Influences of operational factors on proton exchange membrane fuel cell performance with modified interdigitated flow field design

► Using 3D model and Taguchi method in interdigitated channel gets optimal performance. ► Adding rectangular parallelepipeds increases the electrochemical reaction. ► Novel design generates more uniform current density and concentration distribution. ► The rectangular parallelepiped number over 8 has little enhancement for net power. ► The net power of the novel design 26% more than that of the original one.