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Enhanced Performance of a Supercapacitor by Addition of Turbostratic Fractal Graphene to an Activated Carbon Electrode
  • Maithri Dissanayake 1,   
  • Charlie Karunaratne 1,   
  • A. V. R. S. Koswaththa 2,   
  • S. G. S. M. Nawarathna 2,   
  • M. I. U. Weerasinghe 3,   
  • G. R. A. Kumara 3,   
  • Ranjith Divigalpitiya 4, *

Received: 19 Nov 2024 | Revised: 24 Dec 2024 | Accepted: 08 Feb 2025 | Published: 24 Mar 2025

Abstract

This research explores the enhancement of supercapacitor performance through the incorporation of a new form of turbostratic graphene (Fractal Graphene, FGA-1) into activated carbon (AC) electrodes. By combining FGA-1 with AC, the electrodes exhibit improved electrical conductivity and enhanced electrolyte diffusion, leading to superior charge storage capability. Material characterization confirms that the FGA-1–AC composite forms a synergistic structure, facilitating better interaction with the electrolyte. The composite electrodes demonstrate significant improvements in specific capacitance compared to AC-only counterparts. Enhanced wettability and optimized diffusion rates were identified as key factors contributing to these improvements. The findings highlight the potential of FGA-1 as an additive for improving the efficiency of carbon-based supercapacitors, providing a foundation for high-performance energy storage solutions suitable for a broad range of applications.

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Dissanayake, M.; Karunaratne, C.; Koswaththa, A. V. R. S.; Nawarathna, S. G. S. M.; Weerasinghe, M. I. U.; Kumara, G. R. A.; Divigalpitiya, R. Enhanced Performance of a Supercapacitor by Addition of Turbostratic Fractal Graphene to an Activated Carbon Electrode. Graphene Innovation and Technology 2025, 1 (1), 2.
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