Rough and Porous Micropebbles of CeCu[sub.2]Si[sub.2] for Energy Storage Applications

Supercapacitors have attracted considerable attention due to their advantages, including being lightweight and having rapid charge–discharge, a good rate capability, and high cyclic stability. Electrodes are one of the most important factors influencing the performance of supercapacitors. Herein, a...

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Veröffentlicht in:Materials 2023-11, Vol.16 (22)
Hauptverfasser: Scarpa, Davide, Cirillo, Claudia, Luciano, Christopher, Nigro, Angela, Adami, Renata, Cirillo, Carla, Attanasio, Carmine, Iuliano, Mariagrazia, Ponticorvo, Eleonora, Sarno, Maria
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Sprache:eng
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Zusammenfassung:Supercapacitors have attracted considerable attention due to their advantages, including being lightweight and having rapid charge–discharge, a good rate capability, and high cyclic stability. Electrodes are one of the most important factors influencing the performance of supercapacitors. Herein, a three-dimensional network of rough and porous micropebbles of CeCu[sub.2]Si[sub.2] has been prepared using a one-step procedure and tested for the first time as a supercapacitor electrode. The synthesized material was extensively characterized in a three-electrode configuration using different electrochemical techniques, such as cyclic voltammetry (CV), galvanostatic charge and discharge (GCD) tests, and electrochemical impedance spectroscopy (EIS). CeCu[sub.2]Si[sub.2] shows rather high mass-capacitance values: 278 F/g at 1 A/g and 295 F/g at 10 mV/s. Moreover, the material exhibits remarkable long-term stability: 98% of the initial capacitance was retained after 20,000 cycles at 10 A/g and the Coulombic efficiency remains equal to 100% at the end of the cycles.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma16227182