MODEL OF MASS TRANSPORT AND CURRENT DENSITY DISTRIBUTION IN ELECTRODE OF PEM FUEL CELL USING MAXWELL-STEFAN APPROACH

摘要

The paper presents a finite element model of mass transport and electrochemistry in a polymer electrolyte fuel cell at a constant temperature, Derived is a model of transport of the gases in the interdigitated gas distributor and porous layer based on Maxwell-Stefan equations in common with consequent computation of current density and electric potential distribution, The two-dimensional nature of gas transport within the fuel cell is discussed and plots of gas mole fraction and water contents are presented. The model is illustrated on an example.