期刊
MENDELEEV COMMUNICATIONS
卷 31, 期 2, 页码 160-162出版社
ELSEVIER
DOI: 10.1016/j.mencom.2021.03.005
关键词
graphene; transition metal oxide; nickel oxide; NiO nanoparticles; NiO/graphene; supercapacitor electrode material; electrochemical capacitance
资金
- Russian Science Foundation [20-79-10063]
- Russian Science Foundation [20-79-10063] Funding Source: Russian Science Foundation
In this study, a NiO/graphene nanocomposite was synthesized via a one-step electrochemical method, showing promising electrochemical performance with a capacitance of 825 F g(-1), and retaining 89% of the initial value after 1000 operation cycles. The composite is composed of graphene sheets with 2-5 layers and NiO sheets with NiO nanoparticles of 3.6 nm diameter.
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 0.5-2 mm size as well as NiO sheets with 200-250 nm dimensions comprising NiO nanoparticles of similar to 3.6 nm diameter. The electrochemical capacitance of the nanocomposite is 825 F g(-1), with retaining 89% of the initial value after 1000 operation cycles.
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