Cobalt-iron spinel/reduced graphene oxide composite material for supercapacitor applications

Cobalt-iron spinel/reduced graphene oxide composite material was obtained by one-step hydrothermal synthesis. XRD, low temperature nitrogen adsorption, Mossbauer spectroscopy, micro-Raman spectroscopy and cyclic voltammetry were used for materials characterization. The influence of the annealing tem...

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Bibliographic Details
Published in:Molecular Crystals and Liquid Crystals 2021-03, Vol.717 (1), p.60-71
Main Authors: Hodlevska, M. A., Zapukhlyak, R. I., Boychuk, V. M., Kotsyubynsky, V. O., Kachmar, A. I., Fedorchenko, S. V.
Format: Article
Language:English
Subjects:
Aqueous electrolytes
Cobalt
Cobalt-iron spinel
composite material
Composite materials
cyclic voltammetry
Graphene
Iron
Low temperature
Mossbauer spectroscopy
pseudocapacitance
Raman spectroscopy
reduced graphene oxide
Spectroscopy
Spectrum analysis
Spinel
Supercapacitors
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Summary:Cobalt-iron spinel/reduced graphene oxide composite material was obtained by one-step hydrothermal synthesis. XRD, low temperature nitrogen adsorption, Mossbauer spectroscopy, micro-Raman spectroscopy and cyclic voltammetry were used for materials characterization. The influence of the annealing temperature and graphene component presence on the properties of composite materials was investigated. The contribution of pseudocapacitance component in total electric capacitance of the composite-based supercapacitors in 1 M KOH aqueous electrolyte was analyzed.
ISSN:1542-1406
1563-5287
1527-1943
DOI:10.1080/15421406.2020.1860529