PlumX Metrics
Embed PlumX Metrics

Cobalt-based metal oxide coated with ultrathin ALD-MoS 2 as an electrode material for supercapacitors

Chemical Engineering Journal, ISSN: 1385-8947, Vol: 435, Page: 135066
2022
  • 35
    Citations
  • 0
    Usage
  • 38
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    35
    • Citation Indexes
      35
  • Captures
    38

Article Description

A novel approach of preparing a composite supercapacitor electrode consisting of ternary metal oxide nanostructure decorated with transition metal sulfide is presented. High-surface area NiCo 2 O 4 nano-sheets grown on Ni-foam are coated with an ultrathin layer of MoS 2 by atomic layer deposition (ALD) and the hybrid structure reveals superior electrochemical performance. The composite is thoroughly studied with several characterizations like XRD, Raman, XPS, SEM and TEM. A comparative study with MoS 2 coated Co 3 O 4 electrodes not only ensures the advantage of the more conducting sulfide layer in enhancing the supercapacitor performance significantly but also establishes the superiority of the ternary oxide (NiCo 2 O 4 ) for this application. The thinner and well-connected nano-sheets of NiCo 2 O 4 provides the more interface between the electrode and the electrolyte whereas an optimal thickness of MoS 2 helps to maximize the performance of the device. The high areal capacitance (2445 mF cm −2 ), enhanced rate capability of the optimized NiCo 2 O 4 -MoS 2 composite is therefore ascribed to the synergistic effect of high-surface area of the oxide nano-sheets and better electronic conductivity of the sulfide. The current study thus opens a route to combine the conventional hydrothermal synthesis of ternary oxide nanostructures with ALD grown layered transition metal dichalcogenides to achieve a superior electrode for next-generation supercapacitor.

Bibliographic Details

Sachin A. Pawar; Dipali S. Patil; Dip K. Nandi; Muhammad Monirul Islam; Takeaki Sakurai; Soo-Hyun Kim; Jae Cheol Shin

Elsevier BV

Chemistry; Environmental Science; Chemical Engineering; Engineering

Provide Feedback

Have ideas for a new metric? Would you like to see something else here?Let us know