What is the nominal value of current drawn from a single PEM fuel cell under normal, flooded and dried conditions?
The current density from a single cell is usually the determining factor for FCs. After sizing your cell/stack/system (according to your application), you can find total current using the current density.
A typical PEMFC would have a current density between 0.5-1 A/cm2 (depending on the operation point you choose for your application really). While under flooded and dried conditions, your current density and voltage could drop very rapidly. That is, of course, if the flooding/drying doesn't cause permanent membrane damage first. Of course, in order to properly and accurately find your polarization/power curves under flooded/dried conditions, you need a multi-dimensional dynamic PEMFC model that takes into account water transport effects.
I hope this helps!
Plot a VI & PI curve with your fuel cell and find the peak power and corresponding current is your peak current ... slightly lesser than that will be your operating current density..
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