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Issue 27, 2018
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NiMoO4@NiWO4 honeycombs as a high performance electrode material for supercapacitor applications

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Abstract

In this study, we report a facile two-step fabrication of honeycomb-like NiMoO4@NiWO4 nanocomposites on Ni foam as the electrode for high-performance supercapacitor applications. Structural characterization and compositional analysis of the as-prepared NiMoO4@NiWO4 nanocomposites was performed using scanning electron microscopy, energy-dispersive X-ray spectroscopy, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, cyclic voltammetry, galvanostatic charge–discharge cycling, and electrochemical impedance spectroscopy. The electrochemical properties of the as-synthesized NiMoO4@NiWO4 nanocomposites were studied in a 3 M KOH electrolyte solution for application as electrode material of supercapacitors. A maximum specific capacitance of 1290 F g−1 was achieved for NiMoO4@NiWO4 at a current density of 2 A g−1. This electrode exhibits excellent long cycle-life stability with 93.1% specific capacitance retention after 3000 cycles at a current density of 6 A g−1. Our studies indicate that the as-synthesized NiMoO4@NiWO4 nanocomposites could be a promising candidate as the electrode material in high-performance electrochemical energy storage applications.

Graphical abstract: NiMoO4@NiWO4 honeycombs as a high performance electrode material for supercapacitor applications

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Publication details

The article was received on 30 Mar 2018, accepted on 10 Jun 2018 and first published on 11 Jun 2018


Article type: Paper
DOI: 10.1039/C8DT01245H
Citation: Dalton Trans., 2018,47, 9057-9063
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    NiMoO4@NiWO4 honeycombs as a high performance electrode material for supercapacitor applications

    A. E. Reddy, T. Anitha, C. V. V. Muralee Gopi, S. Srinivasa Rao and H. Kim, Dalton Trans., 2018, 47, 9057
    DOI: 10.1039/C8DT01245H

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