Biomimicry of Cuscuta electrode design endows hybrid capacitor with ultrahigh energy density exceeding 2 mW h cm−2 at a power delivery of 25 mW cm−2

Abstract

Biomimicry of the Cuscutae design resulted in a supercapacitor with massive pseudocapacitive functionality implantation. The use of an ionic liquid electrolyte enables the symmetric device to deliver an unprecedented footprint-normalized capacitance exceeding 2.5 F cm⁻², a geometric energy density of 2.33 mW h cm⁻² and a geometric power density of 25.72 mW cm⁻².