Fabrication of an electrochemical cell based on Rhodamine B Dye for low power applications

In this study an electrochemical cell based on Rhodamine B as an organic dye was fabricated for the first time. Several electrochemical measurements was used to investigate the electrochemical properties of Zinc/Rhodamine B aqueous solution/carbon. These electrochemical measurements include: polarization charge/discharge characteristics of the voltage/current versus time, life cycles electrochemical and impedance measurements. It is found that the Rhodamine B as organic dye-electrochemical cell is rechargeable and stable throughout these measurements. The measured values of open-circuit voltage and short-circuit current of the studied cell were 0.969 V and 0.416 mA, respectively. The calculated power shows a maximum peak that approaches 0.1068 mW at 0.511 V. The electrical energy and the capacity of the Rhodamine B cell were -186.991 kJ/mole and 25.535 kC (7.093 Wh), respectively. The impedance measurements showed the interaction between the electrochemical cell components. The Rhodamine B cell showed stability and constant charge/discharge behavior appeared in the voltage/current-time curves and throughout the life cycle measurements. The Rhodamine B electrochemical cell can be used as a candidate for low power applications, electrochemical sensor and electronic applications.