A Mathematical Model of a Direct Propane Fuel Cell

Figure 7

Electrical potential profiles in the -direction for the electrolyte and catalyst phases located at the middle of the domain -direction for the cathode and anode catalyst layers and membrane layer. The arrows point in the direction of the ordinate scale that applies to each of the three curves. (a) Proton migration plus diffusion within the electrolyte phase (the present model) (b) Proton migration only within the electrolyte phase [5].

(a)

(b)