This
drop can be attributed to the fact that hydrogen generation
rate dropped to below 96 ml/min after 13 min. The hydrogen
generated from the hydrolysis of the 3.5 g e CNTs/Al composite
produced a current of 10 A, for 12 min. Previous PEMFC
operation tests using the Al-hydrolysis system were performed
only at 10 A, because the hydrogen generation rate is
too low to achieve higher current [23,24]