CN110098382B - Metal-carbon nanocomposite material in which metal particles are encapsulated, and method for producing same - Google Patents
Metal-carbon nanocomposite material in which metal particles are encapsulated, and method for producing same Download PDFInfo
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- CN110098382B CN110098382B CN201810084921.9A CN201810084921A CN110098382B CN 110098382 B CN110098382 B CN 110098382B CN 201810084921 A CN201810084921 A CN 201810084921A CN 110098382 B CN110098382 B CN 110098382B
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- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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Abstract
The technical gist of the present invention is to provide a metal-carbon nanocomposite material in which metal particles are encapsulated and a method for producing the same, the metal-carbon nanocomposite material comprising: disposing a pair of wires in an organic solvent; and a step of forming metal particles in the metal wire by applying a bipolar pulse dc power supply to the metal wire and forming carbon spheres in the organic solvent by plasma discharge, thereby producing a metal-carbon nanocomposite in which the metal particles are encapsulated inside the carbon spheres. Since the generation of plasma in an organic solvent is utilized without additional addition of chemicals and thus a high-purity metal-carbon nanocomposite can be obtained, and commercialization is facilitated due to simple engineering and high yield. Further, it is also possible to prevent oxidation of the metal particles and thereby maintain the characteristics thereof by encapsulating the metal particles inside the carbon spheres.
Description
Technical Field
The present invention relates to a metal-carbon nanocomposite in which metal particles are encapsulated and a method for manufacturing the same, and more particularly, to a metal-carbon nanocomposite in which metal particles are encapsulated and a method for manufacturing the same, which can obtain a high-purity metal-carbon nanocomposite because an additional chemical agent is not required because plasma is generated in an organic solvent, and which is convenient for commercialization because of simple processes and high yield.
Background
A raw material containing carbon as a main component has excellent mechanical strength, thermal conductivity, electrical conductivity, and chemical stability, and thus can be widely used in various fields such as energy, environment, and electronic raw materials. Such carbon can be formed in various structures, and recently, fullerene (fullerene) and Carbon Nanotube (CNT) composed of hexagonal layer (hexagonal layer) carbon such as graphite (graphite) have been attracting much attention. Fullerene is a molecule in which graphite structures are connected in a substantially spherical shape, and carbon nanotube is a structure in which graphite is circularly rolled with a diameter of a nanometer size, and can exhibit characteristics of a metal or a semiconductor depending on the angle of rolling of graphite and the structure. The carbon of the above fox search can be formed in various structures, and among the various morphologies of the structures, Carbon Nanospheres (CNSs) are one of important raw materials that can be applied to catalyst carriers, anodes of lithium ion batteries, adsorbents, wear-resistant materials, high-strength composite materials, and novel environmentally friendly templates.
However, when a raw material having further improved performance in terms of use properties, i.e., a metal-carbon nanocomposite containing metal in carbon, is used as compared to a raw material using only carbon, the metal particles contribute to more excellent performance in terms of field emission displays, hydrogen storage device assemblies, electrodes, supercapacitors, electromagnetic wave shields, lightweight high-strength application products, and the like. In particular, when the metal particles bonded to carbon are of a nano size, the metal physical properties different from those of conventional metals are exhibited, and the most typical physical properties are changed to decrease of the melting point of the metal. The above-described changes can provide the metal-carbon nanocomposite with physical properties different from those of conventional materials, and thus can provide a wide range of applications using completely new material characteristics. In order to produce the metal-carbon nanocomposite as described above, in the conventional techniques such as "method of forming diamond-like carbon film in korean patent laid-open publication No. 10-2008-0099907", "method of producing carbon-metal nanocomposite using plasma-solution system in korean patent laid-open publication No. 10-2013-0063718", "method of encapsulating carbon material in aluminum using STEP method in korean patent laid-open publication No. 10-1169355", and the like, synthesis of metal-carbon nanocomposite is performed using techniques such as Chemical Vapor Deposition (CVD), hydrothermal treatment (hydrothermal treatment), ultrasonic treatment (ultrasonic treatment), plasma treatment (plasma treatment) and the like.
