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Three-dimensional structured graphene and its carbon-derived template catalytic pyrolysis preparation method

A three-dimensional structure, graphene technology, applied in the field of graphene, can solve the problems of low electrical conductivity of graphene materials, complex process, long cycle, etc., and achieve the effects of few layers, simple process and low cost

Active Publication Date: 2019-05-28
广州巨湾技研有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the patent CN105645402A uses graphene oxide as a precursor, forms sulfonated graphene through sulfonation reaction, and then freeze-dries after hydrothermal reaction with polyols to obtain ordered layered three-dimensional structure graphene material, but due to the introduction of functional groups , the process of this method is complex, the cycle is long, the energy consumption is high, and the conductivity of the obtained graphene material is low

Method used

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  • Three-dimensional structured graphene and its carbon-derived template catalytic pyrolysis preparation method
  • Three-dimensional structured graphene and its carbon-derived template catalytic pyrolysis preparation method
  • Three-dimensional structured graphene and its carbon-derived template catalytic pyrolysis preparation method

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Embodiment 1

[0038] The preparation method of a kind of three-dimensional structure graphene of the present embodiment comprises the following steps:

[0039] (1) Add 50 g of the pretreated macroporous acrylic cation exchange resin to 200 ml of cobalt chloride aqueous solution with a concentration of 0.2 mol / L, stir for 2 hours, put it in an 80° C. Air oven drying 12h, obtains the resin that adsorbs cobalt ion;

[0040] (2) Pulverize the product obtained in step (1), add 50g calcium hydroxide powder, grind and mix evenly;

[0041] (3) Dissolve 50 g of potassium hydroxide in 400 ml of absolute ethanol to form a potassium hydroxide / ethanol solution, add the product obtained in step (2) to the potassium hydroxide / ethanol solution, put into an 80° C. oil bath and stir to evaporate, and the mixture After it becomes a paste, put it in an oven at 80°C to continue drying for 12 hours, and then pulverize it again after drying;

[0042] (4) Put the product obtained in step (3) into a high-temperatur...

Embodiment 2

[0046] The preparation method of a kind of three-dimensional structure graphene of the present embodiment comprises the following steps:

[0047] (1) Add 50g of the pretreated macroporous acrylic adsorbent resin to 200ml of cobalt chloride aqueous solution with a concentration of 0.2mol / L, stir for 2 hours, put it in an 80°C water bath, stir and evaporate to dryness, and continue to put it in an 80°C drum Air oven drying 12h, obtains the resin that adsorbs cobalt ion;

[0048] (2) Pulverize the product obtained in step (1), add 50g calcium hydroxide powder, grind and mix evenly;

[0049] (3) Dissolve 50 g of potassium hydroxide in 400 ml of absolute ethanol to form a potassium hydroxide / ethanol solution, add the product obtained in step (2) to the potassium hydroxide / ethanol solution, put into an 80° C. oil bath and stir to evaporate, and the mixture After it becomes a paste, put it in an oven at 80°C to continue drying for 12 hours, and then pulverize it again after drying; ...

Embodiment 3

[0054] The preparation method of a kind of three-dimensional structure graphene of the present embodiment comprises the following steps:

[0055] (1) Add 50 g of the pretreated macroporous acrylic cation exchange resin to 200 ml of cobalt chloride aqueous solution with a concentration of 0.2 mol / L, stir for 2 hours, put it in an 80° C. Air oven drying 12h, obtains the resin that adsorbs cobalt ion;

[0056] (2) Pulverize the product obtained in step (1), add 50g calcium carbonate powder, grind and mix uniformly;

[0057] (3) Dissolve 50 g of potassium hydroxide in 400 ml of absolute ethanol to form a potassium hydroxide / ethanol solution, add the product obtained in step (2) to the potassium hydroxide / ethanol solution, put into an 80° C. oil bath and stir to evaporate, and the mixture After it becomes a paste, put it in an oven at 80°C to continue drying for 12 hours, and then pulverize it again after drying;

[0058] (4) heat-treating the product obtained in step (3) in a ni...

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Abstract

The invention discloses graphene with a three-dimensional structure and a preparation method thereof. The preparation method comprises the following steps of (1) mixing pretreated macroreticular resin and a metal ion salt water solution, stirring, and drying, so as to obtain resin for adsorbing metal ions; (2) crushing the resin for adsorbing the metal ions, adding a transition die cavity filling agent, and uniformly mixing; (3) adding a product obtained in step (2) into a pore expanding agent solution, stirring and drying; (4) performing heat treatment on a product obtained in step (3) under the inert gas atmosphere; (5) pickling a product obtained in step (4), filtering and drying, so as to obtain the graphene with the three-dimensional structure. The graphene with the three-dimensional structure has the characteristics that the opening pore self-support structure with multiple layers of micropores, mesopores, macropores and micrometer macroscopic pores is formed; the structure and distribution of each level of pores can be regulated, the number of layers is small, the specific surface area is large, the porosity is high, the conductivity is high, the density is low, the easiness in stacking is avoided, and the application prospect is broad.

Description

technical field [0001] The invention relates to the technical field of graphene, in particular to a preparation method for three-dimensional graphene and its carbon derived from template catalytic pyrolysis. Background technique [0002] As a new type of carbon nanomaterial, graphene has broad application prospects in the fields of electronic devices, energy storage, catalysis, sensors and new composite materials due to its unique two-dimensional structure and excellent electrical, mechanical, thermal and optical properties. . The low-cost, high-quality macro-preparation of graphene and the formation of various three-dimensional functional structures are the keys to realize its large-scale application. The existing graphene materials prepared in large quantities are mostly two-dimensional layered structures, and because of the preparation technology, there are a large number of oxygen-containing groups and other residues in the final product, which has a high resistivity an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/184
CPCC01B2204/32C01P2002/72C01P2002/82C01P2004/03C01P2004/04C01P2006/14
Inventor 长世勇黄向东董海勇杜沁伊殷先德毛文峰
Owner 广州巨湾技研有限公司