Fabrication of MnO2 Nanocomposite on GO Functionalized with Advanced Electrode Material for Supercapacitors

R Ranjith Kumar,Alagar Karthick,Razan A Alshgari,M Muhibbullah,Chandrabhanu Malla,P Jayaraman,A K Priya,S Thanigaivel,Abdulnasser Mahmoud Karami,Awais Ahmed

doi:10.1155/2022/7929270

Abstract

A new strategy for supercapacitor formation was carried out in the study using electrodes made of graphene oxide (GO) and manganese dioxide (MnO2) nanocomposites. To the present knowledge, only a few investigations have been carried out concerning the synthesis of GO-MnO2-based nanocomposites and their electrochemical properties, with varying mass ratios, as well as the change in electrochemical properties of their components as MnO2 and GO were tested individually for the enhanced stability and performances. A synthetic method was performed successfully to manufacture MnO2/GO nanocomposites. The findings of the present study show that the composites have a lot of potential as an effective conduction property. A composite of graphene oxide supported manganese dioxide nanocomposites fabricated with the simple soft chemical route. As-prepared nanocomposites can be improved in performance by the interactions between GO and MnO2.

Highlights

In the last few decades, the importance of nanomaterials was enormously increased due to their unique features and mechanical properties
All experiments were conducted utilizing a three-anode framework comprising of a functioning electrode made of exposed or modified glassy carbon (GCE, 3 mm in width), a reference electrode made of saturated calomel (SCE), and an assistant electrode made of platinum wire
Pristine MnO2 and MnO2-graphene oxide (GO) composites were successfully coated on stainless steel (SS) by the electrodeposition method

Summary

Introduction

In the last few decades, the importance of nanomaterials was enormously increased due to their unique features and mechanical properties. MnO2 has been used for lithium batteries, sensors, catalysts, and alkaline Zn/MnO2 cell applications; under ambient settings, MnO2 is perhaps considered as the most steady manganese oxides, with remarkably strong physical and excellent compound properties These mixtures’ high polymorphism and underlying adaptability have given them a wide scope of uses, including catalysis, biosensors, and energy stockpiling. Deposition of Fe does not change the amorphous nature of MnO2 but changes its surface morphology that results in increased porosity, increasing the pseudocapacitive performance of MnO2 [1, 14, 15] Both active and inert electrodes may be used in high surface area, conductive materials for capacitive supercapacitors that utilize infinitesimal charge partition, or quick, reversible redox responses in the active materials for pseudocapacitance [16, 17]. MnO2 and MnO2-GO composite can be synthesized by a simple and economical electrodeposition method

Materials and Methodology

Result and Discussion

Conclusion