Current-voltage characteristic of anion-exchange membrane in monosodium phosphate solution. Modelling and experiment

A current-voltage characteristic of a Neosepta AMX membrane in a monosodium phosphate solution was investigated experimentally and theoretically. It is shown that the experimental curve has two sections of the overlimiting "plateau" and, accordingly, two limiting current densities. This feature is not observed in the presence of electrolytes, such as sodium chloride. For a better understanding of the phenomenon, a one-dimensional three-layer...