Electrochemical analysis of CuO-AC based nanocomposite for supercapacitor electrode application

• Main Authors: Singh Yadav, Mahendra, Singh, Narendra, Bobade, Santosh M.
• Format: Conference Proceeding
• Language: English
• Subjects: Nanocomposite; Nanoparticles; SEM; Supercapacitor; SXRD
• ISSN: 2214-7853; 2214-7853
• DOI: 10.1016/j.matpr.2020.02.712

In the present work, the activated charcoal-dispersed with Copper Oxide (CuO) nanoparticles (NPs) electrode materials has been proposed as electrode materials for supercapacitor that is used as energy storage device. The CuO NPs have been synthesized using co-precipitation method and the nanocomposite has been with activated charcoal (AC) powder for its application in an electrochemical supercapacitor. CuO nanoparticles calcination has been carried out at three different temperatures (400, 500, and 600 °C). The optimized temperature for synthesis is 600 °C that resulted into better performance of electrode materials. The Synchrotron X-ray diffraction (SXRD) confirms the monoclinic structure with space group C2/c (15). Electrochemical properties of the prepared nanocomposite electrodes and fabricated supercapacitor cells have been characterized using a.c. impedance, cyclic voltammetry (CV) and charge discharge (CD) techniques by using 6 M KOH as an the electrolyte. The optimized composition is 1:1 (mass ratio) of CuO and activated charcoal. The specific capacitance of the supercapacitor cell is stable up to 2000 cycles at 100 mV cm−2, which show that the device has good electrochemical reversibility and cycle life with 6 M KOH electrolyte.