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A kind of sea urchin-like graphene and preparation method thereof

A sea urchin-like and graphene technology, applied in the field of sea urchin-like graphene and its preparation, can solve the problems of easy curling of two-dimensional graphene, single structure of three-dimensional graphene, etc., to ensure stability and other properties, simple preparation process, mild effects

Active Publication Date: 2022-04-05
湖南医家智烯新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a sea urchin-shaped graphene and a preparation method thereof, so as to solve the technical problems that two-dimensional graphene is extremely easy to curl and three-dimensional graphene has a single structure in the prior art

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  • A kind of sea urchin-like graphene and preparation method thereof
  • A kind of sea urchin-like graphene and preparation method thereof

Examples

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Embodiment 1

[0046] A preparation method for sea urchin-shaped graphene, comprising the steps of:

[0047] 1) 1.19g NiCl 2 ·6H 2 O was added to 100mL ethylene glycol, and centrifuged at 900r / min to obtain 0.05mol / L NiCl 2 solution;

[0048] Add 0.8 g NaOH to the above NiCl 2 In the solution, ensure that there is no precipitate and no precipitation, stir for 5 minutes;

[0049] Add 10.0 g of hydrazine hydrate to the above solution and stir thoroughly to obtain a green mixed solution;

[0050] Then it was transferred to a flask, kept in a water bath at 70°C, stirred for 2 hours, and the color of the solution gradually turned black;

[0051] After the reaction, the above solution was suction filtered to obtain a floc, which was washed three times with deionized water and absolute ethanol, and dried at 60°C for 30 minutes to obtain sea urchin-shaped nickel nanocrystals;

[0052] 2) Gained sea urchin-like nickel nanocrystals are put into a CVD tubular furnace, and a mixed atmosphere consi...

Embodiment 2

[0056] A preparation method for sea urchin-shaped graphene, comprising the steps of:

[0057] 1) Add 0.26g NiSO 4 ·6H 2 O was added to 100mL ethylene glycol, and centrifuged at 900r / min to obtain 0.01mol / L NiSO 4 solution;

[0058] Add 0.4 g NaOH to the above NiSO 4 In the solution, ensure that there is no precipitate and no precipitation, stir for 5 minutes;

[0059] Add 40.0g of sodium borohydride to the above solution and stir thoroughly to obtain a green mixed solution;

[0060] Then it was transferred to a flask, kept in a water bath at 50° C., stirred for 4 hours, and the color of the solution gradually turned black;

[0061] After the reaction, the above solution was suction filtered to obtain a floc, which was washed three times with deionized water and absolute ethanol, and dried at 40°C for 30 minutes to obtain sea urchin-shaped nickel nanocrystals;

[0062] 2) Gained sea urchin-shaped nickel nanocrystals are put into a CVD tubular furnace, and a mixed atmosphe...

Embodiment 3

[0066] A preparation method for sea urchin-shaped graphene, comprising the steps of:

[0067] 1) 2.91g Ni(NO 3 ) 2 ·6H 2 O was added to 100mL ethylene glycol, and centrifuged at 900r / min to obtain 0.1mol / L NiCl 2 solution;

[0068] Add 0.8 g NaOH to the above NiCl 2 In the solution, ensure that there is no precipitate and no precipitation, stir for 5 minutes;

[0069] Add 4.0g of oxalic acid to the above solution and stir thoroughly to obtain a green mixed solution;

[0070] Then it was transferred to a flask, kept in a water bath at 100°C, stirred for 1 hour, and the color of the solution gradually turned black;

[0071] After the reaction, the above solution was suction-filtered to obtain flocs, which were washed three times with deionized water and absolute ethanol, and dried at 80° C. to obtain sea urchin-shaped nickel nanocrystals.

[0072] 2) Gained sea urchin-shaped nickel nanocrystals are put into a CVD tubular furnace, and a mixed atmosphere consisting of 30 sc...

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Abstract

The invention discloses a sea urchin-shaped graphene and a preparation method thereof, and relates to the field of graphene material preparation. In the present invention, nickel salt and reducing agent are reacted under alkaline conditions to self-assemble to form a sea urchin-shaped three-dimensional nickel substrate; through chemical vapor deposition technology, graphene is deposited on the sea urchin-shaped three-dimensional nickel substrate; acid is added to remove the nickel substrate to obtain Sea urchin-shaped three-dimensional graphene. The sea urchin-like three-dimensional graphene of the present invention has a good dispersion type, and effectively prevents problems such as stacking, porosity, and unstable configuration. The preparation process of the invention is simple, the conditions are mild, and the source of raw materials is wide, which is suitable for mass production and has broad application prospects.

Description

technical field [0001] The invention relates to the technical field of graphene materials, in particular to a sea urchin-shaped graphene and a preparation method thereof. Background technique [0002] Graphene material is a single atomic layer material with a unique two-dimensional honeycomb structure, which has excellent electrical, thermal and mechanical properties. Based on its unique properties, graphene materials are hailed as the "king of new materials in the 21st century" by the scientific community, and are being used in various fields including energy, environment and biology. However, during the application process, it was found that graphene materials have some problems. For example, graphene with a two-dimensional structure is prone to curling due to its ultra-thin thickness, resulting in a significant decrease in its corresponding performance. It is greatly restricted in practical application. Another example is that due to the strong π-π interaction and van d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/184
CPCC01B32/186C01P2004/30C01P2006/12C01P2004/62
Inventor 杜涛李思幸贺盼盼其他发明人请求不公开姓名
Owner 湖南医家智烯新材料科技有限公司
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