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Facile synthesis of MnFe2O4/rGO nanocomposite for ultra-stable symmetric supercapacitor


In this paper, a binary MnFe2O4/reduced graphene oxide (MnFe2O4/rGO) nanocomposite is successfully synthsized via a facile aprroach. To possess larger layer spacing, the worm-like expanded graphite (EG) is used instead of graphite for synthsis of pristine graphene oxide (GO) suspension by modified Hummer's method. Furthermore, the obtained GO suspension concentrated by Mn2+ ions is utilized to synthesize the MnFe2O4/rGO by precipitation of Mn2+ ions and in-situ reduction of GO, simultaneously. The formation of the MnFe2O4/rGO nanocomposite and its individual constituents is confirmed through XRD, FT-IR, Raman, FE-SEM, TEM, BET, and TGA. Moreover, the magnetic properties of the samples are studied by vibrating sample magnetometer. A hybrid supercapacitor is fabricated using a two-electrode system with synthesized nanocomposite that demonstrates the specific capacitance of 271 F g-1 at the current density of 0.5 A g-1 in 6 M aqueous KOH electrolyte. It is worth noting that the cycling durability of symmetric supercapacitor is excellent, in which 104 % of primary capacitance preserved after about 5000 periods. Thus, the obtained extraordinary electrochemical proficiency of the binary composite is in order to the specific construction and the qualified electrical conductivity of the rGO nanosheets.

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Publication details

The article was received on 04 Jan 2017, accepted on 25 Apr 2017 and first published on 01 May 2017

Article type: Paper
DOI: 10.1039/C6NJ04093D
Citation: New J. Chem., 2017, Accepted Manuscript
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    Facile synthesis of MnFe2O4/rGO nanocomposite for ultra-stable symmetric supercapacitor

    A. Goljanian Tabrizi, N. Arsalani, A. Mohammadi, H. Namazi, L. Saleh Ghadimi and I. Ahadzadeh, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C6NJ04093D

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