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Hydrogen-evolution catalyst and preparation method thereof

A catalyst and hydrogen evolution technology, applied in the field of electrochemical catalysis, can solve the problems of scarcity, expensive Pt metal, high resistance, etc., and achieve the effect of increasing active sites, increasing surface area, and good conductivity

Inactive Publication Date: 2016-05-11
LANZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The most commonly used catalysts have been Pt-based catalysts, but Pt metal is very expensive and scarce, these defects limit the large-scale application of Pt-based catalysts in industry
In addition, water splitting is based on proton exchange membrane technology. In this process, Nafion and TPPE polymer binders will be used. The polymer itself has a large resistance, which is not conducive to the proton exchange reaction.

Method used

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  • Hydrogen-evolution catalyst and preparation method thereof
  • Hydrogen-evolution catalyst and preparation method thereof
  • Hydrogen-evolution catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] 1) Put two pieces (3×4cm 2 ) Carbon paper into 0.5MH 2 SO 4 Ultrasound in the solution for 30 minutes, take it out and wash it with ethanol and water several times, and place it in a vacuum drying oven at 30°C to dry;

[0062] 2) Take 0.66g of cobalt nitrate, 0.33g of nickel nitrate and 0.24g of urea and dissolve it in 80ml of distilled water under stirring. After stirring for 20 minutes, pour the solution into a 100ml Teflon liner; put the carbon paper obtained in step 1) vertically Put it into the Teflon liner, then put the liner into the autoclave, heat it to 120℃ in the muffle furnace after sealing, and keep it at this temperature for 16h; after cooling down, take out the carbon paper and find pink The colored solid grows on its surface. Place the carbon paper taken out in a beaker containing 20ml of distilled water for 5 minutes, then rinse it with water and ethanol several times, and dry it overnight in an oven at 80°C;

[0063] 3) Put the dried sample in step 2) in a ...

Embodiment 2

[0068] 1) Put two pieces (3×4cm 2 ) Conductive glass into 0.5MH 2 SO 4 Ultrasound in the solution for 30 minutes, take it out and wash it with ethanol and water several times, and place it in a vacuum drying oven at 30°C to dry;

[0069] 2) Take 0.66g cobalt nitrate, 0.33g nickel nitrate and 0.24g urea and dissolve it in 80ml distilled water under stirring. After stirring for 20 minutes, pour the solution into a 100ml Teflon liner; vertically the conductive glass obtained in step 1) Put it into the previous Teflon liner, then put the liner into the autoclave, heat it to 120℃ in the muffle furnace after sealing, and keep it at this temperature for 16h; after cooling, take out the conductive glass and find pink The colored solid grows on its surface. Place the removed conductive glass in a beaker containing 20ml of distilled water for 5 minutes, then rinse it with water and ethanol several times, and dry it overnight in an oven at 80°C;

[0070] 3) Put the dried sample in step 2) in ...

Embodiment 3

[0074] 1) Put two pieces (3×4cm 2 ) Carbon paper into 0.5MH 2 SO 4 Ultrasound in the solution for 30 minutes, take it out and wash it with ethanol and water several times, and place it in a vacuum drying oven at 30°C to dry;

[0075] 2) Dissolve 0.43g cobalt nitrate, 0.16g nickel nitrate and 0.33g urea in 80ml distilled water under stirring. After stirring for 20 minutes, pour the solution into a 100ml Teflon liner; vertically the carbon paper obtained in step 1) Put it into the previous Teflon liner, then put the liner into the autoclave, heat it to 120℃ in the muffle furnace after sealing, and keep it at this temperature for 16h; after cooling, take out the carbon paper and find pink The colored solid grows on its surface. Place the carbon paper taken out in a beaker containing 20ml of distilled water for 5 minutes, then rinse it with water and ethanol several times, and dry it overnight in an oven at 80°C;

[0076] 3) Put the dried sample in step 2) in a muffle furnace and annea...

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Abstract

The invention relates to a hydrogen-evolution catalyst and a preparation method thereof. The hydrogen-evolution catalyst comprises a substrate, and nickel cobalt and copper sulfite, which grow on the substrate. The hydrogen-evolution catalyst is the one supporting non-noble metal high-activity heterostructure, is great in conductivity and large in specific area and comprises a large amount of active sites, so that the hydrogen-evolution catalyst is good in hydrogen analyzing and catalyzing performance. In addition, the hydrogen-evolution catalyst disclosed by the invention is good in stability and can be stabilized for at least 50 hours.

Description

Technical field [0001] The invention belongs to the field of electrochemical catalysis, and specifically relates to a hydrogen evolution catalyst and a preparation method thereof. Background technique [0002] At present, the energy crisis has been deeply rooted in the hearts of the people, and fossil fuel reserves are limited. People need to develop new energy sources to replace traditional fossil energy. Hydrogen is the best choice for new alternative energy sources because of its cleanness and efficiency. Among the many methods for producing hydrogen, biological hydrogen production limits its large-scale industrial production due to its low conversion efficiency and small hydrogen production. The energy for photolysis of water to produce hydrogen comes from solar energy and is rich in resources. However, photocatalysts and photocatalytic systems generally have problems such as photocorrosion, narrow catalytic light zone and low energy conversion efficiency. Electrocatalytic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/043C25B11/06C25B1/04
CPCY02E60/36
Inventor 席聘贤安丽殷杰成文婧
Owner LANZHOU UNIVERSITY
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