Design Development and Evaluation of Performance Parameters of Supercapacitors

Abstract

Supercapacitors (SCs) are new Energy Storage Devices (ESDs) that exhibit unique newlinefeatures such as high capacitance, high power density, and a long cycle life. Owing to these properties, they have attracted a great deal of attention in the field of energy storage applications such as Electric Vehicles (EVs) and Power supplies for portable newlinedevices. Other widely ESDs such as Li-ion and Lead-acid batteries possess high energy densities but take long hours to charge due to its low power densities and this results in degradation of the battery. SCs recharge in short interval of time as they exhibit high power densities. The crucial constituents of a supercapacitor are the electrodes and electrolyte materials used in supercapacitors. Specifically, the properties of the electrode materials have a substantial influence on device performance, and consequently, there is significant opportunity for engineering materials to improve the energy density, power density, cycle lifetime, cost, and the performance of supercapacitors. Furthermore, these properties could be intelligently tailored for specific applications. Among many electrode materials used, high surface area activated carbon remains the electrode material of choice since the supercapacitor using activated carbon has symmetric charge/discharge power capability and long cycle life. Hence, the current research has been focused in such a way to recognize a diversity of biomass precursors in order to develop cost effective and eco-friendly carbon materials that may be suitable for use as electrodes in supercapacitors. The primary objective of this work is to develop a high-performance electrode materials and its nanocomposite with various metal oxides for SCs. The current research work describes the synthesis of various Biomass-derived porous or nanostructured activated carbon. Biomass precursors carefully chosen for synthesis were Orange peel, Sugarcane Bagasse, and Bamboo. Orange Peel derived Activated Carbon (OPAC), Sugarcane Bagasse derived Activated Carbon newline