超级电容器
电容
循环伏安法
介电谱
材料科学
电化学
电极
法拉第效率
电阻抗
多孔性
储能
分析化学(期刊)
化学工程
复合材料
化学
热力学
电气工程
物理
物理化学
色谱法
功率(物理)
工程类
作者
Davide Scarpa,Claudia Cirillo,Christopher Luciano,A. Nigro,Renata Adami,C. Cirillo,C. Attanasio,Mariagrazia Iuliano,Eleonora Ponticorvo,María Sarno
出处
期刊:Materials
[Multidisciplinary Digital Publishing Institute]
日期:2023-11-16
卷期号:16 (22): 7182-7182
被引量:2
摘要
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 CeCu2Si2 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). CeCu2Si2 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.
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