The space charge layer thickness calculation in NaCl and KCl water solutions

Abstract

This paper is devoted to experimental study and theoretical simulate of the electrical double layer in electrolytes. The primary aim of this paper is to calculation the space charge layer. For it the Poisson equation was integrated with taking into account the shielding of the electrodes with taking into account the electrodes shielding by salt ions and water molecules. The calculation of the thickness of the space charge layer is given for case when the shielding by the ions of the electrode potential and the water molecules of the micropotential ions are account of. Experimental voltage-current characteristics for the solutions of NaCl and of KCl are presented. It is shown that the rapid growth of electric current in the electrolyte solution starts at the potentials when the space charge layer thickness equal about to the asymptotic value. The method for determining ion temperature from the experimental voltage-current characteristics of the electrolyte solution was proposed. Refs 12. Figs 3. Tables 1.