Biochar derived from biomass is illustrated schematically for use in energy storage applications. Biochar is first produced from a variety of biomass feedstocks, including fruit peel, eggshells, seeds, dedicated crops, and biomass waste precursors. Subsequently, various modification treatments are carried out to synthesise a Biochar-based material with a high surface area, high porosity, improved electrical conductivity, high energy content, and a large number of abundant functional groups. This Biochar-based material has the potential to be used in energy storage applications such as batteries and supercapacitors due to its low cost, efficiency, and active energy storage properties.