CN109585184A - Metallic single-wall carbon nano-tube-graphene aerogel combination electrode material preparation method - Google Patents

Metallic single-wall carbon nano-tube-graphene aerogel combination electrode material preparation method Download PDF

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CN109585184A
CN109585184A CN201811344534.0A CN201811344534A CN109585184A CN 109585184 A CN109585184 A CN 109585184A CN 201811344534 A CN201811344534 A CN 201811344534A CN 109585184 A CN109585184 A CN 109585184A
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tube
carbon nano
wall carbon
electrode material
metallic single
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CN109585184B (en
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纪冠丞
张磊
李季
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Jiangxi Acer Baixin Materials Ltd By Share Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/84Processes for the manufacture of hybrid or EDL capacitors, or components thereof
    • H01G11/86Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22Electrodes
    • H01G11/24Electrodes characterised by structural features of the materials making up or comprised in the electrodes, e.g. form, surface area or porosity; characterised by the structural features of powders or particles used therefor
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22Electrodes
    • H01G11/30Electrodes characterised by their material
    • H01G11/32Carbon-based
    • H01G11/36Nanostructures, e.g. nanofibres, nanotubes or fullerenes
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/13Energy storage using capacitors

Abstract

Metallic single-wall carbon nano-tube-graphene aerogel combination electrode material preparation method, it is related to a kind of preparation method of electrode material.The present invention is to solve existing graphene and the lower technical problem of carbon nano-tube combination electrode material specific capacitance.This method is as follows: one, pre-processing single-walled carbon nanotube;Two, the enrichment of metallic single-wall carbon nano-tube;Three, the preparation of composite aerogel;Four, the preparation of combination electrode electric material.The incorporation of metallic single-wall carbon nano-tube of the present invention, effectively improve the electric conductivity and specific capacitance of combination electrode material, and the volume production of certain scale may be implemented in the electrode material, these are that further application provides bigger possibility to metallic single-wall carbon nano-tube-graphene aerogel combination electrode material.The invention belongs to the preparation fields of electrode material.

