CN108190865A - A kind of method that graphene is prepared based on template-solid-phase carbon source thermal cracking - Google Patents
A kind of method that graphene is prepared based on template-solid-phase carbon source thermal cracking Download PDFInfo
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- C01B2204/00—Structure or properties of graphene
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
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- C01P2002/80—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70
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- C01P2004/03—Particle morphology depicted by an image obtained by SEM
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- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/04—Particle morphology depicted by an image obtained by TEM, STEM, STM or AFM
Abstract
The present invention relates to a kind of method for preparing graphene based on template solid-phase carbon source thermal cracking, step is as follows：(1) pickling processes, using sulfuric acid, nitric acid, hydrochloric acid or wherein the mixed acid of the two carries out pickling processes to template powder；(2) melting or solution blending, by the template powder after pickling processes and solid-phase carbon source melts or solution blending；(3) thermal cracking is warming up to heat preservation after thermal cracking temperature under inert gas shielding and obtains the composite material of graphene/template；(4) template agent removing is removed, pickling is carried out to the composite material of graphene/template and freeze-drying process obtains graphene, the final graphene powder number of plies obtained is 1~10, and conductivity is 1~1000S/cm.Preparation method of the present invention is simple, and extensively, it can be achieved that prepared by the low cost of graphene, the graphene and its composite material that the present invention is prepared may be directly applied to the fields such as functional paint and fiber, great application prospect for carbon source selection.
Description
Technical field
The invention belongs to field of preparation of graphene, specially one kind prepares graphite based on template-solid-phase carbon source thermal cracking
The method of alkene.
Background technology
From 2004, the physics professor of Univ Manchester UK was succeeded for the first time with a kind of open-and-shut mechanical stripping method
It is detached from graphite and observes individual layer two-dimensional graphene nanocrystalline structure, " perfect two dimensional crystal structure has been overthrown in this discovery
Can not be stabilized under non-absolute zero " final conclusion, thus graphene caused in world wide as novel nano-material
Extensive concern, and started research boom in basic research and Applied research fields.Single-layer graphene refer to one layer it is intensive,
The two-dimensional structure that carbon atom arrangement in the honeycomb crystal lattice of package forms, i.e., its presentation is with sp2What hydbridized carbon atoms were formed
Monolayer honeycomb shape lattice structure, thickness are only 0.335nm.Because between the carbon atom of graphene with sp2Hydridization, therefore the σ keys in face are
Its most strong key, the pi bond outside face promote the delocalized of electric network, and it is a series of to impart graphene under the two comprehensive function
Excellent electricity, optics, calorifics and mechanical property, in nano electron device, energy storage material, sensor, transparent conductive film, work(
The fields such as energy property coating have certain application prospect.
At present, graphene preparation method can be divided into " from bottom to top " and " from top to bottom " two class." from top to bottom " class method
Though middle oxidation-reduction method and liquid phase stripping method can realize the preparation of graphene to a certain extent, because this method can introduce
A large amount of defects are unable to control the performance that graphene size seriously affects its product so that such method application is limited." from lower and
On " to prepare a kind of widely used method of graphene at present, this method is real for chemical vapour deposition technique in class method
Existing graphene, can be by controlling rate of temperature fall and substrate in the preparation of various metals (such as Ni, Cu, Ru, Pt, Ir) substrate surface
Thickness adjusts the properties of product of graphene.Chemical vapour deposition technique also can be selected hydrocarbon solid mostly using gaseous carbon sources as carbon source at present
Body compound makees solid-state carbon source or benzene, toluene, methanol, ethane, ethyl alcohol, acetone and pentane etc. and makees liquid carbon source.Although this method
With controllability is good and the advantages such as technology maturation, but its flow is complex, cost is higher.
Therefore develop that a kind of flow is simple and low-cost graphene preparation method is current urgent problem to be solved.State
Inside and outside expert has carried out various researchs for this problem.
103663441 B of patent of invention CN disclose one kind and are related to phthalocyanine compound, phthalocyanine polymer and its derivative
The method of nano metal graphite alkenes material is prepared for starting material, although under the action of specific metallic catalyst
To final product, flow is relatively simple, but the pyrolysis time needed for this method is longer and the range of choice of its solid-phase carbon source is relatively narrow, system
It is standby less efficient；Patent CN104370285A discloses a kind of side that high-quality graphene is prepared using biomineralization material magnanimity
Method, after biomineralization material (such as diatomite) is carried out high-temperature calcination, then by carbon source obtained graphene deposited thereon, although
This method high-efficiency environment friendly, but it uses gas phase carbon source to also need to be additionally provided atmosphere of hydrogen, final product graphene size and pattern
It is difficult to control.
