CN106809817A - A kind of preparation method of porous CNT - Google Patents
A kind of preparation method of porous CNT Download PDFInfo
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- CN106809817A CN106809817A CN201710032336.XA CN201710032336A CN106809817A CN 106809817 A CN106809817 A CN 106809817A CN 201710032336 A CN201710032336 A CN 201710032336A CN 106809817 A CN106809817 A CN 106809817A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000000967 suction filtration Methods 0.000 claims abstract description 17
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 15
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 14
- 239000000725 suspension Substances 0.000 claims abstract description 14
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 12
- 238000002679 ablation Methods 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims abstract description 10
- 239000008367 deionised water Substances 0.000 claims abstract description 8
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000004140 cleaning Methods 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 6
- 239000012286 potassium permanganate Substances 0.000 claims abstract description 6
- 239000011261 inert gas Substances 0.000 claims abstract description 5
- 238000005554 pickling Methods 0.000 claims abstract description 5
- 238000004108 freeze drying Methods 0.000 claims abstract description 3
- 239000007772 electrode material Substances 0.000 claims description 13
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- 150000002500 ions Chemical class 0.000 claims description 6
- 230000002000 scavenging effect Effects 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 7
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000011160 research Methods 0.000 description 5
- 239000003575 carbonaceous material Substances 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 239000011149 active material Substances 0.000 description 3
- 238000013019 agitation Methods 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000003643 water by type Substances 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- LLYXJBROWQDVMI-UHFFFAOYSA-N 2-chloro-4-nitrotoluene Chemical compound CC1=CC=C([N+]([O-])=O)C=C1Cl LLYXJBROWQDVMI-UHFFFAOYSA-N 0.000 description 1
- 241000555268 Dendroides Species 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011026 diafiltration Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002071 nanotube Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
- H01M4/587—Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
- C01P2004/13—Nanotubes
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/16—Pore diameter
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The present invention relates to a kind of preparation method of porous CNT, including：CNT is added in the mixed liquor of concentrated nitric acid and the concentrated sulfuric acid, 7~24h is stirred, suction filtration, cleaning is then dispersed in deionized water, obtains carbon nanotube suspension；By KMnO4It is added in carbon nano tube suspension, lucifuge stirring, freeze-drying obtains powder, and then under inert gas conditions, 400~1000 DEG C of 1.5~5h of ablation, pickling, suction filtration, cleaning, drying obtain porous CNT.The method of the present invention is simple and easy to apply, safety and environmental protection, low cost, is suitable to large-scale production, and the porous CNT for preparing not only improves the specific surface area of carbon pipe, and also improves the conductive capability of CNT.
Description
Technical field
The invention belongs to the preparation field of ion battery electrode materials, more particularly to a kind of preparation side of porous CNT
Method.
Background technology
The efficient utilization and storage of the energy are always the big difficult scientific problems of energy development advancing.During this period, lithium from
Sub- battery gets their way into people's lives as a kind of high capacity, portable equipment, at the same other various ion batteries such as sodium from
Son, the research of magnesium ion scheduling theory and the preparation of material are also shown up prominently in scientific research field.With related scientific research test into
Ripe, ion battery also occurs in that many problems in the step strided forward to practical application.The electrode material for example in charge and discharge process
Active material is because itself or reaction during forming unstable SEI layers of consumption electrode material and electrolyte, charge and discharge cycles
During formed accessory substance in electrolyte spread and dissolve and lose a part of active material, dendroid dendrite pierce through barrier film make
The advantage of both battery short circuit, the cyclical stability of battery and specific capacity high can not simultaneously exist etc..It is many to solve this
Problem, battery electrode material structure is always the focus for improving battery performance research.In commercialized lithium battery, stone
Ink makes Many researchers be sustained without reduction the enthusiasm of carbon material as the negative material of battery.In the article delivered, stone
The carbon materials such as black alkene, CNT, carbon black, super carbon, foam type carbon all bring the breakthrough in scientific research to ion battery.
In currently available carbon material, CNT has electric conductivity, excellent mechanical performance, chemistry concurrently as a kind of
The carbon material of performance, is attempted and utilizes in electrode material in a variety of manners.But in the example being employed, CNT can
The treatment such as some surface hydrophilics, doping can be done, the structure of CNT is only changed on atom or molecule rank yardstick, difficult
To carry out the modification of follow-up CNT internal structure, therefore the structure of change carbon pipe has important meaning on a larger scale
Justice.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of preparation method of porous CNT, the letter of the method process
List, originally wide material sources, the porous CNT for preparing is as the emerging inexpensive inorganic battery electrode material of load
The conductive frame of (such as phosphorus (P), sulphur (S)), makes up defect of these inorganic electrode materials on electric conductivity, and lifting electrode exists
Electric conductivity, storage lithium performance in li-ion electrode materials.
The method of the present invention is simple and easy to apply, safety and environmental protection, low cost, is suitable to large-scale production, the porous carbon for preparing
Nanotube not only improves the specific surface area of carbon pipe, and also improves the conductive capability of CNT.
