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

Mugashini Vasudevan, Aiswarya Kanesan, Sathaniswarman Remesh, Veeradasan Perumal*, Pandian Bothi Raja, Mohamad Nasir Mohamad Ibrahim, Saravanan Karuppanan, Subash C.B. Gopinath, Mark Ovinis

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    2 Citations (SciVal)


    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.
    Original languageEnglish
    Pages (from-to)137-150
    Number of pages14
    JournalJournal of Water and Environmental Nanotechnology
    Issue number2
    Publication statusPublished (VoR) - 17 May 2023


    This research is supported by the Ministry of Higher Education Malaysia Fundamental Research Grant Scheme (FRGS) (FRGS/1/2020/ TKO/UTP/03/7). The Nanotechnology Research Laboratory and Dye Solar Cell Laboratory, Universiti Teknologi PETRONAS (UTP), provided the testing facilities.

    FundersFunder number
    Ministry of Higher Education, MalaysiaFRGS/1/2020/ TKO/UTP/03/7


      • Oil palm lignin
      • molybdenum disulfide
      • morphological
      • structural
      • supercapacitor


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