CN104269556B - A kind of lithium rechargeable battery CNT and Graphene compound electrocondution slurry - Google Patents
A kind of lithium rechargeable battery CNT and Graphene compound electrocondution slurry Download PDFInfo
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- CN104269556B CN104269556B CN201410466761.6A CN201410466761A CN104269556B CN 104269556 B CN104269556 B CN 104269556B CN 201410466761 A CN201410466761 A CN 201410466761A CN 104269556 B CN104269556 B CN 104269556B
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- 239000002002 slurry Substances 0.000 title claims abstract description 35
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 33
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 15
- -1 Graphene compound Chemical class 0.000 title claims description 10
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims description 13
- 239000002048 multi walled nanotube Substances 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 claims 1
- 150000003233 pyrroles Chemical class 0.000 claims 1
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 claims 1
- 229920002554 vinyl polymer Polymers 0.000 claims 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical class [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 26
- 150000001875 compounds Chemical class 0.000 abstract description 7
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 4
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 4
- 239000006185 dispersion Substances 0.000 abstract description 3
- 239000003381 stabilizer Substances 0.000 abstract description 3
- 239000002270 dispersing agent Substances 0.000 description 5
- 239000002033 PVDF binder Substances 0.000 description 4
- 229910021392 nanocarbon Inorganic materials 0.000 description 4
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 description 3
- 239000002041 carbon nanotube Substances 0.000 description 3
- 229910021393 carbon nanotube Inorganic materials 0.000 description 3
- 238000013329 compounding Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 description 3
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 3
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 3
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 239000006258 conductive agent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004626 scanning electron microscopy Methods 0.000 description 1
- 238000007613 slurry method Methods 0.000 description 1
- 239000002904 solvent Substances 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
- H01M4/362—Composites
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
-
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Composite Materials (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses and belong to a kind of lithium rechargeable battery CNT of battery material preparing technical field and Graphene compounds electrocondution slurry.This slurry is made up of the component of following mass fraction: the CNT of 2% 4.5%, the Graphene of 0.5% 1.5%, and the dispersion stabilizer of 0.1% 1.5%, surplus is N methyl pyrrolidone.It is low that the present invention uses CNT and Graphene to compound electrocondution slurry not only viscosity, meet lithium rechargeable battery factory auto feed technological requirement, and due to the addition of Graphene, make to define between positive electrode, CNT, Graphene the conductive network structure of point-line-surface, improve the performance of lithium ion battery.
Description
Technical field
The invention belongs to battery material preparing technical field, be specifically related to a kind of lithium rechargeable battery carbon
Nanotube and Graphene compound electrocondution slurry.
Background technology
The carbon nano tube paste of lithium rechargeable battery, owing to CNT specific surface is very big, viscosity is higher,
Inapplicable lithium rechargeable battery factory auto feed technique.And CNT and traditional conductive agent white carbon black,
One or more conductive agents of acetylene black, electrically conductive graphite compound, although also can get low viscosity slurry, but lithium from
Sub-battery performance has declined.
The compounding composite technology of Graphene and CNT has had and has developed on a large scale very much, such as patent CN10
3794379 disclose a kind of Graphene/carbon nanotube composite material and preparation method thereof, and prepared by the method answers
Condensation material can make super capacitor, but, there is presently no one and can meet CNT and Graphene
Compounding electrocondution slurry, it is achieved lithium rechargeable battery factory auto feed technological requirement.
Summary of the invention
It is an object of the invention to provide a kind of lithium rechargeable battery CNT and the compounding conduction of Graphene
Slurry and preparation method thereof.
A kind of lithium rechargeable battery CNT and Graphene compound electrocondution slurry, and this slurry is by following matter
The component composition of amount mark: the CNT of 2%-4.5%, the Graphene of 0.5%-1.5%, 0.1%-1.5%'s
Dispersion stabilizer, surplus is N-Methyl pyrrolidone.
Described dispersion stabilizer is one or both in polyvinyl pyrrolidone or polyvinyl alcohol.
Described slurry viscosity is≤8000mPa.s.
BET >=the 50m of described Graphene2。
A kind of lithium rechargeable battery CNT and Graphene compound the preparation method of electrocondution slurry, according to
Following steps are carried out:
(1) first dispersant is dissolved in solvent N-methyl pyrilidone；
(2) premix, strong stirring, add Graphene and CNT by said ratio simultaneously；
(3) 2000-5000RPM, husky mill 1-5h, make.
Beneficial effects of the present invention: the present invention uses CNT and Graphene to compound electrocondution slurry not only viscosity
Low, meet lithium rechargeable battery factory auto feed technological requirement, and due to the addition of Graphene, just make
The conductive network structure of point-line-surface is defined, the property of lithium ion battery between pole material, CNT, Graphene
Can improve on the contrary.Graphene cost is lower than CNT, greatly reduces the application cost of CNT.
