Comparison between constant current electrochemical and pulse current approach in reduction of graphene oxide on nickel-nickel oxide foam

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MIRZAEE M.; DEHGHANIAN CH.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: ADVANCED MATERIALS AND NOVEL COATINGS Year:2019 | Volume:7 | Issue:28 Page(s): 2002-2008

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Title

Comparison between constant current electrochemical and pulse current approach in reduction of graphene oxide on nickel-nickel oxide foam

Author(s)

MIRZAEE M. | DEHGHANIAN CH. | Issue Writer Certificate

Keywords

Electrochemically reduced graphene oxide

Constant current

Pulse current

Abstract

This study introduced a novel, nontoxic, scalable, two-step method for the fabrication of nickel-nickel oxide foam/Electrochemically reduced graphene oxide (ERGO) electrodes. This procedure included drop cast and graphene oxide (GO) reduction by Constant current and Pulse current methods. The result of structure was investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD) and Raman spectroscopy. Electrochemical impedance spectroscopy (EIS) measurements are carried out to study the electrochemical behavior of ERGO/Ni-NiO foam electrodes. SEM images revealed that the wrinkling degree of the synthesized graphene layers increased in Pulse current method. The Raman test results showed that the current density pulse method is more efficient in comparison with Constant current method. The XRD also showed that the interlayer spacing between the graphene sheets was higher in the Pulse current method. The ERGO/Ni-NiO foam fabricated by Pulse current method provided the least ESR value, and thus the highest rate charge/discharge process. The desirable electrochemical performance of ERGO/Ni-NiO foam electrode was mainly attributed to its irregular porous structure provided a large specific area, short ion diffusion distances and transport pathways for electrons. High-performance ERGO/Ni-NiO foam hybrid electrode materials made it as a reliable and accessible candidate for application in electrochemical energy storage.

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APA: Copy

MIRZAEE, M., & DEHGHANIAN, CH.. (2019). Comparison between constant current electrochemical and pulse current approach in reduction of graphene oxide on nickel-nickel oxide foam. ADVANCED MATERIALS AND NOVEL COATINGS, 7(28 ), 2002-2008. SID. https://sid.ir/paper/270212/en

Vancouver: Copy

MIRZAEE M., DEHGHANIAN CH.. Comparison between constant current electrochemical and pulse current approach in reduction of graphene oxide on nickel-nickel oxide foam. ADVANCED MATERIALS AND NOVEL COATINGS[Internet]. 2019;7(28 ):2002-2008. Available from: https://sid.ir/paper/270212/en

IEEE: Copy

M. MIRZAEE, and CH. DEHGHANIAN, “Comparison between constant current electrochemical and pulse current approach in reduction of graphene oxide on nickel-nickel oxide foam,” ADVANCED MATERIALS AND NOVEL COATINGS, vol. 7, no. 28 , pp. 2002–2008, 2019, [Online]. Available: https://sid.ir/paper/270212/en

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