A three-dimensional porous fe@fe(oh) 3 Preparation method of oxygen evolution anode

A three-dimensional porous, anode technology, applied in the direction of electrodes, electrolytic components, electrolytic process, etc., can solve the problem of high price, achieve the effect of reducing precipitation overpotential, reducing oxygen evolution overpotential and total energy consumption, and improving catalytic activity

Inactive Publication Date: 2021-07-13
UNIV OF JINAN
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Problems solved by technology

[0004] The present invention aims to solve the problem of high price caused by the use of precious metals in the current catalysts used for electrolysis of oxygen in alkaline solutions, and provides a three-dimensional porous Fe@Fe(OH) prepared on the surface of foamed nickel for electrolysis of oxygen in alkaline solutions 3 layer method

Method used

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  • A three-dimensional porous fe@fe(oh) <sub>3</sub> Preparation method of oxygen evolution anode
  • A three-dimensional porous fe@fe(oh) <sub>3</sub> Preparation method of oxygen evolution anode

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specific Embodiment approach 1

[0015] Specific embodiment one: a three-dimensional porous Fe@Fe(OH) of this embodiment 3 The preparation method of the oxygen-evolving anode is carried out according to the following steps:

[0016] (1) Broken Haematococcus: a. Freeze-dry the Haematococcus at -170 ℃ for 24~36 hours, take it out and thaw naturally; b. Repeat step a0~5 times to obtain the broken Haematococcus ;

[0017] (2) Preparation of composite electroplating solution: c. Weigh 0.5-8.0 g of Haematococcus treated in step (1), add it to 800 mL of deionized water, and stir ultrasonically at room temperature for 10-60 minutes to obtain solution A ; d. According to the concentration of malic acid is 5~25 g / L, the concentration of lactic acid is 5~35 mL / L, the concentration of hydrochloric acid is 1~25 mL / L, the concentration of ferrous chloride is 6~35g / L , the concentration of thiourea is 8~30 g / L, the concentration of cuprous chloride is 1~10 g / L, the concentration of potassium chloride is 30~100 g / L, malic ...

specific Embodiment approach 2

[0023] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the current density adopted in e of step (3) is 0.8 ~ 6.0 A / dm 2 . Others are the same as in the first embodiment.

specific Embodiment approach 3

[0024] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the current density used in step (5) g is 0.2 ~ 2.5 A / dm 2 . Others are the same as in the first or second embodiment.

[0025] Verify beneficial effect of the present invention with following test:

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Abstract

A three-dimensional porous Fe@Fe(OH) 3 The preparation method of the oxygen analysis anode, the invention relates to a three-dimensional porous Fe@Fe(OH) for the electrolysis of oxygen in alkaline solution 3 Anode preparation method. The invention aims to solve the problem of high price caused by the use of precious metals in the current catalysts used for electrolysis of oxygen in alkaline solutions. A three-dimensional porous Fe@Fe(OH) 3 The preparation method of the oxygen-evolving anode: (1) breaking the wall of Haematococcus; (2) preparation of composite electroplating solution; (3) preparing composite film on the surface of foamed nickel; (4) heat treatment of composite film; (5) electrolytic stripping of copper ; (6) Hydrothermal treatment to prepare three-dimensional porous Fe@Fe(OH) with good catalytic activity for oxygen evolution reaction on the surface of nickel foam 3 The thin film greatly reduces the oxygen evolution overpotential in the electrolysis of water in alkaline solution.

Description

technical field [0001] The invention belongs to the field of preparation of oxygen-analysis anodes, and relates to a three-dimensional porous Fe@Fe(OH) for electrolysis of oxygen in alkaline solution 3 Anode preparation method. Background technique [0002] With the development of industry, fossil energy sources such as coal, oil and natural gas are consumed at a high speed. With the current situation, the depletion of fossil energy sources will occur one day. By then, most of the energy currently used by humans will also be exhausted. Taking precautions to explore renewable energy to replace fossil fuels such as gasoline and diesel can calmly cope with the depletion of fossil energy in the future. Of all the new renewable energy sources, hydrogen is considered the most desirable. Hydrogen can be continuously produced by using solar energy. The principle is to rely on the photoelectrons generated by solar cells to reduce water in the solution at the cathode to obtain hydr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/031C25B11/091C25B1/04
CPCC25B1/04C25B11/031C25B11/051C25B11/057C25B11/091Y02E60/36
Inventor 田栋夏方诠周长利刘汉彪衣姜乐刘建辉
Owner UNIV OF JINAN
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