Capacitive behavior of functionalized activated carbon-based all-solid-state supercapacitor

Abstract In this report, we incorporate activated carbon (AC) onto aluminum substrate via doctor blade method to produce an all-solid-state supercapacitor. The electrochemical properties of the supercapacitor were characterized by cyclic voltammetry and impedance spectroscopy. Galvanostatic charge/discharge tests also carried out exhibit stability AC-based curves showed good capacitive behavior after functionalized AC. highest specific capacitance obtained for was 106 F g −1 . About 160% increased functionalization AC, which indicated that modification AC nitric acid able introduce functional groups on improve its performances.