CN104386668A - Method for preparing coiled carbon nano material under nickel nano catalytic actions - Google Patents
Method for preparing coiled carbon nano material under nickel nano catalytic actions Download PDFInfo
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- CN104386668A CN104386668A CN201410628627.1A CN201410628627A CN104386668A CN 104386668 A CN104386668 A CN 104386668A CN 201410628627 A CN201410628627 A CN 201410628627A CN 104386668 A CN104386668 A CN 104386668A
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Abstract
The invention provides a method for preparing a coiled carbon nano material under nickel nano catalytic actions, belonging to the field of nano carbon material preparation. The method comprises the following steps: a) reacting C4H4O6KNa.4H2O and NiCl2.4H2O in a water solution for 5-10 minutes, filtering, washing the filter cake with water to a neutral state, and washing with anhydrous ethanol in a Soxhlet extractor for 1-4 hours; b) drying the filter cake obtained in the step a) in a vacuum drying oven at 80-100 DEG C for 2-4 hours to obtain nickel tartrate powder; c) putting the nickel tartrate powder obtained in the step b) in a pipe furnace, carrying out heat treatment at 400-800 DEG C in a hydrogen or argon atmosphere for 30-60 minutes, and carrying out catalytic cracking in an acetylene atmosphere for 1 hour; and after the reaction finishes, carrying out furnace cooling to room temperature in an argon atmosphere to obtain the coiled carbon nano material. The method has the advantages of simple technique and short reaction time, is convenient to operate, enhances the production efficiency and lowers the production cost.
Description
Technical field
The invention belongs to nano-carbon material preparation field, be specifically related to a kind of method that nickel nano-catalytic prepares spiral carbon nanomaterial.
Background technology
Spiral carbon nanomaterial is a kind of carbon material with Novel Microstructure, there is high bandwidth microwave absorbing, special electric property and superior mechanical property, be now widely used in the fields such as hydrogen storage material, absorption of electromagnetic wave, electrode materials, feds, fuel cell.
Spiral carbon nanomaterial mainly comprises spiral carbon nanotubes, spiral carbon nanofiber etc., currently reported employing transition metal nanoparticles is as catalyzer, catalytic pyrolysis acetylene gas synthesizes spiral carbon nanofiber or spiral carbon nanotubes at a lower temperature, but in same system, the research report obtaining the spiral carbon nanomaterial of different nanostructure according to the regulation and control of different needs is also less.(the Symmetrictwisted carbon filament s formed from but adiene-1 such as V.V.Chesnokov, 3 on Ni-Cu/MgOcatalyst:growth regularities and mechanism, Journal of Molecular Catalysis:A, 2000, 158 (1): 267-270.) with Ni-Cu/MgO composite nanoparticles for catalyzer, it is 450 DEG C at cracking temperature, hydrogen and argon gas are under the condition of impurity gas, prepare spiral carbon nanomaterial, but the purity of the spiral carbon nanomaterial obtained is lower, and spiral carbon nanofiber prepared by Cu catalyst system is non-crystalline state, pyroprocessing is under an inert gas needed to obtain carbon fiber, which limits the widespread use of the method.(the Symmetry-related growthof carbon nanocoils from Ni-P based alloyparticles such as D.Y.Ding, Journal of Applied Physics, 2004,95 (9): 5006-5009.) with Ni-P alloy for catalyzer, with argon gas and nitrogen for impurity gas, under 500 ~ 700 DEG C of reaction conditionss, prepare spiral carbon nanomaterial, but the method can use poisonous catalyzer, and productive rate is low, poor reproducibility.(the Catalytic effects of metal carb ides such as S.Motojima, oxides and Ni single crystal onthe vapor growthof micro-coiled carbon fibers, Carbon, 1996, 34 (3): 289-296.) respectively using stainless steel plate and Fe-Ni-Cr-Mo-Mn-Sn alloy powder as catalyzer, with argon gas, nitrogen and sulfurous gas thiophene are impurity gas, spiral carbon nanomaterial is prepared under 700 ~ 800 DEG C of reaction conditionss, but, there is poor reproducibility in the method, productive rate is low, catalyst preparing is loaded down with trivial details, the defects such as catalyzer is poisonous, be unfavorable for extensively promoting and application.
Summary of the invention
The present invention is directed to the defect that background technology exists, propose a kind of method that nickel nano-catalytic prepares spiral carbon nanomaterial.The method regulates and controls the structure of spiral carbon nanomaterial by regulation and control cracking temperature, and technique is simple, and production cost is low, and productive rate is high, the spiral carbon nanomaterial excellent property obtained.
