Simple and Green Synthesis of CQD@PANI for Use as an Electrode inSupercapacitors

An electrical energy storage device capable of holding charges is known as asupercapacitor. It is a prominent member of energy conversion systems and storagedevices due to its high power density, longer lifespan, rapid charge and dischargerates, excellent circulation capabilities, affordability, and safety.In this study,CQD@PANI nanocomposites were prepared through in situ chemical oxidativepolymerization using ammonium persulfate (APS) as an oxidizing agent. Thenanocomposites were then explored as an electrode material for supercapacitorapplications. The electrochemical activity of the nanocomposite was examined bygalvanostatic charge–discharge(GCD) and Electrochemical ImpedanceSpectroscopy(EIS). CQD@PANI composites exhibit outstanding electrochemicalproperties, including a huge specific capacitance ۴۹۲۸Fg-۱ ,energydensity۱۱۰۴Whkg-۱.,power density۳۹۶۸۷Wkg-۱.

کلیدواژه ها:

Conductive polymers ، Polyaniline(PANI) ، polypyrrole(PPy) ، supercapacitor ، carbonquantum dots (CQDs) ، lemon juice ، electrochemical properties.