Fabrication and electrochemical investigation of MnCo2O4/PANI nanohybrid for supercapacitor

초록

Energy storage and environmental pollution are currently two major problems facing the world. Supercapacitors are an innovative, sustainable energy storage technology with several practical and environmental benefits, like an extended lifespan, a greater power density and a low environmental impact. This research employed a hydrothermal method to fabricate a MnCo2O4/PANI (MCO/PANI) nanohybrid as a supercapacitor electrode material. The electrode material's interface properties, patterns and morphology were analyzed using various analytical techniques. X-ray diffraction (XRD), scanning electron microscopy (SEM) and Brunner emitting teller (BET) analytical techniques used to assess, morphology, area and phase purity of manufactured electrode material. Electrochemical techniques like cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), electrochemical impedance spectroscopy (EIS), chronoamperometry (CA) and electrochemical surface area (ECSA) used to evaluate electrochemical quality of a manufactured electrode. MCO/PANI nanohybrid demonstrated a specific capacitance (C-s) of 1661.11 F/g at 1 A/g with specific power (S-P) of 265 W/kg and specific energy (S-E) of 64.80 Wh/kg. Additionally, the solution resistance value (R-s) of 0.88 Omega indicates that MCO/PANI nanohybrid material exhibits a low internal resistance. The composite material electrode exhibited exceptional stability in 3.0 M KOH over 3000(th) cycles. Supercapacitor technology has entered a new era with improved stability, performance parameters and results demonstrate significant potential for application in future energy storage devices.

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