Therefore, develop that a kind of flow is simple, graphene preparation method of low cost and product size morphology controllable becomes
A technical problem to be solved urgently.
Invention content
It is a kind of based on template-solid-phase carbon source thermal cracking system the purpose of the present invention is overcoming the deficiencies of the prior art and provide
The method of standby graphene.The present invention is using polymer as carbon source, using porous, inorganic powder as template, in high pure nitrogen or argon gas
Under atmosphere, according to the corresponding heat chemistry characteristic of carbon source, graphene and its compound is prepared in 800~1300 DEG C of one step thermal cracking
Material.
In order to achieve the above object, the technical solution adopted by the present invention is：
A kind of method for preparing graphene based on template-solid-phase carbon source thermal cracking is made in no metal or metallic compound
Under the premise of for catalyst, by solid-phase carbon source, thermal cracking forms graphene under the inducing action of template.The present invention can be
No metal or metallic compound make that graphene is prepared by thermal cracking under conditions of catalyst, because solid-phase carbon source is in high temperature
Under the carbon atom that is generated by thermal cracking can generate interaction on template surface and with template, carbon atom further induces
Structure possessed by the regular arrangement form graphene of carbon atom.
As preferred technical solution：
A kind of method that graphene is prepared based on template-solid-phase carbon source thermal cracking as described above, the solid-phase carbon source
For polymer.Polymer derives from a wealth of sources；Polymer can heat fusing repeatedly, have good flowing more than characteristic temperature
Property, hydrogen need not be additionally provided when polymer makees solid-phase carbon source, when the carbon that it can be generated under certain thermal cracking temperature
Atom simultaneously interacts to realize the preparation of graphene with template.
A kind of method that graphene is prepared based on template-solid-phase carbon source thermal cracking as described above, the polymer
Number-average molecular weight is 2~100,000, and the polymer is polypropylene (PP), polyethylene (PE), polyacrylonitrile (PAN) or poly- methyl-prop
E pioic acid methyl ester (PMMA), the polymer of the scope of the present invention be not limited to that, other polymers such as thermoplastic polymer
It is applicable to the present invention.
A kind of method for preparing graphene based on template-solid-phase carbon source thermal cracking as described above, the template are
Inorganic powder material, grain size are 20nm~20 μm.It is realized by controlling the pore size of powder body material to final product graphite
The regulation and control of alkene size.When the grain size of inorganic powder material is larger, the lamella of final product graphene is larger thicker；And inorganic particle
When grain size is smaller, the graphite ene product that lamella is smaller and the number of plies is less can be obtained.
A kind of method that graphene is prepared based on template-solid-phase carbon source thermal cracking as described above, the inorganic particle
Material is one or more of diatomite, montmorillonite, kaolin and clay.
A kind of method for preparing graphene based on template-solid-phase carbon source thermal cracking as described above, step are as follows：
(1) pickling processes, using sulfuric acid, nitric acid, hydrochloric acid or wherein the mixed acid of the two carries out pickling to template powder
It handles, the ratio of two kinds of sour volume ratios is 1/3~1 in the mixed acid；
(2) melting or solution blending, by the template powder after pickling processes and solid-phase carbon source melts or solution blending, institute
The temperature for stating melt blending is higher than the blending mass ratio of 20~80 DEG C of solid-phase carbon source fusing point, the template powder and solid-phase carbon source
It is 1~5:9；
(3) thermal cracking is warming up to heat preservation after thermal cracking temperature under inert gas shielding and obtains answering for graphene/template
Condensation material；There is graphitization to be formed under inducing action of the solid-phase carbon source at high temperature and in template during thermal cracking
The grapheme material of structure, while graphene coated is in the outer surface of template；
(4) template agent removing is removed, pickling is carried out to the composite material of graphene/template and freeze-drying process obtains graphite
Alkene.