Technical scheme of the present invention is as follows:
A preparation method for nickel nano material, comprises the following steps:
Step 1:C
4h
4o
6kNa4H
2o and NiCl
24H
2o reacts 5 ~ 10min in aqueous, and filter, filter cake is first washed with water to neutrality, then in apparatus,Soxhlet's, uses absolute ethanol washing 1 ~ 4h, to remove residual organic impurity;
Step 2: by the filter cake of step 1 gained dry 2 ~ 4h at 80 ~ 100 DEG C in vacuum drying oven, obtain tartrate nickel by powder;
Step 3: tartrate nickel by powder step 2 obtained is placed in tube furnace, at 400 ~ 800 DEG C, thermal treatment 30 ~ 60min under hydrogen or argon gas atmosphere, is then cooled to room temperature with stove and obtains described nickel nano material.
Wherein, the gas flow of hydrogen described in step 3 or argon gas is 30 ~ 35mL/min.
Nickel nano-catalytic prepares a method for spiral carbon nanomaterial, comprises the following steps:
Step 1:C
4h
4o
6kNa4H
2o and NiCl
24H
2o reacts 5 ~ 10min in aqueous, and filter, filter cake is first washed with water to neutrality, then in apparatus,Soxhlet's, uses absolute ethanol washing 1 ~ 4h, to remove residual organic impurity;
Step 2: by the filter cake of step 1 gained dry 2 ~ 4h at 80 ~ 100 DEG C in vacuum drying oven, obtain tartrate nickel by powder;
Step 3: tartrate nickel by powder step 2 obtained is placed in tube furnace, at 400 ~ 800 DEG C, thermal treatment 30 ~ 60min under hydrogen or argon gas atmosphere; After thermal treatment terminates, close hydrogen or argon gas, pass into acetylene gas, at 400 ~ 800 DEG C, catalytic pyrolysis 1h under acetylene gas atmosphere; Reaction terminate after under an argon atmosphere with stove Temperature fall to room temperature, namely obtain described spiral carbon nanomaterial.
Wherein, the gas flow of hydrogen described in step 3 or argon gas is 30 ~ 35mL/min, and the gas flow of acetylene is 50 ~ 55mL/min.
Preferably, the thermal treatment described in step 3 and the temperature of catalytic pyrolysis are 500 ~ 600 DEG C.
As further preferred version, the temperature of the thermal treatment described in step 3 and catalytic pyrolysis is 550 DEG C.
Beneficial effect of the present invention is:
1, the maximum output of current reported catalyst preparing spiral carbon nanomaterial is 21269.6% (Synthesis of Plait-Like Carbon Nanocoils in Ultrahigh Yield, andTheirMicrowaveAbsorption Properties, J.Phys.Chem.C 2008,112,10061 – 10067), and the present invention's productive rate under 550 DEG C of conditions reaches 22391.0%, compare existing maximum output and have larger lifting, can mass industrialized production be realized.
2, the present invention adopts C
4h
4o
6kNa4H
2o and NiCl
24H
2o is reactant, prepares tartrate nickel, then in a hydrogen atmosphere tartrate nickel is decomposed into nickel nanometer, finally adopts the nano nickel particles catalyzing acetylene of generation to be cracked into spiral carbon nanomaterial.The inventive method prepares that the productive rate of spiral carbon nanomaterial is high, excellent property; And the cheaper starting materials adopted is easy to get, without the need to using high-temperature high-pressure apparatus, technique is simple, easy to operate, asepsis environment-protecting, and safety is easily controlled, and can realize mass industrialized production.
3, the hydrogen passed into during thermolysis tartrate nickel of the present invention or argon gas are just a kind of decomposes atmosphere, instead of the reductive agent of reaction, and reaction process is simple and easy to control, and the reaction times is short.
4, the spiral carbon nanomaterial that the inventive method prepares has lightweight, loose feature, can be widely used in hydrogen storage material, ultracapacitor, EMI shield and stealth material field.
Accompanying drawing explanation
Fig. 1 is the scanning electron microscope diagram (SEM) of the nickel nanometer that the embodiment of the present invention 1 prepares.Wherein, the SEM figure that (a) is magnification when being 20000; (b) to be magnification be 160000 SEM figure.
Fig. 2 is the scanning electron microscope diagram (SEM) of the nickel nanometer that the embodiment of the present invention 2 prepares.Wherein, the SEM figure that (a) is magnification when being 20000; (b) to be magnification be 160000 SEM figure.
