Metal Coated Fabric Based Asymmetric Supercapacitor for Wearable Applications

This paper presents a fabric based asymmetric supercapacitor (ASC) with metal coated cloths as the electrode and current collector. Graphite paste printed on silver textile (Berlin) is used negative nickel/copper/silver plated (Nora Dell) positive electrode. Biocompatible polyvinyl alcohol (PVA)-potassium chloride (KCl) gel electrolyte for ASC fabrication. During electrochemical process, oxides formed Nora Dell contributes to pseudocapacitance, whereas graphite forms electric double layer capacitance. Compared Berlin/graphite symmetric SC, fabricated shows enhanced performance an areal capacitance energy density of 32 mF.cm −2 $2.8~\mu $ Wh.cm respectively at scan rate 25 mV. notation="LaTeX">$\text{s}^{\mathbf {-1}}$ . The cyclic stability self-charging capability device flexible solar cells are also demonstrated proof concept use in practical applications. presented storage has potential be safe sustainable alternative needed meet rapid growth field wearable electronics.