CN106809817B - A kind of preparation method of porous carbon nanotube - Google Patents
A kind of preparation method of porous carbon nanotube Download PDFInfo
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- CN106809817B CN106809817B CN201710032336.XA CN201710032336A CN106809817B CN 106809817 B CN106809817 B CN 106809817B CN 201710032336 A CN201710032336 A CN 201710032336A CN 106809817 B CN106809817 B CN 106809817B
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 239000002041 carbon nanotube Substances 0.000 title claims abstract description 61
- 229910021393 carbon nanotube Inorganic materials 0.000 title claims abstract description 61
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 16
- 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
- 238000003756 stirring Methods 0.000 claims abstract description 14
- 239000000725 suspension Substances 0.000 claims abstract description 14
- 239000008367 deionised water Substances 0.000 claims abstract description 11
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000002679 ablation Methods 0.000 claims abstract description 10
- 238000004140 cleaning Methods 0.000 claims abstract description 8
- 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
- 238000001035 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 9
- 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
- 238000001914 filtration Methods 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
- 239000000463 material 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
- 239000000047 product 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
- 238000011068 loading method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 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
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 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
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 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
- 239000007773 negative electrode material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000002994 raw material Substances 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
- 230000002459 sustained effect Effects 0.000 description 1
- 238000012360 testing method Methods 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 methods of porous carbon nanotube, comprising: carbon nanotube is added in the mixed liquor of concentrated nitric acid and the concentrated sulfuric acid, stirring 7~for 24 hours, it filters, cleaning is then dispersed in deionized water, obtains carbon nanotube suspension；By KMnO4It is added in carbon nano tube suspension, is protected from light stirring, be freeze-dried, obtain powder, then under inert gas conditions, 400~1000 DEG C of 1.5~5h of ablation, pickling filters, and cleaning, drying obtain porous carbon nanotube.Method of the invention is simple and easy, and safety and environmental protection is at low cost, is suitable for large-scale production, the porous carbon nanotube being prepared not only improves the specific surface area of carbon pipe, but also also improves the conductive capability of carbon nanotube.
Description
Technical field
The invention belongs to the preparation field of ion battery electrode materials, in particular to a kind of preparation side of porous carbon nanotube
Method.
Background technique
The efficient utilization and storage of the energy are always the big difficult scientific problems of energy development advancing one.During this period, lithium from
Sub- battery gets their way into people's lives as a kind of high load, 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 experiment at
Ripe, also there are many problems in the step strided forward to practical application in ion battery.Such as the electrode material in charge and discharge process
Active material is because of itself or reaction during forming unstable SEI layer consumption electrode material and electrolyte, charge and discharge cycles
Formation by-product spreads into electrolyte and dissolves and lose a part of active material in the process, dendroid dendrite puncture diaphragm makes
The advantages of both battery short circuit, the cyclical stability of battery and high specific capacity, cannot exist simultaneously.To solve this many
Problem, battery electrode material structure is always the hot spot for improving battery performance research.In commercialized lithium battery, stone
Ink is sustained without reduction Many researchers to the enthusiasm of carbon material as the negative electrode material of battery.In the article delivered, stone
The carbon materials such as black alkene, carbon nanotube, carbon black, super carbon, foam type carbon all bring the breakthrough in scientific research to ion battery.
In currently available carbon material, carbon nanotube has both electric conductivity, excellent mechanical performance, chemistry 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 applied, carbon nanotube can
The processing such as some surface hydrophilics, doping can be done, the structure of carbon nanotube only changes on atom or molecule rank scale, difficult
To carry out the modification of subsequent carbon nanotube internal structure, therefore the structure for changing carbon pipe on a larger scale has important meaning
Justice.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of preparation method of porous carbon nanotube, this method process letters
Single, originally from a wealth of sources, the porous carbon nanotube being prepared is using as loading emerging inexpensive inorganic battery electrode material
The conductive frame of (such as phosphorus (P), sulphur (S)) makes up defect of these inorganic electrode materials on electric conductivity, promotes electrode and exists
Electric conductivity, storage lithium performance in li-ion electrode materials.
Method of the invention is simple and easy, and safety and environmental protection is at low cost, is suitable for large-scale production, the porous carbon being prepared
Nanotube not only improves the specific surface area of carbon pipe, but also also improves the conductive capability of carbon nanotube.