Fig. 3 is the scanning electron microscope diagram (SEM) of the nickel nanometer that the embodiment of the present invention 3 prepares.Wherein, the SEM figure that (a) is magnification when being 20000; (b) to be magnification be 160000 SEM figure.
Fig. 4 is the scanning electron microscope diagram (SEM) of the spiral carbon nanomaterial that the embodiment of the present invention 4 prepares.Wherein, the SEM figure that (a) is magnification when being 80000; (b) to be magnification be 160000 SEM figure.
Fig. 5 is the scanning electron microscope diagram (SEM) of the spiral carbon nanomaterial that the embodiment of the present invention 5 prepares.Wherein, the SEM figure that (a) is magnification when being 80000; (b) to be magnification be 160000 SEM figure.
Fig. 6 is the scanning electron microscope diagram (SEM) of the spiral carbon nanomaterial that the embodiment of the present invention 6 prepares.Wherein, the SEM figure that (a) is magnification when being 80000; (b) to be magnification be 160000 SEM figure.
Fig. 7 is the curve that the embodiment of the present invention prepares the yield with temperature change of spiral carbon nanomaterial.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is introduced further.
Embodiment 1
A preparation method for nickel nano material, comprises the following steps:
Step 1: by the C of 0.1mol
4h
4o
6kNa4H
2o is dissolved in 100mL distilled water, obtains the C of 1mol/L
4h
4o
6kNa solution, by the NiCl of 0.1mol
24H
2o is dissolved in 100mL distilled water, obtains the NiCl of 1mol/L
2solution;
Step 2: under agitation, the NiCl that step 1 is prepared
2solution is slowly added drop-wise to the C that step 1 is prepared
4h
4o
6in KNa solution, solution becomes light green from colourless, filters after reaction 5min, and filter cake first uses distilled water wash 3 times to neutral, then in apparatus,Soxhlet's, uses absolute ethanol washing 3h, to remove residual organic impurity;
Step 3: by the filter cake of step 2 gained dry 3h at 90 DEG C in vacuum drying oven, obtain jade-green tartrate nickel by powder;
Step 4: tartrate nickel by powder step 3 obtained is laid in quartz boat, then the quartz boat that tartrate nickel by powder is housed is put into tube furnace, is evacuated to below 0.1Pa, passes into hydrogen reach normal pressure to gas atmosphere with the speed of 30mL/min; Slowly be warming up to 500 DEG C with the temperature rise rate of 5 DEG C/min, at 500 DEG C, be incubated 1h, be then cooled to room temperature with stove, namely obtain described nickel nano material.
Fig. 1 is the scanning electron microscope diagram (SEM) of the nickel nanometer that the embodiment of the present invention 1 prepares.As shown in Figure 1, the nickel nano material that embodiment 1 obtains is in block, and quality is more loose, and surface is with the nano particle of nickel, but size is uneven.
Embodiment 2
A preparation method for nickel nano material, comprises the following steps:
Step 1: by the C of 0.1mol
4h
4o
6kNa4H
2o is dissolved in 100mL distilled water, obtains the C of 1mol/L
4h
4o
6kNa solution, by the NiCl of 0.1mol
24H
2o is dissolved in 100mL distilled water, obtains the NiCl of 1mol/L
2solution;
Step 2: under agitation, the NiCl that step 1 is prepared
2solution is slowly added drop-wise to the C that step 1 is prepared
4h
4o
6in KNa solution, solution becomes light green from colourless, filters after reaction 5min, and filter cake first uses distilled water wash 3 times to neutral, then in apparatus,Soxhlet's, uses absolute ethanol washing 3h, to remove residual organic impurity;
Step 3: by the filter cake of step 2 gained dry 3h at 90 DEG C in vacuum drying oven, obtain jade-green tartrate nickel by powder;
Step 4: tartrate nickel by powder step 3 obtained is laid in quartz boat, then the quartz boat that tartrate nickel by powder is housed is put into tube furnace, is evacuated to below 0.1Pa, passes into hydrogen reach normal pressure to gas atmosphere with the speed of 30mL/min; Slowly be warming up to 600 DEG C with the temperature rise rate of 5 DEG C/min, at 600 DEG C, be incubated 1h, be then cooled to room temperature with stove, namely obtain described nickel nano material.
