KR20130072456A

KR20130072456A - A manufacturing equipment of a graphine and the methode

Info

Publication number: KR20130072456A
Application number: KR1020110139879A
Authority: KR
Inventors: 최대규
Original assignee: 최대규
Priority date: 2011-12-22
Filing date: 2011-12-22
Publication date: 2013-07-02

Abstract

PURPOSE: A graphene manufacturing device and a manufacturing method thereof, which can rapidly manufacture graphene regardless of the size since it is able to manufacture graphene under condition that is not vacuum, are provided. CONSTITUTION: A graphene manufacturing device comprises a fixing means (1) and heating means (2). A graphite catalyst (C) wound in the fixing means in a roll form releases and at the same time reels in at a point located at a predetermined distance. The heating means heats with graphene generating temperature in the process of the graphite catalyst reeling in at the same time as releasing.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a manufacturing method of a graphene,

The present invention relates to a method and an apparatus for producing graphine in which carbon is connected in a hexagonal shape. More particularly, the present invention relates to a method and apparatus for manufacturing graphene, The present invention relates to a manufacturing apparatus and a manufacturing method of a graphene.

In general, graphene refers to a two-dimensional carbon isotope formed by carbon atoms forming a honeycomb lattice structure. These graphens are structurally / chemically stable and have very good electrical properties.

If graphene is rolled up in the form of a tube, it becomes carbon nanotube that is attracting attention as a next-generation electronic device material along with graphene.

Such graphene has been attracting attention as a next-generation transistor and electrode material to replace the existing technology because electrons move not only 100 times faster than single crystal silicon used in semiconductors but 100 times more current can flow than copper.

Conventional methods of obtaining graphene include a micromechanical method and a SiC crystal pyrolysis method.

In the above-described micromechanical method, the scotch tape is attached to the graphitized sample and then peeled off to obtain a graphene in the form of a sheet separated from the graphitization on the scotch tape surface.

In this case, the graphene sheet is not constant in the number of layers, and the shape is not constant in the form of torn paper.

Moreover, there is a disadvantage in that it is extremely difficult to obtain a graphene sheet in a large area.

In the SiC crystal pyrolysis method, when SiC single crystal is heated, SiC on the surface is decomposed to remove Si and graphene is generated by remaining carbon (C).

In this method, SiC single crystals used as starting materials are very expensive, and graphene is very difficult to obtain in large areas.

Recently, a method of forming graphene using a graphitization catalyst has been proposed. In the graphene formation method using a graphitization catalyst, first, a graphitization catalyst is formed on a substrate.

In the above substrate, a silicon substrate or a silicon oxide substrate is used, and the graphitization catalyst is a nickel (Ni) thin film.

Thereafter, when a gaseous carbon source is supplied onto the graphitizing catalyst and heat treatment is performed, graphene is formed on the graphitizing catalyst.

At this time, acetylene (C2H2) or methane (CH4) or the like is used as the carbon source in the gaseous state.

The substrate on which graphene is formed is naturally cooled to grow graphene in a constant array, and the graphene sheet is separated by placing the substrate on which graphene is formed in a graphite catalyst etching solution.

When the nickel thin film is used as the graphitization catalyst in the above, 0.1M HCl aqueous solution is used as an etching solution.

Then, the separated graphene sheet may be transferred to another substrate for device fabrication, and the graphene sheet may be used for another application such as producing a graphene-formed substrate.

In order to obtain high quality graphene in the graphene manufacturing method as described above, high vacuum and high temperature processes of 1000 ° C. to 1400 ° C. must be performed.

That is, it is produced by heating a high temperature in the chamber in a vacuum state.

As a method for producing graphene as described above, it is impossible to obtain graphene having a large area at least as large as a roll, and in particular, it cannot be manufactured quickly, thereby lowering productivity.

In addition, the graphene is produced only in a vacuum state, and thus the working time is long, and in particular, the manufacturing area of the graphene is determined by the limitation of the working space of the chamber, so that the graphene having a larger area than the working space of the chamber cannot be obtained. There was this.

The present invention has been proposed in order to solve the conventional problems as described above, the object of the present invention can be produced quickly in the form of a roll, it is possible to economically produce graphene, especially in an environment that is not in a vacuum state The present invention provides a graphene manufacturing apparatus and a method of manufacturing the graphene, which are capable of rapidly manufacturing graphene without being limited in size (area).

