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Amorphous plating layer with high hydrogen evolution catalytic activity and preparation method thereof

A catalytic activity and coating technology, applied in the field of electrocatalytic hydrogen evolution, can solve the problems of high price, difficult to large-scale industrial production, complex process, etc., and achieve the effects of short preparation process, improved power utilization efficiency, and simple equipment

Inactive Publication Date: 2011-07-20
GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Regarding the research on the preparation process, in recent years, it has been reported that a variety of physical and chemical methods have been used to prepare hydrogen evolution electrode materials. Among them, physical methods such as ion plating, ion sputtering and ion implantation can be used to obtain a uniform and firm surface structure. However, these processes are complex, expensive, and difficult for large-scale industrial production.
The electrodeposition method has the advantages of simple process, low cost, uniform coating, easy control of thickness, wide selection of coating composition and materials, but there is no report on the preparation of high hydrogen evolution catalytic active electrode materials by electrodeposition.

Method used

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  • Amorphous plating layer with high hydrogen evolution catalytic activity and preparation method thereof
  • Amorphous plating layer with high hydrogen evolution catalytic activity and preparation method thereof
  • Amorphous plating layer with high hydrogen evolution catalytic activity and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Take the copper sheet and cut it into a sample of 15mm×15mm×4mm, and weld the copper wire on it, and seal the non-working surface with epoxy resin. The working surface is polished with 360#---1000# water sandpaper in sequence, and then polished with a polishing machine, and then pre-treatment processes such as alkali cleaning, acetone degreasing, hot water washing, strong etching and weak etching are used. Deionized water cleaning, put into the plating solution. The anode selected is a nickel plate, and the area ratio of yin and yang is 1:3. The process conditions of electrodeposition are as follows: plating solution pH=8, temperature T=25°C, electrodeposition time t=60min, current density Dk=10mA / cm 2 . The composition of the electroplating solution is: NiSO 4 ·6H 2 O 40g / L, CoSO 4 ·7H 2 O 2g / L, Na 2 MoO 4 2H 2 O 15g / L, Na 3 C 6 h 5 o 7 2H 2 O 10g / L and Na 2 CO 3 60g / L. The prepared amorphous coating was tested, and the weight percentages of Ni, Mo and...

Embodiment 2

[0023] Take the copper sheet and cut it into a sample of 15mm×15mm×4mm, and weld the copper wire on it, and seal the non-working surface with epoxy resin. The working surface is polished with 360#---1000# water sandpaper in sequence, and then polished with a polishing machine, and then pre-treatment processes such as alkali cleaning, acetone degreasing, hot water washing, strong etching and weak etching are used. Deionized water cleaning, put into the plating solution. The anode selected is a nickel plate, and the area ratio of yin and yang is 1:3. The process conditions of electrodeposition are as follows: plating solution pH=9, temperature T=30°C, electrodeposition time t=60min, current density D k =20mA / cm 2 . The composition of the electroplating solution is: NiSO 4 ·6H 2 O 60g / L, CoSO 4 ·7H 2 O 5g / L, Na 2 MoO 4 2H 2 O20g / L, Na 3 C 6 h 5 o 7 2H 2 O 10g / L and Na 2 CO 3 80g / L. The prepared amorphous coating was tested, and the weight percentages of Ni, Mo a...

Embodiment 3

[0025]Take the copper sheet and cut it into a sample of 15mm×15mm×4mm, and weld the copper wire on it, and seal the non-working surface with epoxy resin. The working surface is polished with 360#---1000# water sandpaper in sequence, then polished with a polishing machine, and then pre-treated by alkali cleaning, acetone degreasing, hot water washing, strong etching and weak etching, etc. Deionized water cleaning, put into the plating solution. The anode selected is a nickel plate, and the area ratio of yin and yang is 1:3. The process conditions of electrodeposition are as follows: plating solution pH=10, temperature T=35°C, electrodeposition time t=60min, current density D k =20mA / cm 2 . The composition of the electroplating solution is: NiSO 4 ·6H 2 O 80g / L, CoSO 4 ·7H 2 O 8g / L, Na 2 MoO 4 2H 2 O 30g / L, Na 3 C 6 h 5 o 7 2H 2 O 15g / L and Na 2 CO 3 100g / L.

[0026] figure 2 For the small angle grazing figure of the Ni-Mo-Co amorphous coating prepared in emb...

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Abstract

The invention relates to an amorphous plating layer with high hydrogen evolution catalytic activity and a preparation method thereof, relating to components, a structure and a preparation method of an amorphous plating layer. The amorphous plating layer is mainly characterized by containing ternary alloys, i.e., Ni, Mo and Co, the appearance of the plating layer presents silver white, the surface of the plating layer is smooth and fine, and the plating layer is of an amorphous structure. The amorphous plating layer is electrically deposited on a metal substrate with an electro-deposition method, the adopted plating solution comprises the following components of: 40-80g / L of NiSO4.6H2O, 10-40 g / L of NaMoO4.2H2O, 1-10g / L of CoSO4.7H2O, 10-60g / L of C6H5Na3O7.2H2O and 60-120g / L of Na2CO3. The amorphous plating layer provided by the invention has higher hydrogen evolution catalytic activity and can be used for hydrogen evolution electrodes in chlor-alkali industry, a brine electrolysis process, solar brine electrolysis hydrogen production, electrochemical hydrogen production and other systems.

Description

technical field [0001] The invention belongs to the field of electrocatalytic hydrogen evolution, and in particular relates to the structure, composition and manufacturing method of an amorphous coating with high hydrogen evolution catalytic activity. Background technique [0002] Hydrogen energy is an efficient and clean "green energy", which has been widely valued by countries all over the world. Electrocatalytic hydrogen evolution electrodes are widely used in chlor-alkali industry, electrolytic water industry, solar electrolysis hydrogen production and electrochemical hydrogen production. At present, the electrodes used in the industry for electrocatalytic hydrogen evolution mainly include stainless steel electrodes, titanium mesh surface-coated ruthenium oxide electrodes, and the like. These electrodes all have the disadvantages of poor electrocatalytic hydrogen evolution activity, high hydrogen evolution overpotential, and high energy consumption. Therefore, it is of ...

Claims

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Application Information

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IPC IPC(8): C25B11/06C22C45/00C22C45/02C25D3/56
CPCY02P20/133
Inventor 尉海军王国庆朱磊简旭宇王忠蒋利军
Owner GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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