One-Step Solvothermal Synthesis by Ethylene Glycol to Produce N-rGO for Supercapacitor Applications

Area of Science:

• Materials Science
• Electrochemistry
• Nanotechnology

Background:

• Graphene derivatives are excellent electrode materials for energy storage due to superior properties.
• Graphene-based composites face challenges in meeting current energy demands.

Purpose of the Study:

• To synthesize nitrogen-doped reduced graphene oxide (N-rGO) nanoparticles.
• To evaluate the performance of N-rGO as an electrode material for supercapacitors.

Main Methods:

• One-pot facile solvothermal synthesis using ethylene glycol (EG).
• Electrochemical analysis using a multi-channel electrochemical workstation.

Main Results:

• N-rGO electrode exhibited a specific capacitance of 420 F g⁻¹ at 1 A g⁻¹ in 3 M KOH.
• Achieved energy density of 28.60 Whkg⁻¹ and power density of 460 Wkg⁻¹.
• Demonstrated high capacitance retention of 98.5% after 3000 cycles at 10 A g⁻¹.

Conclusions:

• The facile solvothermal synthesis is an efficient method for creating N-rGO electrodes.
• N-rGO shows significant promise for next-generation supercapacitor applications.