Sustainable synthesis of heteroatom doped porous carbon nanosheets for high-performance supercapacitor application

Abstract

With the increasing consumption of fossil fuels, the demand in developing inexpensive and renewable energy systems have become a prime factor worldwide. Supercapacitors have gained immense attention due to their porous electrode material derived from biomass waste. But still, it could not attain energy density of >10 Whkg-1. This thesis details the simple synthesis techniques to yield highly porous and doped carbon from biomass precursors (ginger root and Acorn nutshell) towards fabricating high-performance aqueous supercapacitor devices. It also demonstrates on how the Acorn nutshell derived carbon device with 17 Whkg-1 could power up diode indicators up to 3.5 V.