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A kind of ni-cu-ti/cnts porous composite material and preparation method thereof

A porous composite material, ni-cu-ti technology, applied in electrode coatings, energy input, electrolysis components, etc., can solve the problems of easy loss of hydrogen evolution activity, power-off gap, etc., to achieve rich porosity, extended service life, mechanical Excellent performance and corrosion resistance

Active Publication Date: 2022-07-05
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the biggest disadvantage of this electrode is the power-off gap during the hydrogen evolution process, especially after a long period of power-off, the hydrogen evolution activity is easily lost with the oxidation and dissolution of the active components.

Method used

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  • A kind of ni-cu-ti/cnts porous composite material and preparation method thereof
  • A kind of ni-cu-ti/cnts porous composite material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0025] Three high-purity powders of Ni, Cu, Ti, and CNTs were weighed according to a certain mass ratio. The Ni powder content was 55%wt, and the powder particle size was 5μm; the Cu powder content was 35%wt, and the powder particle size was 5μm; Ti The powder content is 10%wt, the powder particle size is 5μm, and the CNTs content is 0.3%wt. It is a multi-walled carbon nanotube with a length of 1μm. The weighed CNTs were added to deionized water at a ratio of 0.1 g / L, and 68% of sodium dodecylbenzenesulfonate, 150% of Tween-20, and 150% of polystyrene were added relative to the mass of CNTs. Vinylpyrrolidone, the mixed solution was placed in an ultrasonic cleaner for ultrasonic dispersion for 30min. After ultrasonication, the weighed Ni, Cu, and Ti powders were added and stirred on a magnetic stirrer until the solution was separated into layers. After stirring, carry out vacuum filtration, place the separated powder in a vacuum drying box at 75 degrees for drying for 5 hours,...

Embodiment 2

[0029] Three high-purity powders of Ni, Cu, Ti, and carbon nanotubes were weighed according to a certain mass ratio, wherein the Ni powder content was 56%wt, the powder particle size was 4μm; the Cu powder content was 33%wt, and the powder particle size was 4μm ; Ti powder content of 11%wt, powder particle size of 4μm, CNTs content of 0.4%wt, is a multi-walled carbon nanotube with a length of 2μm. The weighed CNTs were added to deionized water at a ratio of 0.1 g / L, and 68% of sodium dodecylbenzenesulfonate, 150% of Tween-20, and 150% of polystyrene were added relative to the mass of CNTs. Vinylpyrrolidone, the mixed solution was placed in an ultrasonic cleaner for ultrasonic dispersion treatment for 30min. After ultrasonication, the weighed Ni, Cu, and Ti powders were added and stirred on a magnetic stirrer until the solution was separated into layers. After stirring, carry out vacuum filtration, put the separated powder in a vacuum drying oven at 75 degrees to dry for 5 hou...

Embodiment 3

[0032] Three high-purity powders of Ni, Cu, Ti, and CNTs were weighed according to a certain mass ratio. The Ni powder content was 59%wt, and the powder particle size was 3μm; the Cu powder content was 33%wt, and the powder particle size was 3μm; Ti The powder content is 8% wt, the powder particle size is 3 μm, and the CNTs content is 0.5%. It is a multi-walled carbon nanotube with a length of 0.5 μm. The weighed CNTs were added to deionized water at a ratio of 0.1 g / L, and 68% sodium dodecylbenzenesulfonate, 150% Tween-20, and 150% polyethylene were added to the CNTs, respectively. Pyrrolidone, the mixed solution was placed in an ultrasonic cleaner for ultrasonic dispersion treatment for 30min. After ultrasonication, the weighed Ni, Cu, and Ti powders were added and stirred on a magnetic stirrer until the solution was separated into layers. After stirring, carry out vacuum filtration, put the separated powder in a vacuum drying oven at 75 degrees for drying for 5 hours, put ...

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Abstract

The invention discloses a Ni-Cu-Ti / CNTs porous composite material and a preparation method thereof. In the present invention, Ni, Cu, Ti element powders and dispersed CNTs are mixed uniformly, then ball-milled, cold-pressed to form green bodies, and then sintered to prepare porous composite materials. The porous composite material has abundant pores and uniform distribution, a simple and environmentally friendly preparation process, excellent hydrogen evolution catalytic activity and mechanical properties, and can be used for electrolytic hydrogen desorption and industrial filtration in an alkaline environment.

Description

technical field [0001] The invention relates to a preparation technology of a porous material, in particular to the preparation of a Ni-Cu-Ti / CNTs (carbon nanotube, CNTs for short) porous composite material that can be used for electrolytic hydrogen desorption and industrial filtration in an alkaline environment method. Background technique [0002] At present, two-thirds of the world's energy demand is achieved by fossil fuels such as oil and natural gas. The main reason is that these fuels are easy to transport, store, and mine; in addition, coal also accounts for a considerable proportion of the world's energy supply. . However, these non-renewable energy sources are increasingly depleted. In order to solve the problems such as the increasing energy demand of human beings and the environmental pollution caused by energy, scientists are committed to finding new clean and renewable energy sources. The calorific value of hydrogen is two to three times that of other fuels....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C19/03C22C1/08C25B1/04C25B11/031C25B11/046
CPCC22C19/03C22C19/002C22C26/00B22F3/11C25B1/04C25B11/04C22C2026/002Y02E60/36Y02P20/133
Inventor 吴靓黄佳佳周子坤肖逸锋张乾坤陈宇
Owner XIANGTAN UNIV
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