Scarpa Davide, Cirillo Claudia, Luciano Christopher, Nigro Angela, Adami Renata, Cirillo Carla, Attanasio Carmine, Iuliano Mariagrazia, Ponticorvo Eleonora, Sarno Maria
Department of Physics "E.R. Caianiello", University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy.
NANO_MATES Research Centre, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy.
Materials (Basel). 2023 Nov 16;16(22):7182. doi: 10.3390/ma16227182.
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 CeCuSi 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). CeCuSi 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.
超级电容器因其具有重量轻、充放电速度快、倍率性能好和循环稳定性高等优点而备受关注。电极是影响超级电容器性能的最重要因素之一。在此，采用一步法制备了具有粗糙多孔微球的CeCuSi三维网络，并首次作为超级电容器电极进行了测试。使用循环伏安法（CV）、恒电流充放电（GCD）测试和电化学阻抗谱（EIS）等不同电化学技术，在三电极配置下对合成材料进行了广泛表征。CeCuSi显示出相当高的质量电容值：在1 A/g时为278 F/g，在10 mV/s时为295 F/g。此外，该材料表现出显著的长期稳定性：在10 A/g下循环20000次后，仍保留了初始电容的98%，且循环结束时库仑效率仍保持100%。
