Effects of modified flow field on optimal parameters estimation and cell performance of a PEM fuel cell with the Taguchi method

► Applying a 3D model and Taguchi methodology obtains the optimal result. ► Adding cuboid rows in a channel decreases overall deflection. ► Modifying flow field generates more uniform reactant gas concentration distribution. ► The current density was improved at middle and near outlet of a full scale channel. ► The optimal result augments electrical power 30% and reduces pressure drops 275%.