Figure 5
From: Green preparation of reduced graphene oxide for sensing and energy storage applications

Supercapacitor application of CA-rGO.
(a) Schematic diagram of the rGO-based double-layer supercapacitor. (b) Digital photographs of an LED light powered by a supercapacitor cell. Inset: digital photograph of a bare Ni foam before and after being coated with 24h-CA-rGO sheets. CV curves of the supercapacitors using GO and 24h-CA-rGO working electrodes in (c) 1.0 M KCl and (d) 1.0 M TEABF4/AN electrolytes tested at a scan rate of 100 mV/s.