Impact of Preprocessing of Graphene Additive via Ultrasonication on the Electrochemical Performance of Activated Carbon-Based Supercapacitors
Chameh B, Shaker M, Shahalizade T, Sadeghi Ghazvini A, Saznaghi MH, Farhadi S, Shahroudi H, Raissi B, Aghaei A, Yaghmaee MS, Riahifar R (2023)
Publication Type: Journal article
Publication year: 2023
Journal
Abstract
This article investigates the influence of the addition method of graphene to activated carbon (AC) on the electrochemical performance of the fabricated electric double-layer capacitors (EDLCs). To do so, the same graphene material is introduced to the other electrode slurry materials either in the form of a powder (GP) or a suspension (GL). It is discovered that the introduction of graphene already dispersed by ultrasonic in a suspension to AC has a better effect on the electrochemical performance of the fabricated EDLCs than directly employing its powder. GL EDLC achieves the highest capacitance of 54 F g−1 at a current density of 0.05 A g−1 in an organic electrolyte, which is much better than the GP EDLC (41.9 F g−1) and about 77% more than AC EDLC. Moreover, after cycling at various current densities (2000 cycles), GL EDLC maintains 28.8 F g−1 of its capacitance with 99.4% coulombic efficiency at a current density of 1 A g−1. Finally, GL EDLC exhibits 35.8 and 21.4 Wh kg−1 energy densities at 50.2 and 1102.8 W kg−1 power densities, respectively. The better performance of GL EDLC in comparison with GP EDLC is ascribed to better graphene dispersion.
Additional Organisation(s)
Involved external institutions
University of Eastern Finland
Finland (FI)
Chongqing 2D Materials Institute
China (CN)
University of Tehran
Iran, Islamic Republic of (IR)
Tarbiat Modares University
Iran, Islamic Republic of (IR)
Institute of Materials and Energy (MERC)
Iran, Islamic Republic of (IR)
Finland (FI)
Chongqing 2D Materials Institute
China (CN)
University of Tehran
Iran, Islamic Republic of (IR)
Tarbiat Modares University
Iran, Islamic Republic of (IR)
Institute of Materials and Energy (MERC)
Iran, Islamic Republic of (IR)
How to cite
APA:
Chameh, B., Shaker, M., Shahalizade, T., Sadeghi Ghazvini, A., Saznaghi, M.H., Farhadi, S.,... Riahifar, R. (2023). Impact of Preprocessing of Graphene Additive via Ultrasonication on the Electrochemical Performance of Activated Carbon-Based Supercapacitors. Energy Technology. https://dx.doi.org/10.1002/ente.202300573
MLA:
Chameh, Behnam, et al. "Impact of Preprocessing of Graphene Additive via Ultrasonication on the Electrochemical Performance of Activated Carbon-Based Supercapacitors." Energy Technology (2023).
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