In particular, in order to synthesize a metal-carbon nanocomposite in which carbon exists on the outside and metal is encapsulated inside the carbon, it is necessary to synthesize metal nanoparticles through a complicated process and then encapsulate the metal nanoparticles inside the carbon, and thus the metal-carbon nanocomposite can be finally obtained. That is, since the process itself requires a plurality of steps (multi processes), it is difficult to commercialize the product and the unit price is increased, and since a reducing agent and various chemical agents (chemical agents) are required in the process of synthesizing the nano-metal particles, the purity (purity) of the complex is reduced and an additional process for removing the above-mentioned substances is required. Further, there are problems in that the metal-carbon mixture ratio and the arrangement structure of the resulting composite are not uniform, and the yield of the metal-carbon nanocomposite is low, so that it is necessary to consume a large manufacturing cost to obtain a specific amount, and it is difficult to realize mass production and industrialization.
Prior art documents
Patent literature
(patent document 1) Korean patent office publication No. 10-2008-0099907
(patent document 2) Korean patent office laid-open patent publication No. 10-2013-0063718
(patent document 3) Korean patent office registration No. 10-1169355
Disclosure of Invention
Technical problem
The present invention provides a metal-carbon nanocomposite in which metal particles are encapsulated, which is capable of obtaining a high purity metal-carbon nanocomposite because of the use of plasma generation in an organic solvent without the need for additional chemical agents, and which is convenient for commercialization because of simple engineering and high yield, and a method for manufacturing the same.
Also, a metal-carbon nanocomposite in which metal particles are encapsulated, which can prevent oxidation of the metal particles by encapsulating the metal particles inside carbon spheres and thereby maintain the characteristics thereof, and a method for manufacturing the same are provided.
Technical scheme
In order to achieve the above object, the present invention provides a method for producing a metal-carbon nanocomposite material in which metal particles are encapsulated, the method comprising: disposing a pair of wires in an organic solvent; and a step of forming metal particles in the metal wire by applying a bipolar pulsed direct current power source (bipolar pulsed direct current power) to the metal wire and forming carbon spheres in the organic solvent by plasma discharge (plasma discharge), thereby producing a metal-carbon nanocomposite in which the metal particles are encapsulated inside the carbon spheres.
Wherein the bipolar pulse DC power supply has a pulse width of 1.5-3.0 μ s, a frequency of 15-20 kHz and a voltage of 1500-2000V, or a pulse width of 2.0-2.5 μ s, a frequency of 15-20 kHz and a voltage of 1500-2000V.
The organic solvent is preferably one having a carbon ring and consisting of Hydrocarbon (HC) in order to allow polymerization of carbon into carbon spheres (carbon balls), and is preferably selected from the group consisting of cyclohexane (cyclohexane) having a saturated ring, benzene (benzone) having an aromatic ring, xylene (xylene), toluene (toluene), and a mixture thereof.
The wire is made of a metal material having a melting point of less than 2000 ℃, and the metal material is preferably selected from the group consisting of gold (Au), platinum (Pt), aluminum (Al), copper (Cu), tin (Sn), lead (Pb), and a mixture thereof.
The diameter of the metal wire is 0.5 to
Preferably, a pair of the wires are arranged at an interval of 1 to 2 mm.
In order to achieve the above object, the present invention also provides a metal-carbon nanocomposite material in which metal particles are encapsulated, the metal-carbon nanocomposite material comprising: the metal particles are encapsulated inside the carbon spheres by applying a bipolar pulsed direct current power source (bipolar pulsed direct current power) to the metal wires to form metal particles in the metal wires by plasma discharge (plasma discharge) and form carbon spheres in the organic solvent.
In order to achieve the above object, the present invention also provides a metal-carbon nanocomposite material in which metal particles are encapsulated, the metal-carbon nanocomposite material comprising: is formed by encapsulating metal particles inside carbon spheres.
Advantageous effects
With the structure of the present invention as described above, it is possible to obtain a metal-carbon nanocomposite with high purity because of no need for additional chemical agents because of the generation of plasma using an organic solvent, and it is convenient to realize commercialization because of simple engineering and high yield.
Further, it is also possible to prevent oxidation of the metal particles and thereby maintain the characteristics thereof by encapsulating the metal particles inside the carbon spheres.
