Mathematical Model of a Direct Methanol Fuel Cell (DMFC)
HU Gui lin, FAN Jian ren, CEN Ke fa (Institute of Thermal Power Engrg., Zhejiang Univ., Hangzhou 310027, China)
A two dimensional across the channel mathematical model for simulation of a direct methanol fuel cell is described. The model accounts simultaneously for electrochemical kinetics, hydrodynamics, and multicomponent transport. The two dimensional distributions of concentrations of reactants, the two dimensional distributions of current densities, the crossover flux of methanol fromthe anode to the cathode, and current voltage curve for the fuel cell have been calculated. The obtained results indicate that the concentrations of reactants in the catalyst layers in front of the current collectors are very low; the current density at the edges of the channels is many times greater than the mean current density. Figs 5, table 1 and refs 9.