Kerista Tarigan, Rikson Siburian, Isa Anshori, Nuni Widiarti, Yatimah Binti Alias, Boon Tong Goh, Jingfeng Huang, Fathan Bahfie, Yosia Gopas Oetama Manik, Ronn Goei, Alfred Iing Yoong Tok
This study introduces a sustainable method of producing a graphene nano sheet (GNS) from coconut shells and investigates its application in GNS, Ni/GNS, and Zn/GNS electrodes for advanced energy storage devices. The GNS was synthesized in a scalable manner using a pyrolysis and impregnation technique, with its successful synthesis verified by X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX), Raman spectroscopy, and electrical conductivity measurement characterizations. The study highlights the enhanced performance of Zn/GNS electrodes, which outperform both pure GNS and Ni/GNS variants. This superior performance is attributed to the smaller particle size of Zn (mean = 2.356 µm) compared to Ni (mean = 3.09 µm) and Zn’s more favourable electron configuration for electron transfer. These findings demonstrate the potential of bio-derived GNS composites as efficient, high-performance electrodes, paving the way for more sustainable and cost-effective energy storage solutions. © 2024 by the authors.
Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Medan, 20155, Indonesia; Carbon and Frankincense Research Center, Universitas Sumatera Utara, Medan, 20155, Indonesia; Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Medan, 20155, Indonesia; Lab on Chip Laboratory, Department of Biomedical Engineering, Bandung Institute of Technology, Bandung, 40116, Indonesia; Research Center for Nanoscience and Nanotechnology (RCNN), Bandung Institute of Technology, Bandung, 40132, Indonesia; Chemistry Department, Faculty of Mathematics and Natural Sciences, Universitas Negeri Semarang, Semarang, 50229, Indonesia; Department of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur, 50603, Malaysia; Centre for Ionic Liquids (UMCiL), University of Malaya, Kuala Lumpur, 50603, Malaysia; Low Dimensional Materials Research Centre, Department of Physics, Faculty of Science, University of Malaya, Kuala Lumpur, 50603, Malaysia; School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore; Research Center of Mining Technology—National Research and Innovation Agency of Indonesia, Jl. Sutami Km 15, Tanjung Bintang, South Lampung, Lampung, 35361, Indonesia
