Figure 6: The charging/discharging processes of the assembled self-sustaining power pack.
From: Cotton-textile-enabled flexible self-sustaining power packs via roll-to-roll fabrication
(a) Schematic illustration of the roll-to-roll manufacturing process for integrating a flexible solar cell with the supercapacitor into a self-sustaining power pack. (b) Digital photograph of the assembled solar cell/supercapacitor hybrid energy conversion and storage system, insets are the photographs of the open circuit potential of the ACT/Co-Al LDH//ACT/graphene asymmetric cell before charging and after charging with solar cell. (c) Charging curve of the ACT/Co-Al LDH//ACT/graphene asymmetric cell with solar cell, and discharging curve of the ACT/Co-Al LDH//ACT/graphene asymmetric cell at a current density of 5 mA cm−2. (d) Digital photograph of the assembled solar cell/supercapacitor hybrid power pack worked under the light, inset shows schematically the working circuit connection. (e) Digital photograph of the assembled solar cell/supercapacitor hybrid power pack worked without the light, inset shows schematically the working circuit connection.
