An Investigation of Direct Hydrocarbon (Propane) Fuel Cell Performance Using Mathematical Modeling

Figure 9

The effect of the water diffusivity coefficient in the electrolyte phase, (m²/s), on the polarization curve for a direct propane fuel cell (DPFC) model at 150°C and 1 atm. The values of (m²/s) for the above three cases were represented by the following symbols: (i) open triangles: 2x10⁻¹⁰ m²/s, (ii) solid diamonds: 2x10⁻⁸ m²/s (reference case), and (iii) open circles: 2x10⁻² m²/s. All the other parameters were the same as the reference case mentioned in Table 1.