Large-scale synthesis of reduced-graphene oxide and its applications in supercapacitors

Le Minh Tri; Nguyen Huu Van

doi:10.62239/jca.2024.060

Authors

Le Minh Tri Academy of Military Science and Technology, Nghia Do, Cau Giay, Ha Noi, VIET NAM Author
Nguyen Huu Van Institute of Chemistry and Materials Science, Nghia Do, Cau Giay, Ha Noi, VIET NAM Author

DOI:

https://doi.org/10.62239/jca.2024.060

Keywords:

Reduced Graphene oxide, electrochemical exfoliation, supercapacitors, EDLCs

Abstract

Graphene-based electrode materials exhibit a high specific capacitance and long charge-discharge cycling life, but the material cost remains high because of the complexity of the graphene manufacturing process. This study employed an electrochemical exfoliation method to prepare graphene in a simple and ecologically friendly procedure. According to research findings, the disordered multi-layer structure of graphene exhibited great purity, porosity, and graphitization. The graphene electrode material showed high electrochemical properties in a two-electrode supercapacitor system, with a specific capacitance of 168.2 F g^-1 at a current density of 0.1 A g^-1 and a specific capacitance retention of 94.5 % after 1000 cycles. Research shows enormous potential of electrochemical approaches for producing large-scale graphene materials for energy storage application.

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