Description

The preparation of metallic single-wall carbon nano-tube-graphene aerogel combination electrode material Method
Technical field
Of the invention is related to a kind of preparation method of electrode material.
Background technique
Graphene is a kind of a kind of New Two Dimensional graphite platelet material with unique space net structure.By graphene It is loose porous to carry out a series of obtained graphene aerogels that handle, has big specific surface area, and lead by the excellent of its Electrically it is widely used as battery electrode material.For example, the graphite being prepared in 103258656 A of granted patent CN In alkene and carbon nano-tube combination electrode material, there is certain electrical stability, but specific capacitance is lower, has in practical applications Significant limitation.At the same time, the metallic single-wall carbon nano-tube for being similarly nano-carbon material has more excellent conduction Property and stability, are expected to obtain in Material Field as nm-class conducting wire commonly used.However, about metallic single-wall carbon nanometer The application progress of pipe is more slow, and in a short time, the metallic single-wall carbon nano-tube of high-purity is difficult to realize scale of mass production, It is unable to satisfy application demand at this stage.
Summary of the invention
The purpose of the present invention is to solve existing graphenes and the lower skill of carbon nano-tube combination electrode material specific capacitance Art problem provides a kind of preparation method of metallic single-wall carbon nano-tube-graphene aerogel combination electrode material.
Metallic single-wall carbon nano-tube-graphene aerogel combination electrode material preparation method according to the following steps into Row:
One, single-walled carbon nanotube is pre-processed:
10-60mg is handled into 1.5- in 350 DEG C of -380 DEG C of calcinations using the single-walled carbon nanotube of arc discharge method preparation 2.5h, then acidification 24-36h is carried out with concentrated acid, then it is then added to the imidazole radicals ionic liquid that 250mL mass concentration is 20% In the aqueous solution of body, ultrasonication 12-24h carries out ultracentrifugation processing under the conditions of 15000-25000rpm/min, takes Clear liquid;
The concentrated acid be concentration be 12mol/L concentrated hydrochloric acid, concentration be 16mol/L concentrated nitric acid, concentration be 12mol/L's The concentrated sulfuric acid that concentrated hydrochloric acid and concentration are 18mol/L arbitrarily than the mixed liquor of composition or concentration be 16mol/L concentrated nitric acid and concentration For 18mol/L the concentrated sulfuric acid arbitrarily than the mixed liquor of composition;
Two, the enrichment of metallic single-wall carbon nano-tube:
It is added in supernatant using the NaOH or KOH solution that concentration is 6mol/L, and under conditions of 60 DEG C of oil bath, Stirring 72 hours, the metallic single-wall carbon nano-tube for selectively dispersing to obtain is precipitated from solution, is depressurized and is taken out using sand core funnel Filter, and be dried in vacuo for 24 hours under the conditions of 60 DEG C, obtain metallic single-wall carbon nano-tube powder;
Three, the preparation of composite aerogel:
10mg metallic single-wall carbon nano-tube powder is added every time into uniform and stable graphene oxide dispersion to gold The additional amount of attribute single pipe powder is 40-60mg, wherein the matter of metallic single-wall carbon nano-tube and graphene oxide It is molten that the sodium bicarbonate that concentration is 2mol/L is added dropwise than being 1:0.5-3, ultrasound 10-15h under conditions of frequency is 60-80Hz in amount It is 8.6-9.6 that liquid, which adjusts pH value, and 2mg ascorbic acid, ethylenediamine or NaHSO is added4, in 80 DEG C of oil bath heating 20h, obtain graphite Alkene hydrogel, frozen dried 72h obtain metallic single-wall carbon nano-tube-graphene composite aerogel;
Four, the preparation of combination electrode electric material:
Electrode is made in metallic single-wall carbon nano-tube-graphene composite aerogel compressing tablet process, and is immersed in mole dense Degree is 18-30h in the potassium hydroxide electrolyte of 6mol/L to get metallic single-wall carbon nano-tube-graphene aerogel compound electric Pole material.
Imidazolium ionic liquid described in step 1 is 3- normal-butyl -1- methylimidazole borofluoride.
The beneficial effects of the present invention are:
(1) effective as selective dispersion is carried out to single-walled carbon nanotube using imidazolium ionic liquid, by a certain amount of, tool There is the metallic single-wall carbon nano-tube of excellent electrical properties to screen;
