Development of Semi-Empirical Cell Voltage Model for Direct Methanol Fuel Cell

초록

A new semi-empirical model is established to describe the cell voltage of a direct methanol fuel cell (DMFC) as a function of current density. The proposed model focuses on very unfavorable conditions for the cell operation, i.e. low methanol solution concentrations and relatively low cell temperatures. They, however, have not accurate term of anode polarization. The proposed model takes into account new contribution which represents the anode polarization effect. A newly developed semi-empirical equation, includes the methanol crossover effect that plays a major role in determining the cell voltage of DMFC. The model equation is validated experimental data over a wide range of a methanol concentration and temperature.