A one-dimensional two-phase model has been developed for a direct methanol fuel cell (DMFC) and flowing electrolyte - direct methanol fuel cell (FE-DMFC). The model has been compared to experimental data found in literature and corresponds well. Using this model, the performance of the DMFC and FE-DMFC are evaluated and compared to one another as well as to their respective single phase models. It has been found that there is a substantial difference between a two-phase and single phase model. Furthermore, the FE-DMFC outperformed the DMFC when it came to methanol inlet concentrations and varying operating temperatures due to the FE-DMFC's ability to reduce the methanol crossover.

Additional Metadata
Keywords Carbon dioxide, DMFC, Flowing electrolyte, Mathematical modeling, Two-phase
Persistent URL dx.doi.org/10.1115/FuelCell2011-54449
Conference ASME 2011 9th International Conference on Fuel Cell Science, Engineering and Technology. Collocated with ASME 2011 5th International Conference on Energy Sustainability, FUELCELL 2011
Citation
Ouellette, D. (David), Colpan, C.O. (C. Ozgur), Matida, E, & Cruickshank, C. (2011). Modeling of carbon dioxide formation in flowing electrolyte-direct methanol fuel cells. Presented at the ASME 2011 9th International Conference on Fuel Cell Science, Engineering and Technology. Collocated with ASME 2011 5th International Conference on Energy Sustainability, FUELCELL 2011. doi:10.1115/FuelCell2011-54449