(2) by ultrasonic treatment, metallic single-wall carbon nano-tube is uniformly dispersed among graphene solution, Ke Yi Play the role of good skeletal support to aeroge in structure, reduces the reunion generated between graphene due to intermolecular force Effect reduces electrode resistance;
(3) incorporation of metallic single-wall carbon nano-tube effectively improves the electric conductivity and specific capacitance of combination electrode material, And the volume production of certain scale may be implemented in the electrode material, these are that metallic single-wall carbon nano-tube-graphene aerogel is multiple Further application provides bigger possibility to composite electrode material.
Therefore, the metallic single-wall carbon nano-tube being prepared in the present invention-graphene aerogel combination electrode material will The advantages of the two, combines, hence it is evident that improves the electric property of electrode material, improves the stability of material, and can be shorter It largely prepares in time to meet application demand.
Detailed description of the invention
Fig. 1 is the ultraviolet of the metallic single-wall carbon nano-tube in present invention experiment one after ionic liquid selectively dispersion Visible and near infrared spectrum figure;
Fig. 2 be the present invention experiment one in metallic single-wall carbon nano-tube-graphene aerogel combination electrode material in difference Constant current charge-discharge curve under current density;
Fig. 3 is metallic single-wall carbon nano-tube-graphene aerogel macroscopic view picture in present invention experiment one.
Specific embodiment
The technical solution of the present invention is not limited to the following list, further includes between each specific embodiment Any combination.
Specific embodiment 1:
In present embodiment metallic single-wall carbon nano-tube-graphene aerogel combination electrode material preparation method according to Following steps carry out:
One, single-walled carbon nanotube is pre-processed:
10-60mg is handled into 1.5- in 350 DEG C of -380 DEG C of calcinations using the single-walled carbon nanotube of arc discharge method preparation 2.5h, then acidification 24-36h is carried out with concentrated acid, then it is then added to the imidazole radicals ionic liquid that 250mL mass concentration is 20% In the aqueous solution of body, ultrasonication 12-24h carries out ultracentrifugation processing under the conditions of 15000-25000rpm/min, takes Clear liquid;
The concentrated acid be concentration be 12mol/L concentrated hydrochloric acid, concentration be 16mol/L concentrated nitric acid, concentration be 12mol/L's The concentrated sulfuric acid that concentrated hydrochloric acid and concentration are 18mol/L arbitrarily than the mixed liquor of composition or concentration be 16mol/L concentrated nitric acid and concentration For 18mol/L the concentrated sulfuric acid arbitrarily than the mixed liquor of composition;
Two, the enrichment of metallic single-wall carbon nano-tube:
It is added in supernatant using the NaOH or KOH solution that concentration is 6mol/L, and under conditions of 60 DEG C of oil bath, Stirring 72 hours is depressurized using sand core funnel and is filtered, and is dried in vacuo for 24 hours under the conditions of 60 DEG C, is obtained metallic single-wall carbon and is received Mitron powder;
Three, the preparation of composite aerogel:
10mg metallic single-wall carbon nano-tube powder is added every time into uniform and stable graphene oxide dispersion to gold The additional amount of attribute single pipe powder is 40-60mg, wherein the matter of metallic single-wall carbon nano-tube and graphene oxide It is molten that the sodium bicarbonate that concentration is 2mol/L is added dropwise than being 1:0.5-3, ultrasound 10-15h under conditions of frequency is 60-80Hz in amount It is 8.6-9.6 that liquid, which adjusts pH value, and 2mg ascorbic acid, ethylenediamine or NaHSO is added4, in 80 DEG C of oil bath heating 20h, obtain graphite Alkene hydrogel, frozen dried 72h obtain metallic single-wall carbon nano-tube-graphene composite aerogel;
Four, the preparation of combination electrode electric material:
Electrode is made in metallic single-wall carbon nano-tube-graphene composite aerogel compressing tablet process, and is immersed in mole dense Degree is 18-30h in the potassium hydroxide electrolyte of 6mol/L to get metallic single-wall carbon nano-tube-graphene aerogel compound electric Pole material.
Specific embodiment 2: the present embodiment is different from the first embodiment in that imidazole radicals described in step 1 from Sub- liquid is 3- normal-butyl -1- methylimidazole borofluoride.It is other same as the specific embodiment one.
Specific embodiment 3: the present embodiment is different from the first and the second embodiment in that by 20- in step 1 40mg handles 1.5h in 360 DEG C of calcinations using the single-walled carbon nanotube of arc discharge method preparation.Other and specific embodiment one Or two is identical.
