Hydrothermal Synthesis of a Novel Spinel Nickel-Cobalt Sulfide/Polypyrrole Nanocomposite for High-Performance Supercapacitors

In this paper, Nickel-Cobalt Sulfide / Polypyrrole nanocomposite was succefully developed as a electrode for supercapacitors. NiCo2S4/PPy obtained by hydrothermal shows alow charge transfer resistance and high specific capacitance of 2554.88 F/g at a current density of 2.54 A/g and good cycle stability (81% capacitance retention after 2100 cycles at high scan rate 150 mV/s). The superior electrochemical performance can be attributed to the combined contribution of both component. The results demonstrate that the NiCo2S4/PPy nanocomposite is promising as electrode matrial for supercapacitors in energy storge.

Keywords:

NiCo2S4 , polypyrrole , nanocomposite , specific capacitance , supercapacitor