Drawings
Fig. 1 is a process diagram of a method for producing a metal-carbon nanocomposite to which an embodiment of the present invention is applied.
Fig. 2 is a sectional view of an apparatus for manufacturing a metal-carbon nanocomposite.
Fig. 3 is an explanatory view of a synthesis process of the metal-carbon nanocomposite.
Fig. 4 is a schematic graph of the consumption amount of the metal wire and the generation amount of the metal-carbon nanocomposite at different pulse widths.
Fig. 5 is a schematic graph of the amount of metal particles contained on the surface of carbon spheres at different pulse widths.
Fig. 6 is a schematic graph of CV curves of the generated shapes of the metal-carbon nanocomposite at different pulse widths.
Fig. 7 is a schematic graph of CV curves of the generated shapes of the metal-carbon nanocomposite in different wire types.
Fig. 8 is an XRD chart of the metal-carbon nanocomposite.
Fig. 9 is a TEM photograph of the metal-carbon nanocomposite.
Fig. 10 is an EDS map of a metal-carbon nanocomposite.
Detailed Description
The metal-carbon nanocomposite having metal particles encapsulated therein and the method for producing the same to which the embodiments of the present invention are applied will be described in detail with reference to the drawings.
First, as shown in fig. 1, a pair of wires is disposed in an organic solvent (S1).
As shown in fig. 2, in order to realize plasma discharge (plasma discharge), it is necessary to provide a chamber, a pair of electrodes located in the chamber, and a power supply section for applying power to the electrodes. Wherein the chamber is used for storing an organic solvent therein and providing a space required for plasma discharge to occur. A pair of electrodes facing each other are disposed in the cavity, and one wire (metal wire) is disposed at each end of the electrodes, so that the pair of wires are disposed in a line facing each other in the longitudinal direction. The metal wire is immersed in an organic solvent stored in the chamber, and the metal-carbon nanocomposite to which the present invention is applied can be produced by plasma discharge.
The metal wire is a raw material for forming the metal particles, and as the metal wire described above, a raw material having a melting point of less than 2000 ℃ is used, and particularly, a metal raw material having a melting point of less than 1500 ℃ is preferably used. This is because, when a metal having a melting point higher than 2000 ℃ is used, it will be difficult to convert the metal wire into metal particles by plasma discharge. When plasma discharge occurs, the temperature of the metal will rise sharply and melt instantaneously, and the molten metal will be cooled again in the organic solvent and form nano-sized metal particles. However, metals such as tungsten (W) having a melting point exceeding 2000 ℃ are not suitable for use in the present invention because they cannot be instantaneously brought into a molten state when plasma discharge occurs. The raw material suitable for use in the present invention is preferably selected from the group consisting of gold (Au), platinum (Pt), aluminum (Al), copper (Cu), tin (Sn), lead (Pb), and a mixture thereof, but any metal having a melting point of less than 2000 ℃ may be used without limitation.
When the pair of wires are arranged in a row along the longitudinal direction, the wires are preferably arranged so as to be spaced apart from each other by 1 to 2 mm. If the interval between the wires is less than 1mm, a phenomenon in which carbon balls generated between the wires are sandwiched between the wires due to the excessively small interval therebetween may be caused, thereby hindering the generation of subsequent carbon balls and eventually leading to the end of plasma discharge. In addition, if the interval between the wires is greater than 2mm, since the organic solvent is a non-polar solvent, i.e., has no dielectric constant, the interval between the wires is far, which results in that plasma discharge cannot occur. Therefore, the interval between the pair of wires is preferably set to 1 to 2mm which is most suitable for generating plasma discharge.
The diameter of the metal wire is set to 0.5 to
Preferably, the wire diameter is smaller than
A sufficient amount of metal particles required cannot be formed, and an electric field needs to be locally formed at the time of plasma discharge, but when the diameter of the wire is larger than that of the wire
The plasma discharge cannot be generated smoothly due to the dispersion of the electric field.
The organic solvent is a raw material for forming carbon spheres (carbon balls), and in the present invention, an organic solvent having a carbocyclic ring structure is preferably used as the organic solvent with respect to an organic solvent having a linear structure.
