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Method for producing graphene in batches

A mass production and graphene technology, applied in the field of mass production of graphene, can solve the problems of equipment corrosion, high acid consumption, pollution, etc., and achieve good friction performance

Inactive Publication Date: 2016-08-24
戴加龙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of chemical substance intercalation process consumes a lot of acid, and there are harmful gases such as SOx and NOx or pollution of heavy metal ions in the production process. There are sulfur residues in the product, and the final graphene is prone to defects, and it is harmful to equipment during application. There is corrosion, which reduces the service life of the equipment and increases the production cost

Method used

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  • Method for producing graphene in batches

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The present invention is a kind of method of producing graphene in batches, and the method comprises the following steps:

[0023] S1. Inject the graphite flakes with a purity of more than 98% and a particle size of 30 to 500 μm and the stripping liquid into the ball mill jar, wherein the stripping liquid consists of: 100 parts by weight of water, 30 parts by weight of sodium benzenesulfonate, and cyclopentanediene 4 parts by weight of alkene, 1.5 parts by weight of ferric chloride, and 1 part by weight of silicon carbide. The particle size of the silicon carbide micropowder does not exceed 10 microns. Here, the weight ratio of the graphite flakes and the stripping liquid is 1:6.

[0024] S2. Ball milling for 48 hours, the rotating speed of the ball mill is 2000 rpm / min.

[0025] S3. After the reaction is stopped, the upper layer suspension is discharged into the storage tank through the discharge port, and left to stand for more than 24 hours to obtain the initial pr...

Embodiment 2

[0029] The present invention is a kind of method of producing graphene in batches, and the method comprises the following steps:

[0030] S1. The graphite flakes with a purity of more than 98% and a particle size of 30 to 500 μm and the stripping solution are injected into the ball mill jar, wherein the stripping solution is composed of: 100 parts by weight of water, 35 parts by weight of sodium benzenesulfonate, cyclopenta 3 parts by weight of diene, 1 part by weight of ferric chloride, and 1.5 parts by weight of silicon carbide. The particle size of the silicon carbide micropowder does not exceed 10 microns. Here, the weight ratio of the graphite flakes and the stripping liquid is 1:5.

[0031] S2. Ball milling for 24 hours, the rotating speed of the ball mill is 3000 rpm / min.

[0032] S3. After the reaction is stopped, the upper layer suspension is discharged into the storage tank through the discharge port, and left to stand for more than 24 hours to obtain the initial p...

Embodiment 3

[0036] The present invention is a kind of method of producing graphene in batches, and the method comprises the following steps:

[0037] S1. Inject graphite flakes with a purity of more than 98% and a particle size of 30 to 500 μm and the stripping liquid into the ball mill jar, wherein the stripping liquid consists of: 100 parts by weight of water, 40 parts by weight of lithium benzenesulfonate, and 6 parts by weight of diene, 2 parts by weight of ferric chloride, and 2 parts by weight of silicon carbide. The particle size of the silicon carbide micropowder does not exceed 10 microns. Here, the weight ratio of the graphite flakes and the stripping liquid is 1:4.

[0038] S2. Ball milling for 12 hours, the rotating speed of the ball mill is 5000 rpm / min.

[0039] S3. After the reaction is stopped, the upper layer suspension is discharged into the storage tank through the discharge port, and left to stand for more than 24 hours to obtain the initial product.

[0040] S4. Th...

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Abstract

The invention discloses a method for producing graphene in batches. The method comprises the following steps: S1, injecting graphite flakes and a stripper into a ball-milling tank, wherein the stripper is composed of 100 parts of water, 30-50 parts of benzene sulfonate, 3-6 parts of cyclopentadiene, 1-2 parts of trivalent iron salt and 1-3 parts of a sanding agent; S2, performing ball milling for 4-48 hours, wherein the rotating speed of the ball mill is 1000-2000rpm / min or over; S3, discharging the suspension out of a storage tank after the reaction is ended, and standing; S4, conveying the graphene suspension into a centrifugal machine for centrifuging, taking the supernatant liquid after centrifuging, and performing vacuum filtering, thereby obtaining the filter cake; and S5, washing the filter cake, and performing freeze drying. According to the preparation method, the graphene can be stripped, the equipment is not corroded, and the graphene structure is not damaged.

Description

technical field [0001] The invention relates to the technical field of graphene production, in particular to a method for producing graphene in batches. Background technique [0002] Graphene is a two-dimensional material with good flexibility and electrical properties. What needs to be added is that, strictly speaking, graphene is a single-layer sheet; however, due to the difficulty of preparing single-layer graphene, oligolayer graphene with similar properties is generally also classified into the category of graphene. Inside. [0003] At present, the methods for preparing graphene mainly include: chemical growth method and physical exfoliation method. Compared with the chemical growth method, which is inefficient and not suitable for industrial mass production, the physical exfoliation method mainly uses cheap graphite as a raw material, and applies mechanical force to the graphite crystal to cause the graphite layers to peel off, breaking the van der Waals force betwee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04
Inventor 戴加龙
Owner 戴加龙
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