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Carbon nano-tube-porous carbon composite material preparation method

A technology of composite materials and carbon nanotubes, which is applied in the direction of carbon nanotubes, carbon preparation/purification, nano-carbon, etc., can solve the problems of high cost of organic ligands, long synthesis cycle, unfavorable industrial scale production, etc., and achieve low cost , high conductivity, conducive to the effect of large-scale mass production

Active Publication Date: 2019-12-13
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the cost of organic ligands involved in this method is high, and the synthesis period is long, which is not conducive to industrial scale production.

Method used

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  • Carbon nano-tube-porous carbon composite material preparation method
  • Carbon nano-tube-porous carbon composite material preparation method
  • Carbon nano-tube-porous carbon composite material preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A preparation method of carbon nanotube-porous carbon composite material, comprising the steps of:

[0045] (1) Disperse 10g of lamellar porous magnesium oxide in 100mL of water to obtain a suspension, then drop nickel nitrate solution (dissolve 0.63g of nickel nitrate in 8mL of water) into the suspension, and mix it uniformly by ultrasonication for 30min. Suction filtration, drying and pulverizing the obtained filter residue, and then calcining at 550° C. for 30 minutes to obtain a carbon tube template;

[0046] (2) Add 10g of carbon tube templating agent and 10g of asphalt into solvent ethanol, stir and mix evenly, dry, put the obtained powder in a porcelain boat, and calcinate in a high-temperature tube furnace at 800°C under the protection of nitrogen 30min, then cool down and take it out to obtain black powder, rinse the black powder with dilute hydrochloric acid and rinse it to neutrality with deionized water, and finally filter it with suction and dry it to obtai...

Embodiment 2

[0055] A preparation method of carbon nanotube-porous carbon composite material, comprising the steps of:

[0056] (1) The preparation of carbon tube template is the same as in Example 1;

[0057] (2) Add 10g of carbon tube templating agent and 10g of asphalt into solvent ethanol, stir and mix evenly, dry, put the obtained powder in a porcelain boat, and calcinate at 900°C in a high-temperature tube furnace under nitrogen protection 20min, then cool down and take it out to get a black powder, pickle the black powder with dilute hydrochloric acid, rinse it with deionized water until neutral, and finally filter it with suction and dry it to get the carbon nanotube-porous carbon composite material, and measure the specific surface area 984.6m 2 / g.

[0058] The transmission electron microscope figure of the carbon nanotube-porous carbon composite material that embodiment 2 makes is shown in Figure 9 ,Depend on Figure 9 It can be seen that a large number of carbon nanotubes ...

Embodiment 3

[0062] A preparation method of carbon nanotube-porous carbon composite material, comprising the steps of:

[0063] (1) The preparation of carbon tube template is the same as in Example 1;

[0064] (2) Add 10g of carbon tube templating agent and 15g of oil slurry into the solvent tar, stir and mix evenly, dry, put the obtained powder in a porcelain boat, and put it in a high-temperature tube furnace under nitrogen protection at 800°C Calcined for 40min, then cooled and taken out to obtain black powder, the black powder was pickled with dilute hydrochloric acid, rinsed with deionized water to neutrality, and finally filtered and dried to obtain the carbon nanotube-porous carbon composite material. Surface area is 993.2m 2 / g.

[0065] The electron micrograph of the carbon nanotube-porous carbon composite material that embodiment 3 makes is shown in Figure 13 , where A is the scanning electron microscope image, and B is the transmission electron microscope image. It can be se...

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Abstract

The invention relates to a carbon nano-tube-porous carbon composite material preparation method, which comprises: dispersing lamellar porous magnesium oxide in water to obtain a suspension, adding a nickel nitrate solution into the suspension in a dropwise manner, uniformly mixing, carrying out suction filtration, drying the filter residue, crushing, and calcining to obtain a carbon tube templateagent; adding the carbon tube template agent and a carbon precursor into a solvent according to a weight ratio of 0.5-10:1, uniformly mixing, drying, calcining at a high temperature under protective gas, cooling, and taking out to obtain black powder; and washing with an acid, rinsing with deionized water to achieve a neutral state, performing suction filtration, and drying to obtain the carbon nano-tube-porous carbon composite material. According to the present invention, the method has characteristics of simple operation and low cost, is suitable for large-scale batch production, and can achieve the synchronous regulation of the morphology and the structure of carbon nano-tube-porous carbon; and the prepared composite material reserves the lamellar morphology of the template, has the hierarchical pore distribution of mesopores and micropores, has characteristics of high conductivity and rich pore structure, and can be used as an electrode material, a catalytic material or a catalystcarrier in the fields of energy storage, catalysis and the like.

Description

technical field [0001] The invention relates to a preparation method of a carbon nanotube-porous carbon composite material, belonging to the technical field of carbon materials. Background technique [0002] Carbon nanotube-porous carbon composite is a porous nanocarbon material supported by a 3D network, which not only has a rich pore structure, but also has the conductivity provided by the carbon nanotube conductive network. Compared with pure porous carbon, it has a stronger bulk structure and faster electron transport rate, and has broad application prospects in energy storage, photoelectric materials, catalysis and other fields. [0003] The existing preparation methods of carbon nanotubes-porous carbon composites are mostly two-step methods, mainly based on carbon nanotubes followed by carbon encapsulation (ACS applied materials&interfaces.2013,5(21):11355-11362)(Journal ofMaterials Chemistry.2012 , 22(14):6603-6612), the preparation process of this method is cumberso...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/16C01B32/05C01F5/02
CPCC01B32/16C01B32/05C01F5/02C01P2004/20C01P2002/20
Inventor 宋欣钰姜瑞雨张磊
Owner YANCHENG INST OF TECH
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