WO2015026181A1 - 그래핀의 개질 방법 및 장치 - Google Patents
그래핀의 개질 방법 및 장치 Download PDFInfo
- Publication number
- WO2015026181A1 WO2015026181A1 PCT/KR2014/007785 KR2014007785W WO2015026181A1 WO 2015026181 A1 WO2015026181 A1 WO 2015026181A1 KR 2014007785 W KR2014007785 W KR 2014007785W WO 2015026181 A1 WO2015026181 A1 WO 2015026181A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- materials
- graphene
- reforming
- carbon dioxide
- carbon
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/182—Graphene
- C01B32/194—After-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
- B01J19/245—Stationary reactors without moving elements inside placed in series
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00008—Controlling the process
- B01J2208/00539—Pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/02—Processes carried out in the presence of solid particles; Reactors therefor with stationary particles
- B01J2208/023—Details
- B01J2208/024—Particulate material
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2204/00—Structure or properties of graphene
- C01B2204/20—Graphene characterized by its properties
- C01B2204/22—Electronic properties
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2204/00—Structure or properties of graphene
- C01B2204/20—Graphene characterized by its properties
- C01B2204/32—Size or surface area
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
Definitions
- the present invention relates to a method and apparatus for reforming graphene, and more particularly, to a method and apparatus for reforming graphene using carbon dioxide.
- Graphene is a material arranged in a form having a hexagonal planar structure in which carbon atoms of graphite, a three-dimensional structural carbon allotrope naturally existing in nature, are in the form of a two-dimensional sheet. Graphene's carbon atoms form sp 2 bonds and form a flat sheet with a single atom thickness.
- Graphene has very good electrical and thermal conductivity, and its physical properties such as excellent mechanical strength, flexibility, elasticity, quantized transparency according to thickness, and high specific surface area can be explained by the unique bonding structure of atoms present therein. Can be. Three of the four outermost electrons of carbon constituting the graphene form a sp 2 common orbital to form a sigma bond, and one remaining electron forms a pi bond with surrounding carbon atoms to form a hexagonal two-dimensional structure. Therefore, graphene has a different band structure than other carbon allotropees, and shows excellent electrical conductivity because there is no band gap. However, at the Fermi level, the graphene is a semimetal material with a state density of 0, which can easily change its electrical properties depending on doping. It may be.
- a method for preparing graphene As a method for preparing graphene, a method of peeling a graphene monolayer from a graphite sheet using an adhesive tape (Scotch-tape method or Peel off method), chemical vapor deposition, and silicon carbide substrate (SiC) phase Epitaxial growth method, heat exfoliation graphite (Thermal exfoliation), chemical reduction method (Chemical reduction) and the like are being studied.
- the chemical reduction method is capable of mass production, economical, there is an advantage that can easily introduce a variety of functional groups in the graphene sheet.
- a reducing agent such as hydrazine must be used for the deoxygenation of graphene oxide.
- Most of these reducing agents have high risk of corrosiveness, explosiveness, and human toxicity, and the graphene produced is free from impurities.
- the electrical conductivity can be lowered.
- each layer of graphene may be recombined after the above reduction process, and it is difficult to effectively control the function of graphene because it is difficult to control the size of graphene.
- the present invention provides a method and apparatus for modifying graphene that can obtain graphene having a desired crystal size while undergoing an economical and low risk process using carbon dioxide.
- the present invention comprises the steps of injecting carbon dioxide in a liquid state to the reactor containing the graphene;
- the carbon dioxide has a silver degree of 20 to 50 ° C and 73 to Reforming the graphene by raising and raising the pressure at a pressure of 200 atm; Depressurizing and cooling; And recovering the decompressed graphene through a recovery tank filled with deionized water.
- the present invention at a temperature of 20 to 50 ° C and a pressure of 73 to 200 atm, the first reforming reactor for performing a first reforming reaction of graphene using carbon dioxide; A carbon dioxide injection device for injecting carbon dioxide into the first reforming reactor; A raw material injection device for injecting graphene into the first reforming reactor; A first depressurizer connected to a rear end of the first reforming reactor; And a recovery tank connected to a rear end of the first depressurizer and recovering the graphene in a state in which deionized water is filled.