Fig. 2 is the scanning electron microscope diagram (SEM) of the nickel nanometer that the embodiment of the present invention 2 prepares.As shown in Figure 2, the nickel nano material that embodiment 2 obtains is in block, and lumphy structure is tight, having good uniformity of surface nickel nano particle.
Embodiment 3
A preparation method for nickel nano material, comprises the following steps:
Step 1: by the C of 0.1mol
4h
4o
6kNa4H
2o is dissolved in 100mL distilled water, obtains the C of 1mol/L
4h
4o
6kNa solution, by the NiCl of 0.1mol
24H
2o is dissolved in 100mL distilled water, obtains the NiCl of 1mol/L
2solution;
Step 2: under agitation, the NiCl that step 1 is prepared
2solution is slowly added drop-wise to the C that step 1 is prepared
4h
4o
6in KNa solution, solution becomes light green from colourless, filters after reaction 5min, and filter cake first uses distilled water wash 3 times to neutral, then in apparatus,Soxhlet's, uses absolute ethanol washing 3h, to remove residual organic impurity;
Step 3: by the filter cake of step 2 gained dry 3h at 90 DEG C in vacuum drying oven, obtain jade-green tartrate nickel by powder;
Step 4: tartrate nickel by powder step 3 obtained is laid in quartz boat, then the quartz boat that tartrate nickel by powder is housed is put into tube furnace, is evacuated to below 0.1Pa, passes into hydrogen reach normal pressure to gas atmosphere with the speed of 30mL/min; Slowly be warming up to 700 DEG C with the temperature rise rate of 5 DEG C/min, at 700 DEG C, be incubated 1h, be then cooled to room temperature with stove, namely obtain described nickel nano material.
Fig. 3 is the scanning electron microscope diagram (SEM) of the nickel nanometer that the embodiment of the present invention 3 prepares.As shown in Figure 3, the nickel nano material that embodiment 3 obtains is in block, and lumphy structure is tight, having good uniformity of surface nickel nano particle.
Embodiment 4
Nickel nano-catalytic prepares a method for spiral carbon nanomaterial, comprises the following steps:
Step 1: by the C of 0.1mol
4h
4o
6kNa4H
2o is dissolved in 100mL distilled water, obtains the C of 1mol/L
4h
4o
6kNa solution, by the NiCl of 0.1mol
24H
2o is dissolved in 100mL distilled water, obtains the NiCl of 1mol/L
2solution;
Step 2: under agitation, the NiCl that step 1 is prepared
2solution is slowly added drop-wise to the C that step 1 is prepared
4h
4o
6in KNa solution, solution becomes light green from colourless, filters after reaction 5min, and filter cake first uses distilled water wash 3 times to neutral, then in apparatus,Soxhlet's, uses absolute ethanol washing 3h, to remove residual organic impurity;
Step 3: by the filter cake of step 2 gained dry 3h at 90 DEG C in vacuum drying oven, obtain jade-green tartrate nickel by powder;
Step 4: tartrate nickel by powder step 3 obtained is laid in quartz boat, then the quartz boat that tartrate nickel by powder is housed is put into tube furnace, is evacuated to below 0.1Pa, passes into hydrogen reach normal pressure to gas atmosphere with the speed of 30mL/min; Slowly be warming up to 500 DEG C with the temperature rise rate of 5 DEG C/min, at 500 DEG C, be incubated 30min; After insulation terminates, close hydrogen, pass into acetylene gas 30min with the speed of 55mL/min; Finally at 500 DEG C, catalytic pyrolysis 1h under acetylene gas atmosphere; Reaction terminate after under an argon atmosphere with stove Temperature fall to room temperature, namely obtain described spiral carbon nanomaterial.
Fig. 4 is the scanning electron microscope diagram (SEM) of the spiral carbon nanomaterial of the nickel that the embodiment of the present invention 4 prepares.As shown in Figure 4, the spiral carbon nanomaterial that embodiment 4 obtains comprises spiral carbon nanotubes and spiral carbon nanofiber, consistent appearance, and spirality is good, and carbon nanotube density is less.
