Comparative Study of Rechargeable Cell Battery from PANI- Cl/Zn Film with Various Concentration of Electrolyte and its Characterization

• Main Author: Setiawati, Octaviani
• Format: Final Project
• Language: Indonesia
• Subjects: Kimia
• Online Access: https://digilib.itb.ac.id/gdl/view/38055
• Institution: Institut Teknologi Bandung

Polyaniline (PANI) is organic polymers which has conductivity can be varied by doped in acid solution (HX). PANI doped by HCl has high conductivity compared with other protic acid. PANI form Emeraldine salt was made for material electrode because it has revesible redox reaction. PANI-Cl film created by electropolymerization process into graphite synthetic surface with constant potential 3 V for 30 minute so the mass of the resulting film PANI ± 0,06 g. Series cell battery of PANI-Cl/Zn with electrolyte solutions ZnCl2 has good battery performane. Nevertheless,there is no explanation about investigating cells battery PANI-Cl/Zn with various concentration of electrolyte. In this study, performance of battery has been tested through cell fabrication from PANI-Cl as cathode, electrolyte solutions ZnCl2 (0,1 M, 1 M and 2 M) at pH 5 containing additive Triton X-100, paper filter as separator and Zinc plate as anode. The measurement results found that cell battery of PANI-Cl/Zn with electrolyte ZnCl2 1 M were performed better with specific capacity at the first cycle of 66,85 mAh g-1and decrease at sixth cycle to 47,55 mAh g-1. Meanwhile on ZnCl2 0,1 M and 2 M have specific capacity at the first cycle and sixth cycle at 19,58 mAh g-1 and 24,63 mAh g-1 to 4,74 mAh g-1 and 6,76 mAh g-1. Characterization of PANI-Cl measured by FTIR with peak at 1574,5 cm-1 showed bend mode of C=C at quinoid ring, decreasing intensity when PANI-Cl after used as a battery electrodes. Then, through Raman spectra showed a peak at 1497 cm-1 that indicated vibration mode of C=N by Emeraldine salt which lossing proton when Zn oxidized. EIS gave impedance measurement, with solution resistance (Rs) at ZnCl2 0,1 M, 1 M and 2M were 8,04 ohm, 7,14 ohm and 7,10 ohm. Respectively, while for charge transfer resistance (Rct) 5,77 ohm, 6,19 ohm and 6,25 ohm. This trend might due to the high concentration of electrolyte solutions. Which is depend on amount of ion that contribute transfer electron. A good battery performance was showed by PANI-Cl/Zn with electrolyte solutions ZnCl2 1 M because of smallest total resistance compared to ZnCl2 0,1 M and 2 M.