Graphene production apparatus of the present invention for achieving the object of the present invention as described above is a fixing means to be wound at a position separated by a predetermined distance at the same time while the graphite catalyst is wound in a roll form, the graphite catalyst It is characterized in that it comprises a heating means to be heated to a temperature such that the graphene is formed in the process of winding and unwinding at the same time.

The fixing means may include a winding roll on which a graphitization catalyst is wound, a recovery roll which is recovered while the graphite catalyst is unwound from the winding roll, and a fixed plate on which the winding roll and the recovery roll are fixed to be rotated. .

Between the winding roll and the recovery roll is characterized in that a pair of feed rollers are arranged so that the graphitization catalyst is aligned and transported.

The conveying rollers may include a power transmitting member that is axially coupled to the fixing plate and receives a rotational force from the shaft.

A rotating plate for fixing the winding roll and the recovery roll is axially coupled to the fixing plate of the fixing means, and a power transmitting member is provided on the rotating plate to receive a rotational force.

The fixing means is provided with a rotating means for transmitting power to the power transmission member to rotate the take-up roll, recovery roll and the transfer roller.

The rotation means includes a motor, a transmission for shifting a rotational force generated by the motor, and a driving member that is rotated to receive rotational force from the transmission and is connected to transmit power to the power transmitting member.

The heating means is characterized in that it is provided to be located in the interval between the conveying rollers.

And the heating means comprises a laser generator adapted to emit a laser beam of a high temperature.

The heating means is made of a carbon fiber heating body adapted to generate heat by receiving electricity.

The heating means is characterized in that the heating portion for heating the material to the body of the tungsten material to generate heat generated by the power is made of a heating body that can be locally heated as the width gradually decreases toward the tip. .

The heating means is located between the transfer rollers, respectively provided on both sides of the graphite catalyst before and after heating both sides of the graphite catalyst, characterized in that to form graphene on each of the front and rear sides of the graphite catalyst, respectively. do.

The heating means is characterized in that it is provided in the work area in which a portion of the graphite catalyst is separated and separated by an air curtain.

The work area is characterized in that the composition is formed in a gaseous carbon atmosphere.

The work area is characterized in that the heating means has a space provided inside the upper and lower left and right ends are formed into a working area cylinder to be separated from the outside by discharging the inert gas toward the graphite catalyst side.

The graphene manufacturing method of the present invention for achieving the object of the present invention as described above is that the graphitization catalyst wound in the form of a roll is released while being locally heated in the gaseous carbon atmosphere working area to form graphene It features.

The graphitization catalyst in which the graphene is formed is wound in a roll form to be recovered, and is characterized in that it is naturally cooled during recovery.

Graphene manufacturing apparatus and method for producing the graphene of the present invention for achieving the object of the present invention as described above is the temperature at which the graphene is produced while the graphite catalyst wound in the form is wound at a position away from the predetermined distance at the same time (1000) To 1400 degrees), so that the graphene is formed, thereby allowing the graphene to be manufactured in a non-vacuum environment, thereby having an effect of rapidly producing graphene without being limited in size (area). .

1 is a plan view schematically showing a graphene manufacturing apparatus according to an embodiment of the present invention.
2 is an enlarged view illustrating an enlarged view of main parts of the embodiment;
3 is a front view showing the front of the graphene manufacturing apparatus of the present embodiment.
Figure 4 is a plan view showing a state of use of the graphene manufacturing apparatus of the present embodiment,
5 and 6 is a schematic illustration showing several examples of heating means applied to the apparatus for producing graphene of this embodiment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an apparatus and method for manufacturing a graphene according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The embodiments of the present invention may be modified into various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This embodiment is provided to more fully describe the present invention to those skilled in the art. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. Detailed descriptions of well-known functions and constructions which may be unnecessarily obscured by the gist of the present invention are omitted.

1 to 4 is a view showing a graphene manufacturing apparatus according to an embodiment of the present invention, the graphene manufacturing apparatus according to the embodiment is unwinding in a state in which the graphite catalyst (C) wound in a roll form At the same time, the fixing means (1) to be wound at a distance away from the predetermined distance, and the heating means (2) to be heated to a temperature such that the graphene is formed in the process of winding up simultaneously with the release of the graphite catalyst (C) It is made to include.

That is, the graphitization catalyst (C) is released from the fixing means (1) and at the same time by heating means (2) one or both sides are heated to a heating temperature (production temperature of graphene) of 1000 ~ 1400 ℃ to produce graphene Done.

