Example Problem Statement:

The operating temperature of a PEMFC typically ranges from $30C$ to $100C.$ Assuming an ideal gas:

a$)$ Calculate the maximum efficiency limit of a PEMFC operating at standard pressure and $30C.$

b$)$ Calculate the maximum voltage, E$,$ of the fuel cell.

Example Problem Solution:

Standard enthalpies and Gibbs Energies of formation are provided in Table C$.4$ of Smith, Van Ness, and Abbott. Since the temperature of interest is below $100C,$ properties of water in the liquid phase will be used.

$\backslash$table$[[$Chemical Species,State,$Hf,\frac{298}{J}mo{l}^{-1},\frac{G^{f,298}}{J}mo{l}^{-1}$