As the organic solvent having a ring structure, a solvent having a saturated ring or a solvent having an aromatic ring can be used, and can be selected from the group consisting of cyclohexane (cyclohexane) which is a solvent having a saturated ring, benzene (bezene), xylene (xylene), toluene (tolene) which is a solvent having an aromatic ring, and a mixture thereof. When a linear structure such as pentane (pentane) or hexane (hexane) is used as the organic solvent, although plasma can be normally generated, the carbon sphere (carbon ball) form required in the present invention is not formed, but a plate-shaped carbon structure is formed. The plate-like carbon structure is difficult to encapsulate (encapsulate) the metal particles, but has a form in which the metal particles are contained in the surface thereof, and therefore the object of preventing oxidation of the metal particles in the present invention cannot be achieved. Therefore, it is preferable to perform plasma discharge using an organic solvent capable of forming carbon into a ring structure in the form of carbon spheres.
In addition, in order to easily carry out the present invention by using plasma discharge without separately heating an organic solvent having a saturated ring or an aromatic ring, an organic solvent that can exist in a liquid state at room temperature is used as the organic solvent. In addition, an organic solvent composed of Hydrocarbon (HC) containing only carbon (C) and hydrogen (H) without containing other elements is preferably used as the organic solvent. This is because carbon spheres are not easily generated when other elements such as oxygen (O) are contained. In order to commercialize the present invention, it is preferable to use an organic solvent having low toxicity as the organic solvent, and thus it is not preferable to use a solvent having high toxicity such as phenol (phenol) among aromatic organic solvents.
Therefore, the organic solvent used in the present invention preferably satisfies the conditions of 1) an organic solvent having a saturated ring or an aromatic ring, 2) an organic solvent capable of existing in a liquid state at room temperature, 3) an organic solvent composed of a hydrocarbon, 4) an organic solvent having low toxicity, and the organic solvent satisfying the conditions is preferably selected from the group consisting of cyclohexane, benzene, xylene, toluene, and a mixture thereof.
Next, a metal-carbon nanocomposite encapsulating metal particles is formed by plasma discharge (S2).
When a bipolar pulsed direct current power supply is applied to a pair of metal wires that are installed at both ends of an electrode and immersed in an organic solvent in step S1, a transient plasma discharge as shown in fig. 3 occurs, and a metal-carbon nanocomposite in which metal particles are encapsulated (encapsulated) inside a carbon sphere is formed by the plasma discharge as described above. That is, at the moment of applying power to the wire, the wire enters a high temperature state and is melted, and the melted metal is immediately cooled by the organic solvent and thereby nano-sized metal particles are formed. At the same time, the organic solvent polymerizes (polymerization) the carbon contained in the organic solvent under the action of the plasma discharge. At this time, the carbon spheres are formed by the polymerization as described above, that is, the carbon spheres are formed by surrounding the metal particles formed by the wire disposed at the center, and thus the metal particles are finally encapsulated inside the formed carbon spheres.
As the pulse (pulse), various different waveforms such as a sine wave (sine wave), a triangular wave (triangular wave), and a bipolar wave (bipolar wave) can be used, and in the present invention, a bipolar pulse dc power source for forming a bipolar wave is preferably supplied. The bipolar pulse dc power supply described above can encapsulate the metal particles inside the carbon spheres only when a pulse width (pulse width), a frequency (frequency), and a voltage (voltage) within a specific range are applied.
Specifically, the pulse width of the applied power source is preferably 1.5 to 3.0. mu.s, and particularly preferably in the range of 2.0 to 2.5. mu.s. When the pulse width is 2.0 to 2.5 μ s, the metal-carbon nanocomposite in which the metal particles are completely encapsulated inside the carbon sphere can be obtained in its entirety, and in the range of 1.5 to 3.0 μ s excluding 2.5 μ s, the metal-carbon nanocomposite in which the metal particles are completely encapsulated inside the carbon sphere cannot be obtained in its entirety, but the yield thereof can still be 80% or more. Therefore, if it is not required to obtain a metal-carbon nanocomposite in which all the metal particles are completely encapsulated inside the carbon sphere, the pulse width can be freely selected in the range of 1.5 to 3.0 μ s, but if it is required to obtain a metal-carbon nanocomposite in which all the metal particles are completely encapsulated inside the carbon sphere, the pulse width must be controlled in the range of 2.5 μ s.
