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A kind of molybdenum disulfide/nickel selenide composite material and its preparation method and application

A composite material, molybdenum disulfide technology, used in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve the problem of high quality composite catalyst substrates, unable to meet the requirements of catalytic activity, expensive precious metal catalysts, etc. problem, to achieve the effect of uniform particle size, good crystallinity and uniform dispersion

Active Publication Date: 2022-02-08
哈尔滨凯美斯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems that the existing noble metal catalysts for hydrogen evolution reaction are expensive, unfavorable for large-scale industrial production, high-quality composite catalyst substrates and unable to meet the requirements of catalytic activity, and provide a molybdenum disulfide / nickel selenide composite material And its preparation method and application

Method used

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  • A kind of molybdenum disulfide/nickel selenide composite material and its preparation method and application
  • A kind of molybdenum disulfide/nickel selenide composite material and its preparation method and application
  • A kind of molybdenum disulfide/nickel selenide composite material and its preparation method and application

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specific Embodiment approach 1

[0039] Embodiment 1: This embodiment is a molybdenum disulfide / nickel selenide composite material composed of molybdenum disulfide and nickel selenide nanoparticles, and molybdenum disulfide is coated on the outer surface of the nickel selenide nanoparticles; The molybdenum disulfide is wrinkled molybdenum disulfide nanosheets, uniform and thin in thickness, with a thickness of 2nm to 5nm; the nickel selenide nanoparticles have good crystallinity, have a cubic phase crystal structure, uniform size, and a particle size of 50nm ~100nm.

specific Embodiment approach 2

[0040] Specific implementation mode two: the present implementation mode is a kind of preparation method of molybdenum disulfide / nickel selenide composite material, is finished according to the following steps:

[0041] 1. Preparation of nickel selenide nanoparticles:

[0042] ①. First, mix selenium powder and NaBH 4 Add it into N,N-dimethylformamide, then stir and react for 0.5h~1.5h at a stirring speed of 200r / min~400r / min, then add NiCl 2 ·6H 2 O, finally stirring and reacting for 0.5h to 1.5h at a stirring speed of 200r / min to 400r / min to obtain a black solution;

[0043] The volume ratio of the quality of the selenium powder described in step 1. to N,N-dimethylformamide is (0.1g~0.5g): 30mL;

[0044] NaBH described in step 1. 4 The mass ratio of N,N-dimethylformamide to the volume is (0.05g~0.3g):30mL;

[0045] NiCl described in step 1. 2 ·6H 2 The mass ratio of O to N,N-dimethylformamide is (0.2g~0.7g):30mL;

[0046] ②. Transfer the black solution to a polytetraf...

specific Embodiment approach 3

[0061] Specific embodiment three: the difference between this embodiment and specific embodiment two is: the quality of the selenium powder described in step 1. and the volume ratio of N,N-dimethylformamide is (0.2g~0.4g) : 30mL; the NaBH 4 The volume ratio of the mass of N,N-dimethylformamide to N,N-dimethylformamide is (0.1g~0.2g):30mL; the NiCl 2 ·6H 2 The mass ratio of O to N,N-dimethylformamide is (04g-0.6g):30mL. Other steps are the same as in the second embodiment.

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Abstract

A molybdenum disulfide / nickel selenide composite material and its preparation method and application relate to a composite material and its preparation method and application. The purpose of the present invention is to solve the problems that the existing precious metal catalysts for hydrogen evolution reaction are expensive, unfavorable for large-scale industrial production, high-quality composite catalyst substrates and unable to meet the requirements of catalytic activity. A molybdenum disulfide / nickel selenide composite material is composed of molybdenum disulfide and nickel selenide nanoparticles, and the molybdenum disulfide is coated on the outer surface of the nickel selenide nanoparticles. Methods: 1. Prepare nickel selenide nanoparticles; 2. Composite to obtain molybdenum disulfide / nickel selenide composite material. A molybdenum disulfide / nickel selenide composite material is used to electrolyze water to produce hydrogen. The invention can obtain a molybdenum disulfide / nickel selenide composite material.

Description

technical field [0001] The invention relates to a composite material and its preparation method and application. Background technique [0002] With the gradual reduction of fossil energy, hydrogen fuel, as a clean, safe and efficient sustainable new energy, has attracted more and more attention. The largest source of hydrogen fuel is water. Hydrogen production by electrolysis of water can store and convert renewable energy such as solar energy, wind energy, and tidal energy using hydrogen as a medium. The biggest problem of hydrogen production by electrolysis of water is high energy consumption. To reduce the electrical energy required to drive the water electrolysis reaction, the use of electrocatalysts is the most effective means. At present, hydrogen evolution reaction catalysts are mainly divided into two categories: noble metal catalysts and non-noble metal catalysts. Noble metal catalysts include platinum, ruthenium, indium and their oxides, and the like. Among the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/057B01J35/02C25B1/04C25B1/50C25B11/091B01J35/00
CPCB01J27/0573C25B1/04C25B11/091B01J35/33B01J35/40Y02E60/36
Inventor 张喜田武立立李珍高红马新志
Owner 哈尔滨凯美斯科技有限公司
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