Recent advances in various applications of nickel cobalt sulfide-based materials

Abstract

In recent years, nickel cobalt sulfides (NCSs) have received much attention as promising functional materials in various application fields, mainly due to their much low price, abundant raw materials and...

Enhancement of the capacitive performance of Ni2CoS4 by incorporation of graphitized carbon dots

“…22,[24][25][26][27][28][29] Hence, nickel cobalt sulfide is a potential electrode material for high-performance energy storage devices. 30,31 However, during preparation, nickel cobalt sulfide tends to agglomerate, resulting in large particle sizes and poor electrical conductivity, which leads to poor rate performance and cycling stability. 28,32 To solve this matter, a viable strategy is to introduce carbon materials as support.…”

CoNi2S4 Electrode with High Mass‐Loading for High‐Energy‐Density Supercapacitor: Role of S‐Containing Anions Exchange

“…[1][2][3][4][5][6][7] Moreover, ternary Ni/ Co thiospinel sulfides, such as CoNi 2 S 4 , NiCo 2 S 4 and FeCo 2 S 4 , exhibit bimetallic synergistic effect for providing rich redox process, drawing ahead of binary sulfides. [8] However, ternary Ni/Co sulfide electrodes still suffer from poor electrochemical stability, low coulombic efficiency and rate capability. [9] Coupling Ni/Co sulfide nanostructures with conductive substrate as self-supported electrodes is effective to improve the overall conductivity and strengthen the structural stability.…”

“…Ternary Ni/Co sulfides have aroused attention recently in charge storage and electrocatalysis device with the advantages of improved electrical conductivity, high specific capacity and desirable electrochemical activity, which is superior to their ternary oxide/hydroxide counterparts [1–7] . Moreover, ternary Ni/Co thiospinel sulfides, such as CoNi 2 S 4 , NiCo 2 S 4 and FeCo 2 S 4 , exhibit bimetallic synergistic effect for providing rich redox process, drawing ahead of binary sulfides [8] . However, ternary Ni/Co sulfide electrodes still suffer from poor electrochemical stability, low coulombic efficiency and rate capability [9] .…”

Engineering NiCo2S4 nanoparticles anchored on carbon nanotubes as superior energy-storage materials for supercapacitors

“…26–29 To date, nickel–cobalt sulfides with various nanostructures, including nanowires, nanosheets and nanoparticles, have been extensively studied. 30–32 However, the nanomaterials tend to reunite into agglomeration which leads to low specific surface area and the degradation of electrochemical properties. 33,34…”

“…[26][27][28][29] To date, nickel-cobalt suldes with various nanostructures, including nanowires, nanosheets and nanoparticles, have been extensively studied. [30][31][32] However, the nanomaterials tend to reunite into agglomeration which leads to low specic surface area and the degradation of electrochemical properties. 33,34 Importantly, previous reports usually regard CNT as a carbon nanomaterials compounded with NiCo 2 S 4 , focusing more on its low cost, high stability and high conductivity.…”