Abstract
This paper describes with the influence of the operating conditions including the gas flow rate, the humidity, and the operating pressure on the performance of fuel cell with serpentine flow field. The results shows that the voltage drop at high load is depending on the cathode gas velocity and the condensed water quantity in the flow passage of the separator. Thus, it is important to secure more than 10∿15 m/sec of cathode gas velocity and to minimize the condensed water in the fuel cell without reducing the water state of the membrane by the design of separator and operating condition to prevent the voltage drop at high load.
