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Updated: Jun 19, 2026

Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators
Published on: April 25, 2020
Flexible solid-state supercapacitors based on biowaste-derived activated carbon and nanomaterials for enhanced
Dilara Koroglu1, Haluk Bingol2,3, Betul Uralcan1,4,5
1Department of Chemical Engineering, Bogazici University, Istanbul 34342, Turkey.
Researchers developed flexible solid-state supercapacitors using cabbage-derived activated carbon (AC), reduced graphene oxide (RGO), and carbon quantum dots (CQDs). This novel combination enhances capacitance, conductivity, and stability for wearable electronics.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Supercapacitors offer high power and long cycle life, suitable for wearable electronics.
- Flexible solid-state supercapacitors are desirable for consumer electronics applications.
Purpose of the Study:
- To fabricate flexible solid-state supercapacitors with enhanced capacitance and cycle life.
- To utilize low-cost, biowaste-derived materials for energy storage.
Main Methods:
- Synthesized activated carbon (AC) from cabbage leaves.
- Incorporated reduced graphene oxide (RGO) and carbon quantum dots (CQDs) into AC electrodes.
- Fabricated flexible solid-state supercapacitors using the optimized composite material.
Main Results:
- Achieved maximized capacitance at an optimal AC/RGO/CQD composition.
- Improved scan rate dependence and bending stability of the supercapacitors.
- Demonstrated a low-cost, biowaste-derived electrode material.
Conclusions:
- The developed flexible solid-state supercapacitors show significant potential for efficient energy storage in consumer electronics.
- The use of AC, RGO, and CQDs offers a promising route for advanced energy storage devices.
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