Embodiment 5
Nickel nano-catalytic prepares a method for spiral carbon nanomaterial, comprises the following steps:
Step 1: by the C of 0.1mol
4h
4o
6kNa4H
2o is dissolved in 100mL distilled water, obtains the C of 1mol/L
4h
4o
6kNa solution, by the NiCl of 0.1mol
24H
2o is dissolved in 100mL distilled water, obtains the NiCl of 1mol/L
2solution;
Step 2: under agitation, the NiCl that step 1 is prepared
2solution is slowly added drop-wise to the C that step 1 is prepared
4h
4o
6in KNa solution, solution becomes light green from colourless, filters after reaction 5min, and filter cake first uses distilled water wash 3 times to neutral, then in apparatus,Soxhlet's, uses absolute ethanol washing 3h, to remove residual organic impurity;
Step 3: by the filter cake of step 2 gained dry 3h at 90 DEG C in vacuum drying oven, obtain jade-green tartrate nickel by powder;
Step 4: tartrate nickel by powder step 3 obtained is laid in quartz boat, then the quartz boat that tartrate nickel by powder is housed is put into tube furnace, is evacuated to below 0.1Pa, passes into hydrogen reach normal pressure to gas atmosphere with the speed of 30mL/min; Slowly be warming up to 550 DEG C with the temperature rise rate of 5 DEG C/min, at 550 DEG C, be incubated 30min; After insulation terminates, close hydrogen, pass into acetylene gas 30min with the speed of 55mL/min; Finally at 550 DEG C, catalytic pyrolysis 1h under acetylene gas atmosphere; Reaction terminate after under an argon atmosphere with stove Temperature fall to room temperature, namely obtain described spiral carbon nanomaterial.
Fig. 5 is the scanning electron microscope diagram (SEM) of the spiral carbon nanomaterial of the nickel that the embodiment of the present invention 5 prepares.As shown in Figure 5, the spiral carbon nanomaterial that embodiment 5 obtains comprises spiral carbon nanotubes and spiral carbon nanofiber, consistent appearance, and spirality is good, and carbon nanotube density is high.
Embodiment 6
Nickel nano-catalytic prepares a method for spiral carbon nanomaterial, comprises the following steps:
Step 1: by the C of 0.1mol
4h
4o
6kNa4H
2o is dissolved in 100mL distilled water, obtains the C of 1mol/L
4h
4o
6kNa solution, by the NiCl of 0.1mol
24H
2o is dissolved in 100mL distilled water, obtains the NiCl of 1mol/L
2solution;
Step 2: under agitation, the NiCl that step 1 is prepared
2solution is slowly added drop-wise to the C that step 1 is prepared
4h
4o
6in KNa solution, solution becomes light green from colourless, filters after reaction 5min, and filter cake first uses distilled water wash 3 times to neutral, then in apparatus,Soxhlet's, uses absolute ethanol washing 3h, to remove residual organic impurity;
Step 3: by the filter cake of step 2 gained dry 3h at 90 DEG C in vacuum drying oven, obtain jade-green tartrate nickel by powder;
Step 4: tartrate nickel by powder step 3 obtained is laid in quartz boat, then the quartz boat that tartrate nickel by powder is housed is put into tube furnace, is evacuated to below 0.1Pa, passes into hydrogen reach normal pressure to gas atmosphere with the speed of 30mL/min; Slowly be warming up to 600 DEG C with the temperature rise rate of 5 DEG C/min, at 600 DEG C, be incubated 30min; After insulation terminates, close hydrogen, pass into acetylene gas 30min with the speed of 55mL/min; Finally at 600 DEG C, catalytic pyrolysis 1h under acetylene gas atmosphere; Reaction terminate after under an argon atmosphere with stove Temperature fall to room temperature, namely obtain described spiral carbon nanomaterial.
Fig. 6 is the scanning electron microscope diagram (SEM) of the spiral carbon nanomaterial of the nickel that the embodiment of the present invention 6 prepares.As shown in Figure 6, the spiral carbon nanomaterial topographical difference that embodiment 6 obtains is comparatively large, and quality product declines, wherein containing more micron order impurity.
Fig. 7 is the curve that the embodiment of the present invention prepares the yield with temperature change of spiral carbon nanomaterial, as shown in Figure 7, adopt the inventive method at 550 DEG C, to prepare the productive rate of spiral carbon nanomaterial up to 22391.0%, compare productive rate maximum at present and be greatly improved.
Claims (6)
1. a preparation method for nickel nano material, comprises the following steps:
Step 1:C
4h
4o
6kNa4H
2o and NiCl
24H
2o reacts 5 ~ 10min in aqueous, and filter, filter cake is first washed with water to neutrality, then in apparatus,Soxhlet's, uses absolute ethanol washing 1 ~ 4h;
Step 2: by the filter cake of step 1 gained dry 2 ~ 4h at 80 ~ 100 DEG C in vacuum drying oven, obtain tartrate nickel by powder;
Step 3: tartrate nickel by powder step 2 obtained is placed in tube furnace, at 400 ~ 800 DEG C, thermal treatment 30 ~ 60min under hydrogen or argon gas atmosphere, is then cooled to room temperature with stove and obtains described nickel nano material.