A kind of preparation method of porous carbon nanotube of the invention, comprising:
(1) carbon nanotube is added in the mixed liquor of concentrated nitric acid and the concentrated sulfuric acid, stirring 2~for 24 hours, it filters, cleaning, then
Dispersion in deionized water, obtains carbon nanotube suspension；
(2) by KMnO4It is added in the carbon nano tube suspension in step (1), is protected from light stirring, be freeze-dried, obtain powder
End；
(3) under inert gas conditions by powder obtained in step (2), 400~1000 DEG C of 1.5~5h of ablation, pickling,
It filters or centrifugation, cleaning, drying obtains porous carbon nanotube.
The volume ratio of concentrated nitric acid and the concentrated sulfuric acid is 1:3 in the step (1).
The mass concentration of the concentrated nitric acid is 65~68%, and the mass concentration of the concentrated sulfuric acid is 95~98%.
The mixed solution total volume of the concentrated nitric acid and the concentrated sulfuric acid is 40~120ml；Concentrated nitric acid is added in the concentrated sulfuric acid when mixing
In.
The concentration of carbon nanotube suspension is 2~6mg/ml in the step (1).
KMnO in the step (2)4Mass ratio with carbon nanotube is 0.1~13:1.
The KMnO4Additional amount be 10~60mg.
Be protected from light in the step (2) stirring time be 10~for 24 hours.
Inert gas is N in the step (3)2Or A r, protection carbon nanotube are not oxidized at high temperature.
The obtained coloured product of ablation is brown color in the step (2).
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 greater than
Equal to 0.5h；It cleans are as follows: 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 carbon nanotube 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 carbon nanotube tube wall in the step (3), and these
The hole depth (perpendicular to the length direction of pipe) in hole is 0.1~20nm, and aperture (length direction for being parallel to pipe) is 0.1~80nm.
Porous carbon nanotube is as the conductive pane for loading the emerging inorganic battery electrode material of low cost in the step (3)
Frame is applied to ion battery electrode materials.
Beneficial effect
(1) presoma of the present invention using the carbon pipe and potassium permanganate reagent bought from market as material, raw material sources side
Just；Preparation method is simple, safe preparation process；
(2) contain a large amount of hole with the carbon nano tube surface that method of the invention is prepared, compared to smooth surface
Carbon nanotube improves specific surface area, while this some holes has certain depth, can be used to do the load holes of inorganic material, increase
Added can attachment activity material attachment point, and also improve the electric conductivity of electrode material as a conductive frame；Simultaneously
Due to the limitation of carbon tube frame, inorganic material can also be reduced with the contact area of electrolyte, reduce active material in electrolyte
In dissolution, be also provided with certain cyclical stability in the case where guaranteeing certain specific capacity, solve it is inorganic with phosphorus, sulphur etc.
Material has huge potentiality as the battery cathode when institute problem.
Detailed description of the invention
Fig. 1 is porous carbon nanotube low power field emission scanning electron microscope picture prepared by embodiment 1；
Fig. 2 is porous carbon nanotube high power Flied emission transmission electron microscope picture prepared by embodiment 1.
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, those skilled in the art
Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Range.
Embodiment 1
(1) taking volume ratio is the concentrated nitric acid (65~68wt%) and the concentrated sulfuric acid (95~98wt%) of 1:3, is uniformly mixed
(40ml)；40mg carbon nanotube is added, stirs 10h, filters, and is washed with deionized water to filtering during obtained liquid pH value is
Property；Carbon nanotube is taken out, is dispersed in 10ml deionized water, the carbon nanotube suspension that carbon pipe concentration is 4mg/ml is formed；
(2) 35mg KMnO is added into above-mentioned suspension4, it is protected from light magnetic agitation 12h；Mixed liquor after stirring is placed on
Liquid nitrogen is rapidly frozen in plastic test tube, after be put into the dry 18h of vacuum freeze drier；
(3) it by dry obtained fluffy powder, 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；It filters
It cleans, until the liquid pH for filtering outflow is neutrality, powder is taken out, dry, obtained final black powder is received for porous carbon
Mitron.
