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Synthesis of Exfoliated Graphene as Anode Material using a Modified Electrochemical Process
Oktaviardi B. Abdillah (a), Tirta R. Mayangsari (b), Octia Floweri (c), Lia Destiarti (d), Akfiny H. Aimon (a,e), Ferry Iskandar (a,c,e)*

(a) Department of Physics, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung (ITB), Jl. Ganesha 10 Bandung, 40132, Indonesia
(b) Department of Chemistry, Universitas Pertamina, Jalan Teuku Nyak Arief, Simprug, Jakarta, 12220
(c) Research Center for Nanosciences and Nanotechnology, Institut Teknologi Bandung (ITB), Jl. Ganesha 10 Bandung, 40132, Indonesia
(d) Department of Chemistry, Faculty of Mathematics and Natural Sciences,Universitas Tanjungpura, Pontianak
Indonesia
(e) National Center for Sustainable Transportation Technology (NCSTT), Institut Teknologi Bandung (ITB), Jl. Ganesha 10 Bandung, 40132, Indonesia
*ferry[at]fi.itb.ac.id


Abstract

Due to its excellent properties, such as superior electrical conductivity and large surface area, graphene has been extensively studied for its application as anode material for lithium battery application. Graphene fabrication via the electrochemical exfoliation route is promising due to the low-cost and straightforward process. Herein, we added a pre-treatment of graphite sheet raw material using the immersion process in H2SO4/H2O2 mixture to pre-intercalate graphite before the exfoliation process. Pre-treatment time in the constant H2SO4/H2O2 volume ratio was optimized to obtain the best electrical conductivity and charge transfer resistance. On the prepared samples, the optimum period is 3 minutes, which generates the electrical conductivity of 3298 S m-1. The smallest charge transfer resistance yielded is 55.90 Ohm. Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray (EDX) Spectroscopy were utilized for characterizing the morphology and elemental composition of samples.

Keywords: charge transfer resistance, electrical conductivity, electrochemical exfoliation, graphene, pre-treatment

Topic: Battery Technology and Management System

Link: https://ifory.id/abstract/bfEQAVH2hcjK

Conference: The 6th International Conference on Electric Vehicular Technology (ICEVT 2019)

Plain Format | Corresponding Author (Oktaviardi Bityasmawan Abdillah)

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