A kind of method that graphene is prepared based on template-solid-phase carbon source thermal cracking as described above, in step (3), institute
Thermal cracking is stated to carry out in tube furnace, the inert gas is nitrogen or argon gas, the flow velocity of the inert gas for 100~
300sccm (standard milliliters/minute), the rate of the heating are 10~30 DEG C/min, the temperature of the thermal cracking for 800~
1300 DEG C, the time of the heat preservation is 5~100min.The present invention can change production by adjusting the temperature of thermal cracking with soaking time
Object graphene performance, the temperature for graphene being controlled to be grown on template surface according to different temperature and soaking time is set and
Time when thermal cracking temperature is higher and soaking time is longer, can obtain the more complete product graphene of structure；Thermal cracking temperature
When relatively low and soaking time is shorter, graphene cannot realize growth completely on template surface.
A kind of method that graphene is prepared based on template-solid-phase carbon source thermal cracking as described above, in step (4), institute
It states pickling to refer to be washed using hydrofluoric acid, the temperature of the freeze-drying is -20~-90 DEG C, and the time is 24~48h.
A kind of method that graphene is prepared based on template-solid-phase carbon source thermal cracking as described above, final stone obtained
The black alkene powder number of plies is 1~10, and conductivity is 1~1000S/cm.
Advantageous effect：
(1) a kind of method that graphene is prepared based on template-solid-phase carbon source thermal cracking of the invention, with polymer and mould
Starting material is made in plate agent, and makees thermal cracking raw material with the template through pickling and the melt blended material of polymer, has environmental protection, behaviour
Work is simple, product is controllable and the advantages such as production cost is low, it is easy to accomplish industrialized production；
(2) a kind of method that graphene is prepared based on template-solid-phase carbon source thermal cracking of the invention, in thermal cracking processes
By inert gas shielding, can exist in no catalyst and graphene and its composite material, safety is prepared under non-hydrogen atmosphere
It is high；
(3) a kind of method that graphene is prepared based on template-solid-phase carbon source thermal cracking of the invention, it is preparation-obtained
Graphene/template composite material may be directly applied to the fields such as functional paint or fiber, great application prospect.
Description of the drawings
Fig. 1 is the diatomaceous SEM figures of raw material of the present invention；
Fig. 2 is the final graphene Raman collection of illustrative plates obtained of the present invention；
Fig. 3 is the final graphene SEM figures obtained of the present invention；
Fig. 4 is the final graphene TEM figures obtained of the present invention.
Specific embodiment
The invention will be further elucidated with reference to specific embodiments.It should be understood that these embodiments are merely to illustrate this hair
It is bright rather than limit the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, art technology
Personnel can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Fixed range.
Embodiment 1
A kind of method for preparing graphene based on template-solid-phase carbon source thermal cracking, step are as follows：
(1) pickling processes, it for 1/2 sulfuric acid and the mixed acid of nitric acid is 20~51nm to grain size to use the ratio of volume ratio
Diatomite carry out pickling processes, raw material diatomaceous SEM figures are as shown in Figure 1；
(2) melt blending melts the diatomite powder after pickling processes with number-average molecular weight for 20000~40000 PP
Melt blending, higher than 54 DEG C of PP fusing points, the ratio of the mass ratio of diatomite powder and PP is 1/9 for the temperature of melt blending；
(3) thermal cracking, heat preservation 100min obtains graphite after being warming up to 1000 DEG C under flow velocity is the protection of 100sccm argon gas
The composite material of alkene/template, wherein thermal cracking carry out in tube furnace, and the rate of heating is 10 DEG C/min；
(4) remove template agent removing, to the composite material of graphene/template using hydrofluoric acid washed and freeze-drying at
Reason obtains graphene, wherein the temperature being freeze-dried is -20 DEG C, time 32h.
The final graphene powder number of plies obtained is 5, and conductivity 33S/cm, Raman collection of illustrative plates is as shown in Fig. 2, from figure
In can be seen that D peaks significantly lower than G peaks and 2D peaks it is more sharp, wherein the ratio at D peaks and G peaks is about the ratio at 0.69,2D peaks and G peaks
Value about 0.40, this illustrates that the fault of construction of its graphene of product of the present invention is less and is few layer, and SEM is schemed as shown in figure 3, with figure
The SEM figures of the template of 1 blank compare it is found that in the edge on template surface there are apparent graphene fold, show
Through solid-phase carbon source thermal cracking and under its interaction with template, growth of the graphene on template surface, TEM are realized
Figure as shown in figure 4, as can be seen from Figure final product of the invention be graphene and its be few layer graphene.
