Three-dimensional flower-like nanocomposites based on ZnO/NiO as effective electrode materials for supercapacitors

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Norah Salem Alsaiari
  • Irum Shaheen
  • Ijaz Ali
  • Umay Amara
  • Fatimah Mohammed Alzahrani
  • Sayed M. Eldin
  • Waqas Ul Arifeen
  • Tae Jo Ko

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number117158
Journal / PublicationJournal of Electroanalytical Chemistry
Volume930
Online published10 Jan 2023
Publication statusPublished - 1 Feb 2023

Abstract

The efficient hybrid materials with high specific capacity and long stability are highly desirable electrode materials for supercapacitors. Herein, composites based on ZnO/NiO as active electrode materials was fabricated using soft-templated hydrothermal method. The NiO and ZnO were successfully synthesize into 3D flower structures. The as-synthesized ZnO and NiO were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The electrochemical measurements of the fabricated ZnO/NiO electrodes were carried out by series of cyclic voltammetry (CV), galvanostatic charge–discharge (GCD) and electrochemical impedance spectroscopy (EIS). The highest specific capacity of 350 C g−1 was found at 2 A g−1 current while the lowest specific capacity of 217 C g−1 was measured at 20 A g−1. Finally, the 3D flower-shaped ZnO/NiO electrode revealed cyclic stability of 72.1 % capacitance retention and 97.1 % Coulombic efficiency at the end of 8000 GCD cycles. The current study revealed augmented supercapacitor properties with exceptional cyclic stability of ZnO/NiO composite-based electrodes. © 2023 Elsevier B.V.

Research Area(s)

  • Energy storage, Flower shaped, Metal oxides, Nanocomposite, Specific capacity

Citation Format(s)

Three-dimensional flower-like nanocomposites based on ZnO/NiO as effective electrode materials for supercapacitors. / Salem Alsaiari, Norah; Ahmad, Muhammad; Shaheen, Irum et al.
In: Journal of Electroanalytical Chemistry, Vol. 930, 117158, 01.02.2023.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review