CN110323407A - A kind of lithium ion cell nano material one pulping process - Google Patents
A kind of lithium ion cell nano material one pulping process Download PDFInfo
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- CN110323407A CN110323407A CN201810266933.3A CN201810266933A CN110323407A CN 110323407 A CN110323407 A CN 110323407A CN 201810266933 A CN201810266933 A CN 201810266933A CN 110323407 A CN110323407 A CN 110323407A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- 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
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- 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
- H01M10/058—Construction or manufacture
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- 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
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- 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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
A kind of lithium ion cell nano material one pulping process is manufactured for lithium ion battery.Including positive and negative electrode active material, conductive agent, bonding agent, thickener, solvent are passed through auto feed, high speed dispersion, cooling deaeration and except iron filtering prepares pulp of lithium ion battery.The present invention has suffered journey all closed automated productions, process no shutdown, no material transfer, without cleaning tank body, no fugitive dust；Mixing is carried out by shearing, dispersion, kneading mode, greatly improves the long problem of traditional handicraft mixing time, good dispersion, uniform and smooth, viscosity, partial size, solid content, mobility are stablized；Slurry jitter time is short, and the lithium ion battery distributing process time is controlled at 1 hour or so, process flow is simplified, substantially increases production efficiency, is suitable for extensive lithium ion battery distributing stirring operation, greatly reduces energy consumption and cost of labor.
Description
Technical field
The present invention relates to technical field of lithium ion, specifically a kind of lithium ion cell nano material one slurrying side
Method.
Background technique
Currently, the device that new-energy automobile provides electric power storage is mainly lithium ion battery, it is fast with new-energy automobile
Speed development, the energy density and consistency of performance requirement to battery are higher and higher, and nanoscale positive and negative electrode material is got over applied to battery
Carry out wider model, traditional homogeneous stirring technique can not solve carbon nanotubes, carbon nano-fiber, superconducting carbon black, gas phase nano silicon and
The dispersion of graphene etc..
Anode and negative electrode slurry Recipe are active material, conductive agent, bonding agent, thickener and solvent by certain ratio
Example mixing.Traditional dry mixing process is after all dry powder puddlings are first added, to add liquid and be stirred, and wet blending process is first to be added
Bonding agent and stirring solvent are fabricated to glue, add conductive agent stirring and are fabricated to conducting resinl, finally add active matter material
Material mixing, the dry, wet blending process are both needed to repeatedly shut down charging, easily powder body material are caused to fly upward, it is often more important that with liquid
When body mixes, the agglomerating powder in part soaks not enough, easily reunites, and is difficult in a short time to disperse the powder of reunion, Zhi Nengtong
Long agitation is crossed to reduce agglomeration, jitter time is long, and energy consumption is high, the slurry that can not be prepared uniformity, not reunite.
Application No. is a kind of 201710188316.1 " high viscosity lithium ion battery slurry-stirring process " patents of invention, disclose
Following technical scheme: being incorporated into bonding agent, conductive agent, thickener, active material in a mixing bowl bucket, is added after dry-mixing molten
Agent, wetting are dispersed after mediating, and finally obtain slurry using strainer filtering.But there are also some problems in slurry preparation process
It does not solve, such as the fugitive dust problem of nano material, invalid stirring caused by dispersing after the first reunion in slurry pre-compounding process is asked
Topic, and cause the problem of slurry viscosity is very high, and double planetary mixer disperses not open since powder body material high-volume is added, also
The problems such as energy consumption is high, mixing time is long needs four to six hours that could disperse to complete to generate slurry.
Summary of the invention
In order to overcome the deficiencies of the prior art, goal of the invention of the invention is to provide a kind of lithium ion cell nano material one
System paste-making method guarantees the consistency of battery performance to improve slurry uniformity, shortens mixing time and without fugitive dust.
