Abstract
In this paper, the effect of an anionic (polyvinyl pyridine iodide, AM-1) and cationic (polystyrene sulfonate sodium, CM-1) exchange polymer layer on the chronopotentiometry (CP) and current voltage curves ( I–V) of a charged composite membrane are investigated. Also, the ion transport near the interface between electrolyte and ionic exchange polymer membranes (anionic and cationic ones) and a charged mosaic polymer composite membrane is studied. The results show that both anionic and cationic polymer exchange membranes exhibit a lower voltage drop over the range of applied current density and possess favorable industrial application potentials, especially at a low KCl concentration. While the charged mosaic polymer composite membrane did not show any current–voltage change, irrespective of the type and the concentration of used electrolyte. CP and I–V measurements are effectively used to give some fundamental understanding for ion transport behavior of an ion exchange polymer membrane near the interface.
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