Study on Electrochemical Stability and Charge Transfer Efficiency for the Development of High-Performance Supercapacitors Using Iron Oxide (Fe2O3) Nanorods
Vijay Khawale, Mayank, Ravi Kumar, P. Satishkumar, Barun Haldar, B. Deepa, Rajasekaran Saminathan, P. Veeramanikandan, Azhagu Saravana Babu Packirisamy, S. Mayakannan
Abstract
A novel electrode material for electrochemical supercapacitors is introduced in this study: hydrothermally produced permeable iron oxide (Fe2O3) nanorods (NRs).The Fe2O3 nanorods exhibit exceptional crystallinity and phase purity, and X-ray diffraction (XRD) studies validated their cubic crystalline structure inside an Ia3 space collective.An examination of the morphology of the Fe2O3 NRs uncovered their nanostructured characteristics, such as a rod-shaped structure with an average dimension of about 30 nm.A record specific capacitance of 489 F/g was attained by conducting electrochemical performance studies using Fe2O3 NRs electrodes for supercapacitors at 10 mVs-1scan rate.The effective series resistance (ESR) was determined using electrochemical impedance spectroscopy (EIS).It measured 3.26 , indicating a low resistance and efficient charge transport kinetics.Fe2O3 NRs electrodes exhibited exceptional chemical stability, maintaining excellent capacitance even after 500 charge-discharge cycles at a current density of 6 Ag-1.This study presents a scalable method for creating high-performance supercapacitors using Fe2O3 NRs to improve the development and design of upcoming energy storage devices.