Characterizations of synthesized laser scribed graphene/molybdenum disulfide (LSG/MoS۲) hybrids for supercapacitor performance

The purpose of this research is to develop a sustainable and organic energy storage system from oil palm lignin waste-derived Laser Scribed Graphene embedded with molybdenum disulfide (LSG/MoS۲). In this study, LSG/MoS۲ hybrids were fabricated to overcome the graphene zero band gap, restacking issues of molybdenum disulfide and to induce the electrical conductivity. Therefore, various amounts of LSG (۰.۱,۰.۵,۱.۰ g) were added in MoS۲ precursor to produce nanoscale LSG/MoS۲ hybrid nanostructure via the hydrothermal method. To justify the findings of LSG/MoS۲ hybrid nanostructures, Raman spectroscopy, FESEM, TEM, and XRD were conducted. The D, G and ۲D bands found in LSG confirm the formation of graphene from lignin. The morphology of LSG/MoS۲ hybrids is porous and has a large surface area anchored with ۳D MoS۲ nanoflower on LSG. TEM has proved that LSG was wrapped with MoS۲, where the presence of lattice spacing of ۰.۶۲ and ۰.۲۷nm, which corresponded to the (۰۰۲) and (۱۰۰) planes of MoS۲ was observed. The electrochemical performance of the hybrids was conducted through Electrochemical Impedance Spectroscopy (EIS) demonstrated that increment in LSG in MoS۲ precursor effects the impedance and resistances performances.

کلیدواژه ها:

Oil palm lignin ، Molybdenum disulfide ، morphological ، structural ، Supercapacitor