A kind of surface metallized graphene and preparation method thereof

A surface metal, graphene technology, applied in the field of graphene, can solve the problems of poor metal interface wettability, difficult metal matrix composite, agglomeration, etc., to reduce production costs, shorten the process flow, and improve the effect of wettability

Inactive Publication Date: 2021-03-30
NORTHEASTERN UNIV LIAONING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Graphene has a large specific surface area (2600m 2 / g), the unit weight is light, easy to agglomerate, and the wettability of the metal interface is very poor, and the density of graphene is much lower than that of aluminum, magnesium and other metals, and it is easy to float in the metal melt. Compared with carbon fiber, For traditional metal matrix composite reinforcements such as silicon carbide, it is difficult for graphene to be evenly distributed in the metal, and it is difficult to form a good composite with the metal matrix.

Method used

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  • A kind of surface metallized graphene and preparation method thereof
  • A kind of surface metallized graphene and preparation method thereof
  • A kind of surface metallized graphene and preparation method thereof

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preparation example Construction

[0026] This embodiment provides a method for preparing surface metallized graphene by electroplating, the process flow is as follows figure 1 As shown, it specifically includes the following steps:

[0027] s1: Put graphite paper of 4cm*10cm as the anode and platinum wire as the cathode, put it into 98% concentrated sulfuric acid, connect a 1.5-2.5V DC power supply between the anode and the cathode, and react for 15-25min to obtain plug layer graphite;

[0028] Intercalated graphite is used as anode, platinum wire is used as cathode, 40%-60% sulfuric acid is used as electrolyte, connected to 4.5-6.5V DC power supply, and intercalated graphite is slowly put into the electrolyte to obtain graphite oxide;

[0029] After the graphite oxide is filtered and washed by centrifugation, ultrasonic dispersion is carried out for 2-3 hours to obtain a 0.3-0.5 g / L graphene oxide solution.

[0030] s2: Take copper as the anode, titanium as the cathode, copper sulfate solution with a concen...

Embodiment 1

[0034] (1) Take 200ml of 98% concentrated sulfuric acid, put it into a 250ml beaker, take completely dry graphite paper 4cm*10cm as the anode, platinum wire as the cathode, connect it to a 1.5V DC power supply, react for 15min, and take out the intercalated Graphite paper to remove adsorbed sulfuric acid.

[0035] (2) The graphite paper after intercalation is an anode, the platinum wire is a cathode, and 40% sulfuric acid is an electrolyte. Get 200ml of 40% sulfuric acid and put it into a 250ml beaker, insert a 4.5V DC power supply, and put the graphite paper after the intercalation Slowly inserted into the electrolyte, the expanded graphite oxide was collected, filtered several times, washed with deionized water, and then ultrasonically treated.

[0036] (3) With titanium and copper as cathode and anode plates respectively, in 40g / L copper sulfate solution, under DC power supply, the current density is 0.015A / cm 2 , the temperature is 15°C, and a 2 μm copper film is pre-plat...

Embodiment 2

[0041] (1) Take 200ml of 98% concentrated sulfuric acid, put it into a 250ml beaker, take completely dry graphite paper 4cm*10cm as the anode, platinum wire as the cathode, connect it to a 2.5V DC power supply, react for 25min, and take out the intercalated Graphite paper removes adsorbed sulfuric acid.

[0042] (2) The graphite paper after intercalation is the anode, the platinum wire is the negative electrode, and 60% sulfuric acid is the electrolyte. The sulfuric acid of 200ml60% is put into a 250ml beaker, connected to a 6.5V DC power supply, and the graphite paper after the intercalation is Slowly inserted into the electrolyte, the expanded graphite oxide was collected, filtered several times, washed with deionized water, and then ultrasonically treated.

[0043] (3) With titanium and copper as cathode and anode plates respectively, in 70g / L copper sulfate solution, under DC power supply, the current density is 0.030A / cm 2 , the temperature is 30°C, and a 2 μm copper fil...

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Abstract

The invention relates to the technical field of metal-based composite material reinforcement bodies, in particular to a surface-metallized graphene and a preparation method thereof. The preparation method for the surface-metallized graphene comprises the steps that an oxidized graphene dispersing liquid and an activating agent are mixed in an electroplating liquid, electroplating is conducted by connecting titanium as cathode plate and copper as anode plate to direct current so that oxidized graphene is deposited on a titanium plate with surface plated and covered with a layer of copper film in the electroplating process, and a composite plated layer containing copper and oxidized graphene is formed on the titanium plate; and the composite plated layer is collected, and surface-metallizedgraphene is acquired. The surface-metallized graphene comprises a metal film wrapping the surface of the oxidized graphene, and the metal film is a metal copper film. According to the preparation method for the surface-metallized graphene, connecting media do not need to be brought in; the technological process is shortened substantially; the production cost is lowered; meanwhile, raw materials for preparation can be utilized cyclically, no waste liquid is generated, and the method is environment-friendly; besides, wettability between the graphene and metallic matrix is improved; and the problem that graphene is difficult to disperse uniformly in the metallic matrix is solved.

Description

technical field [0001] The invention relates to the technical field of graphene, in particular to a surface metallized graphene and a preparation method thereof. Background technique [0002] Compared with traditional matrix alloys, metal matrix composites have high specific strength, high specific stiffness, high specific modulus, excellent high-temperature mechanical properties and low thermal expansion coefficient, and have very wide applications in aviation, aerospace, automobile, electronics and transportation industries prospect. According to different reinforcements, metal matrix composites can be divided into fiber reinforced metal matrix composites, particle reinforced metal matrix composites and whisker reinforced metal matrix composites. Graphene is the strongest substance known to man, and its density is only 1 / 5 of that of steel, making it the best reinforcement for metal matrix composites. [0003] Graphene has a large specific surface area (2600m 2 / g), the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D3/38C25D5/54C25D7/00
CPCC25D3/38C25D5/54C25D7/00
Inventor 刘奎仁王春新李斌川韩庆陈建设布祖然
Owner NORTHEASTERN UNIV LIAONING
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