OICC Press Majlesi Journal of Electrical Engineering 2345-3796 19 2 (June 2025) 2025 06 01 Synthesis and characterization of reduced graphene usingvitamin C for conductive electrode applications 10.57647/j.mjee.2025.1902.30 EN Zeng Feihu Liming Vocational University, Quanzhou, China; Faculty of Engineering Technology, Universiti Tun Hussein Onn Malaysia, Pagoh, Johor, Malaysia https://orcid.org/0009-0002-7144-9908 SyYi Sim Faculty of Electrical and Electronic Engineering, Universiti Tun Hussein Onn Malaysia, Johor, Malaysia Wang Zhiwen Liming Vocational University, Quanzhou, China; Faculty of Engineering Technology, Universiti Tun Hussein Onn Malaysia, Pagoh, Johor, Malaysia Lai Mingrui Liming Vocational University, Quanzhou, China Journal Article 2025 06 01 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.