Electrochemical performance of graphene/molybdenum disulfide electrodes based supercapacitor

Tunku Adaham, Tunku Aidil Ilham (2017) Electrochemical performance of graphene/molybdenum disulfide electrodes based supercapacitor. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

The aim of the study for this final year project is to access the electrochemical performance of graphene/molybdenum disulfide composite based electrode in supercapacitors. The use of N-methylpyrrolidone as solvent during the liquid phase exfoliation is suitable for both graphene and Mo . This is supported with the data collected from Raman spectroscopy and XRD shows that the bulk powders are exfoliated to few layers of flakes. The experiment turned out to be that the composite of 75G-25MoS2 exhibited a fair performing electrode which the specific capacitance is 24.71 F/g under 1 mA/mg of current density for 10,000 cycles. It also gives a fair value in specific capacitance at lowest scan rate at 1 mVs-1 which is 38.64 F/g in a neutral pH electrolyte of 0.5M of sodium sulfate (Na2SO4). The capacitance retention of the composite electrode also turned out to be better than pure graphene by 24% after 10,000 cycles.

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