And, the fixing means (1) is a recovery roll (4) is recovered while winding the graphite roll (3) and the graphite catalyst (C) unwound from the winding roll (3) is wound, The winding roll 3 and the recovery roll 4 comprises a fixed plate 5 is fixed to rotate.

That is, since the graphitization catalyst (C) is formed in a roll form to perform a graphene manufacturing process, it is possible to finally obtain a large area roll form graphene.

In addition, between the winding roll 3 and the recovery roll 4, a pair of transfer rollers 6 are arranged such that the graphite catalyst C is aligned and transported.

That is, the graphite catalyst (C) wound on the take-up roll (3) is to be transferred to the recovery roll (4) through the transfer roller (6), the expanded state of the graphite catalyst (C) wound in a roll form According to the implementation, it is possible to perform the formation of graphene at the site where the graphite catalyst (C) is unfolded.

In addition, the transfer rollers 6 are axially coupled to the fixed plate 5, the shaft is provided with a power transmission member 7 to receive a rotational force, and the fixed plate 5 of the fixing means 1 Rotating plate 8 is fixed to the winding roll 3 and the recovery roll 4, the rotating plate 8 is provided with a power transmission member 7 to receive the rotational force.

Therefore, the take-up roll 3, the recovery roll 4 and the transfer roller 6 may simultaneously rotate in the direction in which the graphite catalyst C is transferred from the take-up roll 3 to the recovery roll 4 and wound. It is supposed to be.

In addition, the fixing means 1 is provided with a rotating means for transmitting power to the power transmission member 7 to rotate the take-up roll 3, the recovery roll 4 and the transfer roller (6).

Therefore, the graphite roll (C) is recovered from the take-up roll (3) of the take-up roll (3), the recovery roll (4) and the transfer rollers (6) by the rotating means on the fixing means (1). By simultaneously rotating in the winding direction, it is possible to secure the unfolded portion of the graphitization catalyst (C), thereby obtaining a work area for forming graphene.

The rotation means includes a motor 9, a transmission 10 configured to shift the rotational force generated by the motor 9, and a rotational force applied from the transmission 10 to rotate the power transmission member. It is preferable that the drive member 11 is configured to be connected to transmit power to (7), but is not limited thereto. Among the techniques well known in the art, the power transmission members 7 may be simultaneously rotated in the same direction. It is enough if it has a configured configuration.

In addition, the heating means 2 is provided to be located at intervals between the transfer rollers (6).

That is, when the graphitization catalyst (C) is moved while being unwound by the recovery roll (4) while being wound on the take-up roll (3), the heating means (at intervals between the transfer rollers 6, which are moving portions in a straight line shape) 2) is provided to locally form the graphitization catalyst (C) on one side or both sides, thereby forming graphene.

In the above, the heating means 2 may be made of a laser generator to emit a high-heat laser beam, as shown in Figure 6 may be made of a carbon fiber heating element to generate heat by receiving electricity, as shown in Figure 5 As described above, the heating part for heating the material with the body of tungsten material which generates heat by being supplied with power may be made of a heating body configured to locally heat the width of the tungsten material gradually decreases toward the tip.

Such heating means (2) is located between the transfer rollers (6), respectively provided on both sides of the graphite catalyst (C) before and after both sides of the graphite catalyst (C) by heating the graphite catalyst (C It may be provided to form graphene on each of the front and rear sides of the), in this case, as graphene is formed on both sides of the graphitization catalyst (C), thereby increasing the graphene formation rate.

In the graphene manufacturing apparatus of the present embodiment, the heating means 2 is provided in a work area in which a portion of the graphitization catalyst C is separated and separated by an air curtain 12, and the work area includes a gas. It is formed in the carbon atmosphere of the state.

Therefore, as the graphene is formed in the carbon atmosphere in the gaseous state in the working area spatially separated from the outside by the air curtain 12, it is possible to smoothly prepare the graphene by preventing contact with the outside air (particularly oxygen). have.

Most preferably, the gaseous carbon is made of methane gas (CH ₄ ₎ .

The work area has a space having the heating means 2 provided therein, and at the upper, lower, left, and right ends thereof, an inert gas is discharged (air curtain 12) to the graphite catalyst (C) to be separated from the outside. It is formed by (13).

That is, the work is made in the space of the work area cylinder 13 provided with the air curtain 12, so that the work space is stably formed without having a separate chamber.

