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Method for preparing sulfur-doped graphene-like mesoporous carbon nano-material

A carbon nanomaterial and ene mesoporous technology, which is applied in the field of preparing graphene-like carbon nanomaterials, can solve the problems of complicated preparation steps, no cost advantage, a large number of chemical reagents, etc., and achieves strong controllability, easy purification, and simple operation. Effect

Inactive Publication Date: 2018-06-15
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation steps are cumbersome and require a large amount of chemical reagents, so there is no cost advantage
The current price of graphene oxide on the market is about 550 yuan / gram, and the high price is the main obstacle to industrial application

Method used

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  • Method for preparing sulfur-doped graphene-like mesoporous carbon nano-material
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  • Method for preparing sulfur-doped graphene-like mesoporous carbon nano-material

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Embodiment Construction

[0021] The present invention is described further below in conjunction with example, but the present invention is not limited to specific embodiment.

[0022] 1) Weigh 8 grams of magnesium powder and 42 grams of NaCl powder, mix them with a shaker in a plastic test tube, and then pour them into two large-sized corundum boats.

[0023] 2) Put the two ceramic boats containing the reactants into the furnace tube, pump air with a mechanical vacuum pump, and then fill it with argon, repeat twice to remove oxygen.

[0024] 3) Introduce argon gas into the liquid carbon disulfide container, and bubble the liquid at a flow rate of 200mL / min, Ar and CS 2 The mixed gas is passed into the tube furnace. At the same time, the furnace was heated up to 600°C at a rate of 15°C and held for 90 minutes. During the reaction, the tube furnace was pumped with a vacuum pump.

[0025] 4) After the reaction, the furnace was naturally cooled to room temperature, and the ceramic boat was taken out an...

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Abstract

The invention relates to preparation of a sulfur-doped graphene-like mesoporous carbon nano-material. A porous carbon nano-material has a very high application value in the field of supercapacitors, Li-ion battery negative electrodes, catalysis, adsorption and the like. A thermal reduction reaction between magnesium powder and carbon disulfide gas is utilized to obtain the mesoporous graphene-likecarbon nano-material, so that high-yield preparation of the high-quality graphene-like carbon material can be realized. Liquid carbon disulfide is bubbled with argon, volatile steam of liquid carbondisulfide is taken into a reaction cavity to react with magnesium powder at 550-650 DEG C to obtain a carbon nano-material and magnesium sulfide mixture. The carbon nano-material and magnesium sulfidemixture is sequentially washed and pickled and subjected to freeze-drying to obtain the loose and light graphene-like mesoporous carbon nano-material of which the sulfur doping percent is about 6%. As the carbon nano-material is prepared by consuming magnesium powder to reduce carbon disulfide, the advantages of low cost and high yield are achieved. The introduced sulfur doping facilitates application of the sulfur-doped graphene-like mesoporous carbon nano-material to electrochemical energy storage electrodes.

Description

technical field [0001] The invention belongs to the field of functional carbon nanomaterials, and its main content is a technology for preparing graphene-like carbon nanomaterials. By utilizing the high-temperature reaction of magnesium powder and carbon disulfide vapor, a mixed product of carbon and magnesium sulfide is produced. After pickling treatment, sulfur-doped mesoporous carbon nanomaterials are obtained. The method has simple process and low cost. Product application areas include ion battery negative electrode, super capacitor, solar light and hot water evaporation, etc. Background technique [0002] Carbon element is one of the most closely related and important elements existing in nature. It has SP, SP2, SP3 hybridization and various electronic orbital characteristics. In addition, the anisotropy of SP2 leads to the anisotropy of the crystal and other The anisotropy of the arrangement. Therefore, carbon materials with carbon as the only constituent element ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/15H01G11/24H01G11/32H01M4/583B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01P2004/03H01G11/24H01G11/32H01M4/583Y02E60/10Y02E60/13
Inventor 刘金章
Owner BEIHANG UNIV
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