Synthetic method of Ni3S2 microrod array

Abstract

The invention discloses a synthetic method of Ni3S2 microrod array. The synthetic method comprises following steps: 1, nickel foam to be treated is subjected to full ultrasonic cleaning and drying; 2, a vanadium source and a sulfur are dissolved in an appropriate amount of a solvent at a molar ratio of 1: (1-11), and full stirring is carried out so as to obtain a solution A, wherein the concentration of the vanadium source in the solution A is controlled to be 10 to 40mM; 3, the solution A is delivered into a hydrothermal reactor with a polytetrafluoroethylene lining, the nickel foam obtained via pretreatment in step 1 is immersed in the solution A, the hydrothermal reactor is sealed, and solvothermal reaction is carried out at 70 to 200 DEG C for 6 to 30h; and 4, after reaction, the hydrothermal reactor is cooled at room temperature, and an obtained product is washed fully and dried so as to obtain the Ni3S2 microrod array. Operation of the synthetic method is simple; reaction conditions are mild; reaction period is short; the purity of prepared Ni3S2 is high; the morphology is uniform; and excellent electrocatalytic hydrogen evolution performance is achieved.

Description

technical field [0001] The invention belongs to the technical field of surface treatment of electrode materials, in particular to a Ni 3 S 2 Synthesis of microrod arrays. Background technique [0002] With the massive consumption of non-renewable energy such as coal, oil, and natural gas, people will face a serious energy crisis in the future. The search for a clean, safe and renewable energy has become a current research hotspot. As an ideal energy carrier, hydrogen energy has high hopes for it. Electrocatalytic water splitting technology is one of the effective ways to produce hydrogen. The core issue of this technology is to develop efficient and cheap water splitting catalysts. At present, noble metal-based catalysts (such as Pt, Ru, or Ir, etc.) are the best catalysts for water splitting, but the disadvantages of high price and low reserves greatly limit the wide application of such catalysts. [0003] Transition metal sulfides, with the advantages of abundant cont...

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Problems solved by technology

China Invention Announcement Patent No. 201610552386.6 discloses a lithium-ion battery negative electrode GO-PANT-Ni 3 S 2 The preparation method of composite materials, but the operation steps are complicated, and the reaction cycle is long, and the technology is difficult

China Invention Announcement Patent No. 201510657154.2 discloses a flower-shaped Ni 3 S 2 / The preparation of graphene three-dimensional composite electrode material, first react with hydrothermal method, and then adopt the method of calcining in tube furnace to obtain a flower-shaped Ni 3 S 2 / Graphene three-dimensional composite electrode material, the reaction conditions are harsh, and the cost is high

Ni 3 S 2 nanosheets array supported on Ni foam: A novel efficient three-dimensional hydrogen-evolving electrocatalyst in both neutral and basic solutions et al obtained a Ni foam composed of network microstructure 3 S 2 Nanosheets, but the obtained hydrogen evolution overpotential is large and the catalytic activity is poor

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