Fabrication of composite using activated carbon prepared from date kernelpowder with polyaniline and polypyrrole copolymer as supercapacitor

Supercapacitors (SCs) are an example of energy storage devices that have received much attentiondue to their high specific capacity, high power density, and compatibility with the environment.Calcination of disposable biological waste, including date kernels, and preparation of activatedcarbon (AC) is one of the common methods. However, the low conductivity of these materials leadsto poor electrochemical performance. To solve this challenge, we developed the oxidationcopolymerization of polyaniline (PANI) and polypyrrole (PPy), which resulted in a final compositecalled AC@PANI-co-PPy. The electrochemical properties of ACS@PANI composite were recordedby galvanostatic charge/discharge (GCD) and electrochemical impedance spectroscopy (EIS) inaqueous electrolyte solution (KOH ۳.۰ M). The AC@PANI-co-PPy composite electrode showed avery good electrochemical performance with a specific capacity of ۴۷۴۲.۰۸ Fg-۱ and a scan rate of۱۰ mV s-۱ in ۲۰۰۰ cycles. It also showed an energy density of ۶۵۳.۱۹ Wh Kg-۱ and a power densityof ۳۱۱۲۰.۹۳ W. kg-۱. Therefore, AC@PANI-co-PPy is an excellent component for quasi-capacitorswith a redox mechanism.

کلیدواژه ها:

polymer conductivity ، supercapacitor ، active carbon ، polyaniline