Synthesis of P-doped NiS as an electrode material for supercapacitors with enhanced rate capability and cycling stability

Abstract

Nickel sulfide (NiS) has sparked considerable interests as a promising electrode material for supercapacitors. However, the poor electrical conductivity and unstable structure during the continuous charge-discharge process limited their practical...

Iron-doped nickel sulfide nanospheres anchored on reduced graphene oxide for high performance supercapacitors

“…The phosphorus doped NiS prepared by the solvothermal method exhibits a better specific capacity of 727.79 C g À1 at 1 A g À1 with outstanding rate capability due to the improved electrical conductivity compared to pristine NiS. 17 Cobalt doped NiS on carbon dots delivers a specific capacity of 1240 C g À1 at 1 A g À1 with excellent rate capability, while the capacity remains 80% after 1000 cycles. 34 The poor cycling performance may be due to the agglomeration of nickel sulfide during the charge-discharge processes.…”

“…Research on metal sulfides as electrode materials for hybrid supercapacitors has attracted considerable research interest due to their high theoretical capacities, large natural reserves and low cost. [12][13][14] Numerous studies have been reported on the electrochemical properties of nickel sulfides such as NiS, [15][16][17][18][19][20] NiS 2 , [21][22][23][24][25] Ni 3 S 2 , [26][27][28][29][30] and Ni 3 S 4 [31][32][33] as supercapacitor electrode materials.…”

Passion fruit-like microspheres of FeS2 wrapped with carbon as an excellent fast charging material for supercapacitors

“…As energy storage devices, supercapacitors have gained more attention due to their advantages of long cycle life, high power density and fast charging/discharging rate. [1][2][3][4][5] However, the relatively low energy density of supercapacitors seriously hinders their wide and practical applications. As a result, various electrode materials have been developed to prepare supercapacitors for energy storage applications.…”