With the rapid development of portable devices,green energy harvesting,and electric automobiles,safeenergy storage devices with improved power and energy densities are becoming increasingly important.Supercapacitors and Li-ion Batteries are very promising energy conversion and storage devices.Recently,the ternary cobalt nickel sulfides(NiCo2S4) have drawn great research interest because of their intriguingadvantages over the binary metal oxides(MOs) and sulfides(MSs).For instance,NiCo2S4 have an electricalconductivity of several orders of magnitude higher than that of either nickel oxides/sulfides or cobalt oxides/sulfides.