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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: 2021-07-27
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Ni-Cu-Ti/CNTs porous composite material and preparation method thereof
  • Ni-Cu-Ti/CNTs porous composite material and preparation method thereof

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Effect test

Embodiment 1

[0026] Three high-purity powders of Ni, Cu, Ti, and CNTs were weighed according to a certain mass ratio, wherein the content of Ni powder was 55%wt, and the particle size of the powder was 5μm; the content of Cu powder was 35%wt, and the particle size of the powder was 5μm; The powder content is 10%wt, the powder particle size is 5μm, the CNTs content is 0.3%wt, and it is a multi-walled carbon nanotube with a length of 1μm. Add the weighed CNTs into deionized water at a ratio of 0.1 g / L, and add 68% sodium dodecylbenzenesulfonate, 150% Tween-20, and 150% poly For vinylpyrrolidone, place the mixed solution in an ultrasonic cleaner for ultrasonic dispersion for 30 minutes. Add the weighed Ni, Cu, and Ti powders after the ultrasonication is completed, and place them on a magnetic stirrer to stir until the solution is separated into layers. After the stirring is completed, perform vacuum filtration, place the separated powder in a vacuum drying oven at 75°C and dry for 5 hours, p...

Embodiment 2

[0030] Weigh three high-purity powders of Ni, Cu, Ti, and carbon nanotubes according to a certain mass ratio, wherein the content of Ni powder is 56%wt, and the particle size of the powder is 4μm; the content of Cu powder is 33%wt, and the particle size of the powder is 4μm ; The content of Ti powder is 11%wt, the particle size of the powder is 4μm, the content of CNTs is 0.4%wt, and it is a multi-walled carbon nanotube with a length of 2μm. Add the weighed CNTs into deionized water at a ratio of 0.1 g / L, and add 68% sodium dodecylbenzenesulfonate, 150% Tween-20, and 150% poly For vinylpyrrolidone, place the mixed solution in an ultrasonic cleaner for ultrasonic dispersion treatment for 30 minutes. Add the weighed Ni, Cu, and Ti powders after the ultrasonication is completed, and place them on a magnetic stirrer to stir until the solution is separated into layers. After the stirring is completed, perform vacuum filtration, place the separated powder in a vacuum drying oven at...

Embodiment 3

[0033] Three high-purity powders of Ni, Cu, Ti, and CNTs were weighed according to a certain mass ratio, wherein the content of Ni powder was 59%wt, and the particle size of the powder was 3μm; the content of Cu powder was 33%wt, and the particle size of the powder was 3μm; The powder content is 8%wt, the powder particle size is 3 μm, the CNTs content is 0.5%, and it is a multi-walled carbon nanotube with a length of 0.5 μm. Add the weighed CNTs into deionized water at a ratio of 0.1g / L, and add 68% sodium dodecylbenzenesulfonate, 150% Tween-20, and 150% polyethylene For pyrrolidone, place the mixed solution in an ultrasonic cleaner for ultrasonic dispersion treatment for 30 minutes. Add the weighed Ni, Cu and Ti powders after the ultrasonication is completed, and place them on a magnetic stirrer to stir until the solution is separated into layers. After the stirring is completed, perform vacuum filtration, place the separated powder in a vacuum drying oven for 5 hours at 75°...

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Abstract

The invention discloses a Ni-Cu-Ti / CNTs porous composite material and a preparation method thereof. The porous composite material is prepared by uniformly mixing Ni, Cu and Ti powder with dispersed CNTs, performing ball milling and performing cold pressing to obtain a blank and sintering the blank. The porous composite material is rich in porosity and uniform to distribute, simple and environmental-friendly in preparation process, has excellent catalytic activity of hydrogen evolution and mechanical property and can be used in hydrogen evolution reaction and industrial filtration in an alkaline environment.

Description

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

Claims

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Application Information

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Patent Type & Authority Applications(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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