Non-aqueous nanoporous gold based supercapacitors with high specific energy

In this study, we report that the supercapacitor performance of polypyrrole (PPy) in non-aqueous electrolytes can be dramatically improved by highly conductive nanoporous gold which acts as both the support of active PPy and the current collector of supercapacitors. The excellent electronic conductivity, rich porous structure and large surface area of the nanoporous electrodes give rise to a high specific capacitance and low internal resistance in non aqueous electrolytes. Combining with a wide working potential window of similar to 2 V, the non-aqueous PPy-based supercapacitors show an extraordinary energy density and power density. (C) 2016 Elsevier Ltd. All rights reserved.