Abstract
A room temperature synthesized polyazomethine (PAZ) series via polycondensation route comprising monomer as 5-[4-(5-formylfuran-2-yl)phenyl]furan-2-carbaldehyde (III) and various diamines to engineer PAZ-1 to PAZ-5 polymers. Physico-chemical properties of as-prepared PAZ series have confirmed by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy dispersive X-ray analysis (EDAX), transmission electron microscopy (TEM) and spectroscopic techniques. In FTIR, –CH=N– peak at 1600 cm−1 attributed to the successful conversion of dicarbaldehyde (III) and diamines into polyazomethine. The amorphous nature of PAZ series is depicted by XRD diffractograph. The marigold like morphology of polyazomethines has revealed in FESEM and TEM images. The chemical composition and elemental distribution on PAZ surface has mapped using EDAX technique. The electrochemical activity of as-prepared polyazomethine electrodes has investigated by cyclic voltammetry (CV), galvanostatic charge discharge (GCD) and electrochemical impedance spectroscopy (EIS) techniques. The supercapacitive performance of PAZ-1 to PAZ-5 electrodes in various electrolytes as NaOH, KOH, Na2SO4, and LiCl by varying concentrations, the PAZ-2 electrode exhibits elevated specific capacitance (Cp) of 831 Fg−1, specific energy (SE) 22.99 Whrkg−1, specific power (SP) 82.87 KWkg−1 in optimum 1 M NaOH electrolyte. The distinguished PAZ-2 electrode after successive 500 cycles has delivered exceptional stability, 71.65 % in 1 M NaOH.
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