Embodiment 2
A kind of method for preparing graphene based on template-solid-phase carbon source thermal cracking, step are as follows：
(1) pickling processes use nitric acid to carry out pickling processes for the montmorillonite of 500~1300nm to grain size；
(2) melt blending melts the montmorillonite powder after pickling processes with number-average molecular weight for 20000~30000 PE
Melt blending, higher than 70 DEG C of PE fusing points, the ratio of the mass ratio of montmorillonite powder and PE is 3/17 for the temperature of melt blending；
(3) thermal cracking, heat preservation 5min obtains graphene/mould after being warming up to 800 DEG C under flow velocity is the protection of 150sccm argon gas
The composite material of plate agent, wherein thermal cracking carry out in tube furnace, and the rate of heating is 18 DEG C/min；
(4) remove template agent removing, to the composite material of graphene/template using hydrofluoric acid washed and freeze-drying at
Reason obtains graphene, wherein the temperature being freeze-dried is -80 DEG C, time 48h.
The final graphene powder number of plies obtained is 8, conductivity 300S/cm.
Embodiment 3
A kind of method for preparing graphene based on template-solid-phase carbon source thermal cracking, step are as follows：
(1) pickling processes use hydrochloric acid to carry out pickling processes for the kaolin of 1800nm to grain size；
(2) solution blending, by the PAN solution that the kaolin powder after pickling processes and number-average molecular weight are 20,000~2.5 ten thousand
The ratio of the mass ratio of blending, kaolin powder and PAN is 3/9；
(3) thermal cracking, flow velocity for 160sccm argon gas protection under be warming up to 900 DEG C after heat preservation 52min obtain graphene/
The composite material of template, wherein thermal cracking carry out in tube furnace, and the rate of heating is 30 DEG C/min；
(4) remove template agent removing, to the composite material of graphene/template using hydrofluoric acid washed and freeze-drying at
Reason obtains graphene, wherein the temperature being freeze-dried is -40 DEG C, the time is for 24 hours.
The final graphene powder number of plies obtained is 10, conductivity 1S/cm.
Embodiment 4
A kind of method for preparing graphene based on template-solid-phase carbon source thermal cracking, step are as follows：
(1) pickling processes use sulfuric acid to carry out pickling processes for 8~9.6 μm of clay to grain size；
(2) melt blending, by the PP melt blendings that the clay powder after pickling processes and number-average molecular weight are 70,000~80,000,
The temperature of melt blending is higher than 40 DEG C of PP fusing points, and the ratio of the mass ratio of clay powder and PP is 5/13；
(3) thermal cracking, flow velocity for 300sccm argon gas protection under be warming up to 960 DEG C after heat preservation 53min obtain graphene/
The composite material of template, wherein thermal cracking carry out in tube furnace, and the rate of heating is 20 DEG C/min；
(4) remove template agent removing, to the composite material of graphene/template using hydrofluoric acid washed and freeze-drying at
Reason obtains graphene, wherein the temperature being freeze-dried is -90 DEG C, time 44h.
The final graphene powder number of plies obtained is 6, conductivity 500S/cm.
Embodiment 5
A kind of method for preparing graphene based on template-solid-phase carbon source thermal cracking, step are as follows：
(1) pickling processes, it for the mixed acid of 1/3 nitric acid and hydrochloric acid is 11.2~15.3 to grain size to use the ratio of volume ratio
μm diatomite and montmorillonite mixture (mass ratio 1:1) pickling processes are carried out；
(2) diatomite after pickling processes and the powder of the mixture of montmorillonite and number-average molecular weight are 7 by melt blending
Ten thousand~100,000 PE melt blendings, the temperature of melt blending is higher than 20 DEG C of PE fusing points, the powder of the mixture of diatomite and montmorillonite
The ratio of the mass ratio of body and PE is 7/17；
(3) thermal cracking, flow velocity for 200sccm nitrogen protection under be warming up to 920 DEG C after heat preservation 10min obtain graphene/
The composite material of template, wherein thermal cracking carry out in tube furnace, and the rate of heating is 15 DEG C/min；
(4) remove template agent removing, to the composite material of graphene/template using hydrofluoric acid washed and freeze-drying at
Reason obtains graphene, wherein the temperature being freeze-dried is -50 DEG C, time 36h.
