This book discusses the overview and importance of the supercapacitor to the society as well as community. It expounds on the study's probable impact on education, science, technology, and ongoing research. It also gives the justification for the study in terms of contribution to theory and practice. This book may contribute to the novel scientific knowledge on 2D nanomaterial based electrodes for supercapacitor. The potential markets of this device include consumer electronics as well as hybrid electric vehicles. Lastly, it is hoped that this fundamental understanding of the intercalation of electrolyte ions to the 2D nanomaterial's surface would enhance the supercapacitor performances.