The electrocondution slurry preparation method of the present invention is simple, is suitable for large-scale industrial production.
Accompanying drawing explanation
Fig. 1 is the SEM (scanning electron microscope) that embodiment 1 CNT and Graphene compound electrocondution slurry
Figure.
Fig. 2 is the lithium ion battery high rate performance using the electrocondution slurry of embodiment 1 to prepare.
Fig. 3 compounds the SEM (scanning electron microscopy of electrocondution slurry for embodiment 2 CNT and Graphene
Mirror) figure.
Fig. 4 is the lithium ion battery high rate performance using the electrocondution slurry of embodiment 2 to prepare.
Detailed description of the invention
The present invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
Weigh 470 grams of N-Methyl pyrrolidone, add 5 grams of polyvinyl pyrrolidone, stirring and dissolving；By force
Power stirs, and is simultaneously introduced 20 grams of multi-walled carbon nano-tubes, 5 grams of Graphenes, and its specific surface area is about 150m2/g；
3000RPM, husky mill 3h obtain slurry A1；Fig. 1 is its SEM figure.
Use Brookfield viscometer testing size viscosity, contrast with pure nano-carbon tube slurry A3 simultaneously.
Shown in table 1.The slurry obtained compounds with LFP-P2, and in compound, the mass percent of each composition is: LFP:
Multi-walled carbon nano-tubes: Graphene: dispersant: PVDF=94.6%: 1.6%: 0.4%: 0.4%: 3%, make button electricity,
Test battery performance.Contrast with pure nano-carbon tube slurry: CNT: LFP: CNT: dispersant: PVDF=94.6% simultaneously:
2%: 0.4%: 3%.Button cell different multiplying battery performance is as shown in Figure 2
Embodiment 2
Weigh 470 grams of N-Methyl pyrrolidone, add 5 grams of polyvinyl pyrrolidone, stirring and dissolving；By force
Power stirs, and is simultaneously introduced 20 grams of multi-walled carbon nano-tubes, 5 grams of Graphenes, and its specific surface area is about 50m2/g；
3000RPM, husky mill 3h obtain slurry A2；Fig. 3 is its SEM figure.
Use Brookfield viscometer testing size viscosity, simultaneously with pure nano-carbon tube slurry to such as table 1
Shown in.
Table 1. slurry viscosity
| Slurry | CNT:Graphene | Graphene BET m2/g | Viscosity mPa.s |
| A1 | 4∶1 | 150 | 19000 |
| A2 | 4∶1 | 50 | 8000 |
| A3 | 5∶0 | 78000 |
The slurry obtained compounds with LFP-P2, and in compound, the mass percent of each composition is: LFP: many walls carbon is received
Mitron: Graphene: dispersant: PVDF=94.6%: 1.6%: 0.4%: 0.4%: 3%, makes button electricity, test electricity
Pond performance.Contrast with pure nano-carbon tube slurry: CNT: LFP: CNT: dispersant: PVDF=94.6% simultaneously:
2%: 0.4%: 3%.Button cell different multiplying battery performance is as shown in Figure 4.
Embodiment 3
Weigh 470 grams of N-Methyl pyrrolidone, add 5 grams of polyvinyl alcohol, stirring and dissolving；Strong stirring, simultaneously
Adding 20 grams of multi-walled carbon nano-tubes, 5 grams of Graphenes, its specific surface area is about 100m2/g；3000RPM, husky mill 3h
Obtain slurry.
Embodiment 4
Weigh 450 grams of N-Methyl pyrrolidone, add 5 grams of polyvinyl alcohol, stirring and dissolving；Strong stirring, simultaneously
Adding 21 grams of multi-walled carbon nano-tubes, 6 grams of Graphenes, its specific surface area is about 120m2/g；4000RPM, husky mill 4h
Obtain slurry.
Claims (2)
1. a lithium rechargeable battery CNT and Graphene compound electrocondution slurry, it is characterised in that
This slurry is adopted and is prepared with the following method: weigh 470 grams of N-Methyl pyrrolidone, adds 5 grams of polyvinyl pyrroles
Pyrrolidone, stirring and dissolving；Strong stirring, is simultaneously introduced 20 grams of multi-walled carbon nano-tubes, 5 grams of Graphenes, its
Specific surface area is 150m2/g；Under the conditions of rotating speed is 3000rpm, husky mill 3h obtains electrocondution slurry.
