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A kind of nickel hydroxide/nickel mesh composite hydrogen and oxygen evolution electrode, preparation method and application thereof

A nickel hydroxide and oxygen evolution electrode technology, which is applied in the direction of electrodes, electrolysis components, electrolysis process, etc., can solve the problems of difficult to achieve large-scale application, scarce catalyst reserves, high price, etc., and achieve abundant reserves, convenient industrial production, and low price cheap effect

Active Publication Date: 2021-08-31
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The research on catalysts for hydrogen production by electrolysis of water was initially based on noble metals such as platinum, iridium and ruthenium, but such catalysts are scarce and expensive, making it difficult to achieve large-scale application
At present, the electrode widely used in the industrial electrolysis of water to produce hydrogen is Raney nickel / nickel mesh electrode, which is cheap, but there is still a lot of room for improvement in its water splitting performance.

Method used

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  • A kind of nickel hydroxide/nickel mesh composite hydrogen and oxygen evolution electrode, preparation method and application thereof
  • A kind of nickel hydroxide/nickel mesh composite hydrogen and oxygen evolution electrode, preparation method and application thereof
  • A kind of nickel hydroxide/nickel mesh composite hydrogen and oxygen evolution electrode, preparation method and application thereof

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Embodiment 1

[0035] The preparation method of the nickel hydroxide / nickel mesh composite hydrogen and oxygen evolution electrode of the present invention comprises the following steps:

[0036] a. Pretreatment of conductive substrate

[0037] Select a cut nickel mesh of 1×1 square centimeter and immerse it in ethanol solvent for ultrasonic treatment for 20 minutes, then use 20% concentration of hydrochloric acid solution for ultrasonic treatment for 10 minutes to chemically remove oil and surface oxides; finally use deionized water Rinse off the nickel base.

[0038] b. Growth of porous nickel structure on nickel mesh

[0039] Dissolve NaCl in deionized water to obtain an aqueous NaCl solution with a concentration of 0.5 mol / liter; stir for 13 minutes; put the nickel mesh into the obtained solution, and then put it into a water bath, the reaction temperature is 90 degrees Celsius, and the reaction time is 8 hours. After the reaction is finished, the product is washed and dried to obtain ...

Embodiment 2

[0041] The preparation method of the iron-cobalt alloy particle / nickel hydroxide / nickel mesh composite hydrogen and oxygen evolution electrode of the present invention comprises the following steps:

[0042] c. Pretreatment of conductive substrates

[0043] Select a cut nickel mesh of 1×1 square centimeter and immerse it in ethanol solvent for ultrasonic treatment for 20 minutes, then use 20% concentration of hydrochloric acid solution for ultrasonic treatment for 10 minutes to chemically remove oil and surface oxides; finally use deionized water Rinse off the nickel base.

[0044] d. Growth of porous nickel structure on nickel mesh

[0045]Dissolve NaCl in deionized water to obtain an aqueous NaCl solution with a concentration of 0.5 mol / liter; stir for 13 minutes; put the nickel mesh into the obtained solution, and then put it into a water bath, the reaction temperature is 90 degrees Celsius, and the reaction time is 8 hours. After the reaction is finished, the product is ...

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Abstract

The invention discloses a nickel hydroxide / nickel mesh composite hydrogen and oxygen evolution electrode, a preparation method and its application, and belongs to the field of electrocatalytic water decomposition catalysts. The composite hydrogen and oxygen evolution electrode includes hydrogen grown uniformly in situ on a nickel mesh substrate Nickel oxide porous nanosheets, or, the nickel hydroxide nanosheets are evenly covered with iron-cobalt alloy nanoparticles to form iron-cobalt alloy particles / nickel hydroxide / nickel mesh composite electrodes. It has an initial overpotential of 1.471 volts in 3 mol / L NaOH electrolyte at 80 degrees Celsius, which is better than the Raney nickel / nickel mesh electrode widely used in industrial electrolysis of water to produce hydrogen. The stability of the composite hydrogen and oxygen evolution electrode is also significantly better than that of the industrial Raney nickel / nickel mesh electrode. At the same time, the preparation process is simple, the cost is low, and it is easy to realize industrial mass production. train of thought.

Description

technical field [0001] The invention relates to the field of electrocatalytic water splitting catalysts, in particular to a nickel hydroxide / nickel mesh composite hydrogen and oxygen evolution electrode, a preparation method and an application thereof. Background technique [0002] Nowadays, with the excessive use of fossil energy, the problem of environmental degradation is increasing and the reserves of fossil fuels are decreasing. Therefore, the development and utilization of new and renewable energy such as nuclear energy, wind energy, solar energy, and hydrogen energy have received great attention from all over the world. Among them, hydrogen energy has been widely valued by scientists all over the world because of its good combustion performance, low consumption, non-toxicity, and no pollution. Among hydrogen production technologies, hydrogen production by electrolysis of water has become one of the fastest-growing and most mature means of large-scale hydrogen producti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/091C25B11/031C25B1/04
CPCC25B1/04Y02E60/36
Inventor 沈明荣范荣磊陆垚徐子豪
Owner SUZHOU UNIV