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Coal-based hierarchical nano-carbon material based on soft template method and its preparation method

A soft template method, nano-carbon technology, applied in chemical instruments and methods, hybrid/electric double layer capacitor manufacturing, carbon compounds, etc., can solve the problems of uncontrollable pore size, small specific surface area and small capacity of porous carbon materials. Achieve the effect of solving uncontrollable pore size, high specific surface area and high capacity

Active Publication Date: 2021-08-13
XINJIANG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides a coal-based layered nano-carbon material based on a soft template method and a preparation method thereof, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problem that the specific surface area of ​​the nanomaterial prepared by the existing soft template method is small , small capacity, and uncontrollable pore size of porous carbon materials

Method used

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  • Coal-based hierarchical nano-carbon material based on soft template method and its preparation method
  • Coal-based hierarchical nano-carbon material based on soft template method and its preparation method
  • Coal-based hierarchical nano-carbon material based on soft template method and its preparation method

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Embodiment 1

[0026] Embodiment 1: The coal-based layered nano-carbon material based on the soft template method is obtained according to the following steps: in the first step, the coal is pulverized, and after sieving, ultrafine coal powder is obtained, and the ultrafine coal powder is Mix evenly with strong oxidant solution, carry out liquid phase oxidation reaction, obtain reaction product, after purification and washing of reaction product, obtain oxidized coal; second step, dissolve required amount of oxidized coal and block polymer F127 in ethanol solution , to obtain the first mixed solution, add the required amount of potassium hydroxide solid into the first mixed solution, mix uniformly to obtain the second mixed solution, and dry the second mixed solution under the condition of 50°C to 120°C to obtain Powder product, wherein, the mass ratio of oxidized coal, block polymer F127, and potassium hydroxide solid is 1:1:5; in the third step, the powder product is heated at a rate of 5°C...

Embodiment 2

[0030] Embodiment 2: The coal-based layered nano-carbon material based on the soft template method is obtained according to the following steps: in the first step, the coal is pulverized, and after sieving, ultrafine coal powder is obtained, and the ultrafine coal powder is Mix evenly with strong oxidant solution, carry out liquid phase oxidation reaction, obtain reaction product, after purification and washing of reaction product, obtain oxidized coal; second step, dissolve required amount of oxidized coal and block polymer F127 in ethanol solution , to obtain the first mixed solution, add the required amount of potassium hydroxide solid into the first mixed solution, mix uniformly to obtain the second mixed solution, and dry the second mixed solution at 50°C or 120°C to obtain Powder product, wherein, the mass ratio of oxidized coal, block polymer F127, and potassium hydroxide solid is 1:1:5; in the third step, the powder product is heated at a rate of 5°C / min under a protect...

Embodiment 3

[0031] Embodiment 3: As an optimization of the above embodiment, the strong oxidizing agent solution is a mixed solution of concentrated sulfuric acid and concentrated nitric acid, wherein, in the mixed solution, the volume ratio of concentrated sulfuric acid to concentrated nitric acid is 3:1.

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Abstract

The invention relates to the technical field of coal-based carbon materials, and relates to a coal-based layered nano-carbon material based on a soft template method and a preparation method thereof. The soft-template method-based coal-based layered nano-carbon material is obtained according to the following steps: The coal powder is reacted with a strong oxidant solution to obtain oxidized coal, and the block polymer F127 is dissolved in an ethanol solution to obtain a first mixed solution, and potassium hydroxide solid is added into it to obtain a second mixed solution, and then dried to obtain a mixed solution. The powder product is carbonized, washed and dried to obtain a coal-based layered nano-carbon material based on the soft template method. The preparation method of the invention is simple, and the advantages of the chemical carbonization and the soft template method are utilized to solve the uncontrollable influence of the carbonization treatment on the pore size of the porous carbon material. The present invention adopts block copolymer F127 as soft template and oxidized coal nanoparticles as carbon source to prepare coal-based layered nano-carbon material with high specific surface area, hierarchical porous structure and high capacity.

Description

technical field [0001] The invention relates to the technical field of coal-based carbon materials, and relates to a coal-based layered nano-carbon material based on a soft template method and a preparation method thereof. Background technique [0002] In recent years, supercapacitors, as important chemical energy storage devices, have received more and more attention in the application of energy storage devices. As an important part of supercapacitors, electrode materials greatly affect the performance of capacitors. Carbon materials have the advantages of low cost, simple preparation process, high operating voltage window, and large charge and discharge current. For supercapacitors, they are potential alternative electrode materials. my country's coal resources are relatively abundant, complete in variety, and widely distributed; therefore, it has become a common practice to make full use of the advantages of my country's rich coal resources and use coal with high carbon ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/318C01B32/348H01G11/34H01G11/44H01G11/86
CPCC01P2002/72C01P2002/80C01P2004/03C01P2006/12C01P2006/17C01P2006/40C01B32/318C01B32/348H01G11/34H01G11/44H01G11/86Y02E60/13
Inventor 张苏赵晶王鲁香朱家瑶贾殿赠贾丽霞
Owner XINJIANG UNIVERSITY