(THE EFFECT OF SALT BRIDGE ELECTROLYTE VARIATION TOWARDS Cu/Zn GALVANIC CELL IMPEDANCE)

• Main Author: Widitya (NIM : 105 01 064), Arsandi
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/5787
• Institution: Institut Teknologi Bandung

Abstract: <br /> <br /> <br /> <br /> <br /> A battery consist of three main parts, namely anode or the negative pole, cathode or the positive pole and electrolyte. The electrolyte role in a battery is to maintain the electrical neutrality both side of the electrodes. Electrolyte consists of cation and anion that has different ionic mobility in solution. A battery has an impedance that caused by battery components itself including the electrolyte. This impedance called internal impedance. In this research the effect of KCl, KNO3 and NaCl electrolyte in a simple Cu/Zn galvanic cell was investigated. The cell impedance analysis performed by Electrochemical Impedance Spectroscopy (EIS) method and the maximum current density that could be delivered at cell nominal potential performed by Galvano Cyclic Voltammetry method. The result showed that Cu/Zn galvanic cell with KCl as the electrolyte in the salt bridge has the least cell impedance value. This data was consistent with the maximum current density measurement. This information could be used as a basis on electrolyte selection for improving battery performance.