Effect of drying temperature on polyaniline electrode for polyaniline|Zn battery performance

ABSTRACT. Here, we report the effect of various drying temperature of Polyaniline (PAni) on battery PAni|Zn performance. PAni was synthesized using the electrodeposition method on the surface of the graphite sheets (GS), at 0.7 V relative to the saturated Ag/AgCl. PAni is dried with various temperature, 25, 80, 120, and 180 oC, respectively. PAni was characterized by Raman spectroscopy; then the performance Pani battery was studied in a rechargeable battery system. The measurement results found the PAni|Zn battery with 25 oC temperature drying of PAni was a good performance which the capacity density stable at 175–105 mAh g-1 until 100 cycles. Raman study showed that high-temperature drying resulted in a cleavage peak at 1188 cm-1 and increased peak intensity at 1495 cm-1. This vibrational mode appears as a stretching ν(C-C) on the semi quinonoid ring and ν(C=N) on the quinoid ring. This phenomenon indicated the changing structure of PAni to be Emeraldine base form. KEY WORDS: Aniline, Annealing, Polyaniline, Rechargeable battery, Temperature effect Bull. Chem. Soc. Ethiop. 2019, 33(3), 551-559. DOI: https://dx.doi.org/10.4314/bcse.v33i3.1