Role of Carbon-Based Nanocomposites for Energy Storage

Certain allotropes of carbon have unique properties that have the potential for clean energy storage systems, healthcare, aerospace, and energy conversion applications. In this work, graphene-based nanocomposites (GNCs) were synthesized and investigated for their use in an ultracapacitor device. GNCs were selected for use as an electrode material for the supercapacitor due to their superior electrochemical properties and high surface area which is promising to provide superior energy storage performance. GNCs will be were synthesized using an electrochemical deposition technique and the performance will be was evaluated using various electrochemical studies in the presence of various three different aqueous electrolytes. Distinct Faradaic and non-Faradaic charge transfer mechanisms will be were investigated using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and galvanostatic charge-discharge (GCD) studies. Results of different percentages of dopants in the nanocomposite during synthesis and their effect on ultracapacitor performance will be presented. Lifecycle testing of the ultracapacitor device will be discussed and its post-test analysis were be presented. The role of different substrates, electrolytes, and their effect on the device performance will be discussed. Mechanisms of charge storage and transfer between the electrolyte and GNC surface will be presented.