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Tetracobalt trisulfide nanometer hollow tube@foam nickel composite array material and preparation method and application thereof

A nano-composite array technology of tetracobalt trisulfide, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve problems such as unfavorable large-scale production, limited reserves of Pt group precious metals, and high price , to achieve good electrocatalytic activity for hydrogen evolution reaction, rich sources of raw materials, and low price

Active Publication Date: 2017-09-29
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the HER process, Pt group noble metals have the best electrocatalytic hydrogen evolution activity, but Pt group noble metals have limited reserves in the earth's crust and are relatively expensive, which is not conducive to large-scale production as HER catalysts.

Method used

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  • Tetracobalt trisulfide nanometer hollow tube@foam nickel composite array material and preparation method and application thereof
  • Tetracobalt trisulfide nanometer hollow tube@foam nickel composite array material and preparation method and application thereof
  • Tetracobalt trisulfide nanometer hollow tube@foam nickel composite array material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A preparation method of tetracobalt trisulfide nano hollow tube@foamed nickel composite array material, comprising the following steps:

[0042] (1) The nickel foam with a size of 1cm × 4cm was subjected to surface degreasing and degreasing treatment in acetone, then washed with hydrochloric acid solution to remove surface oxides, and then washed the surface with ethanol and ultrapure water, and then vacuum-dried.

[0043] (2) cobalt chloride hexahydrate, urea are added in 30ml deionized water with the ratio of 2mmol:10mmol, stir to dissolve rapidly, obtain uniform solution A, solution A is transferred in the reactor of polytetrafluoroethylene lining, The nickel foam obtained in the step (1) was placed in it, the reaction kettle was closed, put into a blast drying oven, and heated at 90° C. for 8h;

[0044] (3) Take out the nickel foam after the reaction in step (2), put it into a vacuum drying oven, and dry it at 60° C. for 6 hours to obtain a product of nickel foam su...

Embodiment 2

[0049] A preparation method of tetracobalt trisulfide nano hollow tube@foamed nickel composite array material, comprising the following steps:

[0050] (1) The nickel foam with a size of 1cm × 4cm was subjected to surface degreasing and degreasing treatment in acetone, and then washed with hydrochloric acid solution to remove surface oxides, and then the surface was washed with ethanol and ultrapure water, and then vacuum-dried.

[0051] (2) cobalt chloride hexahydrate, urea are added in 40ml deionized water with the ratio of 3mmol:15mmol, stir to dissolve rapidly, obtain homogeneous solution A, solution A is transferred in the reaction kettle of polytetrafluoroethylene lining, The nickel foam obtained in step (1) was placed in it, the reaction kettle was closed, put into a blast drying oven, and heated at 100 ° C for 10 h;

[0052] (3) Take out the nickel foam after the reaction in step (2), put it into a vacuum drying oven, and dry it at 60° C. for 6 hours to obtain a produc...

Embodiment 3

[0057] A preparation method of tetracobalt trisulfide nano hollow tube@foamed nickel composite array material, comprising the following steps:

[0058] (1) The nickel foam with a size of 1cm × 4cm was subjected to surface degreasing and degreasing treatment in acetone, and then washed with hydrochloric acid solution to remove surface oxides, and then the surface was washed with ethanol and ultrapure water, and then vacuum-dried.

[0059] (2) cobalt chloride hexahydrate, urea are added in 35ml deionized water with the ratio of 2mmol:10mmol, stir to dissolve rapidly, obtain homogeneous solution A, solution A is transferred in the reactor of polytetrafluoroethylene lining, and place the nickel foam obtained in step (1) in it, close the reaction kettle, put it into a blast drying oven, and heat it at 95°C for 8h;

[0060] (3) Take out the nickel foam after the reaction in step (2), put it into a vacuum drying oven, and dry it at 60° C. for 6 hours to obtain a product of nickel foa...

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Abstract

The invention provides a tetracobalt trisulfide nanometer hollow tube@foam nickel composite array material and a preparation method and application thereof. Compared with the prior art, a hydrothermal method for preparing the tetracobalt trisulfide nanometer hollow tube@foam nickel composite array material has the advantages of mature and stable synthesizing process, easiness in operation, low influence by the environment, easiness in controlling and high yield. The synthesized tetracobalt trisulfide nanometer hollow tube@foam nickel composite array material is of a one-dimensional hollow tubular structure and has a large surface-specific area, and a Co4S3 nanotube directly grows on a foam nickel substrate with high conductivity, so that a product has high electrocatalytic activity in a hydrogen evolution reaction. Compared with other electro-catalysts loaded with noble metal elements, the tetracobalt trisulfide nanometer hollow pipe@foam nickel composite array material has the advantages that a transition metal is effectively combined with foam nickel to serve as an electro-catalyst of the hydrogen evolution reaction, and raw materials are rich in sources and cheap, so that the cost of the electro-catalyst of the hydrogen evolution reaction is lowered greatly.

Description

technical field [0001] The invention belongs to the field of material preparation, and in particular relates to a tetracobalt trisulfide nanometer hollow tube@foam nickel composite array material, a preparation method and an application thereof, which are used as a catalyst for electrolysis of water and hydrogen evolution reaction. Background technique [0002] Growing global attention to the energy crisis and environmental pollution has created an urgent need to develop renewable, carbon-free energy sources. Hydrogen, due to its clean, efficient and renewable characteristics, is considered to be a potential clean energy alternative to fossil fuels. [0003] Using electrolysis of water to produce hydrogen, pure hydrogen can be obtained at the cathode, the preparation conditions are relatively mild, and the abundant water resources on the earth reduce the cost to a certain extent. Therefore, electrolysis of water to produce hydrogen will become the core technology of the fut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/043B01J35/10C25B1/04C25B11/06
CPCC25B1/04C25B11/04B01J27/043B01J35/33B01J35/61Y02E60/36
Inventor 王伟智汪欣欣徐雅飞
Owner ANHUI NORMAL UNIV
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