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Structure, constitution of electrocatalytic hydrogen evolution electrode and manufacturing method thereof

A technology of a hydrogen evolution electrode and a manufacturing method, which is applied in the field of electrocatalytic hydrogen evolution, can solve the problems of short life, poor electrode stability, and easy poisoning of the electrode, and achieve the effects of long life, stable electrode performance, and high hydrogen evolution catalytic activity

Inactive Publication Date: 2006-04-26
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these electrodes all have shortcomings such as poor electrocatalytic hydrogen evolution activity, poor stability of the electrode, or easy poisoning and short life of the electrode.

Method used

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  • Structure, constitution of electrocatalytic hydrogen evolution electrode and manufacturing method thereof
  • Structure, constitution of electrocatalytic hydrogen evolution electrode and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1 adopts chemical method to manufacture activated carbon powder to carry metallic nickel catalyst powder, and make electrocatalytic hydrogen evolution electrode with it

[0025] 1) Manufacture of catalyst powder. Weigh 3 grams of activated carbon powder, add it to 15 ml of isopropanol, and ultrasonically disperse it for 30 minutes, then adjust the pH value of the solution to 9.0 with ammonia water. Add about 20ml of 0.5M NiCl dropwise to the solution 2 solution. Afterwards, excess hydrazine hydrate was added to the solution, and the solution was stirred at a constant temperature of 60° C. until the nickel ions in the solution reacted completely to form nickel metal. After the reaction is completed, the reaction product is fully washed with water once, and dried to obtain the activated carbon powder-supported metal nickel catalyst powder.

[0026] 2) Fabricate the catalytic layer. According to the weight ratio of 2:1, respectively weigh the activated carbo...

Embodiment 2

[0030] Example 2 Catalyst Ni-Co alloy powder is prepared by a metallurgical method and used to make an electrocatalytic hydrogen evolution electrode

[0031] 1) Manufacture Ni-Co alloy catalyst powder. Select an appropriate amount of metallic nickel and metallic cobalt according to the composition of the Ni-Co alloy, put them into a smelting furnace to melt and fully mix them uniformly. After that, the molten Ni-Co alloy liquid is solidified into Ni-Co alloy powder by using a high-speed liquid jet method to obtain the catalyst powder.

[0032] 2) Fabricate the catalytic layer. Weigh Ni-Co alloy powder, graphite powder and carboxymethyl cellulose emulsion respectively according to the weight ratio of 20:1:5, mix thoroughly and uniformly, and press at 50°C to form a film with a thickness of about 1 mm to obtain a catalytic layer.

[0033] 3) Fabrication of electrocatalytic hydrogen evolution electrodes. A porous stainless steel plate is used as the current collector layer 1, ...

Embodiment 3

[0036] Example 3 The method of physical vapor deposition (PVD method for short) is used to prepare carbon black powder loaded Mo-Co alloy catalyst powder, and use it to make electrocatalytic hydrogen evolution electrode

[0037] 1) Manufacture of catalyst powder. Select appropriate amount of metal nickel and metal cobalt according to the composition of the Ni-Co alloy, put them into a tungsten boat and place them in the vacuum chamber of the PVD equipment. At the same time, put the carbon black powder into the vacuum chamber of the PVD equipment. The metal nickel and metal cobalt in the tungsten boat are melted and gasified by electrification, so that they are evenly deposited on the surface of the carbon black powder, and the carbon black powder is prepared to carry Mo-Co alloy catalyst powder.

[0038] 2) Fabrication of electrocatalytic hydrogen evolution electrodes. According to the weight ratio of 5:5:20, weigh carbon black powder loaded Mo-Co alloy catalyst powder, acti...

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Abstract

The present invention is structure, composition and manufacture of electrically catalytic hydrogen separating electrode. The structure of the electrically catalytic hydrogen separating electrode consists of fluid collecting layer and catalyzing layer compounded together. The catalyzing layer has mixed catalyst powder and adhesive, and may have also conducting powder. The electrically catalytic hydrogen separating electrode in completely new structure has the features of high hydrogen separating catalyzing activity, stable performance, long service life, etc. and may be used widely in chloralkali industry, water electrolyzing industry, solar water electrolyzing hydrogen production, electrochemical hydrogen storing, hydrogen making system, etc.

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 electrocatalytic hydrogen evolution electrode. Background technique [0002] Electrocatalytic hydrogen evolution electrodes are widely used in chlor-alkali industry, electrolysis water industry, solar electrolysis water hydrogen production and electrochemical hydrogen storage and hydrogen production systems. At present, the electrodes used in the industry for electrocatalytic hydrogen evolution mainly include stainless steel electrodes, nickel or nickel-based alloy electrodes plated on the surface of carbon steel, and ruthenium oxide electrodes coated on the surface of titanium mesh. However, these electrodes all have disadvantages such as poor electrocatalytic hydrogen evolution activity, poor electrode stability, easy poisoning, and short service life. ...

Claims

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Application Information

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IPC IPC(8): C25B11/00
Inventor 王为张林森李振亚
Owner TIANJIN UNIV
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