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Method for preparing cnts-porous nickel/nickel oxide catalyst for hydrogen evolution reaction on steel surface

A technology of steel surface and hydrogen evolution reaction, which is applied in the direction of electrode shape/type, coating, electrolytic components, etc., can solve the problems of high hydrogen evolution activation energy and low energy conversion efficiency, so as to improve catalytic activity, reduce energy consumption, and reduce hydrogen evolution The effect of the activation energy of the reaction

Inactive Publication Date: 2018-10-02
UNIV OF JINAN
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Problems solved by technology

[0005] The present invention aims to solve the problems of high hydrogen evolution activation energy and low energy conversion efficiency of non-precious metal hydrogen evolution reaction catalysts currently used for electrolysis of hydrogen in alkaline solutions, and provides a method for electrolysis of hydrogen in alkaline solutions prepared on the surface of steel. Method of CNTs-Porous Nickel / Nickel Oxide Hydrogen Evolution Reaction Catalyst

Method used

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  • Method for preparing cnts-porous nickel/nickel oxide catalyst for hydrogen evolution reaction on steel surface
  • Method for preparing cnts-porous nickel/nickel oxide catalyst for hydrogen evolution reaction on steel surface

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specific Embodiment approach 1

[0016] Specific embodiment one: the method for preparing CNTs-porous nickel / nickel oxide hydrogen evolution reaction catalyst on the steel surface of the present embodiment is carried out according to the following steps:

[0017] (1) Preparation of nickel-copper alloy-CNTs composite electroplating solution: a. Weigh 0.1–2.0 g of cetyltrimethylammonium bromide, add it to 800 mL of deionized water, stir at room temperature for 20 min, Add 0.2-1.0 g of carbon nanotubes; b. Stir at 25 °C for 0.5 h and then use an ultrasonic cell pulverizer for 1.5 h; c. Repeat step b 1-5 times; d. According to the concentration of ammonium citrate at 35- 65 g / L, the concentration of potassium sodium tartrate is 5~30 g / L, the concentration of nickel sulfate is 8~50 g / L, and the concentration of copper sulfate is 2~25 g / L. Ammonium citrate, potassium tartrate Sodium, nickel sulfate and copper sulfate are sequentially added to the solution treated in step c, and the pH is adjusted to be 7.5 to 8.5 t...

specific Embodiment approach 2

[0024] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the concentration of nickel sulfate described in step (1) d is 12 ~ 40 g / L, and the concentration of described copper sulfate is 3 ~ 20 g / L. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0025] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the electrodeposition time in step (4) is 20 min to 2 h. Others are the same as in the first or second embodiment.

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Abstract

A method for preparing CNTs-porous nickel / nickel oxide hydrogen evolution reaction catalyst on the surface of iron and steel, the invention relates to a preparation method used as a catalyst for electrolysis hydrogen evolution reaction in alkaline solution. The invention aims to solve the problem of poor performance of non-noble metal hydrogen evolution reaction catalysts in alkaline solution at present. The method for preparing CNTs-porous nickel / nickel oxide hydrogen evolution reaction catalyst on steel surface: (1) preparation of nickel-copper alloy-CNTs composite electroplating solution; (2) preparation of copper leaching solution; (3) steel pretreatment; (4) in Prepare CNTs-nickel-copper alloy on steel surface; (5) prepare CNTs-porous nickel on steel surface; (6) prepare CNTs-porous nickel / nickel oxide on steel surface, and prepare CNTs with good hydrogen evolution reaction catalytic activity on steel surface The porous nickel / nickel oxide composite catalytic layer is beneficial to the improvement of the performance of the non-precious metal catalyst for the electrolysis hydrogen reaction.

Description

technical field [0001] The invention belongs to the field of preparation of hydrogen evolution reaction catalysts, and relates to a method for preparing a CNTs-porous nickel / nickel oxide hydrogen evolution reaction catalyst for electrolysis of hydrogen in an alkaline solution on the surface of steel. Background technique [0002] The production of high-purity hydrogen by electrolysis of water is an important means of industrial hydrogen production. Among them, the research on hydrogen production by electrolysis in alkaline solution is more mature and its application is more extensive. The principle of electrolytic hydrogen production in alkaline solution is to use sodium hydroxide as a conductive salt. The water molecules in the alkaline solution are reduced at the cathode to generate hydrogen atoms and hydroxide ions, and the hydroxide ions are oxidized at the anode to generate water molecules and oxygen. Atoms, the hydrogen atoms generated by the reduction at the cathode w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D15/00C25B11/03C25B11/06C25B1/04
CPCC25B1/04C25D15/00C25B11/031C25B11/051C25B11/091Y02E60/36
Inventor 田栋刘赛赛郑瑶瑶黄太仲夏方诠周长利
Owner UNIV OF JINAN
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