Specific embodiment 4: unlike one of present embodiment and specific embodiment one to three in step 1 30mg is handled into 2h in 370 DEG C of calcinations using the single-walled carbon nanotube of arc discharge method preparation.Other and specific embodiment one It is identical to one of three.
Specific embodiment 5: unlike one of present embodiment and specific embodiment one to four in step 1 Acidification 30h is carried out with concentrated acid again.It is other identical as one of specific embodiment one to four.
Specific embodiment 6: unlike one of present embodiment and specific embodiment one to five in step 1 Ultrasonication 18h.It is other identical as one of specific embodiment one to five.
Specific embodiment 7: unlike one of present embodiment and specific embodiment one to six in step 1 Ultracentrifugation processing is carried out under the conditions of 20000rpm/min.It is other identical as one of specific embodiment one to six.
Specific embodiment 8: unlike one of present embodiment and specific embodiment one to seven in step 3 The mass ratio of metallic single-wall carbon nano-tube and graphene oxide is 1:2.It is other identical as one of specific embodiment one to seven.
Specific embodiment 9: unlike one of present embodiment and specific embodiment one to eight in step 3 Ultrasound 14h under conditions of frequency is 80Hz.It is other identical as one of specific embodiment one to eight.
Specific embodiment 10: unlike one of present embodiment and specific embodiment one to nine in step 3 It is 9 that the sodium bicarbonate solution that concentration is 2mol/L, which is added dropwise, and adjusts pH value.It is other identical as one of specific embodiment one to nine.
Using following experimental verifications effect of the present invention:
Experiment one:
Metallic single-wall carbon nano-tube-graphene aerogel combination electrode material preparation method according to the following steps into Row:
One, single-walled carbon nanotube is pre-processed:
30mg is handled into 2.5h in 350 DEG C of calcinations using the single-walled carbon nanotube of arc discharge method preparation, then with concentrated acid into Then row acidification 30h is then added in the aqueous solution for the imidazolium ionic liquid that 250mL mass concentration is 20%, ultrasound It is crushed for 24 hours, ultracentrifugation processing is carried out under the conditions of 25000rpm/min, takes supernatant;
The concentrated acid is the concentrated hydrochloric acid that concentration is 12mol/L;
Using UV, visible light near infrared spectrum (SHIMADZU UV-3600), test results are shown in figure 1, is put using electric arc Between 1.2-1.5nm, ultraviolet peak appears between wavelength 600-800nm the diameter of the single-walled carbon nanotube of electrical method preparation.Cause This is successfully enriched with to have obtained metallic single-wall carbon nano-tube using imidazolium ionic liquid by the available conclusion of the figure;
Two, the enrichment of metallic single-wall carbon nano-tube:
It is added in supernatant using the NaOH or KOH solution that concentration is 6mol/L, and under conditions of 60 DEG C of oil bath, Stirring 72 hours is depressurized using sand core funnel and is filtered, and is dried in vacuo for 24 hours under the conditions of 60 DEG C, is obtained metallic single-wall carbon and is received Mitron powder;
Three, the preparation of composite aerogel:
10mg metallic single-wall carbon nano-tube powder is added every time into uniform and stable graphene oxide dispersion to gold The additional amount of attribute single pipe powder is 40mg, wherein the mass ratio of metallic single-wall carbon nano-tube and graphene oxide For 1:1, ultrasound 10h under conditions of frequency is 80Hz, the sodium bicarbonate solution adjusting pH value that concentration is 2mol/L, which is added dropwise, is 9.2,2mg ascorbic acid is added in 80 DEG C of oil bath heating 20h and obtains graphene hydrogel, frozen dried 72h finally obtains gold Attribute single-walled carbon nanotube-graphene composite aerogel;
Four, the preparation of combination electrode electric material:
Electrode is made in the processing of 10MPa lower sheeting in metallic single-wall carbon nano-tube-graphene composite aerogel, to electrode For platinum electrode, reference electrode is mercury and mercury oxide, and is immersed in the potassium hydroxide electrolyte that molar concentration is 6mol/L for 24 hours, Constant current charge-discharge test is carried out,
Using electrochemical workstation (BioLogic SP-300) under 1-10A/g current density to combination electrode material into Row test, if the test result of Fig. 2 is it is found that test result are as follows: as electric current increases, charging and discharging curve dimensionally stable is constant, Similar is isosceles triangle, therefore the combination electrode material capacitive property is good.Specific capacitance is under the current density of 1A/g 170F/g。

