d_gde 1e-7[m] "Thin GDE Thickness" V_cell 1[V] "Cell voltage" T_amb 25[degC] "Ambient temperature" RH_amb 0.65 "Relative humidity in cathode" i0_refa 1000[A/m^2] "Reference exchange current density, anode" i0_refc 10[A/m^2] "Reference exchange current density, cathode" Av 1e7[1/m] "Active specific surface area of thin GDEs" htc 50[W/m^2/K] "Heat transfer coefficient"