For achieving the above object, the present invention includes following pulping stage:
Anode sizing agent production includes the following steps:
(a) cathode active material, conductive agent, bonding agent, solvent are packed into automatic charging device, pass through self-measuring device
Mixing dispersion machine progress powder is automatically added in positive process recipe ratio and liquid integrates, 800~1200rpm of revolving speed, online
By discharge port automatically by mixed powder input-buffer tank after dispersion, mixed powder is in mixing dispersion machine, buffer tank and circulating tank
Transfer tank is inputted after carrying out four to six circulations repeatedly；
(b) mixed powder by transfer tank automatic transmission pipeline system input high speed disperser, with 25~28m/s of linear velocity into
Slurry is conveyed into cooling tank after the completion and carries out cooling and deaeration by the online high speed dispersion of row, high speed dispersion, completes cooling and deaeration
It carries out that anode sizing agent is obtained by filtration except iron by the strainer of 200~300 mesh afterwards；
Negative electrode slurry production includes the following steps:
(a) cathode pole active material, conductive agent, bonding agent, thickener, solvent are packed into automatic charging device, by certainly
Dynamic metering device is automatically added to mixing dispersion machine progress powder in cathode process recipe ratio and liquid integrates, and revolving speed 800~
1200rpm, by discharge port automatically by mixed powder input-buffer tank after line dispersion, mixed powder is mixing dispersion machine, is delaying
It deposits tank and circulating tank carries out input transfer tank after four to six circulations repeatedly；
(b) mixed powder by transfer tank automatic transmission pipeline system input high speed disperser, with 25~28m/s of linear velocity into
Slurry is conveyed into cooling tank after the completion and carries out cooling and deaeration by the online high speed dispersion of row, high speed dispersion, completes cooling and deaeration
It carries out that negative electrode slurry is obtained by filtration except iron by the strainer of 200~300 mesh afterwards.
The invention also includes another pulping stages:
Anode sizing agent production includes the following steps:
(a) cathode active material, conductive agent, bonding agent, solvent are packed into automatic charging device, pass through automatic charging device
Automatic metering system in positive process recipe ratio automatically and continuously by powder, solvent delivery enter Quimby pump cavity charging
Mouthful；
(b) 600~1000rpm of Quimby pump revolving speed is set, Zhen Kong Du≤- 0.65MPa is kept, keeping temperature is 30 ± 5 DEG C, high
Fast 3~5min of jitter time, from Quimby pump discharge port be transported to storage tank carry out deaeration, deaeration keep Zhen Kong Du≤-
0.85MPa, 5~10min of inclined heated plate use diaphragm pump that slurry is passed through iron removal filter system with 200~300 after the completion of deaeration
Anode sizing agent is obtained by filtration except iron in purpose filter screen；
Negative electrode slurry production includes the following steps:
(a) negative electrode active material material, conductive agent, bonding agent, thickener, solvent are packed into automatic charging device, by automatic
Powder, solvent delivery are automatically and continuously entered twin-screw pump chamber in cathode process recipe ratio by the automatic metering system of feeding device
Body feed inlet；
(b) 600~1000rpm of Quimby pump revolving speed is set, Zhen Kong Du≤- 0.65MPa is kept, keeping temperature is 30 ± 5 DEG C, high
Fast 3~5min of jitter time, from Quimby pump discharge port be transported to storage tank carry out deaeration, deaeration keep Zhen Kong Du≤-
0.85MPa, 5~10min of inclined heated plate use diaphragm pump that slurry is passed through iron removal filter system with 200~300 after the completion of deaeration
Negative electrode slurry is obtained by filtration except iron in purpose filter screen.
