Supercapacitor electrodes delivering high energy and power densities

Considerable progress has been achieved in developing supercapacitor materials with desirable charge storage properties; however, uniting energy density (E-S) and power density (P-S) in a single device is an elusive issue. We have explored diverse range of materials and structures such as (i) activated carbon from bio-resources, (ii) ceramic electrochemical materials as nanoparticles, nanowires, and nanoribbons, and (iii) layered materials to overcome this issue. An ES of similar to 52.6 Wh kg(-1) @ P-S of similar to 15000 W kg(-1) is delivered using nanowire nanocomposites based device which appear to be the best ever achieved in supercapacitor charge storage mode employing aqueous alkaline electrolytes. (C) 2016 The Authors. Published by Elsevier Ltd.