A kind of lithium rechargeable battery CNT the most according to claim 1 and Graphene compound and lead
The preparation method of plasma-based material, it is characterised in that weigh 470 grams of N-Methyl pyrrolidone, adds 5 grams of poly-second
Vinyl pyrrolidone, stirring and dissolving；Strong stirring, is simultaneously introduced 20 grams of multi-walled carbon nano-tubes, 5 grams of graphite
Alkene, its specific surface area is 150m2/g；Under the conditions of rotating speed is 3000rpm, husky mill 3h obtains electrocondution slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410466761.6A CN104269556B (en) | 2014-09-15 | 2014-09-15 | A kind of lithium rechargeable battery CNT and Graphene compound electrocondution slurry |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410466761.6A CN104269556B (en) | 2014-09-15 | 2014-09-15 | A kind of lithium rechargeable battery CNT and Graphene compound electrocondution slurry |
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| Publication Number | Publication Date |
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| CN104269556A CN104269556A (en) | 2015-01-07 |
| CN104269556B true CN104269556B (en) | 2016-11-09 |
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Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104766645B (en) * | 2015-03-24 | 2017-02-01 | 潍坊昊晟碳材料有限公司 | Carbon nanotube-graphene composite electric conduction slurry and preparation method and application thereof |
| CN104795570B (en) * | 2015-04-16 | 2017-03-01 | 珠海市三顺中科新材料有限公司 | A kind of composite conducting slurry for lithium ion battery plus-negative plate and preparation method thereof |
| CN104900883A (en) * | 2015-06-19 | 2015-09-09 | 中国第一汽车股份有限公司 | Preparation method of electroconductive agent for electrode |
| CN105552357B (en) * | 2016-01-29 | 2018-10-02 | 银隆新能源股份有限公司 | Lithium titanate electrode material and preparation method thereof |
| CN105702925A (en) * | 2016-01-29 | 2016-06-22 | 珠海银隆新能源有限公司 | Lithium titanate electrode material and preparation method therefor |
| CN105529449A (en) * | 2016-01-29 | 2016-04-27 | 珠海银隆新能源有限公司 | Lithium titanate electrode material and preparation method thereof |
| CN107317033A (en) * | 2016-04-27 | 2017-11-03 | 深圳格林德能源有限公司 | A kind of graphene/carbon nano-tube composite conducting slurry and preparation method thereof |
| CN107464934A (en) * | 2016-06-06 | 2017-12-12 | 深圳格林德能源有限公司 | One kind is based on graphene/carbon nano-tube combined conductive agent anode sizing agent preparation method |
| CN106654204A (en) * | 2016-12-15 | 2017-05-10 | 中国航空工业集团公司北京航空材料研究院 | Preparation method for graphene conductive slurry |
| CN106935312B (en) * | 2017-03-29 | 2018-09-28 | 浙江师范大学 | A kind of aqueous mixed type electrocondution slurry and preparation method thereof |
| TWI680943B (en) * | 2017-06-23 | 2020-01-01 | 識驊科技股份有限公司 | Method for forming uniform nano carbon tube conductive paste and applied process device |
| CN107706422A (en) * | 2017-07-14 | 2018-02-16 | 常州第六元素材料科技股份有限公司 | Composite mortar of graphene and CNT and preparation method thereof, anode sizing agent and its method |
| CN107611440A (en) * | 2017-08-14 | 2018-01-19 | 中国石油大学(北京) | A kind of bowl-type carbon material, it is prepared and point-line-surface three-phase composite electrocondution slurry |
| CN107895601A (en) * | 2017-09-30 | 2018-04-10 | 珠海聚碳复合材料有限公司 | Lithium rechargeable battery graphene conductive slurry and preparation method thereof |
| CN110518248A (en) * | 2019-09-02 | 2019-11-29 | 昂星新型碳材料常州有限公司 | A kind of lithium battery electrocondution slurry and preparation method thereof |
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| CN102544502A (en) * | 2010-12-09 | 2012-07-04 | 中国科学院宁波材料技术与工程研究所 | Anode and cathode conductive additive for secondary lithium battery, method for preparing conductive additive, and method for preparing secondary lithium battery |
| CN103956498A (en) * | 2014-04-18 | 2014-07-30 | 西南石油大学 | Preparation method of carbon nanotube/graphene composite material |
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| JP6046461B2 (en) * | 2012-11-21 | 2016-12-14 | 東邦テナックス株式会社 | Porous conductive sheet and method for producing the same, electrode material, fuel cell |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102544502A (en) * | 2010-12-09 | 2012-07-04 | 中国科学院宁波材料技术与工程研究所 | Anode and cathode conductive additive for secondary lithium battery, method for preparing conductive additive, and method for preparing secondary lithium battery |
| CN103956498A (en) * | 2014-04-18 | 2014-07-30 | 西南石油大学 | Preparation method of carbon nanotube/graphene composite material |
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