Analysis on Effect of Porosity of Porous Separator on Various Phenomena in Single Cell of PEFC under High Temperature Condition

Abstract

It is important to clarify the coupled phenomena in PEFC operated at the temperature of around 100 °C, which is the target temperature during 2030 - 2035 according to NEDO road map. In this study, a porous separator was investigated to achieve a thinner separator that contributes to the reduction in weight and volume of PEFC system. A numerical simulation using 3D model with the porous separator was conducted to clarify the distributions of molar concentration of H2 and O2 as well as current density on the interface between PEM and catalyst layer.