Corrigendum to “Numerical analysis of gas cross-over through the membrane in a proton exchange membrane fuel cell” [J. Power Sources 161 (2006) 371–379]

Estimation of hydrogen crossover through Nafion® membranes in PEMFCs

“…The modelpredicted trends provided good fits to experimental data for the membrane under constant current ageing conditions but the experimental voltage profile was found to have a large phase lag behind the predicted one for the membrane under cyclic ageing conditions. A model for numerical analysis of gas crossover through the membrane in PEMFCs developed by Seddiq et al [27] concluded that the direct reaction between hydrogen and oxygen increases with a decrease in thickness of membrane, and that it mainly occurs at the cathode at low current density conditions. More sophisticated modeling approaches have been presented by Sompalli et al [28] by considering the impact of electrode overlap on membrane degradation, and by Nam et al [29] who presented a numerical gas crossover model, including non-isothermal and two-phase conditions.…”

Reversible and irreversible degradation in fuel cells during Open Circuit Voltage durability testing

“…at open circuit voltage conditions. It is generally thought that chemical degradation, caused by reactant crossover, is most severe under these conditions since partial pressures of the reactant gasses are at their relative maximum values [15,16]. Recent modeling work has also shown that hydrogen crossover is at a maximum at OCV conditions [17].…”

Open circuit voltage durability study and model of catalyst coated membranes at different humidification levels

“…High gas partial pressures are also used in typical accelerated chemical degradation tests such as open circuit voltage (OCV) durability testing where a cell is run without drawing load. Gas partial pressures at the membrane/catalyst layer interface are highest when no current is drawn, as shown in several modeling studies [3,20], because the gasses are not depleted by the electricity producing reactions. The higher pressures naturally lead to higher crossover rates and thus accelerate degradation.…”