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Preparation method of foam electrode for water electrolysis

A water electrolysis and electrode technology, which is applied in the field of water electrolysis to achieve the effects of reducing precipitation overpotential, reducing energy consumption and improving production efficiency

Inactive Publication Date: 2011-06-22
GRIPM ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on the use of foam electrode materials in the electrolysis of water for hydrogen production.

Method used

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  • Preparation method of foam electrode for water electrolysis

Examples

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Embodiment 1

[0024] A preparation method of a foam electrode for water electrolysis, the method steps are as follows,

[0025] (1) Choose a thickness of 2mm and a surface density of 400±10g / m 2 , the number of holes is 100-110PPI, and the nickel foam with a diameter of 150mm is used as the base material of the electrode material;

[0026] (2) Degreasing the surface of foamed nickel, put the foamed nickel into an oil tank with an ultrasonic generator, add acetone to completely soak the foamed nickel in it, turn on the power, take it out after ultrasonic cleaning for 5 minutes, and wait for the acetone to volatilize to obtain a clean surface. nickel foam;

[0027] (3) at room temperature, the foamed nickel and the conductive copper wire are clamped together with a clamp, and the foamed nickel is soaked in 10% sulfuric acid solution for 8 minutes to carry out surface activation treatment to the foamed nickel;

[0028] (4) Rinse the foamed nickel after activation with pure water, quickly imm...

Embodiment 2

[0034] A preparation method of a foam electrode for water electrolysis, the method steps are as follows,

[0035] (1) Choose a thickness of 2mm and a surface density of 500±10g / m 2 , the number of holes is 70-80PPI, and the nickel foam with a diameter of 150mm is used as the base material of the electrode material;

[0036] (2) The surface of the foamed nickel is degreased, and the alkali boiling method is adopted. The lye formula is as follows: NaOH is 50g / L, NaOH is 50g / L, Na 2 CO 3 30g / L, Na 3 PO 4 20g / L, heat the lye to 80°C, and treat for 30 minutes to remove the oil and clean the surface of the nickel foam;

[0037] (3) At room temperature, the nickel foam and the conductive copper wire are clamped together with a clamp, and the nickel foam is soaked in a mixed solution of hydrochloric acid and sulfuric acid with a concentration of 10% sulfuric acid and a molar ratio of hydrochloric acid of 10:1 for 10 minutes. Nickel foam is used for surface activation treatment, a...

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Abstract

The invention discloses a preparation method of a foam electrode for water electrolysis, which belongs to the technical field of water electrolysis. Foam nickel is selected as the base material of the electrode material; oil stains on the surface of the foam nickel are removed so that the surface is clean; the foam nickel is soaked in diluted acid solution, and the surface of the foam nickel is activated; pure water is used to flush the activated foam nickel, and the foam nickel is quickly soaked into an electrodeposition tank as a cathode for electrodeposition; the active surface is prepared; the foam electrode with the active surface is thoroughly cleaned, dried and thermally treated; and the thermally treated foam material is cut to prepare the electrode material. The high-activity foam electrode material prepared through the method provided by the invention can be used for the electrode material in the electrolysis hydrogen production industry, can reduce hydrogen precipitation overpotential in the electrolysis process, reduce energy consumption, and improve the production efficiency.

Description

technical field [0001] The invention belongs to the technical field of water electrolysis, in particular to a method for preparing a foam electrode for water electrolysis. Background technique [0002] Hydrogen is a very important industrial gas species, which is widely used in chemical industry, energy, electronics, metallurgy, food, machinery, aerospace, nuclear industry and many other fields. For example, in chemical industries such as synthetic ammonia and methanol, the supply and production costs of hydrogen directly determine the production costs of these basic materials and affect the development of the entire industry. Hydrogen, as a clean energy, has attracted more and more attention, and its demand is gradually increasing. [0003] Hydrogen production by electrolysis of water is one of the important methods for producing hydrogen. The process principle is to use two electrodes that do not react chemically, and when a direct current is conducted with an aqueous sol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/03C25B1/04
CPCY02E60/366Y02E60/36
Inventor 闫世凯张景怀杨中元汪礼敏刘景辉付东兴刘宇辉戴赫徐景杰董小江张羽
Owner GRIPM ADVANCED MATERIALS CO LTD
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