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Nickel-based electrolysis hydrogen evolution porous cathode material and preparation method thereof

A cathode material, electrolysis technology, applied in electrodes, electrolysis process, electrolysis components, etc., can solve the problems of high electrocatalytic activity, poor corrosion resistance, unstable hydrogen evolution, etc., and achieve high electrocatalytic activity and good mechanical properties. , the effect of reducing the hydrogen evolution overpotential

Inactive Publication Date: 2019-01-29
XIANGTAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention prepares a porous nickel-based electrolytic hydrogen cathode material with good performance, which has abundant and evenly distributed pores, large specific surface area, and high electrocatalytic activity, which can well solve the catalytic efficiency existing in modern electrolytic water hydrogen production technology Low, poor corrosion resistance, unstable hydrogen evolution and high production costs

Method used

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  • Nickel-based electrolysis hydrogen evolution porous cathode material and preparation method thereof
  • Nickel-based electrolysis hydrogen evolution porous cathode material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Weigh the four high-purity powders of Ni, Fe, Mo, and Mn by mass percentage, among which the content of Fe with a particle size of 3 µm is 10 wt %; the content of Mo with a particle size of 3 µm is 10 wt %; Mn with a diameter of 5 µm, its content is 12wt%; the balance is Ni with a powder particle size of 4 µm. Mix the prepared powder on a V-type powder mixer at a constant speed for 8 hours, then add 1% stearic acid of the total powder mass, dry it in an ordinary drying oven at 40°C for 8 hours, and cold press it under a cold press at a pressure of 150 MPa. , the pressure holding time is about 80s; the pressed sample is placed in a vacuum furnace, and the vacuum degree is 1x10 -2 In the case of Pa, raise the temperature from room temperature to 110°C at a heating rate of 5°C / min, and hold for 35 minutes; then raise the temperature to 290°C at a heating rate of 5°C / min, and hold for 70 minutes; then raise the temperature at a heating rate of 8°C / min to 370°C and keep at ...

Embodiment 2

[0027] Weigh four high-purity powders of Ni, Fe, Mo, and Mn by mass percentage, among which Fe with a particle size of 3 µm has a content of 12 wt%; Mo with a particle size of 5 µm has a content of 12 wt%; Mn with a diameter of 4µm, its content is 8wt%; the balance is Ni with a powder particle size of 4µm. Mix the prepared powder on a V-type powder mixer at a constant speed for 8 hours, then add 1% stearic acid of the total powder mass, dry it in an ordinary drying oven at 35°C for 8 hours, and cold press it at a pressure of 120 MPa under a cold press. , the pressure holding time is about 80s; the pressed sample is placed in a vacuum furnace, and the vacuum degree is 1x10 -3In the case of Pa, raise the temperature from room temperature to 100°C at a heating rate of 8°C / min, and hold for 30 minutes; then raise the temperature to 280°C at a heating rate of 3°C / min, and hold for 60 minutes; then raise the temperature at a heating rate of 5°C / min to 360°C and keep at this tempera...

Embodiment 3

[0029] Weigh four high-purity powders of Ni, Fe, Mo, and Mn by mass percentage, among which Fe with a particle size of 5 µm has a content of 15 wt %; Mo with a particle size of 4 µm has a content of 15 wt %; Mn with a diameter of 3 µm, its content is 5wt%; the balance is Ni with a powder particle size of 5 µm. Put the prepared powder on a V-type powder mixer and mix it at a constant speed for 6 hours, then add 1% stearic acid of the total powder mass, dry it in a common drying oven at 35°C for 10 hours, and cold press it at a pressure of 140 MPa under a cold press. , the holding time is about 70s; the pressed sample is placed in a vacuum furnace, and the vacuum degree is 1x10 -3 In the case of Pa, raise the temperature from room temperature to 120°C at a rate of 10°C / min and keep it for 40 minutes; then raise the temperature to 285°C at a rate of 8°C / min and keep it for 80 minutes; then raise the temperature at a rate of 10°C / min to 380°C and keep at this temperature for 55mi...

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Abstract

The invention discloses a nickel-based electrolysis hydrogen evolution porous cathode material and a preparation method thereof. The preparation method comprises the following steps that high-purity Ni powder, high-purity Fe powder, high-purity Mo powder and high-purity Mn powder are mixed uniformly, the mixture comprises, by mass, 10-15% of Fe, 10-15% of Mo, 5-15% of Mn and the balance Ni, and after the mixture is added with glue, dried and then pressed and formed into blanks, based on the principle of a solid-phase deviation diffusion, a vacuum sintering reaction is carried out on the blanksto synthesize a Ni-Fe-Mo-Mn porous material. According to the nickel-based electrolysis hydrogen evolution porous cathode material and the preparation method thereof, the nickel-based porous materialprepared is rich and uniform in pores, and has the advantages of being large in specific surface area, low in hydrogen evolution over potential, good in catalytic performance, excellent in corrosionresistance, stable in working performance, simple in the preparation process, environment-friendly and the like, the preparation cost of the material is low, the process is simple and easy to realize,and the porous material prepared through the method can be used as the electrolysis hydrogen evolution cathode material.

Description

technical field [0001] The invention is a method for preparing a porous material by using an element powder reaction synthesis method, in particular to a method for preparing a Ni-Fe-Mo-Mn electrolysis hydrogen porous cathode material, which belongs to the field of alloy material preparation. Background technique [0002] The current climate and environmental issues facing the world are closely related to energy, which plagues the development of countries all over the world. In the face of tense energy issues, the development of sustainable energy has become a hot spot. Hydrogen energy is an efficient, clean, and ideal energy source, with many outstanding advantages such as high combustion value, abundant resources, and renewable energy, so it has been widely valued by countries all over the world. There are many ways to produce hydrogen, such as hydrogen production by electrolysis of water, biological hydrogen production, hydrogen production by photocatalysis, and hydrogen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/03C22C1/08B22F3/11C25B11/06C25B11/03
CPCB22F3/11C22C19/03C25B1/04C25B11/031C25B11/061Y02E60/36
Inventor 肖逸锋刘文吴靓许艳飞钱锦文张乾坤段震杨格贾友禄叶明强曾毅夫
Owner XIANGTAN UNIV
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