Design and manufacture of composite using pyrolysis saffron petals withpolyaniline as a high efficiency supercapacitor

Among energy storage methods, supercapacitors (SC) have received much attention due to their highspecific capacity, high power density, long cycle life, and environmental compatibility. Disposablebiological waste, including saffron petals, was used. However, the low conductivity of these materialsleads to poor electrochemical performance. To solve this challenge, we develo ped a process ofcalcination and preparation of activated carbon from saffron (ACS) followed by oxidationpolymerization of polyaniline (PANI), resulting in a final composite named ACS@PANI. Theelectrochemical properties of ACS@PANI composite were recorded by galvanostaticcharge/discharge (GCD) and electrochemical impedance spectroscopy (EIS) in aqueous electrolytesolution (KOH ۶.۰ M). The ACS @PANI composite electrode showed excellent electrochemicalperformance with a specific capacitance of ۷۰۳۸.۵۴ Fg-۱ and a scan rate of ۱۰ mV s-۱ in ۲۰۰۰ cycles.It also showed an energy density of ۷۸۶.۳۶ Wh Kg-۱ and a power density of ۲۸۰۲۵ W. kg-۱.Therefore, ACS@PANI was synthesized by this simple process and is an excellent component forpseudocapacitors with a redox mechanism

کلیدواژه ها:

polymer conductivity ، supercacitor ، activated carbon ، polyaniline