Preparation and Electrochemical Properties of NiCo2S4/CNTs Composites
The NiCo2S4 and NiCo2S4/CNTs composites were synthesized by a one-step hydrothermal method,NiCo2S4,NiCo2S4/CNTs composites were physically characterized by performing XPS,XRD,and SEM,while electrochemical tests were carried out using a three-electrode test system on an electrochemical workstation.The test results showed that the morphology of NiCo2S4 was changed by doping CNTs,the specific capacitance of NiCo2S4 could reach 830 F/g at 1 A/g current density,and the retention of specific capacitance was only 78.3%at 10 A/g current density,while the retention of specific capacitance of NiCo2S4/CNTs composite material reached 78.6%at 10 A/g,and 98.2%at 3 A/g current density for 1000 cycles.
万方数据
