Electrochemical Performance of Potassium Bromate Active Electrolyte for Laser-Induced KBr-Graphene Supercapacitor Electrodes

In this paper, we have reported a low-concentration active electrolyte of KBrO3 for the supercapacitor’s application. The electrochemical processes were carried out in two concentrations with 0.2 and 0.4 M. Additionally, novel strategy doping graphene during its fabrication process potassium bromide (KBr) solution. chemical KBr improved properties used as supercapacitors. HRTEM images confirmed multi-layer obtained by CO2 laser based on polyimide. effect lattice has been studied using Raman spectroscopy. electrodes KBr-doped subjected to study supercapacitor impedance spectroscopy, cyclic voltammetry, galvanostatic charge-discharge techniques. results exhibited successful method stability suitable lower molarity. specific capacitance pristine capacitor M was 33 Fg−1, while value increased up 70 Fg−1 KBrO3. capacity mAhg−1 also twofold. possibility an electrolyte. performance almost showed good life cycle.