The final graphene powder number of plies obtained is 1, conductivity 1000S/cm.
Embodiment 6
A kind of method for preparing graphene based on template-solid-phase carbon source thermal cracking, step are as follows：
(1) pickling processes, it for 1 sulfuric acid and the mixed acid of hydrochloric acid is 17.5~20 μm to grain size to use the ratio of volume ratio
Kaolin and clay mixture (mass ratio 3:1) pickling processes are carried out；
(2) kaolin after pickling processes and the mixture powder of clay and number-average molecular weight are 26000 by melt blending
~42000 PP melt blendings, the temperature of melt blending are higher than the mixture powder and PP of 28 DEG C of PP fusing points, kaolin and clay
Mass ratio ratio be 1/4；
(3) thermal cracking, flow velocity for 155sccm nitrogen protection under be warming up to 1300 DEG C after heat preservation 80min obtain graphene/
The composite material of template, wherein thermal cracking carry out in tube furnace, and the rate of heating is 18 DEG C/min；
(4) remove template agent removing, to the composite material of graphene/template using hydrofluoric acid washed and freeze-drying at
Reason obtains graphene, wherein the temperature being freeze-dried is -70 DEG C, time 30h.
The final graphene powder number of plies obtained is 7, conductivity 230S/cm.
Embodiment 7
A kind of method for preparing graphene based on template-solid-phase carbon source thermal cracking, step are as follows：
(1) pickling processes, use the ratio of volume ratio for 2/3 sulfuric acid and the mixed acid of nitric acid be 120 to grain size~
The diatomite of 640nm and the mixture (mass ratio 1 of clay:2) pickling processes are carried out；
(2) melt blending, by the diatomite after pickling processes and the mixture powder of clay and number-average molecular weight for 20,000~
40000 PE melt blendings, the temperature of melt blending is higher than 35 DEG C of PE fusing points, the matter of the mixture powder and PE of diatomite and clay
The ratio for measuring ratio is 6/13；
(3) thermal cracking, flow velocity for 170sccm argon gas protection under be warming up to 1170 DEG C after heat preservation 40min obtain graphene/
The composite material of template, wherein thermal cracking carry out in tube furnace, and the rate of heating is 19 DEG C/min；
(4) remove template agent removing, to the composite material of graphene/template using hydrofluoric acid washed and freeze-drying at
Reason obtains graphene, wherein the temperature being freeze-dried is -30 DEG C, time 28h.
The final graphene powder number of plies obtained is 6, conductivity 212S/cm.
Embodiment 8
A kind of method for preparing graphene based on template-solid-phase carbon source thermal cracking, step are as follows：
(1) pickling processes, it for 3/4 sulfuric acid and the mixed acid of hydrochloric acid is 10~12 μm to grain size to use the ratio of volume ratio
Montmorillonite, kaolin and clay mixture (mass ratio 1:2:2) pickling processes are carried out；
(2) solution blending, by montmorillonite, the powder of the mixture of kaolin and clay and the equal molecules of number after pickling processes
Measure the PAN solution blendings for 6.1 ten thousand~8.2 ten thousand, the powder of the mixture of montmorillonite, kaolin and clay and the mass ratio of PAN
Ratio be 5/9；
(3) thermal cracking, flow velocity for 195sccm argon gas protection under be warming up to 1100 DEG C after heat preservation 30min obtain graphene/
The composite material of template, wherein thermal cracking carry out in tube furnace, and the rate of heating is 20 DEG C/min；
(4) remove template agent removing, to the composite material of graphene/template using hydrofluoric acid washed and freeze-drying at
Reason obtains graphene, wherein the temperature being freeze-dried is -60 DEG C, time 32h.
The final graphene powder number of plies obtained is 6, conductivity 440S/cm.