The amount of the synthesized carbon spheres is closely related to the pulse width, and when the pulse width is less than 1.5 μ s, all the metal particles cannot be encapsulated in the carbon spheres, and a part of the metal particles may be included on the surface of the carbon spheres. When the metal particles are contained on the surface of the carbon sphere, oxidation may occur due to exposure of the metal particles to the outside and thus cause a problem in that the characteristics of the metal particles are not properly exhibited, and thus the metal particles must be completely encapsulated inside the carbon sphere. Further, when the pulse width is more than 3.0 μ s, a problem of transfer of plasma discharge into arc plasma may be caused. If the arc plasma (arc plasma) state is maintained for a certain period of time, a large amount of current is generated to increase the temperature of the organic solvent, which further causes boiling and evaporation of the organic solvent, thereby not only interrupting the generation of the metal-carbon nanocomposite, but also causing the metal particles melted by the electric power to be not cooled and continuously present in a melted state, thereby eventually causing a problem in that the nano-sized metal particles cannot be generated. When the metal particles cannot be produced, the metal particles cannot be encapsulated in the carbon spheres, and therefore, the metal-carbon nanocomposite to which the present invention is applied cannot be produced. Further, the arc plasma state causes an increase in the sputtering rate of the electrodes, which causes an increase in the inter-electrode spacing and eventually causes a problem that plasma cannot be continued. Therefore, the pulse width of the applied power source is preferably 1.5 to 3.0. mu.s, and particularly preferably in the range of 2.0 to 2.5. mu.s.
The frequency of the applied bipolar pulse dc power source is 15 to 20kHz, which may cause a phenomenon of plasma interruption when the frequency is less than 15kHz, and a phenomenon of a portion of metal particles not encapsulated inside the carbon sphere being included on the surface of the carbon sphere when the frequency is greater than 20kHz due to an increase in the amount of metal wires converted into metal particles, thereby causing a problem that a metal-carbon nanocomposite of a desired shape cannot be produced.
It is preferable that the voltage for realizing the plasma discharge is set to be in the range of 1500 to 2000V, and when the voltage is less than 1500V, there may be a problem that the plasma is interrupted during the plasma discharge because the voltage is insufficient. And when the voltage is more than 2000V, it may cause a problem in that the plasma is transferred into arc plasma. When the metal particles are transferred to the arc plasma, as described above, not only the metal particles cannot be formed smoothly, but also the polymerization cannot be achieved smoothly due to the change in the properties of the carbon, resulting in a problem that carbon spheres having a desired shape cannot be obtained.
The metal-carbon nanocomposite obtained by the above-described method can be extracted from the organic solvent by one or all of classification, washing, filtration, and precipitation, and the residual organic solvent can be completely removed by drying the obtained metal-carbon nanocomposite.
The properties of the metal-carbon nanocomposite formed when different types of organic solvents were used in the process of manufacturing the metal-carbon nanocomposite are described in table 1.
[ TABLE 1 ]
It was found that when benzene was used as the organic solvent, the specific surface area thereof exhibited a very high 241m2In contrast thereto, when the plasma discharge was carried out using xylene as an organic solvent, the specific surface area exhibited a low 75m2(ii) in terms of/g. That is, in the case of using the method according to the present invention, since the metal-carbon nanocomposite having different specific surface areas can be obtained according to the type of the organic solvent used, it is possible to produce the metal-carbon nanocomposite by selecting different organic solvents according to the required specific surface area, and the characteristics as described above are very suitable for commercialization of the present invention. In particular, the metal-carbon nanocomposite can be applied to a lithium ion battery when the specific surface area is low, as well as to a lithium fuel cell or an air cell when the specific surface area is high.
The metal-carbon nanocomposite formed through the steps S1 and S2 as described above is capable of forming carbon spheres through polymerization of carbon present in an organic solvent and metal particles through metal wires, and forming a structure in which no metal particles are contained on the surface of the carbon spheres by encapsulating the metal particles inside the formed carbon spheres. As can be seen from the drawings, the metal-carbon nanocomposite produced by applying the bipolar pulse dc power supply of the present invention as described above has a desired correct shape.
