@article{30582, keywords = {Mathematical model, nafion, Contamination, Hydrogen Pump, Ion‐exchange Membrane, Multicomponent Diffusion Equations, Stefan–Maxwell Equations}, author = {Adam Z Weber and Charles Delacourt}, title = {Mathematical Modelling of Cation Contamination in a Proton-exchange Membrane}, abstract = {

Transport phenomena in an ion‐exchange membrane containing both H+ and K+ are described using multicomponent diffusion equations (Stefan–Maxwell). A model is developed for transport through a Nafion 112 membrane in a hydrogen‐pump setup. The model results are analysed to quantify the impact of cation contamination on cell potential. It is shown that limiting current densities can result due to a decrease in proton concentration caused by the build‐up of contaminant ions. An average cation concentration of 30 to 40% is required for appreciable effects to be noticed under typical steady‐state operating conditions.

}, year = {2008}, journal = {Fuel Cells}, volume = {8}, pages = {459 - 465}, month = {12/2008}, issn = {16156846}, doi = {10.1002/fuce.200800044}, language = {eng}, }