The cell needs a
hydrogen supply rate of 198 ml/min to the anode; a further
supply of air at a rate of 611 ml/min to the cathode is necessary
to operate at 20 A of current. The cell voltage was maintained
at 0.65 V for 6 min at 20 A. After that, the cell voltage
decreased to 0.4 V for 45 s and then dropped to 0 V