Method for preparing graphene/metal composite material and three-dimensional graphene

Abstract

The invention belongs to the preparation field of graphene and a composite material of the graphene, and particularly discloses a method for preparing a graphene / metal composite material and three-dimensional graphene. The method for preparing the graphene / metal composite material includes the following steps that a chemical vapor deposition method is adopted for growing the graphene on the surfaces of metal particles; and the metal particles with the graphene being grown on the surfaces are molded to be of a three-dimensional entity structure, and accordingly the graphene / metal composite material is prepared. The method for preparing the three-dimensional graphene includes the specific steps that metal components in the prepared graphene / metal composite material are removed through corrosion with corrosive liquid, and accordingly the three-dimensional graphene can be prepared. By adoption of the method, a graphene / metal composite material product and a three-dimensional graphene material with excellent performance can be prepared; and the method has the advantages of being easy and convenient to operate, short in preparation period, wide in applied range and the like.

Description

technical field

[0001] The invention belongs to the field of graphene and composite material preparation, and more particularly relates to a graphene / metal composite material and a preparation method of three-dimensional graphene. Background technique

[0002] Graphene is a two-dimensional (2D) crystalline material composed of a single layer of carbon atoms. It has extremely excellent electrical, optical, thermal and mechanical properties and an ultra-high specific surface area, making it useful in nanomaterials, bioengineering, fine chemicals, energy It has very important application prospects in scientific fields such as storage. Composite materials prepared from graphene have also attracted much attention because of their improvement in the mechanical, thermal, and electrical properties of the original materials.

[0003] However, the preparation of existing metal-based graphene composites usually uses graphene powder as an additive, and there is a strong interaction for...

Examples

Embodiment 1

[0037] (1) Select Ni particles with an average particle size of 30 μm, put them into a CVD tube furnace, and feed argon as a protective gas; under the conditions of an argon flow of 500 sccm and a hydrogen flow of 100 sccm, the sample is heated to 1000° C. in 50 minutes; Under the conditions of argon flow rate of 500sccm and hydrogen flow rate of 100sccm, the reduction was carried out at 1000 °C for 30 minutes; Graphene is grown, and the growth time is 5 minutes. After the growth, 100 sccm of gaseous hydrogen and 500 sccm of argon gas are continuously introduced, and the temperature is rapidly cooled to room temperature at a rate of 100 ° C per minute, thereby obtaining metal Ni particles with graphene grown on the surface. The number of graphene layers is 3;

[0038] (2) the Ni metal particles with graphene on the surface obtained in the step (1) are loaded into a graphite mold with a diameter of 30 mm, then spark plasma sintering is carried out at 800° C. / 60 MPa, and the tem...

Embodiment 2

[0041] (1) Select Cu particles with an average particle size of 50 μm, put them into a CVD tube furnace, and feed argon as a protective gas; under the conditions of an argon flow of 300 sccm and a hydrogen flow of 50 sccm, the sample is heated to 850° C. in 30 minutes; Under the conditions of argon flow rate of 300sccm and hydrogen flow rate of 50sccm, the reduction was carried out at 850 ° C for 30 minutes; after the insulation was completed, a mixed gas of acetylene, hydrogen and argon was introduced (the gas flow rates were acetylene 10sccm, hydrogen 50sccm and argon 300sccm respectively), and the Graphene is grown, and the growth time is 10 minutes. After the growth, 50 sccm of hydrogen gas and 300 sccm of argon gas are continuously introduced, and the temperature is rapidly cooled to room temperature at a rate of 100 ° C per minute, thereby obtaining the metal Cu particles with graphene grown on the surface. The number of graphene layers is 1;

[0042] (2) The Cu metal pa...

