I_tot intop_cc(fc.nIs) "Total cell current" P_phil -(d(fc.phil,x)*fc.Ilx+d(fc.phil,y)*fc.Ily+d(fc.phil,z)*fc.Ilz) "Local power loss, ion transport" P_phis -(d(fc.phis,x)*fc.Isx+d(fc.phis,y)*fc.Isy+d(fc.phis,z)*fc.Isz) "Local power loss, electron transport" P_act_h2 fc.iv_h2gder1*fc.eta_h2gder1 "Local power loss, hydrogen oxidation activation" P_act_o2 fc.iv_o2gder1*fc.eta_o2gder1 "Local power loss, oxygen oxidation activation" eta_phil (intop_h2_gde(P_phil)+intop_mem(P_phil)+intop_o2_gde(P_phil))/I_tot "Cell-averaged electrolyte transport overpotential" eta_phis (intop_h2_gde(P_phis)+intop_o2_gde(P_phis))/I_tot "Cell-averaged electron transport overpotential" eta_act_h2 intop_h2_gde(P_act_h2)/I_tot "Cell-averaged hydrogen oxidation activation overpotential" eta_act_o2 intop_o2_gde(P_act_o2)/I_tot "Cell-averaged oxygen reduction activation overpotential"