Polyaniline/activated carbon/copper ferrite (PANI/AC/CuF) based ternary composite as an efficient electrode material for supercapacitor

Abstract

The present study addressed the applicability of waste coconut shells to prepare activated carbon (AC) employing pyrolysis. The obtained AC was then used to prepare a ternary hybrid composite with polyaniline (PANI) and copper ferrite (CuF) through oxidative polymerization. The fabricated electrode exhibited a maximum two-electrode specific capacitance of 248.3 Fg−1, a maximum energy density of 49.66 Whkg−1 (1 Ag−1), and a maximum power density of 5996.6 Wkg−1 (20 Ag−1). Outstanding capacitance retention of 92.8% over 2500 cycles depicted excellent cycle stability. The synthesized supercapacitor electrode material may help develop new generation energy storage devices. © 2022