超级电容器
纳米复合材料
循环伏安法
聚吡咯
介电谱
热液循环
电容
储能
阳极
材料科学
水热合成
化学工程
阴极
化学
电化学
纳米技术
电极
功率(物理)
物理
物理化学
量子力学
工程类
作者
Marziyeh Hasanzadeh,Reza Ansari,Mona Farahpour
标识
DOI:10.1016/j.jallcom.2023.169965
摘要
This study investigates the effectiveness of CoS2/PPy nanocomposites as electrode materials for supercapacitors. We performed a simple and effective one-step hydrothermal fabrication of these nanostructures on nickel foam as substrate. After accurate characterization, electrochemical studies were performed using various techniques, such as cyclic voltammetry (CV), galvanostatic discharge (GCD), and electrochemical impedance spectroscopy (EIS). The result shows excellent electrochemical behaviour of the synthesized electrode with a specific capacitance of 605.2 C g−1 at a current density of 1 A g−1. Moreover, considerable capacitance retention (∼90.9% after 5000 cycles) was obtained. Next, an asymmetric supercapacitor was developed using a prepared electrode and activated carbon (AC /Ni foam) as cathode and anode, respectively. The device showed a high specific energy of 88.07 Wh kg−1 with a significant power of 4.95 kW kg−1 at an operating voltage of These unexpected results indicate that the CoS2/PPy nanostructure has the potential to become a promising electrode for energy storage systems.
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