- FIG. 1 is a view showing a graphene reforming apparatus according to an embodiment of the present invention by way of example.
- Figure 2 shows the XRD measurement results of the graphene obtained in Example 1, Example 1 of the present invention.
- Figure 3 is a schematic diagram showing a simplified state of the graphene modification according to an embodiment of the present invention.
- Figure 4 is an SEM image of the graphene obtained in Example 1, Example 2 and Comparative Example 1 of the present invention.
- Example 5 is a TEM image of the graphene obtained in Example 1, Example 2 and Comparative Example 1 of the present invention. [Specific contents to carry out invention]
- Graphene reforming method of the present invention comprises the steps of injecting carbon dioxide in a liquid state in the reaction vessel containing the graphene; Reforming graphene by raising and raising the carbon dioxide at a temperature of 20 to 50 ° C. and a pressure of 73 to 200 atm; Depressurizing and sensing; And recovering the decompressed graphene through a recovery tank filled with denitrated water.
- the graphene reforming apparatus of the present invention comprises a first reforming reaction reactor for proceeding with the first reforming reaction of graphene using carbon dioxide at a temperature of 20 to 50 ° C and a pressure of 73 to 200 atm; A carbon dioxide injection device for injecting carbon dioxide into the first reforming reactor; A raw material injection device for injecting graphene into the first reforming reactor; A first depressurizer connected to a rear end of the first reforming reactor; And a recovery tank connected to a rear end of the first depressurizer and recovering the graphene in a state in which deionized water is filled.
- first and second are used to describe various components, and the terms are used only for the purpose of distinguishing one component from other components.
- Graphene reforming method comprises the steps of injecting carbon dioxide in a liquid state in the reaction vessel containing the graphene; Reforming graphene by raising and raising the carbon dioxide at a temperature of 20 to 50 ° C. and a pressure of 73 to 200 ata; Depressurizing and cooling; And recovering the decompressed graphene through a recovery tank filled with deionized water.
- the graphene reforming method comprises the steps of raising the temperature and pressure; And the step of depressurizing and forcing can be repeated two or more times, and may further include the step of recovering to reuse the carbon dioxide discharged from the depressurizing and cooling step.
- the recovered carbon dioxide can be reintroduced into the liquid graphene reforming reaction after it has been sensed, and this process can reduce the amount of carbon dioxide discharged out of the reactor, thereby reducing the generation of greenhouse gases that have a significant impact on global warming. have.
- the modified graphene may be a graphene sheet or graphene particles.
- Graphene sheet refers to a carbon structure having a sheet shape by forming a single layer as a structure separated from graphite, and graphene particles refer to a carbon structure in which the graphene sheets are stacked together.
- the graphene is a graphene platelet, graphene nanoplatelets, graphene oxide, graphite, graphite oxide, graphite nanoplatelets, expanded graphite, diamond, fullerene, carbon black, It may be made from activated carbon, charcoal, carbon nanoribbons, carbon nanowires, carbon nanoclays, carbon nanoleubes, pitch-based carbon fibers, carbon nanofibers, carbon glass fibers, asphalt, and combinations thereof.
- the precursor when the precursor is graphite, and graphene is prepared using a chemical reduction method, the precursor may be prepared by the following method.
- the graphite is treated with a strong acid such as sulfuric acid, nitric acid, or hydrochloric acid, and a peroxide oxidant such as permanganate, bicrates, and chlorate salts to obtain graphite oxide.
- a strong acid such as sulfuric acid, nitric acid, or hydrochloric acid
- a peroxide oxidant such as permanganate, bicrates, and chlorate salts
- the graphite oxide thus produced is a form in which carbon, which is a major component of graphite, is oxidized in the graphite, and functional groups such as epoxy, carboxyl, carbonyl, and hydroxyl groups may exist. It can be easily separated into graphene oxide.
