Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 704, Issue -, Pages 734-741Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2017.02.099
Keywords
Na3Ni2SbO6; Solid state synthesis; Supercapacitor; Electrode material
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Funding
- Technology Innovation Program - Ministry of Trade, Industry and Energy [10041957]
- Study and Research at Dongguk University Scholarship Program (SRD) from Dongguk University
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In this study, Na3Ni2SbO6 was synthesized by simple solid state method and its electrochemical behaviour was examined as a supercapacitor electrode for the first time. Na3Cu2SbO6 was also synthesized by the same preparation method in order to compare with the Na3Ni2SbO6. The structure and morphology of the samples were characterized by XRD, XPS and SEM analysis. The results shows 03-type honeycomb layered Na3Ni2SbO6 with microcrystal morphology. Electrochemical properties were characterized by cyclic voltammetry, galvanostatic charge/discharge measurements, and electrochemical impedance spectroscopy. The results Showed that the specific capacitance of the Na3Ni2SbO6 and Na3Cu2SbO6 electrodes were 397 F/g and 50 F/g at the current density of 0.5 A/g respectively. The high pseudocapacitive nature of Na3Ni2SbO6 can be attributed to reversible redox reaction of Ni(II)/Ni(III). (C) 2017 Elsevier B.V. All rights reserved.
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