CN109378446A - The preparation method of lithium ion battery anode slurry - Google Patents
The preparation method of lithium ion battery anode slurry Download PDFInfo
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- CN109378446A CN109378446A CN201811340189.3A CN201811340189A CN109378446A CN 109378446 A CN109378446 A CN 109378446A CN 201811340189 A CN201811340189 A CN 201811340189A CN 109378446 A CN109378446 A CN 109378446A
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- Prior art keywords
- ion battery
- lithium ion
- battery anode
- preparation
- revolving speed
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 34
- 239000006256 anode slurry Substances 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 238000003756 stirring Methods 0.000 claims abstract description 34
- 239000000203 mixture Substances 0.000 claims abstract description 32
- 238000002156 mixing Methods 0.000 claims abstract description 27
- 239000002904 solvent Substances 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000011267 electrode slurry Substances 0.000 claims abstract description 15
- 239000006258 conductive agent Substances 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000007767 bonding agent Substances 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 230000008569 process Effects 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000008367 deionised water Substances 0.000 claims description 8
- 229910021641 deionized water Inorganic materials 0.000 claims description 8
- 239000010439 graphite Substances 0.000 claims description 8
- 229910002804 graphite Inorganic materials 0.000 claims description 8
- 238000010189 synthetic method Methods 0.000 claims description 7
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 3
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 3
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 3
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 3
- 239000002002 slurry Substances 0.000 abstract description 23
- 239000006185 dispersion Substances 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 4
- 239000011149 active material Substances 0.000 abstract description 3
- 238000007580 dry-mixing Methods 0.000 abstract description 3
- 239000002245 particle Substances 0.000 abstract description 3
- 239000000843 powder Substances 0.000 abstract description 3
- 238000010008 shearing Methods 0.000 abstract description 3
- 239000007787 solid Substances 0.000 description 8
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 5
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 5
- 239000003643 water by type Substances 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 150000002500 ions Chemical group 0.000 description 3
- 239000011344 liquid material Substances 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000011345 viscous material 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
- H01M4/622—Binders being polymers
-
- 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
- H01M4/04—Processes of manufacture in general
-
- 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
Landscapes
- 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)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a kind of preparation methods of lithium ion battery anode slurry, include the following steps: step 1: the dry material of plurality of raw materials being carried out siccative stirring, to obtain siccative mixture；Step 2: adding solvent into the siccative mixture, and be again stirring for, to obtain wet feed mixture；Step 3: adding bonding agent into the wet feed mixture, and be again stirring for, to obtain the negative electrode slurry.The preparation method of lithium ion battery anode slurry provided by the invention, using dry mixing technique, on the one hand, the bigger shearing force that rabbling mechanism rotation generates can make the sufficiently broken dispersion of conductive agent aggregate, on the other hand, under high speed dispersion effect, dry powder stirring can be realized the mixing on microcosmic, it deposits to form one layer tiny of scattered conductive agent sedimentary in biggish active material particle surface, to form good conductive network.The present invention can shorten the time of stirring technique, and the stability of slurry and dispersing uniformity can be made more preferable.
Description
Technical field
The present invention relates to technical field of lithium ion, especially a kind of preparation method of lithium ion battery anode slurry.
Background technique
Countries in the world are the energy crisis and environmental pollution that become increasingly conspicuous of reply, Devoting Major Efforts To Developing new energy with it is energy saving and environment friendly
Automobile, lithium secondary ion battery is big with its specific energy, operating voltage is high, specific power is big, have extended cycle life, operating temperature range is wide
Comprehensive advantage for hybrid vehicle and electric car development and exploitation provide strong impetus, quickly grow in recent years.
Meanwhile the fast development of laptop, portable digital product and ng mobile communication, also require lithium secondary ion
Battery has lighter weight, higher energy and power density and longer cycle life.
The raising of performance of lithium ion battery and the improvement of technology, negative electrode material are one of key technologies.Negative electrode slurry is by gluing
The composition such as mixture, graphite carbon dust.The preparation of negative electrode slurry includes mutual mixed between liquid and liquid, liquid and solid material
The series of process processes such as conjunction, dissolution, dispersion, and all change in this process along with temperature, viscosity, environment etc..?
