One-pot synthesis of hierarchically nanostructured Ni3S2 dendrites as active materials for supercapacitors

Mechanical alloying synthesis of Ni 3 S 2 nanoparticles as electrode material for pseudocapacitor with excellent performances

“…The C m calculated from the discharge time using the equation of (1) were 911, 880, 795, 700, and 560 F g À1 at the current densities of 0.5, 1, 2, 4, and 8 A g À1 , respectively. The results are better than the hierarchically nanostructured Ni 3 S 2 -120 [20] sample that prepared by one-pot hydrothermal route and Ni 3 S 2 @MoS 2 core/shell nanorod arrays [22] prepared by one-pot hydrothermal route. We can also understand from the curve that 62% capacity retention was obtained even at a high current density of 8 A g À1 , as shown in Fig.…”

Low temperature fabrication of hydrangea-like NiCo2S4 as electrode materials for high performance supercapacitors

“…Besides, the BET surface area can be calculated to be 74.8 m transition to NiSOH, CoSO, CoSOH [11] and [12]. With the increasing scan rate, the anodic peaks shift towards higher potential and the cathodic peaks shift towards lower potential which is induced by greater electric polarization [7].…”

“…The electrochemical performances of supercapacitors mainly depend on the property of electrode materials, including carbon materials, conducting polymers and transition metal oxides/hydroxides/sulfides [4]; Among them, transition metal oxides/sulfides (such as MoS 2 [5], CuS [6], Ni 3 S 2 [7]) are the most promising candidate materials for supercapacitors. Compared with binary metal oxides/sulfides, ternary metal oxides/sulfides exhibit much higher specific capacitance owing to the rich redox reaction sites of their mixed valence and the synergistic effect of different cations [8].…”

One-pot electrodeposition synthesis of ZnO/graphene composite and its use as binder-free electrode for supercapacitor

“…[18] Therefore, the pseudocapactive materials are being explored for fabrication supercapacitors to improve the energy density since pseudocapacitors store and deliver energy through redox reaction, resulting in high specific capacitance. [19] Transition metal oxides such as MnO2, [20] NiO, [21] Co3O4, [7] are generally recognized as ones of the most promising candidates for pseudocapacitor electrodes.…”