Electrochemical studies of EDLC Cells fabricated using drum stick (DS) activated charcoal

Abstract

In this article, biomass drum stick (DS) activated carbon has been synthesized and used as an electrode material for fabrication of electrical double layer capacitor (EDLC). Polymer gel electrolyte [PVdF-HFP (20 wt%) + EC-PC (1:1v/v)-TEABF4 (1.0M)} (80 wt%)], optimized for highest conductivity, is used as an electrolyte for this EDLC cell. The performance of EDLC cell with drum stick (DS) activated carbon is tested using various techniques such as impedance spectroscopy, cyclic voltammetry and charge discharge techniques. The performance of drum stick (DS) activated carbon based EDLC cell is compared with EDLC cell fabricated using market purchased activated charcoal. DS activated carbon electrode based EDLC cell shows better results compared to the market purchased activated charcoal electrode based EDLC cell. The specific capacitance of DS electrode based EDLC cell is found to be ∼178.7 mFcm-2 and ∼ 84.7 Fg-1 in a single electrode system.