Synthesis, spectral characterization and electrochemical behavior of oxalic acid doped polyanilines

Polyanilines doped with different concentrations of oxalic acid have been synthesized by oxidative chemical polymerization using potassium perdisulfate as oxidizing agent. The effect of dopant on the kinetics of polymerization has been studied by UV-VIS spectroscopy. The presence of oxalic acid in the polymer has been studied by FTIR, and morphology by SEM and TEM. The thermal stability of the polymer was investigated by TGA and degree of crystallinity of polyaniline was studied by XRD. The electrochemical behaviour has been studied by cyclic voltammetry (CV) and the phenomenon of charge transport and capacitance was examined by Electrochemical Impedance Spectroscopy (EIS). The morphological study shows the particles to be of nanosize and EIS studies show that these samples have significant double layer capacitance (Cdl) and can be used as capacitors. (c) 2019 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the International Conference On Impact Of Innovations In Science And Technology For Societal Development: Materials Science.

Automated summary

The paper presents the synthesis of polyanilines doped with different concentrations of oxalic acid using oxidative chemical polymerization. The impact of the dopant on the polymerization kinetics and the presence of oxalic acid in the polymer were investigated. Various characterization techniques were employed to study the morphology, thermal stability, crystallinity, electrochemical behavior, and capacitance of the polymer.