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Nickel-coated graphene and preparation method thereof

A graphene and nickel coating technology, which is applied in chemical instruments and methods, liquid chemical plating, coating, etc., can solve the problems of limited practical application fields, failure to meet the application requirements of conductive powder, and high cost of graphene. Achieve the effect of improving conductive shielding, reducing application cost and improving performance

Pending Publication Date: 2022-07-29
武汉北辰星高新材料科技有限公司
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Problems solved by technology

[0002] With the advancement of science and technology, the application of conductive and heat-conducting materials in the fields of electronics, science and technology, communications, and military industry is increasing. limit
[0003] Chinese patent CN201410246298.4 discloses copper composite conductive powder coated with carbon layer of graphene structure and its preparation method, which needs to be reacted at a high temperature above 100°C. The resistance of copper-coated graphene reaches several hundred ohms, up to Less than the application requirements of conductive powder in 5G technology

Method used

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preparation example Construction

[0057] A second aspect of the present invention provides a method for preparing nickel-coated graphene, comprising the following steps:

[0058] S1. Surface treatment of graphene;

[0059] S2. adding nickel salt, complexing agent, carboxyl compound, stabilizer and accelerator into the reactor;

[0060] S3. the temperature of the reactor is heated up, and a carboxyl compound and a nickel salt solution are added;

[0061] S4. add the graphene treated in S1 in the reactor, add stabilizer, accelerator;

[0062] S5. adding the reducing agent to the reaction kettle, and stirring for 0.1-5h;

[0063] S6. The solution is filtered and dried to obtain nickel-coated graphene.

[0064] In one embodiment, the preparation method of the nickel-coated graphene includes the following steps:

[0065] S1. Rinse and filter graphene with inorganic acid and water;

[0066] S2. adding nickel salt, complexing agent, carboxyl compound, stabilizer and accelerator into the reactor;

[0067] S3. th...

Embodiment 1

[0080] A nickel-coated graphene, in parts by weight, the raw material comprises the following components: 50 parts of graphene, 350 parts of nickel sulfate, 350 parts of potassium sodium tartrate, 30 parts of tartaric acid, 300 parts of citric acid, 15 parts of hydrazine hydrate, sulfur 20 parts of urea and 5 parts of sodium fluoride.

[0081] A preparation method of nickel-coated graphene, comprising the following steps:

[0082] S1. add 50 parts of reduced graphene oxide in the container, wash 30min with 20% hydrochloric acid 100ml with mass fraction, then filter with distilled water 500ml for 3 times to obtain graphene;

[0083] S2. 150 ml of nitric acid with a mass fraction of 5% was added to the graphene, and after standing for 30 minutes, the graphene was washed with distilled water, and the graphene was washed until neutral and filtered for use.

[0084] S3. add 15L of distilled water in the reactor, add 300 parts of nickel sulfate, 350 parts of potassium sodium tartra...

Embodiment 2

[0098] A nickel-coated graphene, in parts by weight, the raw material comprises the following components: 50 parts of graphene, 350 parts of nickel sulfate, 280 parts of potassium sodium tartrate, 30 parts of tartaric acid, 300 parts of citric acid, 15 parts of hydrazine hydrate, sulfur 20 parts of urea and 5 parts of sodium fluoride.

[0099] A preparation method of nickel-coated graphene, comprising the following steps:

[0100] S1. add 50 parts of reduced graphene oxide in the container, wash 30min with 20% hydrochloric acid 100ml with mass fraction, then filter with distilled water 500ml for 3 times to obtain graphene;

[0101] S2. 150 ml of nitric acid with a mass fraction of 7% was added to the graphene, and after standing for 30 minutes, the graphene was washed with distilled water, and then washed until neutral and filtered for use.

[0102] S3. add 15L distilled water in the reactor, add 300 parts of nickel sulfate, 280 parts of potassium sodium tartrate, 300 parts o...

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Abstract

The invention belongs to the technical field of composite materials, and particularly relates to nickel-coated graphene and a preparation method thereof. The nickel-coated graphene raw material is prepared from the following components: 30 to 80 parts of graphene, 7.5 to 20 parts of inorganic acid, 200 to 500 parts of nickel salt, 200 to 500 parts of complexing agent, 200 to 500 parts of carboxyl compound, 10 to 30 parts of reducing agent, 5 to 40 parts of stabilizing agent and 0.5 to 10 parts of accelerant; the nickel-coated graphene prepared by the method disclosed by the invention has the dual characteristics of low density and conductive shielding. According to the nickel-coated graphene prepared by the method disclosed by the invention, the application field of the graphene is expanded; according to the nickel-coated graphene prepared by the method disclosed by the invention, the application cost is greatly reduced and the performance of the product is improved while the conductive shielding property of the product is improved; the nickel-coated graphene prepared by the method disclosed by the invention has high stability.

Description

technical field [0001] The invention belongs to the technical field of composite materials, in particular to a nickel-coated graphene and a preparation method thereof. Background technique [0002] With the advancement of science and technology, the application of electrical and thermal conductive materials in electronics, technology, communications, military industry and other fields is increasing, and graphene has also been applied in the above fields. Due to the high cost of graphene, the practical application field is limited limit. [0003] Chinese patent CN201410246298.4 discloses a graphene-structured carbon layer-coated copper composite conductive powder and a preparation method thereof. The reaction needs to be carried out at a high temperature above 100°C, and the resistance of copper-coated graphene reaches several hundred ohms, up to Less than the application requirements of conductive powder in 5G technology. [0004] It is a technical problem to be solved at ...

Claims

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Application Information

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IPC IPC(8): H05K9/00C23C18/16C23C18/34C01B32/194B82Y30/00B82Y40/00
CPCH05K9/0088C01B32/194C23C18/34C23C18/1639B82Y30/00B82Y40/00
Inventor 鞠士鲜
Owner 武汉北辰星高新材料科技有限公司
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