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Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
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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
PubMed
Summary
This summary is machine-generated.

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.

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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.