2. the preparation method of nickel nano material according to claim 1, is characterized in that, the gas flow of hydrogen described in step 3 or argon gas is 30 ~ 35mL/min.
3. nickel nano-catalytic prepares a method for spiral carbon nanomaterial, comprises the following steps:
Step 1:C
4h
4o
6kNa4H
2o and NiCl
24H
2o reacts 5 ~ 10min in aqueous, and filter, filter cake is first washed with water to neutrality, then in apparatus,Soxhlet's, uses absolute ethanol washing 1 ~ 4h;
Step 2: by the filter cake of step 1 gained dry 2 ~ 4h at 80 ~ 100 DEG C in vacuum drying oven, obtain tartrate nickel by powder;
Step 3: tartrate nickel by powder step 2 obtained is placed in tube furnace, at 400 ~ 800 DEG C, thermal treatment 30 ~ 60min under hydrogen or argon gas atmosphere; After thermal treatment terminates, close hydrogen or argon gas, pass into acetylene gas, at 400 ~ 800 DEG C, catalytic pyrolysis 1h under acetylene gas atmosphere; Reaction terminate after under an argon atmosphere with stove Temperature fall to room temperature, namely obtain described spiral carbon nanomaterial.
4. nickel nano-catalytic according to claim 3 prepares the method for spiral carbon nanomaterial, it is characterized in that, the gas flow of hydrogen described in step 3 or argon gas is 30 ~ 35mL/min, and the gas flow of described acetylene is 50 ~ 55mL/min.
5. nickel nano-catalytic according to claim 3 prepares the method for spiral carbon nanomaterial, it is characterized in that, the temperature of the thermal treatment described in step 3 and catalytic pyrolysis is 500 ~ 600 DEG C.
6. nickel nano-catalytic according to claim 5 prepares the method for spiral carbon nanomaterial, it is characterized in that, the temperature of the thermal treatment described in step 3 and catalytic pyrolysis is 550 DEG C.
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CN109046461A (en) * | 2018-08-07 | 2018-12-21 | 四川理工学院 | The method that a kind of preparation method of sulfur-bearing complex compound catalyst and its catalysis prepare spiral nanometer carbon fiber |
CN110642240A (en) * | 2019-09-23 | 2020-01-03 | 大连理工大学 | Method for synthesizing high-purity carbon nanocoil by using composite catalyst formed on basis of multiple small-size catalysts |
CN112264073A (en) * | 2020-10-29 | 2021-01-26 | 电子科技大学 | Helical structure C3N4Preparation method of nanofiber photocatalyst |
CN113072061A (en) * | 2021-03-02 | 2021-07-06 | 电子科技大学 | Preparation method of conductive additive carbon nanotube array of lithium ion battery anode |
CN113233443A (en) * | 2021-04-22 | 2021-08-10 | 电子科技大学 | Preparation method of fluorinated spiral carbon nanotube and application of fluorinated spiral carbon nanotube in lithium primary battery |
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CN110642240A (en) * | 2019-09-23 | 2020-01-03 | 大连理工大学 | Method for synthesizing high-purity carbon nanocoil by using composite catalyst formed on basis of multiple small-size catalysts |
CN110642240B (en) * | 2019-09-23 | 2022-05-27 | 大连理工大学 | Method for synthesizing high-purity carbon nanocoil by using composite catalyst formed on basis of multiple small-size catalysts |
CN112264073A (en) * | 2020-10-29 | 2021-01-26 | 电子科技大学 | Helical structure C3N4Preparation method of nanofiber photocatalyst |
CN112264073B (en) * | 2020-10-29 | 2021-12-03 | 电子科技大学 | Helical structure C3N4Preparation method of nanofiber photocatalyst |
CN113072061A (en) * | 2021-03-02 | 2021-07-06 | 电子科技大学 | Preparation method of conductive additive carbon nanotube array of lithium ion battery anode |
CN113233443A (en) * | 2021-04-22 | 2021-08-10 | 电子科技大学 | Preparation method of fluorinated spiral carbon nanotube and application of fluorinated spiral carbon nanotube in lithium primary battery |
CN115260559A (en) * | 2022-07-25 | 2022-11-01 | 电子科技大学长三角研究院(湖州) | Flexible mechanical sensor based on graphene in-situ growth spiral carbon fiber and preparation method thereof |
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