| Preparation of polyaniline composite electrode by in-situ electropolymerization for application in supercapacitors |
| کد مقاله : 1120-17THECSI |
| نویسندگان |
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فرزانه عبداللهی *1، مونا فرهپور2، رضا انصاری3 1دانشجوی کارشناسی ارشد شیمی تجزیه، دانشکده علوم، دانشگاه گیلان، رشت، ایران 2Electroanalytical Chemistry Laboratory, Faculty of Chemistry, University of Guilan, Namjoo, Street, P.O. Box: 1914–41335, Rasht, Iran 3Electroanalytical Chemistry Laboratory, Faculty of Chemistry, University of Guilan, Namjoo, Street, P.O. Box: 1914–41335, Rasht, Iran Electroanalytical Chemistry |
| چکیده مقاله |
| In recent years, supercapacitors have attracted significant attention due to the fast charging/discharging rate, high power density, and long cycle life provide a viable solution to address the increasing demand. In the following study, the CoS2/polyaniline (PANI) electrode grown on nickel foam (NF) have been successfully constructed through a facile method and used as electrodes for a high-performance pseudo capacitor. Firstly, CoS2 salt was fabricated onto nickel foam (NF) by a hydrothermal method. Then, PANI was formed in situ on the surface of the CoS2 via an electropolymerization route to achieve high specific capacitance, and long-term life for required supercapacitor electrode applications. The electrochemical properties of these CoS2/PANI/NF electrodes were studied using cyclic voltammetry (CV), galvanostatic charge-discharge analysis (GCD), and electrochemical impedance spectroscopy (EIS) techniques. The highest specific capacitance obtained by the prepared electrode was 2443.33 F g –1 at a current density of 1 A g –1, and 93.04 % specific capacitance retention after 3000 charge/discharge cycles at a current density value of 8 A g –1. Moreover, a supercapacitor was fabricated using CoS2/PANI on NF as the positive electrode (cathode), and activated carbon on Ni foam (AC/NF) as the negative electrode (anode) exhibited high specific capacitance of 148.5 F g –1 at a current density of 1 A g –1. The introduced composite electrode based on PANI in this research showed excellent electrochemical performances to be used as electrode material in supercapacitors as novel energy storage devices. |
| کلیدواژه ها |
| Energy storage, Supercapacitor, Hydrothermal method, Polyaniline, cobalt disulfide |
| وضعیت: چکیده برای ارائه به صورت پوستر پذیرفته شده است |