Supercapacitor performance study of lithium chloride doped polyaniline

Lithium chloride doped polyaniline (PAni-LiCl) has been synthesized for using as an electroactive material for supercapacitor application. The morphological studies have been carried out by using SEM and HR-TEM techniques, while thermal studies have been made through thermogravimetric analysis (TGA). Characterization of the surface composition of the PAni-LiCl have been performed using X-ray photo-electron spectroscopy (XPS). Electrochemical characterization was done by using cyclic voltammetry, galvanostatic charge-discharge and impedance spectroscopy measurements. The synthesized PAni-LiCl is subjected to electroanalytical technique to study the supercapacitor behavior. PAni-LiCl used as the electroactive material, could provide maximum specific capacitance of 395 F g(-1) at a scan rate of 1 mV s(-1) in 1 M H2SO4 as electrolyte obtained from cyclic voltammetry technique and the specific capacitance of PAni-LiC1 measured by the galvanostatic charge-discharge curve at a current density of 1 A g(-1) shows 471 F g(-1) using the same electrolyte. PAni-LiClis observed to yield a higher energy density and power density of 65.42 W h kg(-1) and 178.57 W kg(-1) respectively. 100% Columbic efficiency has been attained after 1000 cycles. The specific capacitance of 167.28 F g(-1) could be obtained through impedance spectroscopy. (C) 2018 Elsevier B.V. All rights reserved.