A Mathematical Model of a Direct Propane Fuel Cell

Table 1

Operational, electrochemical, and design parameters for simulations.

Property	Value
Temperature,	423–503 K
Pressure,	101.3 k Pa
Proton–ZrP diffusivity,	3.1 × 10^−12 m^2 s^−1 [29]
Proton–water diffusivity,	2.9 × 10^−10 m^2 s^−1 [12]
Ionic conductivity in membrane,	5.0 S m^−1 [24]
Electrical resistivity in membrane,	1.0 × 10^16 Ω m
Charge transfer coefficients, and	1.0 [30]
Equilibrium potential of catalyst phase at the anode,	0.136 V [1]
Equilibrium potential of catalyst phase at the cathode,	1.229 V
Equilibrium potential of electrolyte phase,	0.136 V
Apparent bulk density of carbon catalyst support,	0.259 gcatalyst
Specific surface area of carbon catalyst support in the anode and cathode,	255
Gas phase volume fraction in anode and cathode,	0.5
Electrolyte phase volume fraction in anode and cathode,	0.4
Effective particle diameter in anode and cathode,	5 μm
Land width,	2–8 mm
Anode and cathode thickness, ThA, ThC	200–400 μm
Membrane thickness,	100–200 μm
Fluid channels width in bipolar plates	0.4 mm