A two-dimensional

two-phase across the channel computational model of proton exchange membrane fuel cell(PEMFC) is established.It accounts for all major transport phenomena

including water and proton transport through the membrane

electrochemical reaction

transport of electrons

transport and phase change of water in the gas diffusion electrodes

and diffusion of multi-component gas mixtures in the electrode.The model can be used to research the effects of flow field

diffusion layer

catalyst layer and membrane on the performance of PEMFC

so the cell structure can be optimized.