Performance Evaluation of Graphene-Supported Electro-Catalysts in Proton Exchange Membrane (PEM) Fuel Cells

The graphene-supported electro-catalysts in proton exchange membrane (PEM) fuel cells were evaluated in this study, and the results show that the output of these cells is positively correlated with the current density, reaching a maximum of about 2.5 W/cm². Problems with energy conversion may be lurking, though, because the efficiency is still very low. Additional investigation into the catalysts' electrochemical dynamics and a reevaluation of the model's loss parameters are warranted in light of the discrepancy between power output and efficiency. In order to enhance the energy efficiency and overall performance of PEM fuel cells, future research should focus on improving the catalyst composition, refining the operating conditions, and using more sophisticated modeling tools.