Graphene footprints in energy storage systems—An overview

Abstract

With the nanomaterial advancements, graphene based electrodes have been developed and used for energy storage applications. Important energy storage devices like supercapacitors and batteries have employed the electrodes based on pristine graphene or graphene derived nanocomposites. This review mainly portrays the application of efficient graphene and derived nanocomposites in substantial energy storage devices (supercapacitors and Li ion batteries). The structural and physical features of graphene-based nanocomposites such as high surface area, robustness, heat stability, electron conduction, specific capacitance, charge or energy density, charge-discharge performance, capacity, cyclic stability, performance life, etc. have been found beneficial for these devices. Despite the superior nanocomposite features and ensuing high devices performance, numerous challenges need to be overcome to attain future desirable energy storage device performance.

Keywords

• Graphene
• Nanocomposite
• Capacitance
• Charge-discharge, supercapacitor
• Li ion batteries