CO2‐activated Carbon

Abstract

Activated carbon-based supercapacitor research is currently in the spotlight due to its promising future with outstanding properties such as pore structures, high surface area, low cost, cyclic stability, and higher capacitance. As a result, numerous studies are being conducted to produce activated carbon from various sources of biomass. Furthermore, a prime research focus is the physical activation of carbon using carbon dioxide (CO 2 ) and the direct utilization of CO 2 to prepare activated carbon. On the other hand, activated carbon has a high potential as a supercapacitor electrode material due to its high electrical conductivity and capacitance. So, this chapter aims to provide a critical analysis on the fabrication of CO 2 -activated carbon-based electrodes from various biomass, as well as an evaluation of their performance as electrode materials in supercapacitors. Additionally, future research ideas regarding the precise activation of carbon to boost supercapacitor performance, and electrode materials that can be derived from different biomass precursors.