Some of the OpenPNM developers from McGill and Juelich have recently published a new paper using OpenPNM in the Journal of the Electrochemical Society, which is available open-access. This paper is an important milestone for several reasons. Firstly, it couples multiple transport processes into a single ‘multiphysics’ simulation of a fuel cell electrode. Specifically, it includes diffusion of O2 and H2, conduction of electrons, conduction of protons, and reaction kinetics via the Bulter-Volmer model. The paper outlines the algorithm we developed to couple these equations and iteratively solve the resulting non-linear system. Second, this model treats the membrane and catalyst layers as continua, while modeling the diffusion layers as pore networks. Combining pore network and continua representations into a single framework opens up many possibilities for modeling multi-scale domains with minimal computational cost.