Certain fuel cells (e.g., solid polymer electrolyte fuel cells) may temporarily
exhibit below normal performance after initial manufacture or after prolonged storage.
While normal performance levels may be obtained after operating such fuel cells
for a suitable time period, this process can take of order of days to fully complete.
However, exposing the cathode to a reductant (e.g., hydrogen) can provide for normal
performance levels without the need for a lengthy initial operating period.
