Performances of Co2+-Substituted NiMoO4 Nanorods in a Solid-State Hybrid Supercapacitor

Sengodan Prabhu, Moorthy Maruthapandi, Arulappan Durairaj, Srinivasan Arun Kumar, John H.T. Luong, Rajendran Ramesh, Aharon Gedanken

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

A hydrothermal method was conducted to synthesize Ni(1−α)Co(α)MoO4 (α = 0, 0.1, 0.3, and 0.5 M) nanorods, which were proven as excellent electrode materials in a hybrid supercapacitor. Their electrochemical properties were also dependent on the Ni/Co ratio as demonstrated by different electrochemical techniques. Ni0.5Co0.5MoO4 (α = 0.5 M) offered specific capacity (Qg) = 354 Cg-1@1 Ag-1, a remarkable specific capacity with a notable retention capacity of 92% after 8000 repeated cycles at 10 Ag-1. Ni0.5Co0.5MoO4 with a high surface area outperformed the mono-metallic (NiMoO4) and bimetallic (Ni0.9Co0.1MoO4 and Ni0.7Co0.3MoO4) nanostructures. The hybrid supercapacitor (Ni0.5Co0.5MoO4//activated carbon) delivered a maximum Qcell of 53 Cg-1 at 1 Ag-1 with an energy density of 16.2

Original languageEnglish
Pages (from-to)1321-1331
Number of pages11
JournalACS Applied Energy Materials
Volume6
Issue number3
DOIs
StatePublished - 13 Feb 2023

Bibliographical note

Publisher Copyright:
© 2023 American Chemical Society.

Keywords

  • cyclic stability
  • electrical conductivity
  • hybrid supercapacitor
  • transition metal molybdate

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