FeCo2O4@PC as the electrode material for enhanced electrochemical performance of supercapacitors

One of the effective ways to improve the electrochemical performance of supercapacitors is to fabricate a combined electric double layer capacitor (EDLC)-pseudocapacitance system. In this study, we synthesized the composite material FeCo 2 O 4 @PC by hydrothermal method , which can enhance the electrochemical performance of supercapacitors by the synergetic effect of EDLC and pseudocapacitance mechanisms. A series of physical characterizations including X-ray diffractometer (XRD), X-ray photoelectron spectroscopy (XPS) and scanning electron microscope (SEM) were used to demonstrate the successful compositing of FeCo 2 O 4 @PC. And FeCo 2 O 4 @PC was used for the testing of supercapacitor and the electrochemical performance was evaluated by cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD). The results show that the composite FeCo 2 O 4 @PC-5 possesses larger specific capacitance and excellent rate capability. This further confirms that the composite of the two materials can overcome their respective shortcomings and improve the overall capacitive performance of the electrode. The composite electrode material FeCo 2 O 4 @PC has great application potential and prospects in the field of supercapacitors.