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Updated: May 28, 2026
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Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
Published on: January 7, 2022
Controlling the structural, optical, electrical, and compositional properties of silica-graphite core-shell for
Nguyen Tam Nguyen Truong1, Nguyen Hoang Lam1, Jae-Hak Jung2
1School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, 4, Gyeongsan, 38541, Gyeongbuk, Republic of Korea.
Scientific Reports
|May 26, 2026
Summary
Researchers developed graphite-silica (SiO2@GP) core-shell particles for supercapacitors. The optimized 10-minute synthesis yielded a material with high specific capacitance, demonstrating potential for energy storage applications.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Core-shell structures offer unique properties for energy storage.
- Graphite and silica composites are promising electrode materials.
- Optimizing synthesis parameters is crucial for material performance.
Purpose of the Study:
- To synthesize and characterize graphite-silica (SiO2@GP) core-shell particles.
- To investigate the effect of synthesis growth time on particle properties.
- To evaluate the electrochemical performance of optimized SiO2@GP for supercapacitor applications.
Main Methods:
- Thermal chemical vapor deposition at 1100°C with varying growth times (1-60 min).
- Systematic analysis of SiO2@GP particle properties.
- Electrochemical performance evaluation using cyclic voltammetry, galvanostatic charge-discharge, and electrochemical impedance spectroscopy.
Main Results:
- SiO2@GP particles synthesized, with optimal structure at 10 min growth time.
- The SiO2@GP-10 composite exhibited a specific capacitance of ~291 F/g at 1 A/g.
- The material maintained over 40.14% capacitance at higher current densities.
Conclusions:
- Optimized SiO2@GP core-shell particles show excellent potential as supercapacitor electrodes.
- The synthesis method and growth time significantly influence electrochemical performance.
- The developed material demonstrates good capacitance retention for energy storage devices.
