Numerical modelling of CO poisoning induced sustained oscillations in the anode potential of a PEM fuel cell

DAVID A. LEVITÁN; PABLO D. GIUNTA

Buenos Aires

Encuentro; 20th Topical Meeting of the International Society of Electrochemistry; 2017

A dynamic 1-D model for the simulation of the oscillatory behaviour in the potential of the anode of a PEM fuel cell under constant current conditions and CO impurities in the H2 inlet is proposed. The model is built upon the electrostatic, chemical/kinetic and thermodynamic principles underlying the operation of a fuel cell, without any empirical fitting variables introduced. The model is able to capture the fenomenon of the oscillatory behaviour while giving insight into the effect of the composition and interconnected kinetics between the HOR and CO-electrooxidation.