Carbon nanoribbon with large specific surface area and preparation method thereof

A nanobelt and porous carbon technology, applied in the fields of nanotechnology, nanotechnology and nanotechnology for materials and surface science, can solve the problems of complex process, limited application prospects of porous carbon, high cost, etc. The effect of easy industrial production and short process

Active Publication Date: 2014-07-30
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods are complicated and costly, which greatly limits the application prospects of these specially shaped porous carbons.
[0004] In the prior art, the preparation of porous carbon nanobelts has not been reported. For example, the application numbers 201010253257, 201210174211 and 201210174230 only involve the preparation of graphene nanobelts

Method used

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  • Carbon nanoribbon with large specific surface area and preparation method thereof
  • Carbon nanoribbon with large specific surface area and preparation method thereof
  • Carbon nanoribbon with large specific surface area and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1. Preparation of nanobelts

[0035] Dissolve 1.06 grams of p-xylene in 100 mL of nitrobenzene, add 13.4 grams of anhydrous aluminum trichloride, stir evenly, add 2.0 grams of dichloromethane, stir and react for 2 hours, and then transfer to a polytetrafluoroethylene reactor. React at 100°C for 12 hours, cool naturally, filter, wash with ethanol, and dry to obtain a brown-black spongy powder.

[0036] The chemical equation for this reaction is as follows:

[0037]

[0038] 2. Carbonization

[0039] Weigh 1.0 g of the above powder, put it into a crucible, raise the temperature from 5°C to 500°C per minute under an inert atmosphere, and keep it warm for 10 hours to obtain 0.76 g of black powder.

[0040] 3. Activation

[0041] Take 0.76 g of carbonized powder, add 0.76 g of KOH, grind evenly, transfer to an atmosphere furnace, raise the temperature to 700°C at 5°C per minute under an inert atmosphere, keep it warm for 4 hours, soak the obtained powder in water for 2...

Embodiment 2

[0045] 1. Preparation of nanobelts

[0046] Dissolve 1.34 grams of p-diethylbenzene in 100 mL of nitrobenzene, add 6.4 grams of boron trifluoride, stir evenly, add 2.0 grams of dichloromethane, stir and react for 2 hours, then transfer to a polytetrafluoroethylene reactor, React at 100°C for 12 hours, filter after natural cooling, wash with ethanol, and dry to obtain 1.5 g of brown-black spongy powder.

[0047] 2. Carbonization

[0048] Weigh 1.0 g of the above powder, put it into a crucible, raise the temperature from 5 °C to 800 °C per minute under an inert atmosphere, and keep it warm for 2 hours to obtain 0.69 g of black powder.

[0049] 3. Activation

[0050] Take 0.69 grams of carbonized powder, add 6.9 grams of K 2 CO 3 , grind evenly, transfer to an atmosphere furnace, heat up to 850°C at 5°C per minute under an inert atmosphere, keep warm for 4 hours, soak the obtained powder in water for 2 hours, filter, wash with dilute hydrochloric acid, wash with water, and dr...

Embodiment 3

[0054] 1. Preparation of nanobelts

[0055] Dissolve 1.10 grams of hydroquinone in 100 mL of water, add 10 grams of concentrated sulfuric acid, stir well, add 2.0 grams of dichloromethane, stir well, then transfer to a polytetrafluoroethylene reactor, react at 190 ° C for 12 hours, after natural cooling Filter, wash with ethanol, and dry to obtain 1.3 g of brown-black spongy powder.

[0056] 2. Carbonization

[0057] Weigh 1.0 g of the above powder, put it into a crucible, raise the temperature to 900 °C at 5 °C per minute under an inert atmosphere, and keep it warm for 2 hours to obtain 0.64 g of black powder.

[0058] 3. Activation

[0059] Take 0.6 grams of carbonized powder, add 3.6 grams of ZnCl 2 , grind evenly, transfer to an atmosphere furnace, heat up to 650°C per minute at 5°C under an inert atmosphere, keep warm for 6 hours, soak the obtained powder in dilute hydrochloric acid for 6 hours, wash with dilute hydrochloric acid, wash with water, and dry to obtain 0.3...

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Abstract

The invention relates to a porous carbon nanoribbon with a large specific surface area. A tetra-functional group monomer and a bifunctional group are subjected to condensation polymerization so as to form a full-carbon ladder polymer. The full-carbon ladder polymer spontaneously generates a nanoribbon in a generation process, a template is not needed, and then the nanoribbon is subjected to high-temperature carbonization in an inert atmosphere so as to obtain the porous carbon nanoribbon. The obtained porous carbon nanoribbon has a large specific surface area, is used as an electrode material of a supercapacitor and has excellent capacitive property; a technology is simple; and raw materials are easily available.

Description

technical field [0001] The invention relates to a carbon nanobelt with a high specific surface area and a preparation method thereof, belonging to the field of nanosynthesis. Background technique [0002] Porous carbon materials have been widely used due to their easy preparation, tunable pore structure, and electrical conductivity, mainly for catalyst supports, adsorbents, and energy storage materials (such as carbon-based supercapacitors and lithium-sulfur batteries). [0003] The common morphology of porous carbon materials includes spherical (porous carbon spheres), fibrous (carbon nanotubes, activated carbon fibers), sheet (graphene) and granular (activated carbon). Among them, granular porous carbon is the most common. Activated carbon produced from plant materials such as coconut shells, almond shells, and rice husks, and mineral raw materials such as coal, coal tar, and asphalt are all granular. Compared with granular activated carbon, porous carbon such as porous c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02B82Y30/00C01B32/318C01B32/348
Inventor 曾绍忠王秀田赵志刚陈效华
Owner CHERY AUTOMOBILE CO LTD
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