Embodiment 3

[0045] (1) Select Fe particles with an average particle size of 10 μm, put them into a CVD tube furnace, and feed argon as a protective gas; under the conditions of an argon flow of 500 sccm and a hydrogen flow of 100 sccm, the sample is heated to 1000° C. in 50 minutes; Incubate at 1000 ℃ for 10 minutes under the conditions of argon flow rate of 500 sccm and hydrogen flow rate of 100 sccm; after the insulation is completed, a mixed gas of methane, hydrogen and argon (gas flow rates are respectively 30 sccm for methane, 100 sccm for hydrogen and 500 sccm for argon) are introduced to start growth. Graphene, the growth time is 10 minutes, and after the growth, 100 sccm of gaseous hydrogen and 500 sccm of argon gas are continuously introduced, and rapidly cooled to room temperature at a rate of 100 ° C per minute, thereby obtaining the metal Fe particles with graphene grown on the surface, graphite The number of alkene layers is 6;

[0046] (2) the Fe metal particles with graphen...

technical field

[0001] The invention belongs to the field of graphene and composite material preparation, and more particularly relates to a graphene / metal composite material and a preparation method of three-dimensional graphene. Background technique

[0002] Graphene is a two-dimensional (2D) crystalline material composed of a single layer of carbon atoms. It has extremely excellent electrical, optical, thermal and mechanical properties and an ultra-high specific surface area, making it useful in nanomaterials, bioengineering, fine chemicals, energy It has very important application prospects in scientific fields such as storage. Composite materials prepared from graphene have also attracted much attention because of their improvement in the mechanical, thermal, and electrical properties of the original materials.

[0003] However, the preparation of existing metal-based graphene composites usually uses graphene powder as an additive, and there is a strong interaction for...

Examples

Embodiment 1

[0037] (1) Select Ni particles with an average particle size of 30 μm, put them into a CVD tube furnace, and feed argon as a protective gas; under the conditions of an argon flow of 500 sccm and a hydrogen flow of 100 sccm, the sample is heated to 1000° C. in 50 minutes; Under the conditions of argon flow rate of 500sccm and hydrogen flow rate of 100sccm, the reduction was carried out at 1000 °C for 30 minutes; Graphene is grown, and the growth time is 5 minutes. After the growth, 100 sccm of gaseous hydrogen and 500 sccm of argon gas are continuously introduced, and the temperature is rapidly cooled to room temperature at a rate of 100 ° C per minute, thereby obtaining metal Ni particles with graphene grown on the surface. The number of graphene layers is 3;

[0038] (2) the Ni metal particles with graphene on the surface obtained in the step (1) are loaded into a graphite mold with a diameter of 30 mm, then spark plasma sintering is carried out at 800° C. / 60 MPa, and the tem...

Embodiment 2

[0041] (1) Select Cu particles with an average particle size of 50 μm, put them into a CVD tube furnace, and feed argon as a protective gas; under the conditions of an argon flow of 300 sccm and a hydrogen flow of 50 sccm, the sample is heated to 850° C. in 30 minutes; Under the conditions of argon flow rate of 300sccm and hydrogen flow rate of 50sccm, the reduction was carried out at 850 ° C for 30 minutes; after the insulation was completed, a mixed gas of acetylene, hydrogen and argon was introduced (the gas flow rates were acetylene 10sccm, hydrogen 50sccm and argon 300sccm respectively), and the Graphene is grown, and the growth time is 10 minutes. After the growth, 50 sccm of hydrogen gas and 300 sccm of argon gas are continuously introduced, and the temperature is rapidly cooled to room temperature at a rate of 100 ° C per minute, thereby obtaining the metal Cu particles with graphene grown on the surface. The number of graphene layers is 1;

[0042] (2) The Cu metal pa...

Embodiment 3

[0045] (1) Select Fe particles with an average particle size of 10 μm, put them into a CVD tube furnace, and feed argon as a protective gas; under the conditions of an argon flow of 500 sccm and a hydrogen flow of 100 sccm, the sample is heated to 1000° C. in 50 minutes; Incubate at 1000 ℃ for 10 minutes under the conditions of argon flow rate of 500 sccm and hydrogen flow rate of 100 sccm; after the insulation is completed, a mixed gas of methane, hydrogen and argon (gas flow rates are respectively 30 sccm for methane, 100 sccm for hydrogen and 500 sccm for argon) are introduced to start growth. Graphene, the growth time is 10 minutes, and after the growth, 100 sccm of gaseous hydrogen and 500 sccm of argon gas are continuously introduced, and rapidly cooled to room temperature at a rate of 100 ° C per minute, thereby obtaining the metal Fe particles with graphene grown on the surface, graphite The number of alkene layers is 6;

[0046] (2) the Fe metal particles with graphen...

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