Characterizations of synthesized laser-scribed graphene/ molybdenum disulfide (LSG/MoS2) hybrids for supercapacitor performance

Vasudevan, M. and Kanesan, A. and Remesh, S. and Perumal, V. and Raja, P.B. and Ibrahim, M.N.M. and Karuppanan, S. and Gopinath, S.C.B. and Ovinis, M. (2023) Characterizations of synthesized laser-scribed graphene/ molybdenum disulfide (LSG/MoS2) hybrids for supercapacitor performance. Journal of Water and Environmental Nanotechnology, 8 (2). pp. 137-150.

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Abstract

A sustainable and organic energy storage system from oil palm lignin waste-derived laser-scribed graphene embedded with molybdenum disulfide (LSG/MoS2 ) is reported in this work. LSG/MoS2 hybrids were fabricated to overcome the zero-band gap of graphene, and molybdenum disulfide restacking issues, and to induce electrical conductivity. Various amounts of LSG (0.1,0.5,1.0 g) were added in a MoS2 precursor to produce a nanoscale LSG/MoS2 hybrid nanostructure via the hydrothermal method. The Raman D, G, and 2D bands of LSG confirmed the formation of graphene from lignin. The FESEM morphology of LSG/MoS2 hybrids showed a porous and large surface area anchored with 3D MoS2 nanoflower on LSG. TEM imaging revealed MoS2 decorated LSG with a lattice spacing of 0.62 and 0.27nm, corresponding to the (002) and (100) planes of MoS2 . In terms of electrochemical performance, LSG with 0.1g of MoS2 has the lowest resistance, the highest specific capacitance of 6.7mF/cm2 at 0.05 mA/cm2, and excellent cyclic stability of 98.1 over 1000 cycles, based on Electrochemical Impedance Spectroscopy (EIS), Cyclic Voltammetry (CV) and Galvanostatic Charge Discharge (GCD) tests. © 2023, Iranian Environmental Mutagen Society. All rights reserved.

Item Type: Article
Additional Information: cited By 2
Depositing User: Mr Ahmad Suhairi UTP
Date Deposited: 04 Jun 2024 14:10
Last Modified: 04 Jun 2024 14:10
URI: https://khub.utp.edu.my/scholars/id/eprint/18501

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