In negative electrode slurry, the dispersibility and uniformity of particulate active directly ring the movement to lithium ion in two interpolar of battery, because
The mixing of the slurry of this each pole piece material in lithium ion battery production disperses most important, the quality of slurry dispersion quality, directly
Connect the performance of quality for influencing subsequent lithium ion battery production and products thereof.
It stirs after all first mixing dry material with liquid material in the preparation process of existing negative electrode slurry, will affect in this way
The mixed uniformity of material.
It is, thus, sought for a kind of reasonable method improves negative electrode slurry dispersion effect, to meet the high ratio of lithium ion battery
The requirement of capacity.
Summary of the invention
In view of this, an object of the present invention is to provide a kind of stability that can make slurry and dispersed better lithium
The preparation method of ion battery negative electrode slurry.
The present invention provides a kind of preparation method of lithium ion battery anode slurry, includes the following steps:
Step 1: the dry material of plurality of raw materials is subjected to siccative stirring, to obtain siccative mixture；
Step 2: adding solvent into the siccative mixture, and be again stirring for, to obtain wet feed mixture；
Step 3: adding bonding agent into the wet feed mixture, and be again stirring for, to obtain the negative electrode slurry.
Preferably, the plurality of raw materials includes graphite, conductive agent and sodium carboxymethylcellulose.
Preferably, the solvent includes deionized water.
Preferably, the bonding agent includes butadiene-styrene rubber.
Preferably, Step 1: being stirred in step 2 and/or step 3 using rabbling mechanism；
Preferably, the rabbling mechanism is double-planet power mixer.
Preferably, in the whipping process of the step 1, the revolution revolving speed of the double-planet power mixer is 10-
20r/min, rotation revolving speed are 250-350r/min, mixing time 5-15min；And/or
In the whipping process of step 2, the revolution revolving speed of the double-planet power mixer is 15-25r/min, rotation
Revolving speed 250-350r/min, mixing time 5-15min；And/or
In the whipping process of step 3, the revolution revolving speed of the double-planet power mixer is 15-25r/min, rotation
Revolving speed is 450-550r/min, mixing time 5-15min.
Preferably, in the step 2, it adds the solvent and vacuum is opened to the rabbling mechanism later, then open again
Begin to stir.
Preferably, the vacuum degree after the rabbling mechanism unlatching vacuum is less than or equal to -85Kpa.
Preferably, it adds the solvent several times in the step 2, is stirred after adding the solvent every time.
Preferably, the addition number of the solvent is 5-8 times.
The preparation method of lithium ion battery anode slurry provided by the invention, using dry mixing technique, on the one hand, stirring
The bigger shearing force that mechanism rotation generates can make the sufficiently broken dispersion of conductive agent aggregate, on the other hand, high speed dispersion
Under effect, dry powder stirring can be realized the mixing on microcosmic, deposit to form one layer tiny in biggish active material particle surface
Scattered conductive agent sedimentary, to form good conductive network.The present invention can shorten the time of stirring technique, and energy
Enough make stability and the dispersing uniformity of slurry more preferable.
Specific embodiment
Below based on embodiment, present invention is described, but the present invention is not restricted to these embodiments.
Unless the context clearly requires otherwise, "include", "comprise" otherwise throughout the specification and claims etc. are similar
Word should be construed as the meaning for including rather than exclusive or exhaustive meaning；That is, be " including but not limited to " contains
Justice.
In the description of the present invention, it is to be understood that, term " first ", " second " etc. are used for description purposes only, without
It can be interpreted as indication or suggestion relative importance.In addition, in the description of the present invention, unless otherwise indicated, the meaning of " multiple "
It is two or more.
