Figure 7.
A schematic of a transparent type supercapacitor prepared by inkjet printing graphene ink. (a) Printing of graphene ink on a substrate; (b) Screen printing of silver ink as a current collector; (c) Plasma etching; (d) Removal of a mask; (e) Dripping the gel electrolyte; (f) Photographs of printed supercapacitors. Reproduced from [58], with permission from Royal Society of Chemistry, 2017.