Hybrid nitrogen-doped graphene-supported MoS2 nanosheets with synergistic effect for high-performance supercapacitor electrodes

Ravindran, Nithyialakshmi and Sookhakian, M. and Tong, Goh Boon and Yatimah, Alias (2025) Hybrid nitrogen-doped graphene-supported MoS2 nanosheets with synergistic effect for high-performance supercapacitor electrodes. Journal of Sol-Gel Science and Technology, 114 (3). pp. 983-996. ISSN 0928-0707. (Unpublished) (Unpublished)

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DOI/Official URL: https://doi.org/10.1007/s10971-025-06762-0

Abstract

Efficient supercapacitor electrodes have been developed from a nitrogen-doped graphene-molybdenum disulfide composite (NG/MoS2) with varying NG concentrations fabricated on nickel foil electrodes. The successful synthesis of NG and MoS2 nanosheets was confirmed through Raman spectroscopy, X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). At the same time, the morphology was studied using FESEM and TEM. The influence of varying NG concentrations on the electrochemical properties of the MoS2 nanosheets was investigated. The composite containing 1% NG achieved a maximum specific capacitance of 897.6 F/g at a current density of 1 A g−1 , surpassing the electrochemical performance of pristine MoS2, which had a capacitance of 291.1 F/g under the same conditions. This improvement arises from the synergistic interaction between superior catalytic properties found in the MoS2 nanosheets and conductivity provided by the addition of NG, which was confirmed through electrochemical impedance spectroscopy (EIS). In conclusion, this work may offer a way to fabricate supercapacitor electrodes with improved specific capacitance and energy density for energy storage.

Item Type:	Article
Additional Information:	Indexed by Scopus
Uncontrolled Keywords:	KOH; MoS2; Nitrogen doped graphene; Ratio design; Supercapacitor
Subjects:	H Social Sciences > HD Industries. Land use. Labor T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TP Chemical technology
Faculty/Division:	Faculty of Industrial Sciences And Technology
Depositing User:	Mrs. Nurul Hamira Abd Razak
Date Deposited:	19 Jun 2025 01:15
Last Modified:	19 Jun 2025 01:15
URI:	http://umpir.ump.edu.my/id/eprint/44867
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