POLYANILINE/Zn SECONDARY BATTERY WITH VARIOUS DOPANT ACID AND ITS ELECTROLYTES

• Main Author: Aliakbar, Said
• Format: Theses
• Language: Indonesia
• Subjects: Kimia
• Online Access: https://digilib.itb.ac.id/gdl/view/34110
• Institution: Institut Teknologi Bandung

Study about polyaniline (PANI) as a cathode in the PANI/Zn secondary battery has been performed. Nevertheless, There is still no explanation about the effect of the different dopant acid on battery performance factors. Performance of battery PANI/Zn has been tested on various dopant acid (HXs) and its electrolytes (ZnXs). Battery performance tests were carried out through the charge-discharge processes for 60 cycles at a current of 10 mA. PANI was synthesized using electrodeposition method on the surface of the Graphite Sheets (GS), at 0.7 V relative to the saturated Ag/AgCl in various dopant acid. In this study, three types of acid used, namely, HCl, HBr, and HClO4. PANI-X films have been studied their potential as electrodes in a rechargeable battery system. Here, the battery system consisted of GS|PANI- X|ZnX(electrolytes)|Zn configuration. The measurement results found that the performance of the battery with the electrode of PANI-Cl and PANI-Br were performed better with specific capacity at the first cycle of 59.49 and 49.30 mAh g- 1, respectively, while at 60th cycle were 55.4 and 37.4 mAh g-1, respectively. On the other hand, the battery with the electrode made of PANI-ClO4 had specific capacity of 68.23 mAh g-1, however on the 60th cycle the capacity plummeted to 10.2 mAh g-1. Raman analysis for the PANI-X electrodes before and after used as a battery electrodes were performed in this study. The increase of peak at 1491 cm-1 that indicates of emeraldine base revealed the consumption of proton by Zn metal during charging process. Impedance measurements of PANI-Cl, PANI-Br, PANI-ClO4 battery showed the solution resistance (Rs) were 1.38; 2.56; and 3.03 ?, respectively, while for charge transfer resistance (Rct) were 2.24; 2.97; and 7.71 ?, respectively. This trend might due to the hydration and ionic radii, which are very - large in the case of ClO4 anion, thus the ionic mobility decreases and leads to a higher resistance than in case of other anions.