ABSTRACT
Depleting natural resources have created the necessity of moving toward renewable resources. So, biomass wastes have proven to be a promising renewable carbon source by virtue of their wide availability and versatility and can be purchased even at the lowest possible cost. The most important here is the conversion of biowaste to activated carbon and its application in supercapacitors. The large pore volumes and extraordinary huge surface areas of biowaste-derived activated carbon (BWC) may improve the specific capacitance, power and energy densities, and their lifetime stability. The use of different biowaste can be strategically molded according to the need of an application. However, sometimes pristine BWC electrodes are not sufficient to get the desired energy density. Therefore, in this chapter, we have summarized different hybrid combinations of BWC and a variety of materials in a way to improve the energy and power density while maintaining long cycle life of supercapacitors. The high electrochemical performance of the hybrid BWC materials has described their potential application for industrial-level devices.
