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Rough and Porous Micropebbles of CeCu2Si2 for Energy Storage Applications.
Davide Scarpa1,2, Claudia Cirillo1,2, Christopher Luciano1,2
1Department of Physics "E.R. Caianiello", University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy.
Materials (Basel, Switzerland)
|November 25, 2023
Summary
A novel CeCu2Si2 material, structured as porous micropebbles, demonstrates excellent performance as a supercapacitor electrode. This advanced material offers high capacitance and remarkable long-term stability for energy storage applications.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Supercapacitors offer advantages like light weight, rapid charge-discharge, and high cyclic stability.
- Electrode material is critical for supercapacitor performance.
Purpose of the Study:
- To synthesize and evaluate a novel CeCu2Si2 material for supercapacitor electrodes.
- To investigate the electrochemical properties and stability of the CeCu2Si2 material.
Main Methods:
- One-step synthesis of a 3D network of rough and porous CeCu2Si2 micropebbles.
- Electrochemical characterization using cyclic voltammetry (CV), galvanostatic charge and discharge (GCD), and electrochemical impedance spectroscopy (EIS) in a three-electrode setup.
Main Results:
- CeCu2Si2 exhibited high mass-capacitance values of 278 F/g at 1 A/g and 295 F/g at 10 mV/s.
- The material demonstrated excellent long-term stability, retaining 98% of initial capacitance after 20,000 cycles at 10 A/g.
- 100% Coulombic efficiency was maintained throughout the cycling tests.
Conclusions:
- The synthesized CeCu2Si2 micropebbles are a promising electrode material for high-performance supercapacitors.
- The material's unique structure contributes to its superior electrochemical properties and stability.
