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Orientated carbon material with different dimensions as well as preparation method and application of orientation type carbon material

A carbon material and orientation technology, applied in the direction of nano-carbon, fiber chemical characteristics, electrical components, etc., can solve the problems of difficult control of deposition process, need for further development, high equipment cost, etc., and achieve good reproducibility, obvious orientation, and reaction controllable effect

Pending Publication Date: 2021-07-20
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The physical deposition method can obtain target products with different structures by adjusting various physical parameters, such as voltage, current, electrode spacing, and raw material ratio, but the deposition process is difficult to control and the cost of equipment is high, and its scale production needs further exploration
The hot pressing method combines pressure and high temperature to reform the orientation of carbon materials, but it is generally controlled at the macro scale, and further development is needed for the optimization of the micro scale

Method used

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  • Orientated carbon material with different dimensions as well as preparation method and application of orientation type carbon material
  • Orientated carbon material with different dimensions as well as preparation method and application of orientation type carbon material
  • Orientated carbon material with different dimensions as well as preparation method and application of orientation type carbon material

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preparation example Construction

[0039] The invention provides a method for preparing a different-dimensional oriented carbon material, comprising the following steps:

[0040] React the material at 300-700°C for 2-24 hours to obtain oriented carbon materials with different dimensions;

[0041] The material is substance a; or the material is a mixed solution including substance a and substance b;

[0042] The substance a includes resin, alcohol compound, ether compound or sugar compound;

[0043] The substance b includes at least one of water, dry ice and ice.

[0044] In some embodiments of the present invention, the mixed solution comprising substance a and substance b is prepared according to the following method:

[0045] Mix substance a and substance b to obtain a mixed solution.

[0046] In some embodiments of the present invention, the mixing is performed at room temperature. In some embodiments of the present invention, the mixing is carried out under the condition of stirring.

[0047] In some e...

Embodiment 1

[0088] Dissolve 2g of sucrose in 20mL of water, stir evenly at room temperature, the pH value is 7, transfer to a high-temperature stainless steel kettle, hydrothermally react at 500°C for 10h, then cool naturally to room temperature, soak in dilute hydrochloric acid for 6h to remove impurities, After repeated washing with deionized water for 5 times, it was dried to obtain 1-5 μm oriented carbon microspheres (the (002) crystal plane was emanating from the center of the sphere to the surface of the sphere).

Embodiment 2

[0090] Dissolve 2g of glucose in 20mL of water, stir evenly at room temperature, the pH value is 7, transfer to a high-temperature stainless steel kettle, hydrothermally react at 500°C for 10h, then cool naturally to room temperature, soak in dilute hydrochloric acid for 6h to remove impurities, After repeated washing with deionized water for 5 times, it was dried to obtain 1-5 μm oriented carbon microspheres (the (002) crystal plane was emanating from the center of the sphere to the surface of the sphere).

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Abstract

The invention relates to the technical field of production of oriented carbon materials, in particular to an oriented carbon material with different dimensions as well as a preparation method and application of the oriented carbon material. The preparation method comprises the following steps: reacting materials at 300-700 DEG C for 2-24 hours to obtain different-dimension oriented carbon materials; wherein the material is a substance a; or the material is a mixed solution comprising a substance a and a substance b; the substance a comprises resin, an alcohol compound, an ether compound or a carbohydrate compound; and the substance b comprises at least one of water, dry ice and ice. According to the invention, the resin, the alcohol compound, the ether compound or the carbohydrate compound is used as a carbon source, the pH value is adjusted by using acid or alkali, and carbon microspheres, carbon nanorods and carbon nanofibers are prepared in a supercritical body of water or carbon dioxide for the first time. The method provided by the invention has the characteristics of controllable reaction and simple process, and the prepared carbon material shows obvious orientation and good reproducibility, and shows excellent performance as an electrochemical energy storage material.

Description

technical field [0001] The invention relates to the technical field of production of oriented carbon materials, in particular to an oriented carbon material with different dimensions, its preparation method and application. Background technique [0002] There are a wide variety of carbon materials, from diamond, graphite, carbon fiber, carbon nanotubes with crystal structure to soft carbon, hard carbon, glassy carbon, porous carbon with non-graphitized structure, all of which play an important role in human life. It covers various fields such as machinery, electronics, electrical appliances, aerospace, metallurgy and chemistry. [0003] However, for a certain carbon material, its microstructure usually shows specificity. For example, graphite has a large (002) crystal plane and small interlayer spacing; the (002) crystal planes of carbon fibers and carbon nanotubes are generally arranged along the axial direction, which lead to their anisotropy in physical and chemical prop...

Claims

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Application Information

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IPC IPC(8): C01B32/15D01F9/12D01F9/21D01F9/24D01F9/26H01M4/587H01M10/0525H01M10/054B82Y40/00
CPCC01B32/15H01M4/587H01M10/0525H01M10/054D01F9/24D01F9/26D01F9/21D01F9/12B82Y40/00Y02P20/54Y02E60/10
Inventor 林宁钱逸泰钱勇
Owner UNIV OF SCI & TECH OF CHINA
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