Each ingredient percent of the anode sizing agent substance are as follows: bonding agent 0.3~1.4%, positive active material 39~
74%, conductive agent 0.3~2.0%, solvent 25~60%；
Each ingredient percent of the negative electrode slurry substance are as follows: bonding agent 0.3~1.4%, negative electrode active material 36.0~
53.0%, conductive agent 0.3~2.0%, thickener 0.0~1.4%, solvent 45.0~60.0%；
The thickener is sodium carboxymethylcellulose CMC；
The bonding agent is PVAC polyvinylalcohol, polytetrafluoroethylene PTFE, Kynoar PVDF, styrene butadiene rubber sbr, fluorination rubber
Glue, polyurethane, any one or a few composition in polyacrylonitrile copolymer LA composite caking agent；
The conductive agent is graphite agent KS, carbon black conductive agent SP, carbon nanotube CNT, carbon nano-fiber, superconducting carbon black, stone
The combined conductive agent of any one or a few composition of black alkene；
The solvent is any one or a few double solvents formed of deionized water, N- methyl pyrrolidone NMP；
The positive active material is cobalt acid lithium, LiMn2O4, nickle cobalt lithium manganate, nickel cobalt lithium aluminate, LiFePO4, lithium ferric manganese phosphate
In the mixture of any one or more；
The negative electrode active material is natural graphite NG, artificial graphite AG, composite graphite CG, silicon-carbon cathode, appointing in lithium titanate
It anticipates one or more mixtures.
The present invention solves that the current lithium ion battery distributing process time is long, utilization rate of equipment and installations is low and output is low asks
Topic by auto feed, high speed dispersion, cools down deaeration and except iron filtering prepares pulp of lithium ion battery, is used for lithium ion battery
Anode sizing agent, negative electrode slurry dispersion, compared with prior art, have the advantage that
(1) from discharging all closed automated productions, process no shutdown is fed to, no material transfer is not necessarily to purge tank
Body, no fugitive dust, production site neat and tidy.
(2) mixing is carried out by shearing, dispersion, kneading mode, greatly improves the long problem of traditional handicraft mixing time,
It is particularly suitable for the dispersion of little particle large-specific surface area nano material；Good dispersion, uniform and smooth, viscosity, partial size, solid content, stream
Dynamic property is stablized.
(3) slurry jitter time is short, and the lithium ion battery distributing process time is controlled at one hour or so, technique is simplified
Process substantially increases production efficiency, is suitable for extensive lithium ion battery distributing stirring operation, greatly reduces energy consumption and people
Work cost.
Specific embodiment
Embodiment one
Anode sizing agent production includes the following steps: material using mass percent meter:
(1) PVDF(Kynoar), LiFePO4, CNT(carbon nanotube), the agent of KS(graphite), N- crassitude
Storing measuring tank is added in ketone solvent；
(2) by storing measuring tank by PVDF(Kynoar), LiFePO4, CNT(carbon nanotube), electrically conductive graphite, N- first
Base pyrrolidinone solvent 1.32(wt% in proportion): 41.58(wt%): 0.66(wt%): 0.44(wt%): 56.00(wt%) moved
State measures automatic continuous charging, is automatically added to mixing dispersion machine and carries out pre-dispersed (powder and liquid first integrate), and revolving speed 800~
1200rpm, by discharge port automatically by mixed powder input-buffer tank after line dispersion, mixed powder is mixing dispersion machine, is delaying
It deposits tank and circulating tank carries out input transfer tank after 4~6 circulations repeatedly；
(3) mixed powder inputs high speed dispersion speed machine by the automatic transmission pipeline system of transfer tank, with linear velocity 25m/s progress
Online high speed dispersion, first in first out continuous operation.Slurry is conveyed into cooling tank after the completion of high speed dispersion carry out it is cooling and de-
Bubble after completing cooling and deaeration carries out that slurry is obtained by filtration except iron by the strainer of 200 mesh.