- graphene oxide exfoliated from the graphite oxide in the dispersed mixture is in a state of almost losing the properties of the graphene
- a method of reducing the graphene oxide is required.
- graphene oxide may be reduced to graphene again by treating a powerful reducing agent such as hydrazine, or graphene oxide may be reduced to graphene by treating supercritical fluid with water or carbon dioxide.
- the reduced graphene has a significantly smaller number of graphene sheets laminated than the original graphite, and may be in the form of a graphene sheet having a single layer structure, but the graphene sheets may still be stacked in several layers. It may be.
- the reduction in the graphene oxide is not completely done, it may still have several kinds of functional groups on the graphene surface.
- the graphene of a multi-layered structure produced by a number of methods at a specific temperature and a certain pressure range, by treating with carbon dioxide in a form of high dispersibility without a reduction in physical properties such as electrical conductivity It may be modified, the size of the graphene crystal particles may be adjusted by adjusting the number of subcritical or supercritical carbon dioxide treatment and the treatment process.
- the modified graphene is composed of barrier materials, lightweight materials, energy, batteries, electronics, electricity, semiconductors, steel, displays, home appliances, mobile phones, nano industries, bio, polymer composites, metal composites, paints, pastes, inks, water treatment, Wastewater Treatment, Antistatic Material, Electrostatic Dissipation Material, Conductive Material, Electromagnetic Wave Shielding Material, Electromagnetic Wave Absorber, RF (Radio Frequency) Absorber, Solar Cell Material, Fuel Sensitive Battery (DSSC) Electrode Material, Electric Device Material, Electronic Device Material , Semiconductor device materials, optoelectronic device materials, notebook parts materials, computer parts materials, memory devices, mobile phone parts materials, PDA parts materials : PSP parts materials, game machine parts materials, housing materials, transparent electrode materials, opaque electrode materials, field emission Field emission display (FED) materials, back light unit (BLU) materials, liquid crystal display (LCD) materials, plasma display panels (PDP) anel) materials, light emitting diode (LED) materials, touch
- Graphene reforming apparatus comprises a first reforming reactor for performing a first reforming reaction of the graphene using carbon dioxide at a temperature of 20 to 50 ° C and a pressure of 73 to 200 atm; Carbon dioxide in the first reforming reactor.
- a carbon dioxide injection device for injecting A raw material injection device for injecting graphene into the first reforming reactor; A first depressurizer connected to a rear end of the first reforming reactor; And a recovery tank connected to a rear end of the first depressurizer and recovering the graphene in a state in which deionized water is filled.
- the graphene reforming device is connected to the rear end of the first depressurizer, at a temperature of 20 to 50 ° C and a pressure of 73 to 200 atm, the second reforming of graphene using carbon dioxide A second reforming reaction mixture to proceed with the reaction; And a second depressurizer connected between the rear end of the second reforming reactor and the front end of the recovery tank.
- the graphene reforming device may further include a carbon dioxide cooler connected to the front of the carbon dioxide injection device, the carbon dioxide in the liquid state.
- the graphene reforming apparatus may further include a carbon dioxide storage tank connected to the front of the carbon dioxide each and storing carbon dioxide and supplying carbon dioxide to the carbon dioxide cooler. .
- the graphene reforming apparatus is connected to the rear end of the recovery tank, it may further include a carbon dioxide circulation indenter for the purpose of reusing the carbon dioxide discharged from the recovery tank. .
- FIG. 1 is a diagram illustrating an apparatus for performing a graphene reforming method according to an embodiment of the present invention by way of example.
- the graphene reforming apparatus includes a carbon dioxide storage tank 11 storing carbon dioxide, which is reactionary carbon dioxide, a carbon dioxide pelletizing agent 12 that treats carbon dioxide in a liquid state, and removes carbon dioxide.
