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Updated: Nov 8, 2025

Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
Published on: January 7, 2022
Quaternary Cu2FeSnS4/PVP/rGO Composite for Supercapacitor Applications.
Melkiyur Isacfranklin1, Rathinam Yuvakkumar1, Ganesan Ravi1
1Department of Physics, Alagappa University, Karaikudi 630 003, Tamil Nadu, India.
Researchers developed a novel copper-iron-tin-sulfide/polyvinyl-pyrrolidone/reduced-graphene-oxide nanocomposite for advanced energy storage. This material shows great potential for high-performance asymmetric hybrid supercapacitors.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Electrochemical energy storage is crucial for modern energy challenges.
- Developing advanced materials is key to improving supercapacitor performance.
Purpose of the Study:
- To synthesize and characterize a novel Cu2FeSnS4/PVP/rGO nanocomposite.
- To investigate the electrochemical properties of this nanocomposite for supercapacitor applications.
- To design and test asymmetric hybrid supercapacitor devices.
Main Methods:
- A simple one-step solvothermal route was used for nanocomposite synthesis.
- Electrochemical performance was evaluated using cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD) tests.
- Asymmetric hybrid supercapacitor devices were fabricated using the nanocomposite electrode and activated carbon (AC).
Main Results:
- The Cu2FeSnS4/PVP/rGO electrode exhibited high capacitance (748 C/g at 5 mV/s) and energy density (73 Wh/kg).
- The asymmetric supercapacitor demonstrated excellent energy and power density (749 W/kg).
- A device successfully powered a commercial red LED for over a minute.
Conclusions:
- The Cu2FeSnS4/PVP/rGO nanocomposite is a promising electrode material for high-performance supercapacitors.
- This transition-metal chalcogenide composite offers a new avenue for advanced energy storage solutions.
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