Modelling and Controlling of ion transport rate efficiency in Proton exchange membrane (PEMFC), alkaline (AFC), direct methanol (DMFC), phosphoric acid (PAFC), direct forming acid(DFAFC) and direct carbon (DCFC) fuel cells

Abstract

Ion transport rate of DFAFC, PAFC, AFC, PEMFC, DMFC and SOFC fuel cells have been studied. AFC which uses an aqueous alkaline electrolyte is suitable for temperature below 90 degree and is appropriate for higher current applications, while PEMFC is suitable for lower temperature compared to others. Thermodynamic equations have been investigated for those fuel cells in viewpoint of voltage output data. Effects of operating data including temperature (T), pressure (P), proton exchange membrane water content (λ) , and proton exchange membrane thickness ( on the optimal performance of the irreversible fuel cells have been studied. Performance of fuel cells was analyzed by simulating polarization and power curves for a fuel cell operating at various conditions with current densities.

Increased efficiency of a fuel cell using h-BN electrodes and Teflon polymer electrolyte [-C2F4-]n

“…Flooding appears in both cathode and anode electrodes with three mechanisms as; (a) Water generated in the cathode side of the membrane by the electrochemical reaction (ORR), (b) electroosmotic drag and (c) over-humidified reactant gases. Anode flooding is much longer than the cathode flooding (Mollaamin et al, 2019). Although flooding in the cathode is much common compared to anode, flooding on the anode side of the membrane can also have serious consequences on the operation, performance and degradation and due to low fuel flow rates, removing H2O from anode is much more difficult compared to cathode.…”