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Updated: Dec 27, 2025

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Nitrogen-Enriched Reduced Graphene Oxide for High Performance Supercapacitor Electrode.

Lei Chen1, Xu Chen1, Yaqiong Wen1

  • 1College of Materials Science and Engineering, Changsha University of Science and Technology, Changsha 410114, China.

Journal of Nanoscience and Nanotechnology
|March 5, 2020
PubMed
Summary

Nitrogen-enriched reduced graphene oxide, a novel electrode material, offers high specific capacitance and excellent stability for supercapacitors. This material demonstrates promising potential for advanced energy storage applications.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • Graphene-based materials are extensively researched for energy storage due to their unique properties.
  • Developing cost-effective and high-performance electrode materials is crucial for advancing supercapacitor technology.

Purpose of the Study:

  • To synthesize nitrogen-enriched reduced graphene oxide (N-rGO) via a simple hydrothermal method.
  • To characterize the morphology, microstructure, and electrochemical performance of the N-rGO electrode.
  • To evaluate its potential as an electrode material for high-performance supercapacitors.

Main Methods:

  • Hydrothermal synthesis for N-rGO preparation.
  • Field Emission Scanning Electron Microscopy (FESEM), High-Resolution Transmission Electron Microscopy (HRTEM), and X-ray Diffraction (XRD) for material characterization.

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  • Cyclic Voltammetry (CV), Galvanostatic Charge/Discharge (GCD), and Electrochemical Impedance Spectroscopy (EIS) for electrochemical performance evaluation in 6 M KOH.

    • Main Results:

    • N-rGO exhibited a high specific surface area of 429.6 m²·g⁻¹.
    • Achieved a high specific capacitance of 223.5 F·g⁻¹ at 1 mV·s⁻¹.
    • Demonstrated outstanding stability with 100% coulombic efficiency and no capacitance loss after 10,000 cycles at 2 A·g⁻¹.

    Conclusions:

    • The simple hydrothermal method yields high-quality nitrogen-enriched reduced graphene oxide.
    • N-rGO electrode material shows excellent electrochemical performance, including high specific capacitance and remarkable stability.
    • Nitrogen-enriched reduced graphene oxide is a promising candidate for high-performance supercapacitor applications.