The present invention provides a kind of preparation method of lithium ion battery anode slurry, comprising:
A variety of dry materials are put into progress siccative stirring in rabbling mechanism, material is uniformly mixed and forms siccative mixture,
Preferably, the material includes at least graphite, conductive agent, CMC (sodium carboxymethylcellulose), it is preferable that the conductive agent is preferred
For carbon black.The rabbling mechanism is preferably double-planet power mixer, it is preferable that carries out double-planet power when siccative stirring
The revolution revolving speed of blender is 10-20r/min, and rotation revolving speed is 250-350r/min, mixing time 5-15min.
Then solvent is added into rabbling mechanism several times, and is stirred after addition solvent every time, the solvent
Preferably deionized water, addition number is preferably 5-8 times.Preferably, it is required to open vacuum after addition solvent every time, open true
It is stirred again after sky, forms wet feed mixture.Further, double-planet power mixer when being stirred after addition solvent
Revolution revolving speed is 15-25r/min, rotation revolving speed 250-350r/min, mixing time 5-15min, described double after opening vacuum
Vacuum degree in planetary power blender is after opening vacuum, to mix material under vacuum conditions less than or equal to -85Kpa,
Keep the mixed viscosity of material higher.
After completing repeatedly addition solvent, bonding agent, the bonding agent are added into the double-planet power mixer
Preferably SBR (butadiene-styrene rubber).After SBR addition, continue to stir, it is preferable that the public affairs of the double-planet power mixer
Speed of walking around is 15-25r/min, and rotation revolving speed is 450-550r/min, mixing time 5-15min.
Lithium ion battery anode slurry is obtained after the completion of stirring.Then the slurry of acquisition is checked, detect its viscosity,
Whether fineness and solid content etc. are qualified.
Preferably, during aforesaid operations, by the agitating paddle and dispersion impeller of the blender after stirring is completed every time
The upper viscous material paid is cleared up, and is scraped to the blender, can be sufficiently stirred with guaranteeing all materials.
Specific embodiment is as follows:
Embodiment one, specific synthetic method include the following steps:
Step 1: weighing graphite, conductive agent and CMC first and be put into double-planet power mixer, the double-planet power
Blender is stirred with the revolving speed 10r/min that revolves, the revolving speed of rotation revolving speed 250r/min, mixing time 10min, is formed dry
Expect mixture.
Step 2: successively dividing 5 addition deionized waters in the siccative mixture into the double-planet power mixer, and
The double-planet power mixer is opened into vacuum after deionized water adding every time, vacuum degree be less than or equal to-
85Kpa, then make the double-planet power mixer with the revolving speed 15r/min that revolves, the revolving speed of rotation revolving speed 150r/min is stirred
It mixes, mixing time 10min, forms wet feed mixture.The slurry on agitating paddle and on dispersion impeller is scraped to tank after the completion of stirring
It is interior.
Step 3: being added SBR in the wet feed mixture into the double-planet power mixer, then keeps the double-planet dynamic
Power blender is stirred with the revolving speed of the revolving speed 15r/min that revolves, rotation revolving speed 450r/min, mixing time 10min, forms lithium
Ion battery negative electrode slurry.The slurry on agitating paddle and on dispersion impeller is scraped to tank after the completion of stirring.
Finally obtain finely dispersed lithium ion battery anode slurry, measure slurry solid content be 48%, viscosity 1600.
Embodiment two, specific synthetic method include the following steps:
Step 1: weighing graphite, conductive agent and CMC first and be put into double-planet power mixer, the double-planet power
Blender is stirred with the revolving speed 12r/min that revolves, the revolving speed of rotation revolving speed 280r/min, mixing time 8min, is formed dry
Expect mixture.
Step 2: successively dividing 6 addition deionized waters in the siccative mixture into the double-planet power mixer, and
The double-planet power mixer is opened into vacuum after deionized water adding every time, vacuum degree be less than or equal to-
85Kpa, then make the double-planet power mixer with the revolving speed 18r/min that revolves, the revolving speed of rotation revolving speed 150r/min is stirred
It mixes, mixing time 15min, forms wet feed mixture.The slurry on agitating paddle and on dispersion impeller is scraped to tank after the completion of stirring
It is interior.
