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Updated: Jun 17, 2026
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Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
Published on: January 7, 2022
Rare-earth orthoferrites (RFeO3, R = La, Y) as next-generation electrode materials for high-performance
Arshad Iqbal1, Abdul Hakeem Anwer2, Abdelbaki Benamor2,3
1Department of Physics, Integral University, Lucknow, 226026, India. tahira@iul.ac.in.
Dalton Transactions (Cambridge, England : 2003)
|June 16, 2026
Summary
Lanthanum orthoferrite (LaFeO3) shows excellent performance as a supercapacitor electrode, offering high capacitance and stability. This nanocrystalline material, synthesized via sol-gel auto-combustion, is promising for advanced energy storage devices.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Supercapacitors are crucial for energy storage.
- Developing high-performance electrode materials is essential.
- Lanthanum and Yttrium orthoferrites (RFeO3) are potential candidates.
Purpose of the Study:
- Synthesize and electrochemically evaluate nanocrystalline LaFeO3 and YFeO3.
- Assess their potential as supercapacitor electrode materials.
- Investigate the factors contributing to LaFeO3's superior performance.
Main Methods:
- Sol-gel auto-combustion synthesis.
- X-ray diffraction (XRD) and transmission electron microscopy (TEM) for characterization.
- Electrochemical assessment as supercapacitor electrodes.
Main Results:
- Both LaFeO3 and YFeO3 formed single-phase orthorhombic perovskite structures at the nanoscale.
- LaFeO3 exhibited a specific capacitance of 815.6 F g⁻¹ at 1.0 A g⁻¹, nearly double that of YFeO3.
- LaFeO3 maintained 88-90% capacitance after 10,000 cycles, showing excellent stability.
Conclusions:
- LaFeO3 demonstrates superior electrochemical performance compared to YFeO3 for supercapacitors.
- Optimized electronic structure, morphology, and surface area of LaFeO3 enhance ion diffusion and redox reactions.
- Cost-effective synthesis makes LaFeO3 a promising material for high-performance supercapacitors.
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