FIG. 4 is a schematic graph of the amount of consumption of the wire (amount of electrode consumption) and the amount of generation of the metal-carbon nanocomposite (amount of synthesized NPs/CNB) at different pulse widths (pulse width). It was found that the consumption amount of the metal wire increased as the pulse width increased and eventually the generation amount of the metal particles increased, and the difference between the generation amount of the metal-carbon nanocomposite and the consumption amount of the metal wire gradually increased because the metal-carbon nanocomposite contains not only the metal particles but also the carbon spheres, and thus the weight of the carbon spheres causes the difference in weight between them to gradually increase. In particular, the greater the amount of carbon spheres relative to the metal particles, the more securely the metal particles are encapsulated inside the carbon spheres rather than on the surface, and therefore, when the pulse width is greater than 1.5 μ s, the effect of the metal particles being completely encapsulated inside the carbon spheres is expected to be achieved.
Fig. 5 is a schematic diagram of the amount of metal particles (amount of loaded nanoparticles) contained on the surface of a carbon sphere under different pulse widths, and when the metal-carbon nanocomposite manufactured by the present invention is put into aqua regia (aqua regia), the amount of metal particles contained on the surface of the carbon sphere can be confirmed by the amount of dissolved metal particles because the metal particles are dissolved in the aqua regia. It was found that the pulse width was approximately 1.5. mu.s, and the amount of metal particles dissolved in aqua regia was gradually decreased. Thereby, it was confirmed that the metal particles can be completely encapsulated into the inside of the carbon sphere when the pulse width is more than 1.5 μ s.
Fig. 6 is a schematic graph of CV curves of the shapes of the metal-carbon nanocomposite produced by using gold (Au) wires at different pulse widths. It was found that an oxidation peak and a reduction peak, which are peaks occurring when the metal particles were oxidized and reduced, occurred at a pulse width of 1.0 μ s, representing a state in which oxidation and reduction reactions occurred due to the metal particles contained on the surface of the carbon sphere. In contrast, the oxidation peak and the reduction peak were extremely small at a pulse width of 1.5 μ s, and no oxidation peak and reduction peak occurred at a pulse width of 2.0 μ s, which means that the metal particles were completely encapsulated inside the carbon sphere.
Fig. 7 is a schematic graph of CV curves of the generated shapes of metal-carbon nanocomposites under different wire types, in which fig. 7a is a graph of the oxidation and reduction peaks occurring at a pulse width of 0.5 μ s of a metal-carbon nanocomposite including nickel (Ni) metal particles, representing that nickel metal ions are present on the surface of the carbon sphere, and the oxidation and reduction peaks do not occur at a pulse width of 2.0 μ s, representing that nickel metal ions are completely encapsulated inside the carbon sphere. Fig. 7b is a case when iron (Fe) metal particles are formed, and fig. 7c is a case when cobalt (Co) metal particles are formed, and it can be found that a graph similar to nickel is exhibited in both cases.
Fig. 8 is an XRD chart of the finally produced metal-carbon nanocomposite, and it can be seen that the metal particles present in the metal-carbon nanocomposite do not show peaks corresponding to nickel oxide, cobalt oxide, and iron oxide, respectively, but show peaks corresponding to nickel, cobalt, and iron, and it can be confirmed that the metal particles are not oxidized. This also means that the metal particles are completely encapsulated inside the carbon spheres.
Fig. 9 is a TEM photograph of the metal-carbon nanocomposite, in which a black dot at the center represents a metal particle and gray surrounding the metal particle represents a carbon sphere. In this way, it was confirmed that in the metal-carbon nanocomposite containing nickel, cobalt, and iron as the metal particles, all the metal particles were encapsulated in the carbon spheres.
Fig. 10 is a photograph showing mapping (mapping) of the metal-carbon nanocomposite by EDS, and it can be seen that the distribution of the black metal particles appearing in the TEM photograph is the same as the distribution of the metal particles and the carbon spheres at the time of mapping.
As described above, the metal-carbon nanocomposite to which the present invention is applied can obtain a high-purity metal-carbon nanocomposite because it does not require additional chemical agents because of the generation of plasma in an organic solvent, and is convenient for commercialization because of simple engineering and high yield. In addition, since the metal particles can be encapsulated in the carbon spheres to prevent the metal particles from being oxidized and thus maintain the characteristics thereof, the carbon spheres can be widely applied to various industrial fields such as lithium ion batteries and air batteries.
