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Electro-deposition method for preparing foamed nickel-molybdenum alloy

An electrodeposition and nickel foam technology, applied in electrodes, electrolysis process, electrolysis components, etc., can solve the problems of poor air quality in the production workshop, volatile ammonia water, unstable quality of solution and electrodeposited layer, etc., and achieve stable coating quality, The effect of reducing air pollution and avoiding pH instability

Pending Publication Date: 2019-09-27
CHINA INSTITUTE OF ATOMIC ENERGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high temperature during electrodeposition, ammonia water is easy to volatilize, resulting in unstable quality of solution and electrodeposited layer, and poor air quality in the production workshop

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] An electrodeposition method for preparing a foamed nickel-molybdenum alloy, the method is to electrodeposit a nickel-molybdenum alloy on a foamed nickel substrate, and the electrodeposition liquid formula used in the method comprises nickel sulfate, sodium molybdate or potassium molybdate, sodium citrate, Sodium chloride or potassium chloride or nickel chloride, ethanolamine, 1,4-butynediol, saccharin, the method comprises the following steps:

[0035] (1) Dissolve nickel sulfate, sodium molybdate, sodium citrate, and sodium chloride in deionized water successively, and each liter of electrodeposition solution is 125g, 45g, 150g, and 10g, respectively.

[0036] (2) dissolving monoethanolamine in the solution obtained in step (1), so that the pH value of the solution is 8.5 to 9.5, and the amount of monoethanolamine in each liter of electrodeposition solution is 31 ml;

[0037] (3) adding 1,4-butynediol and saccharin into the solution described in step (2) to obtain an e...

Embodiment 2

[0043]The difference from Example 1 is that nickel sulfate, sodium molybdate, sodium citrate, sodium chloride, diethanolamine, 1,4-butynediol, and saccharin are respectively 110 g per liter of electrodeposition solution in the formula used in this method , 40g, 130g, 6g, 25ml, 0.05g, 0.2g, and adding NaOH to adjust the pH value of the electrodeposition solution between 8.5 and 9.5. The anode in step (4) is nickel, molybdenum, carbon plate; The temperature in step (5) is 50 ℃, and apparent cathode current density is 150mA / cm 2 .

[0044] The electrodeposition layer obtained by the method is of good quality, the electrodeposition solution system is stable, the operation is convenient, and there is no air pollution. The molybdenum content in the electrodeposition layer reaches 24.2%, which can meet the needs of industrial production.

Embodiment 3

[0046] The difference from Example 1 is that nickel sulfate, sodium molybdate, sodium citrate, sodium chloride, triethanolamine, 1,4-butynediol, and saccharin are respectively 140 g per liter of electrodeposition solution in the formula used in this method , 55g, 170g, 14g, 38ml, 0.2g, 0.8g, and adding NaOH to adjust the pH value of the electrodeposition solution between 8.5 and 9.5. The temperature in step (5) is 60°C, and the apparent cathode current density is 155mA / cm 2 .

[0047] The electrodeposition layer obtained by the method is of good quality, the electrodeposition solution system is stable, the operation is convenient, and there is no air pollution. The molybdenum content in the electrodeposition layer reaches 24.1%, which can meet the needs of industrial production.

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Abstract

The invention belongs to the technical field of hydrogen evolution material preparation, and particularly relates to an electro-deposition method for preparing a foamed nickel-molybdenum alloy hydrogen evolution material. The electro-deposition method comprises the following steps that (1) nickel sulfate, sodium molybdate or potassium molybdate, sodium citrate, sodium chloride or potassium chloride or nickel chloride are sequentially dissolved into deionized water to obtain a solution; (2) ethanolamine is dissolved into the solution obtained in the step (1), and the pH value of the solution is adjusted to 8.5-9.5; (3) 2-Butyne-1,4-diol and saccharin are added into the solution obtained in the step (2) so that an electro-deposition solution can be obtained; (4) electro-deposition is conducted in the single-cathode three-anode mode, wherein foamed nickel serves as the cathode, and nickel, molybdenum and titanium or nickel, molybdenum and carbon serve as the anodes; and (5) the obtained solution is heated to 50-60 DEG C, and electro-deposition is conducted with the apparent cathode current density being 125-155 mA / cm<2>. The method has the beneficial effects that ammonium hydroxide free operation can be conducted, an electro-deposition layer is good in quality, the pH value of the electro-deposition solution is stable, operation is convenient, and the content of molybdenum in nickel-molybdenum alloy reaches up to 25%.

Description

technical field [0001] The present disclosure belongs to the technical field of preparation of hydrogen evolution materials, and in particular relates to an electrodeposition method for preparing foamed nickel-molybdenum alloy hydrogen evolution materials. Background technique [0002] In the electrolysis of alkaline water and salt water, the catalytic activity of the hydrogen evolution cathode has a great influence on the cell voltage. The hydrogen evolution activity of the cathode is poor, and the overpotential is high, resulting in high cell voltage and large power consumption. The noble metals platinum and palladium have good hydrogen evolution activity and low hydrogen evolution overpotential, but they are expensive and difficult to apply in industrial production. Therefore, it is necessary to research and develop highly active hydrogen evolution electrode materials with excellent catalytic performance and relatively low price. [0003] The main factors affecting the ...

Claims

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Application Information

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IPC IPC(8): C25D3/56C25B1/04C25B11/03C25B11/04
CPCC25B1/04C25B11/04C25D3/562C25B11/031Y02E60/36
Inventor 胡石林李国希阮皓张标朱日龙黄登高吴栋
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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