Electrochemical properties of Zn/orange dye aqueous solution/carbon cell

An investigation is made of the electrochemical properties of a Zn/orange dye aqueous solution/carbon cell. In this cell, a solution of 3 wt.% orange dye (C17H17N5O2) in distilled water is used as the electrolyte and zinc and carbon rods serve as electrodes. The cell is fabricated in a cylindrical glass vessel and has a length and a diameter of 4 and 2 cm, respectively. The discharge voltage–current, charge voltage/current–time and discharge voltage/current–time studies are made. It is found that the cell is rechargeable. The open-circuit voltage and short-circuit current of the fully charged cell is 1.5 V and 0.45 mA, respectively. The efficiency of current discharge/charge is 67%. The discharge voltage/current–time characteristics exhibit stable and constant behaviour.