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Updated: Jan 26, 2026
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Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
Published on: January 7, 2022
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Systematic Comparison of Graphene Materials for Supercapacitor Electrodes
Lewis W Le Fevre1,2,3, Jianyun Cao3,4, Ian A Kinloch3,4
1School of Electronic and Electrical Engineering University of Manchester Sackville Street, Manchester M13 9PL UK.
Chemistryopen
|April 16, 2019
Summary
The production method significantly impacts graphene supercapacitor performance. Graphene oxide offers high capacitance but poor retention, while anodic electrochemically exfoliated graphene provides better retention for power applications.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Supercapacitor performance varies greatly with graphene production methods.
- A systematic study on this effect is lacking.
- Graphene's unique properties make it ideal for energy storage.
Purpose of the Study:
- To systematically compare supercapacitor performance based on different graphene production methods.
- To identify the optimal graphene type for specific supercapacitor applications.
Main Methods:
- Graphene synthesized via anodic/cathodic electrochemical exfoliation, liquid-phase exfoliation, graphene oxide, reduced graphene oxide, and graphene nanoribbons.
- Supercapacitor performance testing in 6M KOH electrolyte.
- Capacitance, capacitance retention, and cyclability measurements after 10,000 cycles.
Main Results:
- Graphene oxide showed the highest capacitance (~154 F/g) due to pseudocapacitance but had poor retention.
- Anodic electrochemically exfoliated graphene demonstrated the highest capacitance retention among 'pure' graphene materials (~44 F/g).
- All materials, except reduced graphene oxide, exceeded 95% cyclability after 10,000 cycles.
Conclusions:
- Graphene production method critically influences supercapacitor performance.
- Graphene oxide is suitable for high energy applications.
- Anodic electrochemically exfoliated graphene is optimal for high power applications.
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