- a reformer 15 is connected to the rear end of the reforming reactor 15 and the second reformer 15, and a recovery tank 16 connected to the rear end of the second depressor 21, and recovering the graphene. It may include a carbon dioxide circulation separator 18 that is adapted to reuse the carbon dioxide used in the reforming reaction.
- graphene is introduced into the first reforming reactor 14 as a raw material for reforming reaction from the raw material injection device 10.
- the method of injecting there is no particular limitation on the method of injecting, and the graphene to be added may also be used on the market without any special limitation.
- the graphene is a graphene platelet, graphene nanoplatelet, graphene oxide, graphite, graphite oxide, graphite nanoplatelet, expanded nibble, diamond, fullerene, carbon black , Activated carbon, charcoal, carbon nanoribbons, carbon nanowires, carbon nanoclays, carbon nanotubes, pitch-based carbon fibers, carbon nanofibers, carbon glass fibers, asphalt, and combinations thereof.
- carbon dioxide is added to the first reforming reaction machine 14 from the carbon dioxide injection device 13 and is added in a liquid state.
- the carbon dioxide may be stored in the carbon dioxide storage tank 11 and then cooled in a liquid state while passing through the carbon dioxide shell 12, and in a liquid state to the first reforming reactor 14 through the carbon dioxide injection device 13. May be injected.
- the temperature and pressure of the first reforming reaction vessel 14 are raised and elevated to allow the carbon dioxide to reach a subcritical or supercritical state.
- the temperature is 20 to 50 ° C
- the pressure is 73 to 200 atm, preferably about 35 to about 50 ° C, about 80 to about 200 atm.
- Each temperature and pressure condition can be appropriately adjusted so that the carbon dioxide can be maintained in a subcritical or supercritical state.
- the reforming of graphene may not occur effectively, and when the reaction is performed at the condition higher than the temperature and the pressure, the cost for maintaining the high temperature and high pressure conditions Economics may decrease and the likelihood of damaging the surface of the modified graphene may increase.
- Carbon dioxide in subcritical or supercritical fluid state in the first reforming reactor 14 may penetrate between the layered structures of graphene to exfoliate graphene. Through this process, graphene may be modified into graphene having excellent physical properties such as electrical conductivity and good dispersibility.
- This modification reaction may proceed in the presence of a surfactant.
- the surfactant may be any nonionic, cationic or anionic surfactant, as long as it is easily soluble in liquid carbon dioxide.
- the polyoxyalkylene alkylaryl ether surfactant and the alkoxylated fluorine surfactant may be used.
- Activators, fluorophosphate-based surfactants and the like can be used.
- the first and second reforming reaction vessels 14 and 15 and the graphenes subjected to the reforming reaction and decompression in the crab 1 and second depressurizers 20 and 21 are transferred to the recovery tank 16, and the recovery tank 16 The modified graphene can be recovered.
- the modified graphene may be delivered from the first depressurizer while the deionized water is filled therein.
- a recovery tank filled with deionized water since the separation of layers can be made more effective than when recovering the graphene in a general solid phase, a single-layer graphene having a smaller crystal size You can get a pin.
- a surfactant such as an alkyl benzene sulfonic acid aqueous solution is filled, it is highly likely to include impurities such as metal ions, but when deionized water is used, high purity is achieved without such a problem. You will get graphene.
- the specific surface area is increased by about 1.5 to about 5 times, the apparent density is reduced by about 10 to 50%, and the expansion ratio is about L5 to 5 times, resulting in excellent dispersibility.
- the temperature of the depressurized and engraved steps may be from about 20 to about 30 ° C.
- the pressure may be about 1 to about 10 Atm, and preferably about 1 to about 5 atm. If the depressurization and cooling steps are carried out at conditions lower than the temperature and pressure in the above range, it may be undesirable for repressurization, heating up, which may proceed later, and if the depressurization and cooling are made at conditions higher than the temperature and pressure in the above range, Since the cooling is not made much, it may be difficult to recover the graphene.
- graphene and carbon dioxide decompressed in the first depressurizer 20 may be transferred to the second reforming reactor 15 connected to the rear end of the first depressurizer 20. have.
