Elevating electrochemical performance of Al2S3/rGO nanocomposite for supercapacitor devices

Abstract

Energy storage devices are the need of current era, and super-capacitor is one of well-known modern energy storage devices. Here, Al₂S₃/rGO nanocomposite electrode of SCs was synthesised by hydrothermal method and investigated physically and electrochemically. The successful manufacturing of this nanohybrid electrode was validated via various techniques. XRD confirmed about the structure, SEM show the excellent morphology while FTIR confirmed that all the essential functional groups are present in fabricated nanohybrid electrode. while BET spectra showed a high surface area. Al₂S₃/rGO nanohybrid material was analysed in basic media 3.0 M KOH via 3-electrode system to investigate electrochemical studies. The result tells that the fabricated Al₂S₃/rGO nanohybrid electrode has great storage potential. The GCD test tells that this nanohybrid has a Cs, 1210.39 F/g, and power density (P_d) of 284.35 W kg⁻¹ which is significantly better than pristine Al₂S₃ and rGO. Moreover, EIS test confirmed a very minute solution resistance and Chrono test tells that generated nanohybrid is stable for many hours. Hence, these result shows that Al₂S₃/rGO nanocomposite electrode is best hybrid electrode for SC and this nanohybrid can be use for many energy conversion and storage devices.