Document Type : Reseach Article
Authors
1 Faculty of Electrical and Electronic Engineering, University Tun Hussein Onn Malaysia, Johor, Malaysia.
2 Liming Vocational University, Quanzhou, China.
3 Faculty of Engineering Technology, University Tun Hussein Onn Malaysia, Pagoh, Johor, Malaysia.
Abstract
In this study, reduced graphene oxide (rGO) was synthesized by reducing graphene oxide (GO) using Vitamin C (VC) as a reducing agent, to create a conductive electrode material. The structural and property effects of VC/GO mass ratios, reaction temperature and time on rGO were investigated in detail. Structural characterization and conductivity assessments of both GO and rGO were conducted using powder X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) surface area analysis, and a four-probe conductivity tester. The results showed that VC as a reducing agent effectively reduces the functional groups on the GO surface, forming C=C bonds, while also increasing the d-spacing of rGO. The increase of reaction temperature promotes the ionization and decomposition of VC, thereby improving the reaction efficiency. The synthesized rGO exhibited a porous network with an irregular structure formed by interconnected, wrinkled nanosheets. Optimal conditions were
observed when the VC/GO mass ratio was 1:1, the reaction temperature was 100 °C, and the reaction time was 3 hours. Under these conditions, the synthesized rGO material achieved a resistivity of 1.82 Ω·cm and a resistance value of 2.75 Ω, positioning it as an excellent electrode material.
Keywords
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