- the temperature is further raised to subcritical or supercritical conditions, followed by a second reforming reaction.
- the temperature and pressure to be decompressed and cooled in the second depressor 21 can be adjusted to the same range as the first depressor 20.
- the graphene reforming unit is a second modified half unggi (1. 5) may further include an additional modification half unggi and to the rear end of the accumulator in accordance with the object.
- Figure 3 is a schematic diagram showing a simplified state of the graphene modification according to an embodiment of the present invention.
- the graphene is peeled off during the reforming process using subcritical or supercritical carbon dioxide, thereby increasing the surface area, decreasing the walking density, and increasing the expansion rate.
- the carbon dioxide discharged from the depressurization and incineration may be recovered to be re-introduced into the graphene reforming reaction.
- the recovered carbon dioxide is first decanted while passing through a carbon dioxide cooler (18), secondly cooled again through a carbon dioxide decanter (12), and then in a liquid state through a carbon dioxide injector (13). This process can reduce the amount of carbon dioxide released out of the reactor, thereby reducing the generation of greenhouse gases that have a significant impact on global warming.
- a modified graphene was obtained in the same manner as in Example 1 except that no surfactant was injected.
- a modified graphene was obtained in the same manner as in Example 3 except that no surfactant was injected.
- a modified graphene was obtained in the same manner as in Example 4, except that the reaction and the pressure were repeated twice.
- a modified graphene was obtained in the same manner as in Example 4 except that the reaction and the pressure were repeated five times.
- the peak observed at 2 ⁇ 26 ° , the peak of the 001 plane appearing in the layered structure of graphite, in the case of the embodiment, it can be seen that the tendency of intensity decrease than the comparative example.
- the layered structure of the graphene is almost separated and modified into a single layer of graphene.
- the crystal size is reduced through a change in the full width at half maximum (FWHM) and the non-gaussian distribution, and the crystal structures are arranged in an irregular shape.
- FWHM full width at half maximum
- the crystal size of the graphene is generally smaller than the comparative example.
- the crystal size it can be seen that in Example 1, the crystal size is 22.6 nm, which is significantly reduced compared to 43.0 nm of the comparative example. SEM, TEM observation
- Example 1 and Example 2 it can be seen that the crystal size is reduced compared to Comparative Example 1, in particular, in the case of Example 1, it can be seen that the number of overlapped layers slightly reduced by using a surfactant. . Apparent Density Check
- Example 7 0.020 4.00 Referring to Table 3 above, in the case of the modified example, the apparent density was significantly smaller than that of Comparative Example 1, and it was expanded about 4 to 5 times in terms of expansion rate. In particular, in the case of Example 1 using a surfactant, and in Example 5 in which the modification reaction was repeated twice, it can be confirmed that the expansion ratio becomes larger.
- Each sample was prepared in a dry powder state at 50 ° C for 24 hours using a vacuum oven, and the electrical conductivity was measured by a four-terminal method after applying a pressure of 12kN.
- the temperature during the measurement was about 5 to about 40 ° C, and the humidity was maintained below 50%.
