CoNi2S4 Microspheres Prepared by One-pot Hydrothermal Reaction as Supercapacitor

摘要

A microsphere discrete structure of CoNi2S4 was prepared through one-pot hydrothermal reaction and characterized by FTIR,XRD and SEM.The as-prepared CoNi2S4 served as a supercapacitor,showing a specific capacitance of 1129.5 F/g with over 99％ coulombic efficiency at a current density of 4 A/g in 3 M KOH.And after 3000 cycles of charge and discharge tests,92.3％ of its initial capacitance can be still maintained.The results demonstrate that the material is promising as an electrode material for supercapacitors in energy storage.