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Updated: May 28, 2026
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Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
Published on: January 7, 2022
Polyacrylic Acid-Driven Design of Nd2O3 Nanostructures for Enhanced Supercapacitor Performance.
Rutuja U Amate1, Aviraj M Teli2, Sonali A Beknalkar2
1School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan 38541, Republic of Korea.
Polymers
|May 27, 2026
Summary
This study developed Nd2O3 electrodes using a PAA-assisted method, creating hierarchical structures for enhanced supercapacitor performance. The optimized electrodes show high capacitance and durability for advanced energy storage.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Rational electrode design is crucial for high-performance supercapacitors.
- Rare earth oxides show promise for energy storage applications.
Purpose of the Study:
- To develop Nd2O3 electrodes with controlled structural features for improved supercapacitor performance.
- To investigate the effect of polyacrylic acid (PAA) concentration on Nd2O3 morphology and electrochemical properties.
Main Methods:
- A polyacrylic acid (PAA)-assisted hydrothermal approach was used to synthesize Nd2O3 electrodes.
- PAA concentration was systematically tuned to control Nd2O3 growth and morphology.
- Electrochemical performance was evaluated using cyclic voltammetry, galvanostatic charge-discharge, and electrochemical impedance spectroscopy.
Main Results:
- A morphological transition from compact agglomerates to hierarchical structures was achieved by tuning PAA concentration.
- The optimized Nd2O3-P2 electrode exhibited a porous, interconnected architecture with enhanced electrolyte accessibility.
- High areal capacitance (26.889 F/cm2 at 10 mA/cm2), excellent rate capability, and reduced internal resistance were observed.
- The electrode demonstrated excellent cycling durability, retaining 87.08% capacitance over 12,000 cycles.
- An asymmetric supercapacitor achieved stable operation up to 1.5 V with 81.2% capacitance retention after 7000 cycles.
Conclusions:
- PAA-induced structural tuning is an effective strategy for developing advanced rare earth oxide-based electrodes.
- The optimized hierarchical Nd2O3 structure facilitates rapid ion transport and efficient redox activity for supercapacitors.
- This work provides a practical approach for designing high-performance electrodes for energy storage applications.