- Example 6 Referring to Table 4, Table 6, in the case of the modified example by the modified reaction, it can be seen that the electrical conductivity is generally superior to that of the comparative example, in particular, the electrical conductivity by repeating the reaction and decompression process You can see the tendency to increase somewhat.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Nanotechnology (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Carbon And Carbon Compounds (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Conductive Materials (AREA)
- Inert Electrodes (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/907,862 US9611149B2 (en) | 2013-08-21 | 2014-08-21 | Method and apparatus for modifying graphene |
JP2016536039A JP6309627B2 (ja) | 2013-08-21 | 2014-08-21 | グラフェンの改質方法 |
EP14837488.7A EP3037383B1 (en) | 2013-08-21 | 2014-08-21 | Method for modifying graphene nanoplatelets and apparatus for modifying graphene |
CN201480046266.8A CN105492382A (zh) | 2013-08-21 | 2014-08-21 | 用于改性石墨烯的方法和设备 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2013-0099288 | 2013-08-21 | ||
KR20130099288 | 2013-08-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015026181A1 true WO2015026181A1 (ko) | 2015-02-26 |
Family
ID=52483896
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2014/007785 WO2015026181A1 (ko) | 2013-08-21 | 2014-08-21 | 그래핀의 개질 방법 및 장치 |
Country Status (7)
Country | Link |
---|---|
US (1) | US9611149B2 (ko) |
EP (1) | EP3037383B1 (ko) |
JP (1) | JP6309627B2 (ko) |
KR (1) | KR101653766B1 (ko) |
CN (1) | CN105492382A (ko) |
TW (1) | TWI546252B (ko) |
WO (1) | WO2015026181A1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105752978A (zh) * | 2016-05-06 | 2016-07-13 | 西南交通大学 | 一种改性石墨烯和其制备方法 |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016053988A1 (en) | 2014-09-29 | 2016-04-07 | Board Of Regents Of The University Of Nebraska | Nanofiber structures and methods of synthesis and use thereof |
KR20160114388A (ko) * | 2015-03-24 | 2016-10-05 | 한화케미칼 주식회사 | 고기능성 및 고분산성의 미세 흑연 입자 제조 방법 |
US11718529B1 (en) * | 2015-11-23 | 2023-08-08 | Paronyan Tereza M | Graphene networks and methods for synthesis and use of the same |
US9741998B2 (en) | 2015-12-29 | 2017-08-22 | Metal Industries Research & Development Centre | Method for manufacturing energy-storage composite material |
WO2018064281A1 (en) | 2016-09-28 | 2018-04-05 | Board Of Regents Of The University Of Nebraska | Nanofiber structures and methods of use thereof |
WO2018093943A1 (en) | 2016-11-16 | 2018-05-24 | The Regents Of The University Of California | Identification and optimization of carbon radicals on hydrated graphene oxide for ubiquitous antibacterial coatings |
CN106673700B (zh) * | 2016-12-02 | 2019-10-18 | 哈尔滨工业大学(威海) | 一种石墨泡沫及其制备方法 |
US10787610B2 (en) * | 2017-04-11 | 2020-09-29 | Terrapower, Llc | Flexible pyrolysis system and method |
WO2018227078A1 (en) | 2017-06-09 | 2018-12-13 | Board Of Regents Of The University Of Nebraska | Nanofiber structures and methods of use thereof |
CN107434261A (zh) * | 2017-07-19 | 2017-12-05 | 中国石油大学(北京) | 一种高分子辅助超临界剥离过渡金属硫化物的方法 |
CN107611393B (zh) * | 2017-09-08 | 2022-07-22 | 商洛学院 | 一种硫烯/三维多孔碳复合材料的制备方法 |
CN111479771B (zh) * | 2017-09-19 | 2024-03-08 | 内布拉斯加大学董事会 | 纳米纤维结构及其使用方法 |