A kind of preparation method of porous CNT of the invention, including：
(1) CNT is added in the mixed liquor of concentrated nitric acid and the concentrated sulfuric acid, stirs 2~24h, suction filtration is cleaned, then
Dispersion in deionized water, obtains carbon nanotube suspension；
(2) by KMnO4It is added in the carbon nano tube suspension in step (1), lucifuge stirring, freeze-drying obtains powder
End；
(3) powder that will be obtained in step (2) under inert gas conditions, 400~1000 DEG C of 1.5~5h of ablation, pickling,
Suction filtration or centrifugation, cleaning, drying obtain porous CNT.
The volume ratio of concentrated nitric acid and the concentrated sulfuric acid is 1 in the step (1):3.
The mass concentration of the concentrated nitric acid is 65~68%, and the mass concentration of the concentrated sulfuric acid is 95~98%.
The concentrated nitric acid is 40~120ml with the mixed solution cumulative volume of the concentrated sulfuric acid；The concentrated sulfuric acid adds concentrated nitric acid during mixing
In.
The concentration of carbon nanotube suspension is 2~6mg/ml in the step (1).
KMnO in the step (2)4It is 0.1~13 with the mass ratio of CNT:1.
The KMnO4Addition be 10~60mg.
The time of lucifuge stirring is 10~24h in the step (2).
Inert gas is N in the step (3)2Or Ar2, protect CNT not oxidized at high temperature.
Coloured product in the step (2) obtained by ablation is brown color.
Pickling is to be cleaned with excessive 0.1~10mol/L hydrochloric acid, sulfuric acid or nitric acid in the step (3), and scavenging period is more than
Equal to 0.5h；Clean and be：Cleaning to solution is neutrality.
Except above-mentioned, involved washing process makes to be washed with deionized in remaining step.
The hole size of porous CNT is 0.1~80nm in the step (3), and depth is 0.1~20nm.
Products therefrom is black in the step (3).
Product structure is the structure that many defective holes are formd on CNT tube wall in the step (3), and these
The hole depth (perpendicular to length direction of pipe) in hole is 0.1~20nm, and aperture (parallel to length direction of pipe) is 0.1~80nm.
Porous CNT is used as the conductive pane for loading emerging inexpensive inorganic battery electrode material in the step (3)
Frame is applied to ion battery electrode materials.
Beneficial effect
(1) present invention is using the carbon pipe bought from market and potassium permanganate reagent as the presoma of material, raw material sources side
Just；Preparation method is simple, safe preparation process；
(2) carbon nano tube surface prepared with the method for the present invention contains substantial amounts of hole, compared to smooth surface
CNT, improves specific surface area, while this some holes has certain depth, can be used to do the load holes of inorganic material, increases
Added can attachment activity material attachment point, and the electric conductivity of electrode material is also improved as a conductive frame；Simultaneously
Due to the limitation of carbon tube frame, it is also possible to reduce contact area of the inorganic material with electrolyte, active material is reduced in electrolyte
In dissolving, be also provided with certain cyclical stability in the case where certain specific capacity is ensured, solve it is inorganic with phosphorus, sulphur etc.
Material has huge potentiality as GND when institute produced problem.
Brief description of the drawings
Fig. 1 is porous CNT low power field emission scanning electron microscope picture prepared by embodiment 1；
Fig. 2 is porous CNT high power Flied emission transmission electron microscope picture prepared by embodiment 1.
Specific embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention
Rather than limitation the scope of the present invention.In addition, it is to be understood that after the content for having read instruction of the present invention, people in the art
Member can make various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited
Scope.
Embodiment 1
(1) it is 1 to take volume ratio:3 concentrated nitric acid (65~68wt%) and the concentrated sulfuric acid (95~98wt%), is well mixed
(40ml)；40mg CNTs are added, 10h, suction filtration is stirred, and is washed with deionized water during the liquid pH value obtained to suction filtration is
Property；CNT is taken out, is dispersed in 10ml deionized waters, form the carbon nanotube suspension that carbon pipe concentration is 4mg/ml；
(2) to addition 35mg KMnO in above-mentioned suspension4, lucifuge magnetic agitation 12h；Mixed liquor after stirring is placed on
Liquid nitrogen snap frozen in plastic test tube, after be put into vacuum freeze drier and dry 18h；
(3) by the fluffy powder obtained by drying, it is transferred in high temperature alumina ceramic boat, is put into tube furnace, N2Gas
Under atmosphere, 550 DEG C of ablation 4h are cooled to room temperature taking-up；Sample after ablation is put into the hydrochloric acid of 1mol/L and cleans 72h；Suction filtration
Clean, the liquid pH to suction filtration outflow is neutrality, and powder is taken out, and is dried, and resulting final black powder is received for porous carbon
Mitron.
