Preparation of high-performance supercapacitor electrode with nanocomposite of CuO/NCNO flower-like

Abstract

Due to the importance of energy storage systems based on supercapacitors, various studies have been conducted. In this research CuO, NCNO and the flower like CuO/NCNO have been studied as a novel materials in this field. The resulte showed that the synthesized CuO nanostructutes have flower like morphology which studied by FE-SEM analisis. Further, the XRD pattern confirmed the crystalline properties of the CuO/NCNO nanocomposite, and the Raman verified the functional groups and vibrations of the components of CuO/NCNO nanocomposite. In a two-electrode system at a current density of 4 A/g, the capacitance, power density, and energy density were 450 F/g, 3200 W/kg, and 98 Wh/kg, respectively. The charge transfer resistances of CuO and NCNO/CuO electrodes obtained 8 and 2 Ω respectively, which show that the conductivity and supercapacitive properties of nanocomposite are better than pure components. Also, the stability and low charge transfer resistance are other advantages obtained in a two-symmetrical electrode investigation. The stability investigation showed that after 3000 consecutive cycles, only 4% of the initial capacitance of the CuO/NCNO electrode decreased.

Chemical synthesis and super capacitance performance of novel CuO@Cu4O3/rGO/PANI nanocomposite electrode

“…25 Therefore, the combination of CuO@Cu 4 O 3 /rGO can form an electron-conducting network with a short charge diffusion path that enhances the charge transfer process and improves the supercapitance performance. 26,27 Much previous literature has reported the supercapacitance performance of the CuO nanomaterial electrodes. For example, Shivaji et al reported a specic capacitance of 57.44 F g −1 for CuO lm in 1.0 M KOH electrolyte deposited by the electrodeposition protocol.…”

Fabrication of binary metal–organic frameworks of Ni–Mn@ZIFs(Cox·Zn1−xO) decorated on CF/CuO nanowire for high-performance electrochemical pseudocapacitors

“…Typically, CuO is converted to its metallic form during charging and then returned to its original state by discharge. These reversible redox reactions facilitate the effective storage and discharge of electrical energy, hence contributing to the elevated capacitance of supercapacitors 15 – 17 . The transition metal hydroxide or oxide materials, such as Co (OH) 2 , Ni (OH) 2 , Co 2 O 3 , and NiO, are commonly employed in merged with nanostructure to enhance the mechanical characteristics and surface area of the electrode 18 , 19 .…”