A multiscale model for proton exchange membrane fuel cells with order-structured catalyst layers

•A multiscale model to investigate the mass transport characteristics of PEMFCs with ordered catalyst layers is developed.•Local oxygen transport resistances show an inverse proportional function of Pt loading.•A logarithmic normalized method is proposed to calculate local oxygen transport resistance in the limiting and non-limiting current conditions.•The ionomer-Pt interfacial resistance is dominant in the limting current conditions.