4TH International Congress on Technology - Engineering & SCIENCE - Kuala Lumpur - Malaysia (2017-08-05)

Mwcnts/r-go Hybrid Films Fabricated By Layer By Layer Assembly For Supercapacitor Electrodes
This paper describes the fabrication and characterization of a hybrid nanostructure comprised of multiwall carbon nanotube (MWCNTs) on reduced graphene oxide (r-GO) via layer by layer (LBL) assembly. This structure was prepared by vacuum filtration and heat-treated at low temperatures of 500°C. The morphology of sample was determined by field emission electron spectroscopy (FE-SEM). The structural detail and the chemical analysis were characterized by using X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS), respectively. The cyclic voltammetry (CV) curve of MWCNTs/r-GO hybrid film appeared nearly rectangular in shape. The current density was gradually increased by increasing the scan rate of the voltage, exceeding a high scan rate of 500 mVs-1. The maximum specific capacitance obtained was around of 538 F/g in 6 M KOH. These hybrid films can be improved for supercapacitor electrodes.
Suttinart Noothongkaew, Orathai Thumthan