Effects of orange dye concentration on electrochemical properties of zinc/orange dye aqueous solution/carbon cells

Electrochemical properties of a zinc/orange dye aqueous solution/carbon cells have been investigated for different concentrations of orange dye. In this cell, orange dye is used as an electrolyte and zinc and carbon rods serve as electrodes. As a cell compartment the cylindrical glass vessels of 4.0 cm in length and with a diameter 2.5 cm are used. Effects of concentration have been examined on the discharge voltage-current, charge voltage/ current-time and discharge voltage/current-time characteristics. The open-circuit voltages and short-circuit currents of cells are observed as dependent on the orange dye concentration. The efficiency of current discharge/charge is found larger at higher concentration of the dye. The discharge voltage/current-time characteristics exhibit stable and constant behavior at all concentrations.