Challenges and Future Perspectives of Supercapacitor Materials: Mini Review

Abstract

Supercapacitors (SCs) formed an integral part of the contemporary energy storage systemsthanks to their unique traits of power delivery and charge storage capabilities coupled withlongcyclic stability (˃10⁵). In its basic form, a Supercapacitor (SC) consists of two separatedelectrodes impregnated with an electrolyte. The performance of SC is largely a functionof thechosen electrode-electrolyte materials. The choice of the materials depends on the prevailingconditions at hand and is always at a tradeoff between certain merits and de-merits. Herein, wereviewed the different types of SC materials (both electrodes and electrolytes) with emphasisonthe challenges associated with each. This will create an avenue in determining the directionandfuture perspective of SC materials.