Step 3: being added SBR in the wet feed mixture into the double-planet power mixer, then keeps the double-planet dynamic
Power blender is stirred with the revolving speed of the revolving speed 20r/min that revolves, rotation revolving speed 550r/min, mixing time 15min, forms lithium
Ion battery negative electrode slurry.The slurry on agitating paddle and on dispersion impeller is scraped to tank after the completion of stirring.
Finally obtain finely dispersed lithium ion battery anode slurry, measure slurry solid content be 51%, viscosity 2200.
Embodiment three, specific synthetic method include the following steps:
Step 1: weighing graphite, conductive agent and CMC first and be put into double-planet power mixer, the double-planet power
Blender is stirred with the revolving speed 15r/min that revolves, the revolving speed of rotation revolving speed 300r/min, mixing time 12min, is formed dry
Expect mixture.
Step 2: successively dividing 7 addition deionized waters in the siccative mixture into the double-planet power mixer, and
The double-planet power mixer is opened into vacuum after deionized water adding every time, vacuum degree be less than or equal to-
85Kpa, then make the double-planet power mixer with the revolving speed 20r/min that revolves, the revolving speed of rotation revolving speed 200r/min is stirred
It mixes, mixing time 10min, forms wet feed mixture.The slurry on agitating paddle and on dispersion impeller is scraped to tank after the completion of stirring
It is interior.
Step 3: being added SBR in the wet feed mixture into the double-planet power mixer, then keeps the double-planet dynamic
Power blender is stirred with the revolving speed of the revolving speed 25r/min that revolves, rotation revolving speed 450r/min, mixing time 15min, forms lithium
Ion battery negative electrode slurry.The slurry on agitating paddle and on dispersion impeller is scraped to tank after the completion of stirring.
Finally obtain finely dispersed lithium ion battery anode slurry, measure slurry solid content be 55%, viscosity 2800.
Example IV, specific synthetic method include the following steps:
Step 1: weighing graphite, conductive agent and CMC first and be put into double-planet power mixer, the double-planet power
Blender is stirred with the revolving speed 20r/min that revolves, the revolving speed of rotation revolving speed 350r/min, mixing time 15min, is formed dry
Expect mixture.
Step 2: successively dividing 8 addition deionized waters in the siccative mixture into the double-planet power mixer, and
The double-planet power mixer is opened into vacuum after deionized water adding every time, vacuum degree be less than or equal to-
85Kpa, then make the double-planet power mixer with the revolving speed 25r/min that revolves, the revolving speed of rotation revolving speed 250r/min is stirred
It mixes, mixing time 12min, forms wet feed mixture.The slurry on agitating paddle and on dispersion impeller is scraped to tank after the completion of stirring
It is interior.
Step 3: being added SBR in the wet feed mixture into the double-planet power mixer, then keeps the double-planet dynamic
Power blender is stirred with the revolving speed of the revolving speed 20r/min that revolves, rotation revolving speed 500r/min, mixing time 12min, forms lithium
Ion battery negative electrode slurry.The slurry on agitating paddle and on dispersion impeller is scraped to tank after the completion of stirring.
Finally obtain finely dispersed lithium ion battery anode slurry, measure slurry solid content be 57%, viscosity 3600.
The revolving speed of blender in different step is controlled it can be seen from above-mentioned specific embodiment and is added in step 2
The number of solvent can obtain the slurry of different solid contents and viscosity.
The synthetic method of lithium ion battery anode slurry provided by the invention, using dry mixing technique, on the one hand, stirring
The bigger shearing force that mechanism rotation generates can make the sufficiently broken dispersion of conductive agent aggregate, on the other hand, high speed dispersion
Under effect, dry powder stirring can be realized the mixing on microcosmic, deposit to form one layer by tiny in biggish active material particle surface
Scattered conductive agent sedimentary, to form good conductive network.The present invention can shorten the time of stirring technique, and
Stability and the dispersing uniformity of slurry can be made more preferable.
