| Popis: |
The present study numerically investigates the influence of reactant gas concentration on the performance characteristics of a proton exchange membrane (PEM) fuel cell. The effect of reactant gas configurations of the electrodes is discussed in terms of performance characteristics viz. cathode water concentration, current density, power density, and overpotential. Our study reveals that cathode water concentration, current density, and subsequently power density has a linear relationship with the concentration of reactant gases. It is found that the cell performance becomes superior with an increase in the concentration of reactant gases. Furthermore, overpotential is observed to be minimum at higher concentrations of reactant gases. The findings of this study bear utility towards designing an efficient PEM fuel cell system that can deliver a higher power density, current density with minimal overpotential. |