Embodiment 2
(1) it is 1 to take volume ratio:3 concentrated nitric acid (65~68wt%) and the concentrated sulfuric acid (95~98wt%), is well mixed
(50ml)；40mg CNTs are added, 10h, suction filtration is stirred, and is washed with deionized water during the liquid pH value obtained to suction filtration is
Property；CNT is taken out, is dispersed in 10ml deionized waters, form the carbon nanotube suspension that carbon pipe concentration is 4mg/ml；
(2) to addition 40mg KMnO in above-mentioned suspension4, lucifuge magnetic agitation 12h；By the mixed liquor liquid nitrogen after stirring
Snap frozen, is put into vacuum freeze drier and dries 24h；
(3) by the fluffy powder obtained by drying, it is transferred in high temperature alumina ceramic boat, is put into tube furnace, Ar2Gas
Under atmosphere, 650 DEG C of ablation 2h are cooled to room temperature taking-up；Sample after ablation is put into the hydrochloric acid of 6mol/L and cleans 24h；Suction filtration
And be washed with deionized water only, until the liquid pH of suction filtration outflow is neutrality, powder is taken out, dry, resulting black powder
It is porous CNT.
Embodiment 3
(1) it is 1 to take volume ratio:3 concentrated nitric acid (65~68wt%) and the concentrated sulfuric acid (95~98wt%), is well mixed
(100ml)；40mg CNTs are added, 10h is stirred；Suction filtration, and be washed with deionized water during the liquid pH value obtained to suction filtration is
Property；CNT is dispersed in 10ml deionized waters, the carbon nanotube suspension that carbon pipe concentration is 4mg/ml is formed；
(2) to addition 50mg KMnO in above-mentioned suspension4, lucifuge magnetic agitation 12h；By the mixed liquor liquid nitrogen after stirring
Snap frozen, is put into vacuum freeze drier and dries 36h；
(3) by the powder obtained by drying, it is transferred in quartz boat, is put into tube furnace, Ar2Under atmosphere, 700 DEG C of ablations
2h, is cooled to room temperature taking-up；Sample after ablation is put into the hydrochloric acid of 2mol/L and cleans 6h；Suction filtration, and taken out with deionized water
Diafiltration is net, and the liquid pH to suction filtration outflow is neutrality, and powder is taken out, and is dried, and resulting black powder is porous carbon nanometer
Pipe.
Claims (10)
1. a kind of preparation method of porous CNT, including：
(1) CNT is added in the mixed liquor of concentrated nitric acid and the concentrated sulfuric acid, stirs 2~24h, then suction filtration, cleaning disperses
In deionized water, carbon nanotube suspension is obtained；
(2) by KMnO4It is added in the carbon nano tube suspension in step (1), lucifuge stirring, freeze-drying obtains powder；
(3) powder that will be obtained in step (2) under inert gas conditions, take out by 400~1000 DEG C of 1.5~5h of ablation, pickling
Filter, cleaning, drying obtain porous CNT.
2. the preparation method of a kind of porous CNT according to claim 1, it is characterised in that in the step (1)
The volume ratio of concentrated nitric acid and the concentrated sulfuric acid is 1:3.
3. a kind of preparation method of porous CNT according to claim 2, it is characterised in that the matter of the concentrated nitric acid
Amount concentration is 65~68%, and the mass concentration of the concentrated sulfuric acid is 95~98%.
4. the preparation method of a kind of porous CNT according to claim 1, it is characterised in that in the step (1)
The concentration of carbon nanotube suspension is 2~6mg/ml.
5. the preparation method of a kind of porous CNT according to claim 1, it is characterised in that in the step (2)
KMnO4It is 0.1~13 with the mass ratio of CNT:1.
6. the preparation method of a kind of porous CNT according to claim 1, it is characterised in that in the step (2)
The time of lucifuge stirring is 10~24h.
7. the preparation method of a kind of porous CNT according to claim 1, it is characterised in that in the step (3)
Inert gas is N2Or Ar2。
8. the preparation method of a kind of porous CNT according to claim 1, it is characterised in that in the step (3)
Pickling is to be cleaned with excessive 0.1~10mol/L hydrochloric acid, sulfuric acid or nitric acid, and scavenging period is more than or equal to 0.5h；Clean and be：Cleaning
It is neutrality to solution.
9. the preparation method of a kind of porous CNT according to claim 1, it is characterised in that in the step (3)
The hole size of porous CNT is 0.1~80nm, and depth is 0.1-20nm.
10. the preparation method of a kind of porous CNT according to claim 1, it is characterised in that in the step (3)
Porous CNT is applied to ion battery electrode materials as the conductive frame of carrying inorganic battery electrode material.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107663633A (en) * | 2017-08-30 | 2018-02-06 | 西安理工大学 | A kind of preparation method of the silica resistance changing film of doped carbon nanometer pipe |
| CN109174074A (en) * | 2018-10-11 | 2019-01-11 | 南昌航空大学 | A kind of preparation method and applications with defect state carbon nanotube |
| CN110817846A (en) * | 2018-08-10 | 2020-02-21 | 南京大学 | Low-cost large-scale modification technology for improving conductivity and specific surface area of carbon nanotube film |
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