Tingkai Zhao
Northwestern Polytechnical University, China
Title: Preparation and performance of carbon dot stabilized copper sulphide/carbon nanotubes hybrid composite as supercapacitor electrode materials
Biography
Biography: Tingkai Zhao
Abstract
Carbon dot stabilized copper sulphide/carbon nanotube (CD@CuS/CNT) hybrid composite was synthesized by a simple one-pot hydrothermal reaction at 180℃ using copper sulphate and sodium thiosulphate as Cu and S sources. The microstructures and morphologies of hybrid composites were characterized by X-ray diffraction (XRD), Raman spectroscopy (Raman), scanning electron microscope (SEM) and transmission electron microscope (TEM). Moreover, a high-performance asymmetric supercapacitor device was assembled to improve the electrochemical performance of CuS as well as carbon based supercapacitors1. The CD@CuS/CNT hybrid composite exhibited a maximum specific capacitance of 736.1F•g-1 at the current density of 1A•g-1. Furthermore, the CD@CuS/CNT hybrid composite showed good cycling stability with more than 92% capacitance retention after 5000 cycles. These excellent results suggested that CD@CuS/CNT hybrid composite has promising application potential for supercapacitors2.