Claims (10)

1. metallic single-wall carbon nano-tube-graphene aerogel combination electrode material preparation method, it is characterised in that metallicity Single-walled carbon nanotube-graphene aerogel combination electrode material preparation method follows the steps below:
One, single-walled carbon nanotube is pre-processed:
10-60mg is handled into 1.5-2.5h in 350 DEG C of -380 DEG C of calcinations using the single-walled carbon nanotube of arc discharge method preparation, then Acidification 24-36h is carried out with concentrated acid, is then then added to the water for the imidazolium ionic liquid that 250mL mass concentration is 20% In solution, ultrasonication 12-24h carries out ultracentrifugation processing under the conditions of 15000-25000rpm/min, takes supernatant;
The concentrated acid be concentration be 12mol/L concentrated hydrochloric acid, concentration be 16mol/L concentrated nitric acid, concentration be 12mol/L dense salt The concentrated nitric acid that the concentrated sulfuric acid that acid is 18mol/L with concentration is arbitrarily 16mol/L than the mixed liquor of composition or concentration is with concentration The concentrated sulfuric acid of 18mol/L is arbitrarily than the mixed liquor of composition;
Two, the enrichment of metallic single-wall carbon nano-tube:
It is added in supernatant using the NaOH or KOH solution that concentration is 6mol/L, and under conditions of 60 DEG C of oil bath, stirring It 72 hours, is depressurized and is filtered using sand core funnel, and be dried in vacuo for 24 hours under the conditions of 60 DEG C, obtain metallic single-wall carbon nano-tube Powder;
Three, the preparation of composite aerogel:
10mg metallic single-wall carbon nano-tube powder is added every time into uniform and stable graphene oxide dispersion to metallicity The additional amount of single pipe powder is 40-60mg, wherein the mass ratio of metallic single-wall carbon nano-tube and graphene oxide For 1:0.5-3, the sodium bicarbonate solution tune that concentration is 2mol/L is added dropwise in ultrasound 10-15h under conditions of frequency is 60-80Hz Section pH value is 8.6-9.6, and 2mg ascorbic acid, ethylenediamine or NaHSO is added4, in 80 DEG C of oil bath heating 20h, obtain graphene water Gel, frozen dried 72h obtain metallic single-wall carbon nano-tube-graphene composite aerogel;
Four, the preparation of combination electrode electric material:
Metallic single-wall carbon nano-tube-graphene composite aerogel compressing tablet process is made electrode, and is immersed in molar concentration and is 18-30h is in the potassium hydroxide electrolyte of 6mol/L to get metallic single-wall carbon nano-tube-graphene aerogel combination electrode material Material.
2. metallic single-wall carbon nano-tube-graphene aerogel combination electrode material preparation method according to claim 1, It is characterized in that imidazolium ionic liquid described in step 1 is 3- normal-butyl -1- methylimidazole borofluoride.
3. metallic single-wall carbon nano-tube-graphene aerogel combination electrode material preparation method according to claim 1, It is characterized in that 20-40mg is handled using the single-walled carbon nanotube of arc discharge method preparation in 360 DEG C of calcinations in step 1 1.5h。
4. metallic single-wall carbon nano-tube-graphene aerogel combination electrode material preparation method according to claim 1, It is characterized in that 30mg is handled 2h in 370 DEG C of calcinations using the single-walled carbon nanotube of arc discharge method preparation in step 1.
5. metallic single-wall carbon nano-tube-graphene aerogel combination electrode material preparation method according to claim 1, It is characterized in that carrying out acidification 30h with concentrated acid again in step 1.
6. metallic single-wall carbon nano-tube-graphene aerogel combination electrode material preparation method according to claim 1, It is characterized in that ultrasonication 18h in step 1.
7. metallic single-wall carbon nano-tube-graphene aerogel combination electrode material preparation method according to claim 1, It is characterized in that ultracentrifugation processing is carried out in step 1 under the conditions of 20000rpm/min.
8. metallic single-wall carbon nano-tube-graphene aerogel combination electrode material preparation method according to claim 1, It is characterized in that the mass ratio of metallic single-wall carbon nano-tube and graphene oxide is 1:2 in step 3.
9. metallic single-wall carbon nano-tube-graphene aerogel combination electrode material preparation method according to claim 1, It is characterized in that in step 3 under conditions of frequency is 80Hz ultrasound 14h.
10. metallic single-wall carbon nano-tube-graphene aerogel combination electrode material preparation side according to claim 1 Method, it is characterised in that it is 9 that the sodium bicarbonate solution that concentration is 2mol/L is added dropwise in step 3 and adjusts pH value.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021142579A1 (en) * 2020-01-13 2021-07-22 江苏大学 Energy harvesting and self-cleaning system based on graphene aerogel and preparation method therefor

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KR20130045997A (en) * 2011-10-27 2013-05-07 한국과학기술원 A method for manufacturing metal carbon nanotube-containing graphene composite film and carbon nanotube-containing graphene composite film manufactured by the same
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CN105084342A (en) * 2015-08-13 2015-11-25 海门市明阳实业有限公司 Preparing method for carbon nano tube thin film
CN108336336A (en) * 2018-02-08 2018-07-27 涵谷新能源科技(上海)有限公司 A kind of tri compound aeroge and preparation method thereof and electrode slice preparation process

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Publication number Priority date Publication date Assignee Title
CN101125649A (en) * 2007-09-22 2008-02-20 兰州大学 Method for separating metallic single-wall carbon nano-tube
CN101186763A (en) * 2007-11-08 2008-05-28 上海交通大学 Method for preparing fluorescence ion liquid functionalization carbon nano-tube
KR20130045997A (en) * 2011-10-27 2013-05-07 한국과학기술원 A method for manufacturing metal carbon nanotube-containing graphene composite film and carbon nanotube-containing graphene composite film manufactured by the same
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* Cited by examiner, † Cited by third party
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