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Porous nickel-based cathode material for hydrogen evolution reaction and preparation method thereof

A cathode material and electrolysis technology, applied in the direction of electrodes, electrolysis process, electrolysis components, etc., can solve the problems of poor corrosion resistance, high electrocatalytic activity, and low catalytic efficiency, and achieve excellent corrosion resistance and electrocatalytic activity. The effect of large and low sintering temperature

Inactive Publication Date: 2017-09-22
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides an effective cathode catalytic material for the electrolysis hydrogen technology, which has rich and evenly distributed pores, a large specific surface area, and high electrocatalytic activity, and finally solves the low catalytic efficiency and poor corrosion resistance of the water hydrogen production technology. , hydrogen evolution instability and high production cost

Method used

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  • Porous nickel-based cathode material for hydrogen evolution reaction and preparation method thereof
  • Porous nickel-based cathode material for hydrogen evolution reaction and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] The 2μm Ni, Mo, Fe, W four element powders with a purity of more than 99.5% are prepared according to a certain mass percentage, of which Mo is 12%; Fe is 5%; W is 1%; the balance is iron powder. Put the prepared powder on a V-type powder mixer and mix it at a constant speed for 8 hours, add 1% stearic acid of the total powder mass, dry it in a common drying oven at 60°C for 5 hours, and then cold press it under a cold press at a pressure of 50 MPa Forming, the holding time is about 120s; the pressed sample is placed in a vacuum furnace, and the vacuum degree is 1×10 -2 In the case of Pa, keep a heating rate of 5°C / min, from room temperature to 280°C, and hold for 80 minutes; then raise the temperature to 480°C at a heating rate of 5°C / min, and hold for 60 minutes; then raise the temperature at a heating rate of 1°C / min to 590°C and keep at this temperature for 60min; then raise the temperature to 850°C at a heating rate of 5°C / min and keep at this temperature for 120mi...

Embodiment 2

[0035] The 5µm Ni, Mo, Fe, W four element powders with a purity of more than 99.5% are prepared according to a certain mass percentage, of which Mo is 25%; Fe is 15%; W is 10%; the balance is iron powder. Put the prepared powder on a V-type powder mixer and mix it at a constant speed for 14 hours, then add stearic acid with a total mass of 1.8% of the powder, dry it in an ordinary drying oven at 40°C for 10 hours, and then cold press it under a cold press at a pressure of 100 MPa Forming, the pressure holding time is about 90s; the pressed sample is placed in a vacuum furnace, and the vacuum degree is 1×10 -2 In the case of Pa, keep a heating rate of 6°C / min, from room temperature to 320°C, and hold for 70 minutes; then raise the temperature to 520°C at a heating rate of 10°C / min, and hold for 40 minutes; then raise the temperature at a heating rate of 5°C / min to 620°C and keep at this temperature for 60min; then raise the temperature to 950°C at a heating rate of 10°C / min and...

Embodiment 3

[0037] The 8µm Ni, Mo, Fe, W four element powders with a purity of more than 99.5% are prepared according to a certain mass percentage, of which Mo is 20%; Fe is 10%; W is 10%; the balance is iron powder. Put the prepared powder on a V-type powder mixer and mix it at a constant speed for 14 hours, then add 1.5% stearic acid of the total mass of the powder, dry it in an ordinary drying oven at 40°C for 7 hours, and then cold press it under a cold press at a pressure of 150 MPa Forming, the holding time is about 30s; the pressed sample is placed in a vacuum furnace, and the vacuum degree is 1.8×10 -3 In the case of Pa, keep the temperature rise rate of 3°C / min from room temperature to 360°C, and keep it for 60 minutes; then raise the temperature to 500°C at a rate of 7°C / min, and keep it for 50 minutes; then raise the temperature at a rate of 3°C / min to 600°C and keep at this temperature for 80min; then raise the temperature to 900°C at a heating rate of 8°C / min and keep at this...

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Abstract

The invention provides a porous nickel-based cathode material for a hydrogen evolution reaction and a preparation method of the porous nickel-based cathode material for the hydrogen evolution reaction. Ni, Mo, Fe and W are evenly mixed and dried, and a green body is obtained after compression forming, wherein the purities of the Ni, the Mo, the Fe and the W are 99.5% or over, and the mixture of the Ni, the Mo, the Fe and the W comprises, by mass, 12%-25% of Mo, 5%-15% of Fe, 1%-10% of W and the balance Ni; and a vacuum sintering reaction is conducted on the green body through the solid phase partial diffusion principle, and then the Ni-Mo-Fe-W porous material is synthesized. The prepared novel porous nickel-based cathode material for the hydrogen evolution reaction is abundant and uniform in pore and has the advantages of being large in specific surface area, low in hydrogen evolution overpotential, good in catalytic performance, excellent in corrosion resistance, stable in work performance, simple and environment-friendly in preparation technology and the like; and besides, the preparation cost is low, and the preparation technology is simple and easy to implement.

Description

technical field [0001] The invention relates to a preparation method of a porous material, in particular to a preparation method of a Ni-Mo-Fe-W electrolysis hydrogen porous nickel-based cathode material, belonging to the technical field of inorganic porous materials. Background technique [0002] Hydrogen energy is an efficient, clean, and ideal secondary "energy-containing energy source". It has many outstanding advantages such as large 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, among which the electrolysis of water using renewable energy is one of the most promising and clean methods. Hydrogen production by water electrolysis has been widely used due to its advantages of simple operation, no pollution, recyclability, and high product purity. It is one of the important means to realize large-scale industrial hydrogen production. Hydrogen production by wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/03C25B11/06C25B1/04C22C19/03B22F3/11
CPCB22F3/1121C22C19/03C25B1/04C25B11/04C25B11/031Y02E60/36
Inventor 吴靓郭小花肖逸锋许艳飞钱锦文徐阳李晓娜曾灿
Owner XIANGTAN UNIV
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