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
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.
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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