Embodiment 9
A kind of method for preparing graphene based on template-solid-phase carbon source thermal cracking, step are as follows：
(1) pickling processes, it for 3/4 sulfuric acid and the mixed acid of hydrochloric acid is 10~12 μm to grain size to use the ratio of volume ratio
Montmorillonite, kaolin and clay mixture (mass ratio 1:1:2) pickling processes are carried out；
(2) melt blending, by montmorillonite, the powder of the mixture of kaolin and clay and the equal molecules of number after pickling processes
The PMMA melt blendings for 60,000~70,000 are measured, the temperature of melt blending is higher than 46 DEG C of PMMA fusing points, montmorillonite, kaolin and clay
Mixture powder and PMMA mass ratio ratio be 4/9；
(3) thermal cracking, flow velocity for 170sccm argon gas protection under be warming up to 970 DEG C after heat preservation 40min obtain graphene/
The composite material of template, wherein thermal cracking carry out in tube furnace, and the rate of heating is 19 DEG C/min；
(4) remove template agent removing, to the composite material of graphene/template using hydrofluoric acid washed and freeze-drying at
Reason obtains graphene, wherein the temperature being freeze-dried is -70 DEG C, time 30h.
The final graphene powder number of plies obtained is 7, conductivity 320S/cm.
Claims (9)
1. a kind of method that graphene is prepared based on template-solid-phase carbon source thermal cracking, it is characterized in that：In no metal or metallization
Under the premise of object is closed as catalyst, by solid-phase carbon source, thermal cracking forms graphene under the inducing action of template.
2. a kind of method that graphene is prepared based on template-solid-phase carbon source thermal cracking according to claim 1, feature
It is, the solid-phase carbon source is polymer.
3. a kind of method that graphene is prepared based on template-solid-phase carbon source thermal cracking according to claim 2, feature
It is, the number-average molecular weight of the polymer is 2~100,000, and the polymer is polypropylene, polyethylene, polyacrylonitrile or poly- first
Base methyl acrylate.
4. a kind of method that graphene is prepared based on template-solid-phase carbon source thermal cracking according to claim 3, feature
It is, the template is inorganic powder material, and grain size is 20nm~20 μm.
5. a kind of method that graphene is prepared based on template-solid-phase carbon source thermal cracking according to claim 4, feature
It is, the inorganic powder material is one or more of diatomite, montmorillonite, kaolin and clay.
6. a kind of method that graphene is prepared based on template-solid-phase carbon source thermal cracking according to claim 5, feature
It is, step is as follows：
(1) pickling processes, using sulfuric acid, nitric acid, hydrochloric acid or wherein the mixed acid of the two carries out pickling processes to template powder,
The ratio of two kinds of sour volume ratios is 1/3~1 in the mixed acid；
(2) melting or solution blending, by the template powder after pickling processes and solid-phase carbon source melts or solution blending, described molten
Melt the temperature of blending higher than 20~80 DEG C of solid-phase carbon source fusing point, the blending mass ratio of the template powder and solid-phase carbon source is 1
~5:9；
(3) thermal cracking is warming up to heat preservation after thermal cracking temperature under inert gas shielding and obtains the composite wood of graphene/template
Material；
(4) template agent removing is removed, pickling is carried out to the composite material of graphene/template and freeze-drying process obtains graphene.
7. a kind of method that graphene is prepared based on template-solid-phase carbon source thermal cracking according to claim 6, feature
Be, in step (3), the thermal cracking carries out in tube furnace, the inert gas be nitrogen or argon gas, the inertia
The flow velocity of gas is 100~300sccm, and the rate of the heating is 10~30 DEG C/min, the temperature of the thermal cracking for 800~
1300 DEG C, the time of the heat preservation is 5~100min.
8. a kind of method that graphene is prepared based on template-solid-phase carbon source thermal cracking according to claim 6, feature
It is, in step (4), the pickling refers to be washed using hydrofluoric acid, and the temperature of the freeze-drying is -20~-90 DEG C,
Time is 24~48h.
9. according to a kind of side that graphene is prepared based on template-solid-phase carbon source thermal cracking of claim 1~8 any one of them
Method, which is characterized in that the final graphene powder number of plies obtained is 1~10, and conductivity is 1~1000S/cm.
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| CN111501133A (en) * | 2020-05-28 | 2020-08-07 | 中国科学院化学研究所 | Carbon nanofiber based on inorganic structure template and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111501133A (en) * | 2020-05-28 | 2020-08-07 | 中国科学院化学研究所 | Carbon nanofiber based on inorganic structure template and preparation method thereof |
| CN111501133B (en) * | 2020-05-28 | 2021-05-25 | 中国科学院化学研究所 | Carbon nanofiber based on inorganic structure template and preparation method thereof |
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| CN108190865B (en) | 2020-07-28 |
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