A RAMAN SPECTROSCOPY STUDY OF THE POLYANILINE ELECTRODE ON ZN-POLYANILINE RECHARGEABLE BATTERIES

Due to its limiting factor of the cycle-life on Zn–polyaniline (PANI) rechargeable battery, the surface morphology and electrochemical properties have been extensively investigated. However, there are no studies that found on the chemical structure of PANI electrode before and after used in the battery with spectroscopy. Here, the Zn-PANI Battery was tested through a 60-cycle discharging process using 10 mA fixed current. The Open Circuit Voltage (OCV) at this condition was ± 1.3 V. The Raman spectra at 488 nm on PANI discharge showed increasing intensity at 1495 cm υ(C=N). Furthermore, the new peak appeared on the band at 1212 cm υ(N=Q=N) and 1166 cmυ(CH), related to mode on the benzenoid ring. This investigation indicated the formation of Emerald in Bases (EB), caused by the consumption of protons by Zn metal during the filling process.