Negative electrode slurry production includes the following steps: material using mass percent meter:
(1) CMC(sodium carboxymethylcellulose), AG(artificial graphite), the agent of SP(carbon black conductive), SBR(butadiene-styrene rubber), deionization
Storing measuring tank is added in aqueous solvent；
(2) by storing measuring tank by CMC(sodium carboxymethylcellulose), AG(artificial graphite), the agent of SP(carbon black conductive), SBR
(butadiene-styrene rubber), deionized water solvent 0.27(wt% in proportion): 52.66(wt%): 0.67(wt%): 0.41(wt%): 45.00
(wt%) the automatic continuous charging of dynamic measuring is carried out, mixing dispersion machine is automatically added to and carries out pre-dispersed (powder and liquid first integrate),
800~1200rpm of revolving speed, by discharge port automatically by mixed powder input-buffer tank after line dispersion, mixed powder is being mixed
Dispersion machine, buffer tank and circulating tank input transfer tank after carrying out 4~6 circulations repeatedly；
(3) mixed powder inputs high speed dispersion speed machine by the automatic transmission pipeline system of transfer tank, with linear velocity 21m/s progress
Online high speed dispersion, first in first out continuous operation.Slurry is conveyed into cooling tank after the completion of high speed dispersion and carries out cooling and deaeration,
After completing cooling and deaeration carry out that slurry is obtained by filtration except iron by the strainer of 200 mesh.
Embodiment two
Anode sizing agent production includes the following steps: material using mass percent meter:
(1) PVDF(Kynoar), nickle cobalt lithium manganate, the agent of SP(carbon black conductive), the agent of KS(graphite), N- methyl pyrrole
Storing measuring tank is added in pyrrolidone solvent；
(2) by storing measuring tank by PVDF(Kynoar), nickle cobalt lithium manganate, the agent of SP(carbon black conductive), KS(graphite
Agent), N-Methyl pyrrolidone solvent 1.02(wt% in proportion): 65.62(wt%): 0.68(wt%): 0.68(wt%): 32.00
(wt%) it carries out dynamic measuring automatically continuously to feed, powder main material and solvent delivery is entered into Quimby pump cavity feed inlet；
(3) 600~1000rpm of Quimby pump revolving speed is set, Zhen Kong Du≤- 0.65MPa is kept, keeping temperature is 30 ± 5 DEG C, high
Fast 3~5min of jitter time, from Quimby pump discharge port be transported to storage tank carry out deaeration, deaeration keep Zhen Kong Du≤-
0.85MPa, 5~10min of inclined heated plate use diaphragm pump that slurry is passed through iron removal filter system with 200~300 after the completion of deaeration
Slurry is obtained by filtration except iron in purpose filter screen.
Negative electrode slurry production includes the following steps: material using mass percent meter:
(1) CMC(sodium carboxymethylcellulose), AG(artificial graphite), the agent of SP(carbon black conductive), SBR(butadiene-styrene rubber), deionization
Storing measuring tank is added in aqueous solvent；
(2) by storing measuring tank by CMC(sodium carboxymethylcellulose), AG(artificial graphite), the agent of SP(carbon black conductive), SBR(fourth
Benzene rubber), deionized water solvent 0.27(wt% in proportion): 47.41(wt%): 0.92(wt%): 0.41(wt%): 50.00(wt%)
It carries out dynamic measuring automatically continuously to feed, powder main material and solvent delivery is entered into Quimby pump cavity feed inlet；
(3) 600~1000rpm of Quimby pump revolving speed is set, Zhen Kong Du≤- 0.65MPa is kept, keeping temperature is 30 ± 5 DEG C,
3~5min of high speed dispersion time, from Quimby pump discharge port be transported to storage tank carry out deaeration, deaeration keep Zhen Kong Du≤-
0.85MPa, 5~10min of inclined heated plate use diaphragm pump that slurry is passed through iron removal filter system with 200~300 after the completion of deaeration
Slurry is obtained by filtration except iron in purpose filter screen.
