Electrochemical Performance of S-rGO Electrodes on Different Aqueous Electrolytes of Supercapacitor Applications

Improvement in the supercapacitive performance of heteroatom-doped graphene may only be obtained by heteroatom redox behavior. We investigated sulfur doped reduced graphene oxide (S-rGO) synthesis utilising microwave reactor assisted processes using sodium sulfide hydrate (Na₂S) as sulfur precursors. An experimental investigation was conducted to comprehend the electrochemical behaviour in various aqueous electrolytes for instance sulfuric acid (Na₂SO₄), potassium sulfate (K₂SO₄), and potassium hydroxide (KOH). Various methods were employed to evaluate the electrochemical performing of the S-rGO electrode, for example cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrical impedance spectroscopy
(EIS). S-rGO electrode in I M H₂SO₄ exhibit the superior specific capacitance (Csp) up 352 Fg¯¹ at 0.5 Ag¯¹. .