D. V. Chernysheva, I. N. Leontyev, M. V. Avramenko, N. V. Lyanguzov, T. I. Grebenyuk, N. V. Smirnova, “One step simultaneous electrochemical synthesis of NiO/multilayer graphene nanocomposite as an electrode material for high performance supercapacitors”, Mendeleev Commun., 2021, Volume 31, Issue 2,Pages <nobr>160

This article is cited in 12 papers

Communications

One step simultaneous electrochemical synthesis of NiO/multilayer graphene nanocomposite as an electrode material for high performance supercapacitors

D. V. Chernysheva^a, I. N. Leontyev^b, M. V. Avramenko^b, N. V. Lyanguzov^bc, T. I. Grebenyuk^d, N. V. Smirnova^a

^a Platov South-Russian State Polytechnic University, Novocherkassk, Russian Federation
^b Southern Federal University, Rostov-on-Don, Russian Federation
^c Southern Scientific Center of the Russian Academy of Sciences, Rostov-on-Don, Russian Federation
^d Don State Technical University, Rostov-on-Don, Russian Federation

Abstract: A NiO/graphene nanocomposite has been prepared via one step electrochemical synthesis using simultaneous pulse alternating current dispersion of both Ni electrode and an electrode of thermally expanded graphite. Electron microscopy and Raman spectroscopy data reveals that the composite consists of graphene sheets with 2–5 layers having 0.5–2μm size as well as NiO sheets with 200–250nm dimensions comprising NiO nanoparticles of ∼3.6nm diameter. The electrochemical capacitance of the nanocomposite is 825Fg⁻¹, with retaining 89% of the initial value after 1000 operation cycles.

Keywords: graphene, transition metal oxide, nickel oxide, NiO nanoparticles, NiO/graphene, supercapacitor electrode material, electrochemical capacitance.

Language: English

DOI: 10.1016/j.mencom.2021.03.005