Modeling of passive alkaline membrane direct methanol fuel cell

摘要: Abstract In this study, a two-dimensional two-phase model is developed for passive alkaline anion exchange membrane direct methanol fuel cell (AAEM-DMFC) to understand the role of micro-porous layer (MPL) and effect porous media wettability on species transport. The results indicate that different regions polarization curve exhibit dependence feed concentration. Anode MPL can act as diffusion barrier retard mass transport thus mitigate crossover. This becomes more significant by increasing anode hydrophobicity, which facilitates use highly concentrated fuel. However, insertion cathode changes in layers show insignificant effects Moreover, influence water depends current density. Less crossover be achieved reducing or enhancing back-diffusion through membrane. Ultimately, favorable distribution lower might designing with desired properties. simulation presented study may help guide optimization management mitigation AAEM-DMFC.