Abstract
Fuel cell technology is one of the most promising, emissions free, environment friendly energy conversion technology popularly used for various commercial applications like electrical vehicles, building cogeneration and standby power supply. Power density and efficiency of Proton Exchange Membrane (PEM) fuel cell is depends on its terminal voltage and terminal voltage in term is a function of activation polarization, ohmic polarization and concentration polarization. At light loads, the heavy terminal voltage drop is due to activation polarization and the activation polarization is depends on the double layer capacitance formed between electrodes and electrolyte. In this paper MATLAB simulink model of PEM fuel cell is presented to investigate effect of double layer capacitance on performance of PEM fuel cell. Performance of the developed model is validated with the data obtained from single 25 cm2 active area PEM fuel cell.
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