One pot synthesis of poly m-toluidine incorporated silver and silver oxide nanocomposite as a promising electrode for supercapacitor devices.

The design and fabrication of novel electrodes with strong electrochemical responses are crucial in advanced supercapacitor technology. In this study, a poly(m-toluidine)/silver-silver oxide (PMT/Ag-AgO) nanocomposite was prepared using the photopolymerization method. Various characterization techniques were employed to analyze the prepared nanomaterials. The resulting structure of Ag-AgO minimizes ion diffusion distances, increases active sites, and accelerates redox reactions. The electrochemical response of PMT and PMT/Ag-AgO electrodes was evaluated in three different electrolyte solutions (NaSO, HSO, and HCl). The specific capacitance of PMT/Ag-AgO nanocomposite was found to be higher than that of PMT alone. Among the tested electrolytes, HCl exhibited the highest specific capacitance of 443 F g at a gravimetric current density of 0.4 A g, surpassing HSO (104 F g) and NaSO (32 F g). Also, the PMT/Ag-AgO nanocomposite has demonstrated good cycling stability. It exhibited a high specific power density of 156 W Kg and a specific energy density of 1.8 Wh Kg. These results highlight the potential of the prepared PMT/Ag-AgO nanocomposite as a nanoelectrode material for high-performance supercapacitors.