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Preparation method of high-specific-surface-area porous nitrogen-doped graphitizing carbon nanomaterial

A high specific surface area, nano carbon material technology, applied in nano carbon, nano technology for materials and surface science, chemical instruments and methods, etc., can solve the problem of poor degree of graphitization, small specific surface area, low nitrogen content, etc. problem, to achieve the effect of increasing the degree of graphitization, increasing the specific surface area, and increasing the nitrogen content

Active Publication Date: 2013-09-18
HEILONGJIANG UNIV
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Problems solved by technology

[0006] The present invention aims to solve the problems of small specific surface area, low nitrogen content, low yield, poor degree of graphitization and high cost in the preparation of nitrogen-doped graphitized nano-carbon materials in the prior art, and provides a porous nitrogen-doped carbon material with high specific surface area. Preparation method of heterographitized nano-carbon material

Method used

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  • Preparation method of high-specific-surface-area porous nitrogen-doped graphitizing carbon nanomaterial
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  • Preparation method of high-specific-surface-area porous nitrogen-doped graphitizing carbon nanomaterial

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specific Embodiment approach 1

[0027] Specific Embodiment 1: In this embodiment, a method for preparing a porous nitrogen-doped graphitized nano-carbon material with a high specific surface area is specifically carried out according to the following steps:

[0028] 1. Dissolve the carbon source in the solvent, then add the nitrogen source, mix and stir evenly; then add the catalyst and pore-forming agent, then control the temperature at 80°C-100°C, the stirring speed at 50r / min-300r / min, and the stirring time 10h-15h to obtain the complex, wherein the mass ratio of the carbon source, nitrogen source, catalyst and pore-forming agent is 1:(1-5):1:(1-5);

[0029] 2. Curing the compound obtained in Step 1 at a temperature of 50°C-100°C, the curing time is 4h-8h, and then under the condition of inert gas, control the heating rate at 1°C / min-15°C / min, from room temperature Raise the temperature to 800°C-1300°C, and then carry out carbonization. The carbonization time is 10min-5h, and the carbonization atmosphere ...

specific Embodiment approach 2

[0031] Embodiment 2: This embodiment differs from Embodiment 1 in that the carbon source described in step 1 is one of glucose, starch, sucrose and fructose or a mixture of several of them in any ratio. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0032] Specific embodiment three: the difference between this embodiment and specific embodiment one is that the nitrogen source described in step one is one of urea, melamine, gelatin, aniline, pyrrole, acetonitrile, dimethylformamide and octadecylamine species or a mixture of several of them in any ratio. Others are the same as in the first embodiment.

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Abstract

The invention discloses a preparation method of a high-specific-surface-area porous nitrogen-doped graphitizing carbon nanomaterial, relating to a preparation method of a carbon material and aiming at solving the problems of small specific surface area, low nitrogen content, low productivity, poor graphitizing degree and high cost of the nitrogen-doped graphitizing carbon nanomaterial prepared by the prior art. The preparation method comprises the steps of: I. preparing a complex; II. curing and carbonizing the complex; and III. carrying out acid leaching method treatment, and drying. Compared with an existing nitrogen-doped graphitizing carbon nanomaterial, the prepared high-specific-surface-area porous nitrogen-doped graphitizing carbon nanomaterial has the advantages that the graphitizing degree is improved, the nitrogen content is increased, and the specific surface area is obviously increased, and the high-specific-surface-area porous nitrogen-doped graphitizing carbon nanomaterial has obvious pore diameter distribution. The preparation method is used for preparing the high-specific-surface-area porous nitrogen-doped graphitizing carbon nanomaterial.

Description

technical field [0001] The invention relates to a method for preparing carbon materials. Background technique [0002] With the continuous depletion of non-renewable resources such as coal, oil, and natural gas and the increasing environmental pollution, it is particularly urgent to research and develop new energy storage materials with high electrochemical performance. Carbon materials show great advantages over other types of new energy storage materials (polymers, metal oxides, and hydroxides) due to their low toxicity, low pollution, and cheap and readily available raw materials. Currently commonly used carbon materials are: activated carbon, glassy carbon, carbon fiber, and foamed carbon materials obtained by pyrolyzing polymer matrices. Compared with these commonly used carbon materials, graphitized carbon nanomaterials have higher stability and good electrical conductivity than ordinary carbon materials, but have a relatively complete structure, fewer active sites, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04B82Y30/00C01B32/15C01B32/205
Inventor 付宏刚孙立田春贵杨颖阚侃历美彤尹婕田国辉陈亚杰
Owner HEILONGJIANG UNIV
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