Porous materials of nitrogen doped graphene oxide@SnO₂ electrode for capable supercapacitor application

Area of Science:

• Materials Science
• Electrochemistry
• Nanotechnology

Background:

• Supercapacitors require advanced electrode materials for enhanced energy storage.
• Nanostructured metal oxides combined with carbon materials offer synergistic benefits.

Purpose of the Study:

• To synthesize and characterize porous SnO₂@NGO composites.
• To evaluate the electrochemical performance of SnO₂@NGO for supercapacitor applications.

Main Methods:

• Thermal reduction synthesis at 550°C using ammonia and urea.
• Characterization using Raman, XRD, XPS, HR-TEM, FE-TEM, and BET analysis.
• Electrochemical testing including cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy (EIS).

Main Results:

• Successful synthesis of SnO₂ nanoparticles anchored on NGO composite at the nanoscale.
• Achieved specific capacitance of ~378 F/g at 4 A/g.
• Demonstrated excellent cycle stability up to 5000 cycles.

Conclusions:

• The synthesized SnO₂@NGO composite exhibits promising electrochemical properties.
• This material is a strong candidate for high-performance supercapacitor applications.