Introduction to Ni3s2 Nanosheets

What is/are Ni3s2 Nanosheets?

Ni3s2 Nanosheets - To improve system’s efficiency, Ni3S2 nanosheets coated on Ni foam (Ni3S2-NF) was hydrothermally synthesized and applied as cathode material for HER. ^[1] Benefiting from the strong interfacial interaction between Ni3S2 and CeO2, the electron transfer is notably improved and the water oxidation activity of Ni3S2 nanosheets is significantly enhanced. ^[2] A binder-free Ni3S2 nanosheets wrapped NiMoO4 nanorods hybrid electrode (NiMoO4@Ni3S2) was prepared on conductive Ni-foam via a simple two-step hydrothermal process. ^[3] Herein, a layered C@MnNiCo–OH/Ni3S2 core-shell heterostructure, composed of grass-like Ni3S2 nanosheets, interlaced ultrathin MnNiCo–OH nanosheets and the coated amorphous carbon, has been successfully designed and synthesized by the facile hydrothermal and electrodeposition processes, which exhibits superior electrochemical performance. ^[4] Herein, cobalt-doped Ni3S2 nanosheets constructed flower-like architecture is grown on nickel foam (Co-Ni3S2/NF) toward OER application. ^[5] Herein, we propose a facile electroxidizing approach to produce β-Ni(OH)2 and subsequent induce abundant oxygen vacancies (Ov-Ni(OH)2) involving the sulfur leaching and oxide reorganization of Ni3S2 nanosheets. ^[6] Heterostructures made of Ni3S2 nanosheets–Ag nanorods on Ni foam are rationally designed as efficient electrocatalysts for the HER under alkaline conditions. ^[7] NiFe2O4–Ni3S2 nanosheets (NSs) were also prepared by direct hydrothermal sulfuration of the NiFe alloy for comparison. ^[8] In this work, an organic molecule of 2-methylimidazole (2-MI) using as a structural director, which is commonly used in metal–organic frameworks(MOFs), has been adopted to link those Ni3S2 nanosheets forming a shear-wall structure. ^[9] Ni3S2 nanosheets as a secondary structure can provide abundant active sites to increase specific capacitance. ^[10] The core-shell CoMoO4 nanorods@Ni3S2 nanosheets (CMO@NS) for supercapacitor were prepared by a facile two-step hydrothermal process accompanying with annealing treatment. ^[11] The hydrothermal-synthesized NiFe LDH nanosheets are uniformly coated on the Ni3S2 nanosheets skeleton forming 3D porous heterostructure arrays. ^[12] It is found that either GO or Fe salt tuned Ni3S2 nanosheets into thinner and smaller interconnected nanosheets anchored on rGO, which enhanced the charge transfer resistance and improved the active sites. ^[13] These materials require the well-organized integration of dual carbon layers with different morphologies and active Ni3S2 nanosheets to form a multifunctional electrocatalyst. ^[14] In this paper, a core-shell multi-dimensional nanoarchitecture based on the uniform and well-aligned 0-dimension (0D) Co(OH)2 nanoparticles (NPs)/2-dimension (2D) Ni3S2 nanosheets (NSs) composites grown on 1-dimension (1D) SiC nanowire networks (NNs) skeletons with splendid resistances to oxidation and erosion, good conductivity and large specific surface area is rationally designed and constructed by a simple hydrothermal and electrodeposition route for the first time, which can act as an advanced free-standing electrode for high-performance asymmetric supercapacitor (ASC). ^[15] We created a simple electrodeposition method of preparing Ni3S2 nanosheets deposited on 3D hemp-activated carbon supported by a Ni foam. ^[16] Co9S8–Ni3S2 HNTs are composed of inner 1D Co9S8 nanotubes surrounded by outer 2D Ni3S2 nanosheets. ^[17] Herein, 3D-interconnected and porous Co-doped Ni3S2 nanosheets supported on nickel foam (NF) are rationally designed and fabricated by a facile and novel deep eutectic solvent (DES) derived solvothermal sulfurization process. ^[18] Herein, leaf‐like Ni3S2 nanosheets grown on the nickel foam fabricated by a novel one‐step dynamic hydrothermal method is demonstrated. ^[19] Thanks to the synergistic effect and catalytic role transformation between CdS nanorods and Ni3S2 nanosheets, CSNS was determined to be a new type of multifunctional noble-metal-free catalyst, which exhibited highly stable and efficient H2 production properties in EC, PEC and PC hydrogen production systems. ^[20] Hence, Ni3S2 nanosheets were utilized as a novel cathode for both Zn batteries and hybrid Zn–air–metal batteries (ZAMBs), of which the energy storage mechanisms were clearly demonstrated. ^[21] The NiO nanobelts exhibited a power density of 2963 W kg−1 and energy density of 57 W h kg−1, which were significantly higher than those of pristine NiO nanoflakes, nanorods, 2D thin films, porosity-tuned nanowalls, nanofibers, and the heterostructures with the NiCo2O4 and Ni3S2 nanosheets. ^[22] Two possible mechanisms are suggested to explain this enhancement: (i) the oxygen-doped sulfur-deficient Ni3S2 (Ni3S2-xOx) layer should have been formed on the surface of Ni3S2 nanosheets, which brings about the electronic environment modulation, resulting in the optimized hydrogen (H*) adsorption/desorption and higher electrical conductivity; (ii) the developed nanosheets/microspheres structure with poor crystallinity increases the number of active sites in hydrogen generation. ^[23] Here, vanadium doped Ni3S2 nanosheets array decorated on carbon fiber cloth (V-Ni3S2/CC) is successfully constructed as 3D dual-functional electrodes for efficient overall water splitting. ^[24] The Ni3S2 nanosheets are uniformly arranged on CC matrix, benefitting the electrochemical activity, and the introduced rGO enable the additional ion transport path and prevent Ni3S2 from dissolving into electrolyte during the cycling process. ^[25] The Ni3S2 nanosheets are electrodeposited onto the highly conducting Au dendrites that are grown over 3D-graphene (3DG) framework. ^[26] Herein, we present an experimental and theoretical exploration to demonstrate the in situ formation of binary MXene/Ni3S2 nanosheets over three-dimensional Ni foam (NF) in target functioning as a self-supported and highly effective electrocatalyst for alkaline HER. ^[27] The as-synthesized product harvests the advantages of the high electrical conductivity of the Co3O4 nanowire arrays, large surface area provided by the Ni3S2 nanosheets, and the efficient ion diffusion pathway offered by the self-supported structure. ^[28] Detailed investigation unveils that the excellent OER performance of VOx/Ni3S2@NF is tightly associated with its rationally combined chemical composition and hierarchical nanostructure; remarkably, the presence of vanadium oxide nanocrystals in the Ni3S2 nanosheets boosts the OER activity by strengthening the Ni–O bond. ^[29] As a result of the Cu incorporation, the NF-supported Ni3S2 nanosheets exhibited improved electronic conductivity with higher electrochemical surface area (ECSA). ^[30]

Doped Ni3s2 Nanosheets

Herein, cobalt-doped Ni3S2 nanosheets constructed flower-like architecture is grown on nickel foam (Co-Ni3S2/NF) toward OER application. ^[1] Herein, 3D-interconnected and porous Co-doped Ni3S2 nanosheets supported on nickel foam (NF) are rationally designed and fabricated by a facile and novel deep eutectic solvent (DES) derived solvothermal sulfurization process. ^[2] Here, vanadium doped Ni3S2 nanosheets array decorated on carbon fiber cloth (V-Ni3S2/CC) is successfully constructed as 3D dual-functional electrodes for efficient overall water splitting. ^[3]