Most preferably, the inert gas is made of nitrogen (N ₂ ) gas.

Therefore, when manufacturing graphene using the graphene manufacturing apparatus of the present embodiment made as described above, the graphitization catalyst (C) wound in a roll form is released while localized in the working area of the gaseous carbon atmosphere graphene Fins are formed, and the graphitization catalyst (C) in which the graphene is formed is wound in a roll form to be recovered and naturally cooled upon recovery.

As a result, the graphitization catalyst (C) is heated at a temperature (1000 to 1400 degrees) at which graphene is generated while being wound at a position separated by a predetermined distance at the same time as the annealing, thereby forming an graphene. By allowing the production of graphene at, it is possible to manufacture graphene quickly without being limited in size (area).

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory only and are not to be construed as limiting of the invention. You can see that it is possible. Therefore, it is to be understood that the present invention is not limited to the above-described embodiments. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims. It is also to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

1: fixing means 2: heating means
3: winding roll 4: recovery roll
5: fixed plate 6: feed roller
7: power transmission member 8: rotating plate
9: motor 10: transmission
11 driving member 12 air curtain
13: working area cylinder C: graphitization catalyst

Claims

A fixing means for winding the graphitization catalyst at a position spaced apart from the graphitization catalyst while being unwound in a roll form;
Apparatus for producing graphene characterized in that it comprises a heating means for heating to a temperature at which the graphene is generated in the process of winding up the graphitization catalyst at the same time unwinding.

The method of claim 1,
The fixing means includes a winding roll on which a graphitization catalyst is wound, a recovery roll which is recovered while the graphite catalyst unwinded from the winding roll is wound, and a fixed plate on which the winding roll and the recovery roll are fixed to be rotated. Graphene manufacturing apparatus.

The method of claim 2,
Wherein a pair of conveying rollers are provided between the take-up roll and the take-off roll so that a graphitizing catalyst is aligned and conveyed.

The method of claim 3,
Wherein the conveying rollers are provided with a power transmitting member which is axially coupled to the fixing plate and receives a rotational force from the shaft.

The method of claim 1,
Wherein a rotating plate for fixing the winding roll and the recovery roll is axially coupled to the fixing plate of the fixing means, and a power transmitting member for receiving rotational force is provided on the rotating plate.

The method according to claim 4 or 5,
Wherein the chamber is provided with rotation means for transmitting power to the power transmitting member to rotate the take-up roll, the take-up roll and the conveying rollers.

The method according to claim 6,
Wherein the rotation means includes a motor, a transmission for shifting the rotational force generated by the motor, and a driving member connected to rotate the rotational force received from the transmission to transmit power to the power transmitting member. .

The method of claim 1,
The heating means is a graphene manufacturing apparatus, characterized in that provided to be positioned in the interval between the conveying rollers.

The method of claim 1,
Wherein the heating means comprises a laser generator adapted to emit a laser beam of a high temperature.

The method of claim 1,
Wherein the heating means comprises a carbon fiber heating element adapted to generate heat by receiving electricity.

The method of claim 1,
The heating means is a body of tungsten that generates heat by receiving power, and the heating portion for heating the material is formed of a heating body which is gradually heated to a smaller width toward a front end thereof so as to be locally heated. Manufacturing device for graphene.

The method of claim 1,
The heating means is located between the transfer rollers, respectively provided on both sides of the graphite catalyst before and after heating both sides of the graphite catalyst, characterized in that to form graphene on each of the front and rear sides of the graphite catalyst, respectively. Graphene manufacturing apparatus.

The method of claim 1,
The heating means is a graphene manufacturing apparatus, characterized in that provided in the working area in which a portion of the graphite catalyst is separated by an air curtain.

The method of claim 13,
Graphene manufacturing apparatus, characterized in that the work area is composed of a carbon atmosphere of the gas state.

The method of claim 13,
The work area is a graphene manufacturing apparatus, characterized in that the heating means has a space provided inside the upper and lower left and right ends are formed into a working region to be separated from the outside by discharging the inert gas to the graphite catalyst side.

The graphene production method of the graphene characterized in that the graphene catalyst is wound in the form of a roll and is locally heated to a temperature at which the graphene is formed in the working area of the gaseous carbon atmosphere to form graphene.

17. The method of claim 16,
Graphite is formed in the graphitization catalyst is formed in the roll to recover the graphene, characterized in that the graphene is characterized in that the natural cooling to recover.