Mesoporous activated graphene oxide based electrochemical capacitor from Sri Lankan vein graphite
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Date
2023-12-09
Journal Title
Journal ISSN
Volume Title
Publisher
IEEE
Abstract
This study focuses on the development of a
mesoporous activated graphene oxide (AGO) based electrode
derived from Sri Lankan Vein Graphite, aiming to achieve an
ultra-high specific capacitance in electrochemical double-layer
capacitors (EDLCs). The AGO material is synthesized from Sri
Lankan graphite using a cost-effective and environmentally
friendly chemical synthesis route. The resulting AGO exhibits a
3-dimensional mesoporous structure with a specific surface area
exceeding 700 m2/g, as determined by Brunauer-Emmett-Teller
analysis. EDLC electrodes are prepared by mixing synthesized
AGO with a binder and conductive additive, and the electrode
performance was analyzed while maximizing AGO loading. An
enhanced specific capacitance of 529 F/g in 1M HCl electrolyte
is achieved, which is among the best-reported values for AGObased
electrodes so far. The observed high capacitance is
attributed to the high specific surface area, 3-dimensional
mesoporous structure with well-connected pores, and the
efficient ion and electron transport in the electrode.
Description
Citation
A. A. S. Amarathunga, M. K. A. Sadnaruwani and H. S. Sitinamaluwa, "Mesoporous Activated Graphene Oxide based Electrochemical Capacitor from Sri Lankan Vein Graphite," 2023 Moratuwa Engineering Research Conference (MERCon), Moratuwa, Sri Lanka, 2023, pp. 334-339, doi: 10.1109/MERCon60487.2023.10355472.