Hydrogen Consumption and Supply Rates

In a similar manner, we can estimate hydrogen consumption in an anodic reaction. Considering the number of elecfron charges as for each mole of hydrogen, in an anodic reaction, the mole consumption of hydrogen is given as 

In terms of total fuel cell power, the hydrogen mole consumption rate is given as 

Note that in a hydrogen-oxygen fuel cell, we can use n, = 2 for the number of electron charge transferred for each mole of hydrogen and Mhj = 2.02 X10 kg/mol in Equations 4.82 and 4.83. 

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