Controlled synthesis of nickel sulfide/graphene oxide nanocomposite for high-performance supercapacitor

Simple Synthesis and Supercapacitive Performances of NiMoS4 Particles

“…Obviously, the capacitances decrease with the increasing current densities, owing to that the electrolyte cannot fully contact the inner active materials at a high current density [7]. Moreover, the capacitances of NiMoS4 are higher than those for the component sulfides like MoS2 (122 F/g at 0.5 A/g [8]; 142 F/g at 0.59 A/g [9], 70 F/g at 1 A/g [10]) and NiS (250 F/g at 1 A/g [11]). In addition, they are also superior to those for the reported NiMoO4 (161 F/g at 5 A/g) [12].…”

Application of GO in Energy Conversion and Storage

“…The synergistic combination of WS 2 /RGO hybrids exhibit enhanced supercapacitor performance with specific capacitance of 350 F g −1 at a scan rate of 2 mV/s (about 5 and 2.5 times higher than bare WS 2 and RGO sheets) and energy density of ~49 Wh kg −1 , and simultaneously keeping stable over 1,000 cycles [216]. Even more impressively, the NiS/GO nanocomposite display a very high specific capacitance of 800 F g −1 at 1 A g −1 and long cycle life over 1,000 cycles [217]. On the other hand, the Sb/RGO composite also shows promising potential for supercapacitor electrode due to its high specific capacitance of 289 F g −1 (mainly contributed by the pseudocapacitance) and very good cyclability up to 1,000th [218].…”

“…Coupling the promising pseudocapacitive materials of metal sulfides with GO/RGO is another efficient strategy to improve the supercapacitor performance [216,217]. The synergistic combination of WS 2 /RGO hybrids exhibit enhanced supercapacitor performance with specific capacitance of 350 F g −1 at a scan rate of 2 mV/s (about 5 and 2.5 times higher than bare WS 2 and RGO sheets) and energy density of ~49 Wh kg −1 , and simultaneously keeping stable over 1,000 cycles [216].…”

Porous NiCo2S4 Networks as Electrodes for Electrochemical Supercapacitors

“…[12][13][14] Among the electrode materials studied thus far, transition metal sul¯des have shown great potentials. 15,16 This is attributed to the high electrical conductivity, extremely excellent electrochemical performance and thermal stability. [17][18][19][20] Therefore, the development of transition metal sul¯de electrode materials for pseudocapacitors has become a new research hotspot.…”