Journal
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
Volume -, Issue 22, Pages 3694-3699Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.201500410
Keywords
Nanostructures; Hydrothermal synthesis; Supercapacitors; Cyclic voltammetry
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Funding
- Deanship of Scientific Research at King Saud University [PRG-1436-19]
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We report the synthesis of electrode materials based on one-dimensional -NiMoO4 nanorods for application as a supercapacitor. The structure and morphology of the electrodes were characterized by powder X-ray diffraction, Raman analysis, X-ray photoelectron spectroscopy, and scanning and transmission electron microscopy. The maximum specific capacitance obtained from electrochemical measurements on a standard three-electrode system was 730 Fg(-1) at a scan rate of 5 mVs(-1). Furthermore, an asymmetric supercapacitor (ASC) was fabricated in which the NiMoO4 nanorods were used as the positive electrode and reduced graphene oxide was used as the negative electrode. The maximum specific energy obtained from the ASC study was 12.31 Whkg(-1) at a specific current of 0.5 Ag-1 in an aqueous KOH electrolyte. This ASC cell showed good stability with 85% capacitance retention up to 2000 cycles. These results reveal that our ASC shows a high performance and specific energy as well as good cycling stability.
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