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Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
Published on: January 7, 2022
Phosphorus-doped exfoliated graphene for supercapacitor electrodes
P Karthika1, N Rajalakshmi, K S Dhathathreyan
1Centre for Fuel Cell Technology, ARCI, Indian Institute of Technology Madras (IITM) Research Park, Phase 1, II Floor 6, Kanagam Road, Taramani, Chennai 600113, India.
Journal of Nanoscience and Nanotechnology
|June 13, 2013
Summary
Phosphorus-doped graphene offers a high-performance, low-cost solution for energy storage. This advanced material significantly enhances supercapacitor capabilities, demonstrating superior power and energy densities for efficient electrical energy storage applications.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Graphene's unique properties (high surface area, conductivity) make it suitable for electrochemical devices.
- Developing advanced materials is crucial for improving energy storage performance.
Purpose of the Study:
- To synthesize and characterize phosphorus-doped graphene.
- To evaluate its performance in supercapacitor applications.
Main Methods:
- Synthesis of phosphorus-doped graphene from reduced graphene sheets.
- Characterization using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and Raman spectroscopy.
- Electrochemical measurements for supercapacitor performance evaluation.
Main Results:
- Specific capacitance of 367 Fg(-1) was achieved.
- High power density (9 kW kg(-1)) and energy density (59 Wh kg(-1)) were recorded in aqueous electrolyte.
- Performance metrics exceed those of other graphene-based supercapacitors.
Conclusions:
- Phosphorus-doped graphene demonstrates significant potential for high-performance supercapacitors.
- This material offers a promising route for developing low-cost energy storage devices.
