Charge storage kinetics of interconnected MnO₂ nano-needles/reduced graphene oxide composite for high energy density quasi-solid-state sodium ion asymmetric supercapacitor

Abstract

A facile synthesis route for preparing manganese dioxide (MnO 2 ) with unique nano-needle morphology and its nanocomposite with reduced graphene oxide (MnO 2 –rGO) for high energy density quasi-solid-state asymmetric supercapacitor.