CN107601478A (zh) * | 2017-10-13 | 2018-01-19 | 东北大学 | 一种石墨烯的制备方法 |
CN108298530A (zh) * | 2018-01-17 | 2018-07-20 | 中国石油大学(北京) | 一种寡层石墨烯及其制备方法与应用 |
TWI665161B (zh) * | 2018-05-16 | 2019-07-11 | 英屬維京群島商艾格生科技股份有限公司 | 石墨烯粉末及改善石墨烯缺陷之方法 |
CN110759331A (zh) * | 2018-07-25 | 2020-02-07 | 张文跃 | 一种石墨烯镀丝卷材制备装置及生产工艺 |
CN110255547A (zh) * | 2019-07-27 | 2019-09-20 | 侯梦斌 | 一种介入微波能的碳材料剥离设备与工艺 |
CN111020613B (zh) * | 2019-12-18 | 2021-05-21 | 武汉低维材料研究院有限公司 | 一种超薄石墨烯粉体的制备方法及其制备的产品 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20080027258A (ko) * | 2005-05-16 | 2008-03-26 | 마이크론 테크놀로지, 인크. | 초임계 유체를 이용한, 표면으로부터의 극성 유체의 제거 |
US20100044646A1 (en) * | 2008-08-25 | 2010-02-25 | Aruna Zhamu | Supercritical fluid process for producing nano graphene platelets |
KR20130050048A (ko) * | 2011-11-07 | 2013-05-15 | 김용성 | 그라펜을 개질하는 방법 및 이 개질된 그라펜을 포함한 나노복합재료 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101034579B1 (ko) | 2008-03-28 | 2011-05-12 | 한화케미칼 주식회사 | 탄소나노튜브의 연속적인 표면처리 방법 및 장치 |
KR101034580B1 (ko) | 2008-05-29 | 2011-05-12 | 한화케미칼 주식회사 | 탄소나노튜브의 연속적인 표면처리 방법 및 장치 |
KR101147259B1 (ko) | 2008-09-30 | 2012-05-21 | 한화케미칼 주식회사 | 탄소나노튜브의 연속적인 정제 방법 및 장치 |
US8414799B2 (en) * | 2010-06-18 | 2013-04-09 | National Defense University | Method for manufacturing graphene |
KR101254173B1 (ko) | 2011-01-04 | 2013-04-18 | 한국과학기술연구원 | 초임계유체를 이용한 그래핀 시트 또는 그래핀 입자의 제조방법 |
CN102795613B (zh) * | 2011-05-27 | 2014-09-10 | 清华大学 | 石墨烯-碳纳米管复合结构的制备方法 |
KR101256123B1 (ko) * | 2011-09-20 | 2013-04-23 | 주식회사 제이오 | 탄소나노튜브(또는 그래파이트) 회수 장치 및 이 장치를 포함하는 초임계 공정을 이용한 탄소나노튜브(또는 그래파이트)의 기능화-회수 장치 |
KR101377724B1 (ko) | 2011-10-26 | 2014-03-25 | 국립대학법인 울산과학기술대학교 산학협력단 | 흑연의 가장자리 기능화에 의한 그래핀의 제조방법 |
JP2013133257A (ja) * | 2011-12-26 | 2013-07-08 | Toshiba Corp | ナノグラフェンの製造方法及びその製造装置 |
CN102515155B (zh) * | 2012-01-05 | 2014-01-01 | 上海交通大学 | 一种超临界二氧化碳剥离制备大尺度石墨烯的方法 |
-
2014
- 2014-08-21 TW TW103128866A patent/TWI546252B/zh active
- 2014-08-21 WO PCT/KR2014/007785 patent/WO2015026181A1/ko active Application Filing
- 2014-08-21 EP EP14837488.7A patent/EP3037383B1/en active Active
- 2014-08-21 US US14/907,862 patent/US9611149B2/en active Active
- 2014-08-21 KR KR1020140109017A patent/KR101653766B1/ko active IP Right Grant
- 2014-08-21 CN CN201480046266.8A patent/CN105492382A/zh active Pending
- 2014-08-21 JP JP2016536039A patent/JP6309627B2/ja active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20080027258A (ko) * | 2005-05-16 | 2008-03-26 | 마이크론 테크놀로지, 인크. | 초임계 유체를 이용한, 표면으로부터의 극성 유체의 제거 |
US20100044646A1 (en) * | 2008-08-25 | 2010-02-25 | Aruna Zhamu | Supercritical fluid process for producing nano graphene platelets |
KR20130050048A (ko) * | 2011-11-07 | 2013-05-15 | 김용성 | 그라펜을 개질하는 방법 및 이 개질된 그라펜을 포함한 나노복합재료 |
Non-Patent Citations (2)
Title |
---|
LI, LIHUA ET AL.: "Solvent-Exfoliated and Functionalized Graphene with Assistance of Supercritical Carbon Dioxide", ACS SUSTAINABLE CHEM. ENG., vol. 1, 9 October 2012 (2012-10-09), pages 144 - 151, XP055319323 * |
PU, NEN-WEN ET AL.: "Production of few-layer graphene by supercritical C02 exfoliation of graphite", MATERIALS LETTERS, vol. 63, 22 June 2009 (2009-06-22), pages 1987 - 1989, XP026391184 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105752978A (zh) * | 2016-05-06 | 2016-07-13 | 西南交通大学 | 一种改性石墨烯和其制备方法 |
