ABSTRACT
Waste biomass from agricultural and food production processes can be used to prepare activated carbons with high surface area for energy storage in electrochemical double-layer capacitors. The activation process and biomass carbon source can be selected to influence the pore structure and heteroatom content (for example, nitrogen and oxygen) of the activated carbon product. In this chapter, we review the eff ect of carbon pore structure and the eff ects of heteroatoms on the capacitance of carbon electrodes and compare the electrochemical performance of activated carbons prepared from three biomass wastes: coff ee waste, sawdust and sugarcane bagasse, popcorn and sucrose (as a refined carbon source).
