We explore different combinations of electrolytes and electrodes to achieve state of the art performance of energy storage devices in terms of their power and energy densities, stability of performance, life cycle and cost. Our strategy is to carefully understand the mechanisms of charge intercalation and storage in some of the high performance electrode-electrolyte combinations; followed by devloping new electrode materials in terms of composition and design to explore these mechanisms to the optimum. Graphene, metal oxides including perovskites and hybrid materials are some of the primary candidates we are employing as electrodes in supercapacitors. High resolution transmission electron microscopy, X-ray fluoroscence, X-ray photoelectron spectroscopy and X-ray crystallography are some of the characeterization tools which are used exnensively to explore the science of charge intercalation in distinguised electrode-electrolyte combinations.