Claims (7)
1. A method for producing a metal-carbon nanocomposite material in which metal particles are encapsulated, comprising:
disposing a pair of wires in an organic solvent; and the number of the first and second groups,
a step of forming metal particles in the metal wire by applying a bipolar pulse DC power source to the metal wire and forming carbon spheres in the organic solvent by plasma discharge to produce a metal-carbon nanocomposite in which the metal particles are encapsulated in the carbon spheres,
the bipolar pulse dc power supply described above,
the pulse width is 1.5 to 3.0 mus, the frequency is 15 to 20kHz, and the voltage is 1500 to 2000V.
2. The method for producing a metal-carbon nanocomposite material in which metal particles are encapsulated according to claim 1, wherein:
the bipolar pulse direct-current power supply described above,
the pulse width is 2.0 to 2.5 mus, the frequency is 15 to 20kHz, and the voltage is 1500 to 2000V.
3. The method for producing a metal-carbon nanocomposite material in which metal particles are encapsulated according to claim 1, wherein:
the organic solvent is a mixture of the above-mentioned organic solvents,
is an organic solvent having a carbon ring and consisting of Hydrocarbon (HC) in order to allow carbon to be polymerized into a carbon sphere form.
4. The method for producing a metal-carbon nanocomposite material in which metal particles are encapsulated according to claim 3, wherein:
the above-mentioned organic solvent is a solvent,
selected from the group consisting of cyclohexane having a saturated ring, benzene having an aromatic ring, xylene, toluene, and mixtures thereof.
5. The method for producing a metal-carbon nanocomposite material in which metal particles are encapsulated according to claim 1, wherein:
the metal wire is made of metal raw material with melting point lower than 2000 ℃.
6. The method for producing a metal-carbon nanocomposite material in which metal particles are encapsulated according to claim 5, wherein:
the metal material is selected from the group consisting of gold (Au), platinum (Pt), aluminum (Al), copper (Cu), tin (Sn), lead (Pb), and a mixture thereof.
7. The method for producing a metal-carbon nanocomposite material in which metal particles are encapsulated according to claim 1, wherein:
a pair of the wires are arranged at an interval of 1 to 2 mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810084921.9A CN110098382B (en) | 2018-01-29 | 2018-01-29 | Metal-carbon nanocomposite material in which metal particles are encapsulated, and method for producing same |
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| CN201810084921.9A CN110098382B (en) | 2018-01-29 | 2018-01-29 | Metal-carbon nanocomposite material in which metal particles are encapsulated, and method for producing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110098382A CN110098382A (en) | 2019-08-06 |
| CN110098382B true CN110098382B (en) | 2022-05-24 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102380611A (en) * | 2011-09-09 | 2012-03-21 | 西安近代化学研究所 | Spherical carbon-aluminum composite material |
| CN103586480A (en) * | 2012-08-14 | 2014-02-19 | 南京大学 | One-step microwave preparation method for bimetal/carbon layered composite sphere |
| CN104259455A (en) * | 2014-09-17 | 2015-01-07 | 长沙市宇顺显示技术有限公司 | Online coating production method and device of nanometer copper powder |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102380611A (en) * | 2011-09-09 | 2012-03-21 | 西安近代化学研究所 | Spherical carbon-aluminum composite material |
| CN103586480A (en) * | 2012-08-14 | 2014-02-19 | 南京大学 | One-step microwave preparation method for bimetal/carbon layered composite sphere |
| CN104259455A (en) * | 2014-09-17 | 2015-01-07 | 长沙市宇顺显示技术有限公司 | Online coating production method and device of nanometer copper powder |
Non-Patent Citations (2)
| Title |
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| Graphitic carbon-coated ZrC- and Co-nanoparticles synthesized by pulsed plasma in liquid;Liliang Chen等;《Advanced Materials Research》;20110512;第1978-1982页 * |
| 浅谈电***金属丝制备纳米金属粉末;牟世娟;《中国高新技术企业》;20120331;第75-76页 * |
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