Prof. Jeff Gostick gave a talk to full room during the plenary session of the Fuel Cell symposium at the Fall meeting of the Electrochemical Society in Cancun this past October. The talk was focused on the use of pore network models to simulate complete fuel cell operation, include both anode and cathode GDLs, catalyst layers and ionomer separator. The talk illustrated the important impact of the discrete nature of water clusters in the fuel cell electrode, which leads to localized reactant starvation, hindered proton production, and an overall increase in ohmic losses. The work was entirely performed in OpenPNM. The slides for the talk are available here.