|
| Symbol | Parameters | Value |
|
| L | Flow field length/m | 0.032 |
| W_ch | Flow field width/m | 0.032 |
| H_gdl | GDL thickness/m | 3.80e − 04 |
| H_gdl | GDL thickness/m | 3.80e − 04 |
| H_electrode | Porous electrode thickness/m | 5.00e − 05 |
| H_membrane | Membrane thickness/m | 1.00e − 04 |
| RHa | Relative humidity of anode | 0.8 |
| RHc | Relative humidity of cathode | 0.8 |
| P_sat | Saturated vapor pressure/Pa | According to calculate |
| P_a | Anode pressure/Pa | 2.5e5 |
| P_c | Cathode pressure/Pa | 2.5e5 |
| MH2 | Hydrogen molar mass/kg·mol−1 | 0.002 |
| MH2O | Water molar mass/kg·mol−1 | 0.018 |
| MO2 | Oxygen molar mass/kg·mol−1 | 0.032 |
| MN2 | Nitrogen molar mass/kg·mol−1 | 0.028 |
| xH2Oa_in | Anode water vapor pressure/Pa | RHa ∗ P_sat/P_a |
| xH2_in | Anode hydrogen pressure/Pa | 1-xH2Oa_in |
| xH2Oc_in | Cathode water vapor pressure/Pa | RHc ∗ P_sat/P_c |
| xO2_in | Cathode oxygen pressure/Pa | 0.21 ∗ (1-xH2Oc_in) |
| xN2_in | Cathode nitrogen pressure/Pa | 0.79 ∗ (1-xH2Oc_in) |
| D_H2_H2O | H2-H2O binary diffusion coefficient/m2·s−1 | 1.11e − 4 (calculated) |
| D_N2_H2O | N2-H2O binary diffusion coefficient/m2·s−1 | 3.09e − 5 (calculated) |
| D_O2_N2 | O2-N2 binary diffusion coefficient/m2·s−1 | 2.89e − 5 (calculated) |
| D_O2_H2O | O2-H2O binary diffusion coefficient/m2·s−1 | 3.41e − 5 (calculated) |
| mu_anode | Anode viscosity/Pa·s | 1.19e − 05 |
| mu_cathode | Cathode viscosity/Pa·s | 2.46e − 05 |
| kappa_gdl | GDL permeability/m2 | 1e − 12 |
| kappa_cl | Permeability (porous electrode)/m2 | 1e − 13 |
| sigma_gdl | GDL electric conductivity/S·m−1 | 5000 |
| sigma_cl | CL electric conductivity/S·m−1 | 5000 |
| sigma_m | Membrane electric conductivity/S·m−1 | 2 |
| eps_gdl | GDL porosity | 0.3 |
| eps_cl | Porous electrodes porosity | 1-eps_gdl-eps_l |
| eps_l | Electrolyte phase volume fraction | 0.2 |
| eps_i | Ionomer volume fraction | 0.27 |
| cH2_ref | Hydrogen reference concentration/mol·m3 | 56.4 |
| cO2_ref | Oxygen reference concentration/mol·m3 | 3.39 |
| stoich_a | Anode stoichiometry | 1.5 |
| stoich_c | Cathode stoichiometry | 3 |
| T | Cell temperature/K | 343.15 |
| V_cell | Cell voltage/V | 0.9 |
| i_cell | Current density/A·cm2 | According to calculate |
| A_cl | Catalytic layer area/m2 | W_ch ∗ L |
|
