Electrical Work in Fuel Cells

In an electrochemical cell, the electrical work is done owing to the flow of electrons through an electrical load circuit under the effect of a potential difference between the two electrodes or the voltage of the cell. When electrical charges flow through an external load circuit owing to the potential difference E, the fuel cell electrical work is given as 

If Me is the number of electrons per molecule of reactant transferred, then is the total number of electrons that pass through the external circuit, where Na is the Avogadro number, defined as the number of molecules per mole of substance and is a constant value, = 6.022 x 1(F3. If e is the charge of one electron, then the total charge that flows through the circuit is given by 

Substituting Equation 4.13 into Equation 4.12, the electrical work is given 

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