Water electrolysis catalyst as well as preparation method and application thereof

A water electrolysis catalyst and catalyst technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, electrolysis processes, etc., can solve the problems of poor hydrogen evolution catalyst effect and high overpotential of hydrogen evolution electrodes, and achieve excellent and low use effects. Effect of electrolysis voltage and increase of specific surface area

Inactive Publication Date: 2017-05-31
刘贝涛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Alkaline water electrolysis technology is often used at present, but the overpotential of the hydrogen evolution electrode is high, and the effect of the hydrogen evolution catalyst is not very good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 0.8727 nickel nitrate (Ni(NO 3 ) 2 ·6H 2 O), 0.1455g cobalt nitrate (Co(NO 3 ) 2 ·6H 2 O), 0.6650g molybdenum nitrate (Mo(NO 3 ) 3 ·5H 2 O) Dissolve in 50 ml deionized water. Add 10g of ammonium oxalate and dissolve in 50ml of deionized water, stir to dissolve, then add to the above mixed solution, place the mixed solution in a water bath at 80°C, stir and evaporate to dryness, and then dry in an oven at 60°C for 12h. The obtained solid was placed in a tube furnace protected by nitrogen, first raised to 350°C at 10°C / min, then raised to 450°C at 5°C / min, and kept at 450°C for 1 hour. After the product was cooled to room temperature, it was ground with a mortar to obtain a comparative example-catalyst Ni 0.6 Mo 0.3 co 0.1 .

Embodiment 2

[0022] 0.8727 nickel nitrate (Ni(NO 3 ) 2 ·6H 2 O), 0.1999g chromium nitrate (Cr(NO3) 3 9H2O), 0.6650g molybdenum nitrate (Mo(NO3) 3 ) 3 ·5H 2 O) Dissolve in 50 ml deionized water. Add 10g of ammonium oxalate and dissolve in 50ml of deionized water, stir to dissolve, then add to the above mixed solution, place the mixed solution in a water bath at 80°C, stir and evaporate to dryness, and then dry in an oven at 60°C for 12h. The obtained solid was placed in a tube furnace protected by nitrogen, first raised to 350°C at 10°C / min, then raised to 450°C at 5°C / min, and kept at 450°C for 1 hour. After the product was cooled to room temperature, it was ground with a mortar to obtain a comparative example-catalyst Ni 0.6 Mo 0.3 Cr 0.1 .

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PUM

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Abstract

The invention discloses a water electrolysis catalyst. The catalyst is characterized by being represented by a molecule NixMy, wherein x is more than 0 and less than or equal to 1, y is more than 0 and less than or equal to 0.4, and M is one or more than one of Mo, Cr and Co. The invention further discloses a preparation method and application of the water electrolysis catalyst. The catalyst disclosed by the invention is a compound (a homogeneous phase), and the content of doping components is low; and a lot of catalysts in other related inventions are mixtures, and the doping components independently form phases so that the catalytic activity is influenced. When the catalyst disclosed by the invention is used for a cathode of an alkaline water electrolysis device under the same current density, the utilization effect is better than that of the catalyst which is not doped with the element.

Description

technical field [0001] The invention relates to an alkaline water electrolysis hydrogen catalyst, in particular to a high-efficiency catalyst that can be applied to alkaline water electrolysis, renewable fuel cells or hydrogen production electrodes in various electrolysis applications. Background technique [0002] Hydrogen is a clean and efficient energy carrier, which is renewable and non-polluting. Hydrogen production by electrolysis of water is an important means of hydrogen production and a very mature technology for producing high-purity hydrogen. At present, the alkaline water electrolysis technology is often used, but the overpotential of the hydrogen evolution electrode is high, and the effect of the hydrogen evolution catalyst is not very good. Contents of the invention [0003] The object of the present invention is to provide an improved cathode catalyst for an alkaline water electrolysis device, the catalyst is based on nano-nickel doped with other elements (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J23/883B01J23/887C25B1/04C25B11/06
CPCB01J23/755B01J23/883B01J23/8878C25B1/04C25B11/04Y02E60/36
Inventor 刘贝涛
Owner 刘贝涛
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