Analysis of Membrane-Electrode Assembly Performance with Time in the PEMFC Somayeh

The main objective of this work is to extract information on the internal behavior of the polymer electrolyte membrane fuel cell with time under a standard membrane-electrode assembly (MEA) procedure. A procedure was developed by US fuel cell council (USFCC) which contain a combination of constant current and voltage control and cyclic potential processes. The MEA performance was evaluated by the analytical model with time. Results indicated that the oxygen reduction kinetic is improved with time, especially in the first few hours. The results also show that ohmic and concentration polarizations are decreased with time. The extent of this reduction depends on the applied voltage or current with time.