Embodiment three
Anode sizing agent production includes the following steps: material using mass percent meter:
(1) PVDF(Kynoar), nickel cobalt lithium aluminate, the agent of SP(carbon black conductive), the agent of KS(graphite), N- methyl pyrrole
Storing measuring tank is added in pyrrolidone solvent；
(2) by storing measuring tank by PVDF(Kynoar), nickel cobalt lithium aluminate, the agent of SP(carbon black conductive), KS(graphite
Agent), N-Methyl pyrrolidone solvent 1.01(wt% in proportion): 55.68(wt%): 0.68(wt%): 0.55(wt%): 42.08
(wt%) it carries out dynamic measuring automatically continuously to feed, powder main material and solvent delivery is entered into Quimby pump cavity feed inlet；
(3) 600~1000rpm of Quimby pump revolving speed is set, Zhen Kong Du≤- 0.65MPa is kept, keeping temperature is 30 ± 5 DEG C, high
Fast 3~5min of jitter time, from Quimby pump discharge port be transported to storage tank carry out deaeration, deaeration keep Zhen Kong Du≤-
0.85MPa, 5~10min of inclined heated plate use diaphragm pump that slurry is passed through iron removal filter system with 200~300 after the completion of deaeration
Slurry is obtained by filtration except iron in purpose filter screen.
Negative electrode slurry production includes the following steps: material using mass percent meter:
(1) CMC(sodium carboxymethylcellulose), AG(artificial graphite), the agent of SP(carbon black conductive), SBR(butadiene-styrene rubber), deionization
Storing measuring tank is added in aqueous solvent；
(2) by storing measuring tank by CMC(sodium carboxymethylcellulose), AG(artificial graphite), the agent of SP(carbon black conductive), SBR(fourth
Benzene rubber), deionized water solvent 0.27(wt% in proportion): 42.41(wt%): 0.92(wt%): 0.41(wt%): 55.00(wt%)
It carries out dynamic measuring automatically continuously to feed, powder main material and solvent delivery is entered into Quimby pump cavity feed inlet；
(3) 600~1000rpm of Quimby pump revolving speed is set, Zhen Kong Du≤- 0.65MPa is kept, keeping temperature is 30 ± 5 DEG C, high
Fast 3~5min of jitter time, from Quimby pump discharge port be transported to storage tank carry out deaeration, deaeration keep Zhen Kong Du≤-
0.85MPa, 5~10min of inclined heated plate use diaphragm pump that slurry is passed through iron removal filter system with 200~300 after the completion of deaeration
Slurry is obtained by filtration except iron in purpose filter screen.
Claims (3)
1. a kind of lithium ion cell nano material one pulping process, it is characterised in that: the following steps are included:
Anode sizing agent production includes the following steps:
(a) cathode active material, conductive agent, bonding agent, solvent are packed into automatic charging device, pass through self-measuring device
Mixing dispersion machine progress powder is automatically added in positive process recipe ratio and liquid integrates, 800~1200rpm of revolving speed, online
By discharge port automatically by mixed powder input-buffer tank after dispersion, mixed powder is in mixing dispersion machine, buffer tank and circulating tank
Transfer tank is inputted after carrying out four to six circulations repeatedly；
(b) mixed powder by transfer tank automatic transmission pipeline system input high speed disperser, with 25~28m/s of linear velocity into
Slurry is conveyed into cooling tank after the completion and carries out cooling and deaeration by the online high speed dispersion of row, high speed dispersion, completes cooling and deaeration
It carries out that anode sizing agent is obtained by filtration except iron by the strainer of 200~300 mesh afterwards；
Negative electrode slurry production includes the following steps:
(a) cathode pole active material, conductive agent, bonding agent, thickener, solvent are packed into automatic charging device, by certainly
Dynamic metering device is automatically added to mixing dispersion machine progress powder in cathode process recipe ratio and liquid integrates, and revolving speed 800~
1200rpm, by discharge port automatically by mixed powder input-buffer tank after line dispersion, mixed powder is mixing dispersion machine, is delaying
It deposits tank and circulating tank carries out input transfer tank after four to six circulations repeatedly；
(b) mixed powder by transfer tank automatic transmission pipeline system input high speed disperser, with 25~28m/s of linear velocity into
Slurry is conveyed into cooling tank after the completion and carries out cooling and deaeration by the online high speed dispersion of row, high speed dispersion, completes cooling and deaeration
It carries out that negative electrode slurry is obtained by filtration except iron by the strainer of 200~300 mesh afterwards.
