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Preparation method of ferronickel catalyst for hydrogen production through water electrolysis

A technology for catalyst and water electrolysis, applied in the electrolysis process, electrolysis components, electrodes, etc., can solve the problems of unfavorable large-scale production, easy detachment of catalyst, long reaction time, etc., and achieve good catalytic performance and stability, uniform morphology and size , the effect of shortened response time

Pending Publication Date: 2022-04-08
QINGDAO CHUANGQI XINNENG CATALYSIS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst has excellent oxygen evolution performance, but the preparation method needs to be heated in the reactor for a long time at high temperature, and then reacted in an oven at 110°C for 12 hours, etc., and finally let it cool down to room temperature, which requires high energy consumption, long reaction time, and complicated steps. , and the synthesized catalyst is easy to fall off and has poor stability, which is not conducive to large-scale production

Method used

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  • Preparation method of ferronickel catalyst for hydrogen production through water electrolysis
  • Preparation method of ferronickel catalyst for hydrogen production through water electrolysis
  • Preparation method of ferronickel catalyst for hydrogen production through water electrolysis

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Embodiment 1

[0033] First, pre-treat the nickel mesh, cut the nickel mesh into nickel sheets with a size of 5cm×5cm, wash and degrease with 1M sulfuric acid, and sonicate for 15 minutes; then ultrasonicate the acid-treated nickel mesh with ethanol and ultrapure water for 15 minutes, and finally Vacuum dry at 70°C for 25min. Secondly, add nickel sulfate hexahydrate and ferrous sulfate heptahydrate into water and dissolve to obtain a solution, the concentration of nickel sulfate in the solution is 0.75 moles per liter, the concentration of ferrous sulfate is 0.15 moles per liter, and the total volume of the solution is 200 mL . Add 4g of sodium chloride, 9g of boric acid, 6g of sodium citrate, 0.08g of benzene sulfinic acid agent, 0.06g of sodium lauryl sulfate, and 1g of saccharin into the above-mentioned dissolving solution in turn, and make it dissolve, and mix well to obtain Dark green transparent mixed solution. Then, use a pH meter (with stirring) to adjust the pH of the above soluti...

Embodiment 2

[0035] First, pre-treat the nickel mesh, cut the nickel mesh into nickel sheets with a size of 5cm×5cm, wash and degrease with 1M sulfuric acid, and sonicate for 15 minutes; then ultrasonicate the acid-treated nickel mesh with ethanol and ultrapure water for 15 minutes, and finally Vacuum dry at 70°C for 25min. Next, add nickel sulfate hexahydrate and ferrous sulfate heptahydrate into water for dissolution to obtain a solution, the concentration of nickel sulfate in the solution is 0.8 moles per liter, the concentration of ferrous sulfate is 0.15 moles per liter, and the total volume of the solution is 200 mL . Add 4g of sodium chloride, 9g of boric acid, 6g of sodium citrate, 0.08g of benzenesulfinic acid agent, 0.06g of sodium lauryl sulfate, and 1g of saccharin into the above-mentioned dissolving solution, dissolve them, and mix them uniformly to obtain ink. Green transparent solution. Then, use a pH meter (with stirring) to adjust the pH of the above solution to 3, and t...

Embodiment 3

[0037]First, pre-treat the nickel mesh, cut the nickel mesh into nickel sheets with a size of 5cm×5cm, wash and degrease with 1M sulfuric acid, and sonicate for 15 minutes; then ultrasonicate the acid-treated nickel mesh with ethanol and ultrapure water for 15 minutes, and finally Vacuum dry at 70°C for 25min. Secondly, add nickel sulfate hexahydrate and ferrous sulfate heptahydrate into water and dissolve to obtain a solution, the concentration of nickel sulfate in the solution is 0.75 moles per liter, the concentration of ferrous sulfate is 0.1 moles per liter, and the total volume of the solution is 200 mL . Then add 3g of sodium chloride, 10g of boric acid, 5g of sodium citrate, 0.06g of benzene sulfinic acid agent, 0.08g of sodium lauryl sulfate, and 1g of saccharin into the above-mentioned dissolving solution, and make it dissolve, and mix well to obtain Dark green transparent mixed solution. Then, use a pH meter (with stirring) to adjust the pH of the above solution t...

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Abstract

The invention discloses a preparation method of a ferronickel catalyst for hydrogen production by electrolysis of water, which comprises the following steps: (1) adding nickel sulfate hexahydrate and ferrous sulfate heptahydrate into water for dissolving to obtain a dissolved solution; (2) selecting sodium chloride, boric acid, sodium citrate, a benzenesulfinic acid agent, lauryl sodium sulfate and saccharin as regulator raw materials, sequentially adding the regulator raw materials into the dissolved solution, and uniformly mixing to obtain a dark green transparent mixed solution; (3) adjusting the pH value of the mixed solution to 3-3.5 to obtain an electroplating solution; (4) transferring the electroplating solution into an electroplating bath, and raising the temperature to 45-55 DEG C; and (5) selecting a nickel net as a carrier, using an electrochemical workstation, and carrying out electrodeposition by adopting a chronoamperometry to obtain the nickel-iron alloy catalyst. According to the invention, the electrodeposition conditions are controlled, and the composition and morphology structure of the plating layer are regulated and controlled by changing the composition of the plating solution, so that the electrocatalytic performance of the nickel-iron catalyst is accurately controlled, and the catalyst has good catalytic performance and stable performance.

Description

technical field [0001] The invention relates to the field of catalysts for hydrogen production by electrolysis of water, in particular to a preparation method of a nickel-iron alloy oxygen evolution catalyst used for hydrogen production by electrolysis of water. Background technique [0002] Hydrogen has the advantages of cleanliness and high energy density. It is the most potential energy carrier in the future and will play an important role in solving the energy crisis and global warming. Hydrogen production by electrolysis of water can use renewable energy such as solar energy and wind energy, and is generally considered to be a path for large-scale sustainable hydrogen production in the future. However, the process of water electrolysis involves two half-reactions of hydrogen production and oxygen production, and an overpotential will be generated during the reaction, and the overpotential of the oxygen evolution reaction accounts for the main part. Therefore, it is of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/04C25B11/089C25D5/24C25D21/12C25D3/56
CPCY02E60/36Y02P20/133
Inventor 赵宏
Owner QINGDAO CHUANGQI XINNENG CATALYSIS TECH CO LTD
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