Embodiment 2
(1) taking volume ratio is the concentrated nitric acid (65~68wt%) and the concentrated sulfuric acid (95~98wt%) of 1:3, is uniformly mixed
(50ml)；40mg carbon nanotube is added, stirs 10h, filters, and is washed with deionized water to filtering during obtained liquid pH value is
Property；Carbon nanotube is taken out, is dispersed in 10ml deionized water, the carbon nanotube suspension that carbon pipe concentration is 4mg/ml is formed；
(2) 40mg KMnO is added into above-mentioned suspension4, it is protected from light magnetic agitation 12h；By the mixed liquor liquid nitrogen after stirring
It is rapidly frozen, it is dry for 24 hours to be put into vacuum freeze drier；
(3) it by dry obtained fluffy powder, 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 is cleaned for 24 hours；It filters
And be washed with deionized water, until the liquid pH for filtering outflow is neutrality, powder is taken out, dry, obtained black powder
For porous carbon nanotube.
Embodiment 3
(1) taking volume ratio is the concentrated nitric acid (65~68wt%) and the concentrated sulfuric acid (95~98wt%) of 1:3, is uniformly mixed
(100ml)；40mg carbon nanotube is added, stirs 10h；It filters, and is washed with deionized water to filtering during obtained liquid pH value is
Property；Carbon nanotube is dispersed in 10ml deionized water, the carbon nanotube suspension that carbon pipe concentration is 4mg/ml is formed；
(2) 50mg KMnO is added into above-mentioned suspension4, it is protected from light magnetic agitation 12h；By the mixed liquor liquid nitrogen after stirring
It is rapidly frozen, is put into the dry 36h of vacuum freeze drier；
(3) it by dry obtained powder, 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；It filters, and is taken out with deionized water
Diafiltration is net, until the liquid pH for filtering outflow is neutrality, powder is taken out, dry, and obtained black powder is porous carbon nanometer
Pipe.
Claims (10)
1. a kind of preparation method of porous carbon nanotube, comprising:
(1) carbon nanotube is added in the mixed liquor of concentrated nitric acid and the concentrated sulfuric acid, stirring 2~for 24 hours, it filters, then cleaning disperses
In deionized water, carbon nanotube suspension is obtained；
(2) by KMnO4It is added in the carbon nano tube suspension in step (1), is protected from light stirring, be freeze-dried, obtain powder；
(3) under inert gas conditions by powder obtained in step (2), 400~1000 DEG C of 1.5~5h of ablation, pickling are taken out
Filter, cleaning, drying obtain porous carbon nanotube.
2. a kind of preparation method of porous carbon nanotube according to claim 1, which is characterized 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 carbon nanotube according to claim 2, which is characterized in that the matter of the concentrated nitric acid
Measuring concentration is 65~68%, and the mass concentration of the concentrated sulfuric acid is 95~98%.
4. a kind of preparation method of porous carbon nanotube according to claim 1, which is characterized in that in the step (1)
The concentration of carbon nanotube suspension is 2~6mg/ml.
5. a kind of preparation method of porous carbon nanotube according to claim 1, which is characterized in that in the step (2)
KMnO4Mass ratio with carbon nanotube is 0.1~13:1.
6. a kind of preparation method of porous carbon nanotube according to claim 1, which is characterized in that in the step (2)
Be protected from light stirring time be 10~for 24 hours.
7. a kind of preparation method of porous carbon nanotube according to claim 1, which is characterized in that in the step (3)
Inert gas is Ar.
8. a kind of preparation method of porous carbon nanotube according to claim 1, which is characterized 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；It cleans are as follows: cleaning
It is neutrality to solution.
9. a kind of preparation method of porous carbon nanotube according to claim 1, which is characterized in that in the step (3)
The hole size of porous carbon nanotube is 0.1~80nm, depth 0.1-20nm.
10. a kind of preparation method of porous carbon nanotube according to claim 1, which is characterized in that in the step (3)
Porous carbon nanotube is applied to ion battery electrode materials as the conductive frame of carrying inorganic battery electrode material.
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| CN107663633B (en) * | 2017-08-30 | 2019-09-27 | 西安理工大学 | A kind of preparation method of the silica resistance changing film of doped carbon nanometer pipe |
| CN110817846B (en) * | 2018-08-10 | 2022-08-12 | 南京大学 | Low-cost large-scale modification technology for improving conductivity and specific surface area of carbon nanotube film |
| CN109174074B (en) * | 2018-10-11 | 2021-06-08 | 南昌航空大学 | Application of carbon nano tube with defect state |
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