Electric Current Value Decreasing due to H_2 and Cl_2 Gas Formation near Electrodes during Electrolysis Calculation

Abstract

Our investigations show that the degradation rate of aluminium (Al) cylindrical anodes increases with the temperature of concentrated NaCl solution increasing from 20°C to 100°C during electrolysis at an electric current density of 3,000 A/m2. The general quantity of Al3+ ions also increases with temperature. Electric current value also increases with temperature. The general quantity of H' and Cl' ions decreases during electrolysis at all temperatures since H2 and Cl2gases are formed near electrodes. We have calculated that it decreases the electric current value by 1.3%. The degradation rate of copper (Cu) cylindrical anodes decreases with the temperature of concentrated NaCl solution increasing from 20°C to 100°C during electrolysis at an electric current density of 3,000 A/m2. The general quantity of Cu+ and Cu2+ ions also decreases with temperature. We guess that the only reason for the increasing electric current value is the average charge of copper ions, which increases from +1 at room temperature to +1.5 at 100°C and to +2 at 180°C.