region or at a constant value near a lower limit of the deterioration acceleration region when changing electric power output from the fuel cell in a state where the fuel cell and the battery supply electric power to the vehicle drive motor, the deterioration acceleration region being a voltage region in which the fuel cell is deteriorated due to a platinum oxidation-reduction reaction.