Deionized water of the present invention is to be added in slurry to stir several times, not only ensure that the final viscosity of slurry in this way, but also
The mixing uniformity for improving slurry finally improves the quality of negative electrode slurry.
Negative electrode slurry solid content obtained by synthetic method is about 45~60% through the invention, viscosity 1500-3700,
Compared to conventional fabrication process, the ratio for the water for having the characteristics that high solids content, low viscosity, therefore using also accordingly is reduced, and is reduced
To energy consumption needed for moisture evaporation in subsequent coating processes.
Those skilled in the art will readily recognize that above-mentioned each preferred embodiment can be free under the premise of not conflicting
Ground combination, superposition.
It should be appreciated that above-mentioned embodiment is merely exemplary, and not restrictive, without departing from of the invention basic
In the case where principle, those skilled in the art can be directed to the various apparent or equivalent modification or replace that above-mentioned details is made
It changes, is all included in scope of the presently claimed invention.
Claims (10)
1. a kind of preparation method of lithium ion battery anode slurry, which comprises the steps of:
Step 1: the dry material of plurality of raw materials is subjected to siccative stirring, to obtain siccative mixture；
Step 2: adding solvent into the siccative mixture, and be again stirring for, to obtain wet feed mixture；
Step 3: adding bonding agent into the wet feed mixture, and be again stirring for, to obtain the negative electrode slurry.
2. the preparation method of lithium ion battery anode slurry according to claim 1, which is characterized in that the plurality of raw materials
Including graphite, conductive agent and sodium carboxymethylcellulose.
3. the preparation method of lithium ion battery anode slurry according to claim 1, which is characterized in that the solvent includes
Deionized water.
4. the preparation method of lithium ion battery anode slurry according to claim 1, which is characterized in that the bonding agent packet
Include butadiene-styrene rubber.
5. the synthetic method of lithium ion battery anode slurry according to claim 1, which is characterized in that Step 1: step
Rapid two and/or step 3 in, be stirred using rabbling mechanism；
Preferably, the rabbling mechanism is double-planet power mixer.
6. the preparation method of lithium ion battery anode slurry according to claim 5, which is characterized in that in the step 1
Whipping process in, the revolution revolving speed of the double-planet power mixer is 10-20r/min, and rotation revolving speed is 250-350r/
Min, mixing time 5-15min；And/or
In the whipping process of step 2, the revolution revolving speed of the double-planet power mixer is 15-25r/min, rotation revolving speed
250-350r/min, mixing time 5-15min；And/or
In the whipping process of step 3, the revolution revolving speed of the double-planet power mixer is 15-25r/min, rotation revolving speed
For 450-550r/min, mixing time 5-15min.
7. the preparation method of lithium ion battery anode slurry according to claim 5, which is characterized in that in the step 2
In, it adds the solvent and vacuum is opened to the rabbling mechanism later, then start to stir again.
8. the preparation method of lithium ion battery anode slurry according to claim 7, which is characterized in that the rabbling mechanism
Vacuum degree after opening vacuum is less than or equal to -85Kpa.
9. the preparation method of lithium ion battery anode slurry according to claim 1, which is characterized in that in the step 2
In add the solvent several times, be stirred after adding the solvent every time.
10. the preparation method of lithium ion battery anode slurry according to claim 9, which is characterized in that the solvent
Adding number is 5-8 times.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110289393A (en) * | 2019-07-26 | 2019-09-27 | 昆山聚创新能源科技有限公司 | Lithium battery cathode pole piece and preparation method thereof |
| CN110429278A (en) * | 2019-07-10 | 2019-11-08 | 中盐安徽红四方锂电有限公司 | A kind of negative electrode slurry and preparation method thereof for low temp lithium ion battery |
| CN113745446A (en) * | 2020-05-27 | 2021-12-03 | 北京小米移动软件有限公司 | Electrode paste preparation process, electrode paste and lithium battery |
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| CN110289393A (en) * | 2019-07-26 | 2019-09-27 | 昆山聚创新能源科技有限公司 | Lithium battery cathode pole piece and preparation method thereof |
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