Integration of CuO nanosheets to Zn-Ni-Co oxide nanowire arrays for energy storage applications

Iftikhar Hussain, Tanveer Hussain, Shaoran Yang, Yatu Chen, Jun Zhou, Xiaoxia Ma, Nadir Abbas, Charmaine Lamiel, Kaili Zhang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

97 Citations (Scopus)

Abstract

The structure of materials in supercapacitors plays great importance in facilitating fast ion transport. Herein, we incorporated two-dimensional Cu-oxide nanosheets (2D NSs) in one-dimensional Zn-Ni-Co-oxide nanowire arrays (1D NWAs) on three-dimensional (3D) substrate. The integrated CuO/Zn-Ni-Co oxide electrode material exhibited a high specific capacity of 1261C g−1 at a current density of 1 A g−1 and retained 92.2% of its capacity after 20,000 cycles. Density functional theory-based calculations were employed to validate the structural and electronic properties of the prepared materials. Moreover, the hybrid supercapacitor (HSC) device was engineered by using the as-prepared CuO/Zn-Ni-Co oxide electrode material as a positive and integrated functionalized multi wall carbon nanotubes (MWCNTs-COOH), activated carbon (AC), and reduced graphene oxide (rGO) as negative electrode. We highlighted the variance in using two different equations for energy density calculations. The HSC device delivered a high energy density of 74 Wh kg−1 at a power density of 1.02 kW kg−1. We also demonstrated illumination of multiple color LEDs for >600 s. The eye-catching results demonstrated that the integrated and structured 2D NSs/1D NWAs based CuO/Zn-Ni-Co oxide from materials can be used for practical applications.

Original languageEnglish
Article number127570
JournalChemical Engineering Journal
Volume413
DOIs
Publication statusPublished - 1 Jun 2021
Externally publishedYes

Keywords

  • Energy density
  • Metal substitution
  • Mixed metal oxide
  • Nanosheet
  • Nanowire array

Fingerprint

Dive into the research topics of 'Integration of CuO nanosheets to Zn-Ni-Co oxide nanowire arrays for energy storage applications'. Together they form a unique fingerprint.

Cite this