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Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
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Plasma-assisted three-dimensional lightscribe graphene as high-performance supercapacitors.
Naser Namdar1, Foad Ghasemi2, Zeinab Sanaee3
1Nano-Fabricated Energy Devices Laboratory, School of Electrical and Computer Engineering, College of Engineering, University of Tehran, Tehran, Iran.
Scientific Reports
|March 12, 2022
Summary
Researchers developed a novel method for creating high-performance graphene supercapacitors. This process enhances energy storage capacity and stability using reduced graphene oxide (rGO) and sequential plasma and laser treatments.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Graphene-based supercapacitors offer excellent energy storage due to their unique properties.
- Developing efficient and scalable fabrication methods for these devices is crucial for practical applications.
Purpose of the Study:
- To introduce a simple, fast, and high-performance method for fabricating reduced graphene oxide (rGO)-based supercapacitors.
- To enhance the effective surface area and electrical conductivity of rGO electrodes.
Main Methods:
- Graphene oxide (GO) synthesized via modified Hummers' method.
- GO reduced to rGO patterns using a LightScribe DVD drive.
- Sequential oxygen/sulfur hexafluoride plasma treatment and laser irradiation applied to rGO.
Main Results:
- Fabricated rGO-based supercapacitors achieved a capacitance of approximately 10.2 F/cm³.
- The supercapacitors demonstrated high stability over 1000 charge-discharge cycles.
- Characterization using SEM, TEM, Raman, BET, and XPS confirmed electrode properties.
Conclusions:
- The sequential plasma and laser treatment effectively enhances rGO electrode performance for supercapacitors.
- The developed fabrication method is promising for practical energy storage applications.
- The resulting rGO-based supercapacitors exhibit significant potential for energy storage devices.