CN105752978B (zh) * | 2016-05-06 | 2018-11-30 | 西南交通大学 | 一种改性石墨烯和其制备方法 |
Also Published As
Publication number | Publication date |
---|---|
EP3037383A4 (en) | 2017-01-11 |
KR101653766B1 (ko) | 2016-09-02 |
JP6309627B2 (ja) | 2018-04-11 |
JP2016536258A (ja) | 2016-11-24 |
US20160176714A1 (en) | 2016-06-23 |
EP3037383A1 (en) | 2016-06-29 |
EP3037383B1 (en) | 2020-05-27 |
TW201518208A (zh) | 2015-05-16 |
CN105492382A (zh) | 2016-04-13 |
US9611149B2 (en) | 2017-04-04 |
KR20150021903A (ko) | 2015-03-03 |
TWI546252B (zh) | 2016-08-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2015026181A1 (ko) | 그래핀의 개질 방법 및 장치 | |
Dong et al. | Synthesis and reduction of large sized graphene oxide sheets | |
JP6400165B2 (ja) | グラフェンの製造方法 | |
Dao et al. | Graphene prepared by thermal reduction–exfoliation of graphite oxide: Effect of raw graphite particle size on the properties of graphite oxide and graphene | |
Zhang et al. | Top-down bottom-up graphene synthesis | |
Kamali | Eco-friendly production of high quality low cost graphene and its application in lithium ion batteries | |
Shen et al. | Synthesis of graphene by low-temperature exfoliation and reduction of graphite oxide under ambient atmosphere | |
Fang et al. | Janus electrochemical exfoliation of two-dimensional materials | |
KR100958444B1 (ko) | 팽창흑연시트에 혼합분산용액을 코팅한 혼합카본시트의 제조방법 | |
Luo et al. | A timesaving, low-cost, high-yield method for the synthesis of ultrasmall uniform graphene oxide nanosheets and their application in surfactants | |
KR101294223B1 (ko) | 대면적 그래핀 필름의 제조방법 | |
Rider et al. | Ultrasonicated-ozone modification of exfoliated graphite for stable aqueous graphitic nanoplatelet dispersions | |
Pareek et al. | Graphene and its applications in microbial electrochemical technology | |
Yang et al. | Reduced graphene oxide layers full of bubbles for electromagnetic interference shielding | |
Wen et al. | Preparation of graphene by exfoliation and its application in lithium-ion batteries | |
Ahmad et al. | Revolutionizing energy storage: A critical appraisal of MXene-based composites for material designing and efficient performance | |
Xu et al. | Facile synthesis of submillimeter sized graphene oxide by a novel method | |
Zeng et al. | Homogeneous dispersion of high-conductive reduced graphene oxide sheets for polymethylmethacrylate nanocomposites | |
Mehravar et al. | The role of cerium intercalation in the efficient dry exfoliation of graphene layers at a low temperature | |
Singha et al. | Graphene, its Family and Potential Applications | |
Rattan et al. | Microwave-Aided Exfoliation and Reduction of Graphene Oxide | |
Li et al. | Cd Powder as a Reductant for Graphene Oxide and a Precursor for CdO/rGO Hybrids with Good Capacitive Performance | |
TWI448426B (zh) | 奈米級石墨烯薄片之製作方法 | |
PAYYAPPILLY et al. | Synthesis and Fabrication of Graphene and Reduced Graphene Oxide | |
Devi et al. | Graphene and Its Derivatives: Various Routes of Synthesis |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201480046266.8 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14837488 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14907862 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 2016536039 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2014837488 Country of ref document: EP |