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Graphene self-supporting material subjected to ion-induced assembly and preparation method thereof

A technology of ion induction and graphene, applied in graphene, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of impractical, time-consuming, preparation of graphene materials, etc., to achieve improved conductivity, easy availability of raw materials, and low cost low effect

Active Publication Date: 2016-06-08
杭州德烯科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods all have time-consuming problems, and it is impossible to prepare complex-shaped graphene materials using arbitrary-shaped materials as templates.

Method used

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  • Graphene self-supporting material subjected to ion-induced assembly and preparation method thereof
  • Graphene self-supporting material subjected to ion-induced assembly and preparation method thereof
  • Graphene self-supporting material subjected to ion-induced assembly and preparation method thereof

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preparation example Construction

[0031] A kind of ion-induced assembly graphene self-supporting material and the steps of preparation method thereof are as follows:

[0032] 1) Add 1 part by weight of graphene oxide, 20-500 parts by weight of solvent, 0.1-1 part by weight of 25% mass fraction ammonia water in the container, and stir it evenly to obtain a graphene oxide dispersion;

[0033] 2) Adsorb the ionic cross-linking agent of 0-saturation concentration on the substrate;

[0034] 3) immerse the above-mentioned substrate in the graphene oxide dispersion liquid, and stay for 1 second to 30 minutes;

[0035] 4) Slowly propose the substrate adhered with graphene oxide gel;

[0036] 5) drying or lyophilizing the above-mentioned gel, removing the substrate, and obtaining the graphene oxide self-supporting material;

[0037] 6) Carrying out chemical reduction or thermal reduction to the above materials to obtain graphene self-supporting materials.

Embodiment 1

[0040] 1) Add 1 part by weight of graphene oxide, 500 parts by weight of solvent, 0.1-1 part by weight of ammonia water with a mass fraction of 25%, and stir it evenly to obtain a graphene oxide dispersion;

[0041] 2) Adhering 0.05M calcium chloride solution on the copper wire;

[0042] 3) immerse the above-mentioned copper wire in the graphene oxide dispersion liquid, and stay for 20 seconds;

[0043] 4) Slowly propose the copper wire adhered with graphene oxide gel;

[0044] 5) Dry the above gel, use FeCl 3 The solution removes the substrate to obtain graphene oxide tubular fibers;

[0045] 6) the above-mentioned material is reduced with hydroiodic acid to obtain a graphene tube, such as Figure 4 shown. The graphene tube can be used as a chemical-resistant and high-temperature-resistant delivery pipeline.

Embodiment 2

[0047] 1) Add 1 part by weight of graphene oxide, 500 parts by weight of solvent, and 0.1-1 part by weight of ammonia water in the container, and stir it evenly to obtain a graphene oxide dispersion;

[0048] 2) Adhering 0.05M calcium chloride solution on the inflated balloon;

[0049] 3) Submerge the above-mentioned balloon in the graphene oxide dispersion and stay for 20 seconds;

[0050] 4) propose a balloon adhered with graphene oxide gel;

[0051] 5) The above-mentioned gel is dried, and the balloon is deflated so that it is detached from the graphene oxide material to obtain a graphene oxide bowl-shaped container;

[0052] 6) After carrying out chemical reduction and heat treatment at 3000 degrees centigrade to the above-mentioned materials with hydroiodic acid, a graphene bowl-shaped container is obtained. like Figure 5 shown.

[0053] It can be used as a chemical-resistant and high-temperature-resistant container, with a temperature resistance of 690 degrees Celsi...

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Abstract

The invention discloses a graphene self-supporting material subjected to ion-induced assembly and a preparation method thereof. The preparation method of the graphene self-supporting material subjected to the ion-induced assembly comprises the following steps of (1), uniformly mixing graphene oxide, a solvent and ammonia water to obtain graphene oxide dispersion liquid; (2), taking a substrate, and adsorbing an ionic cross-linking agent solution with certain concentration on the substrate; (3), immersing the substrate in the graphene oxide dispersion liquid, and enabling the substrate to stay for a certain time; (4), taking out the substrate to which graphene oxide gel is adhered; (5), oven-drying or freeze-drying the gel, and removing the substrate, so as to obtain a graphene oxide self-supporting material; (6), carrying out chemical reduction and heat treatment on the material, so as to obtain the graphene self-supporting material. According to the graphene self-supporting material subjected to the ion-induced assembly and the preparation method thereof, the quick preparation, the thickness control and the microstructure control of a graphene material are realized simply and conveniently; the preparation of graphene materials in multiple forms and functions by using substrates in complicated shapes and made from multiple materials as templates is realized.

Description

technical field [0001] The invention relates to an ion-induced assembled graphene self-supporting material and a preparation method thereof. Background technique [0002] Graphene is a layer of carbon atoms with sp 2 A two-dimensional layer of carbon atoms formed by hybrid connections. It has many excellent properties such as ultra-high strength, large specific surface area, ultra-high thermal conductivity, and carrier mobility, and has important application value in the fields of electronic devices, energy storage, and composite materials. How to convert the excellent properties of graphene into the excellent properties of macroscopic materials is an important issue in graphene research. [0003] The construction of graphene self-supporting materials is to overlap or stack graphene sheets to form a self-supporting material with a certain strength. Currently reported methods for preparing graphene self-supporting materials include suction filtration method (Nature2007, 44...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04
CPCC01B2204/22C01P2004/03C01P2004/30
Inventor 高超赵晓莉
Owner 杭州德烯科技集团有限公司
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