Modeling the cation transport in an operating polymer electrolyte fuel cell (PEFC)

摘要: Abstract A computational fluid dynamics model is developed to investigate the multicomponent cation transport in polymer electrolyte membranes and predict performance degradation of fuel cell (PEFC) due cationic contamination. Maxwell–Stefan approach implemented by modifying Nernst–Planck equations species membrane. Langmuir isotherms are used non-ideal adsorption Cation shows good agreement with experimental data found literature. Following validation model, it incorporated a PEFC framework, which solves for mass, momentum, charge conservations. Both side air impurities considered analyses, show that current density drops from 0.9 0.7 A/cm 2 whereas impractical values as low 0.05 A/cm , at steady-state. Effect impurity on water membrane also investigated cathode dry-out occurs decreased generation case