Theoretical Power generation
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Concepts and Comments
Max Energy From H2 in Fuel Cell - Thermodynamic Limit
at room T and P (300K and 1atm)
[math]\displaystyle{ H_2 + 0.5 O_2 = H_2O }[/math]
Enthalpy ([math]\displaystyle{ \Delta H }[/math]) and Entropy ([math]\displaystyle{ T\Delta S }[/math])
[math]\displaystyle{ \Delta H = -285.8 kJ/mol H_2 }[/math]
[math]\displaystyle{ T\Delta S = -48.7 kJ/mol H_2 }[/math]
Gibbs Free Energy (available for work)
[math]\displaystyle{ \Delta G = \Delta H - T\Delta S }[/math]
[math]\displaystyle{ \Delta G = -237.1kJ/mol H_2 = -136.5 MJ/kg H_2 }[/math]
