Current, Concentration and Overpotential Distributions on Columnar Structured Electrodes in a 2D PEMFC Model

The optimization of a fuel cell performance involves the prediction its operation conditions and electrochemical properties for short long-time periods. One topics not studied in detail is influence change surface roughness morphology metallic catalytic layers on working conditions. For platinum anodic catalysts columnar growth was demonstrated after 1 month hydrogen/oxygen continuous at A cm?2. In this sense mass balance equations solved to obtain current overpotential profiles these electrodes adapting curvilinear parametric model periodic columns (trochoid contours). Since they acted as dynamic system, numerical solutions were useful permanently needed profile optimizations. use exact analytical functions instead, reduced large computational times assured information only knowing structure morphology. compared with those smooth (early uses cell) experimental values obtained using 200 cm2 home-made polymeric membrane cell.