Numerical modeling and investigation of gas crossover effects in high temperature proton exchange membrane (PEM) fuel cells

► A gas crossover model is developed for a PBI membrane based HT-PEMFC. ► The model considers dissolution of reactants into electrolyte phase in the CLs. ► Aim of the work is to investigate the effects of gas crossover on cell performance. ► Detailed thermal analysis of HT-PEMFC is carried out.