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Updated: Aug 7, 2026

Merging Ion Concentration Polarization between Juxtaposed Ion Exchange Membranes to Block the Propagation of the Polarization Zone
Published on: February 23, 2017
Current-voltage curves for a cation-exchange membrane in methanol-water electrolyte solutions
1Dpto. Física Aplicada I, Facultad de Ciencias Físicas, Universidad Complutense de Madrid, Ciudad Universitaria, Madrid, 28040, Spain. vmabarra@fis.ucm.es
Abstract:
The current-voltage curves for a cation-exchange membrane separating two equal methanol-water electrolyte solutions were determined under different experimental conditions. From these curves, the values of the limiting current density, I(L), were determined. The influence of the volume percentage of methanol in the solvent on the results was analyzed. The presence of methanol in the solutions was shown not to affect the shape of the current-voltage curves typical of aqueous solutions. However, the system resistance and the values of the limiting current density were both greatly influenced by the content of methanol. Thus, the value of the resistance increased and the limiting current decreased with increasing methanol content of the solution.
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