Effect of design and operating parameters on dynamic response of a micro direct methanol fuel cell

► In this paper, we research the effect of design parameter and operating conditions on dynamic behavior of a μDMFC. ► Different load conditions were applied to the cell to test effect of stainless steel mesh, cell orientation, methanol concentration and methanol flow rate on transient performance of the cell. ► Experimental results indicate that methanol crossover through proton exchange membrane (PEM), methanol transportation in anode, removal of CO2 bubbles and heat loss brought away by methanol solution are four crucial causes influencing dynamic behavior of the cell.