2. a kind of lithium ion cell nano material one pulping process, it is characterised in that: the following steps are included:
Anode sizing agent production includes the following steps:
(a) cathode active material, conductive agent, bonding agent, solvent are packed into automatic charging device, pass through automatic charging device
Automatic metering system in positive process recipe ratio automatically and continuously by powder, solvent delivery enter Quimby pump cavity charging
Mouthful；
(b) 600~1000rpm of Quimby pump revolving speed is set, Zhen Kong Du≤- 0.65MPa is kept, keeping temperature is 30 ± 5 DEG C, high
Fast 3~5min of jitter time, from Quimby pump discharge port be transported to storage tank carry out deaeration, deaeration keep Zhen Kong Du≤-
0.85MPa, 5~10min of inclined heated plate use diaphragm pump that slurry is passed through iron removal filter system with 200~300 after the completion of deaeration
Anode sizing agent is obtained by filtration except iron in purpose filter screen；
Negative electrode slurry production includes the following steps:
(a) negative electrode active material material, conductive agent, bonding agent, thickener, solvent are packed into automatic charging device, by automatic
Powder, solvent delivery are automatically and continuously entered twin-screw pump chamber in cathode process recipe ratio by the automatic metering system of feeding device
Body feed inlet；
(b) 600~1000rpm of Quimby pump revolving speed is set, Zhen Kong Du≤- 0.65MPa is kept, keeping temperature is 30 ± 5 DEG C, high
Fast 3~5min of jitter time, from Quimby pump discharge port be transported to storage tank carry out deaeration, deaeration keep Zhen Kong Du≤-
0.85MPa, 5~10min of inclined heated plate use diaphragm pump that slurry is passed through iron removal filter system with 200~300 after the completion of deaeration
Negative electrode slurry is obtained by filtration except iron in purpose filter screen.
3. a kind of lithium ion cell nano material one pulping process according to claim 1 or 2, it is characterised in that: institute
State each ingredient percent of anode sizing agent substance are as follows: bonding agent 0.3~1.4%, positive active material 39~74%, conductive agent
0.3~2.0%, solvent 25~60%；
Each ingredient percent of the negative electrode slurry substance are as follows: bonding agent 0.3~1.4%, negative electrode active material 36.0~
53.0%, conductive agent 0.3~2.0%, thickener 0.0~1.4%, solvent 45.0~60.0%；
The thickener is sodium carboxymethylcellulose CMC；
The bonding agent is PVAC polyvinylalcohol, polytetrafluoroethylene PTFE, Kynoar PVDF, styrene butadiene rubber sbr, fluorination rubber
Glue, polyurethane, any one or a few composition in polyacrylonitrile copolymer LA composite caking agent；
The conductive agent is graphite agent KS, carbon black conductive agent SP, carbon nanotube CNT, carbon nano-fiber, superconducting carbon black, stone
The combined conductive agent of any one or a few composition of black alkene；
The solvent is any one or a few double solvents formed of deionized water, N- methyl pyrrolidone NMP；
The positive active material is cobalt acid lithium, LiMn2O4, nickle cobalt lithium manganate, nickel cobalt lithium aluminate, LiFePO4, lithium ferric manganese phosphate
In the mixture of any one or more；
The negative electrode active material is natural graphite NG, artificial graphite AG, composite graphite CG, silicon-carbon cathode, appointing in lithium titanate
It anticipates one or more mixtures.
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| CN201810266933.3A CN110323407A (en) | 2018-03-28 | 2018-03-28 | A kind of lithium ion cell nano material one pulping process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110690412A (en) * | 2019-10-22 | 2020-01-14 | 合肥国轩高科动力能源有限公司 | Ternary lithium ion battery positive plate, preparation method thereof and battery |
| CN112687873A (en) * | 2020-12-23 | 2021-04-20 | 湖南永盛新材料股份有限公司 | Preparation method of high-specific-energy lithium battery |
-
2018
- 2018-03-28 CN CN201810266933.3A patent/CN110323407A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110690412A (en) * | 2019-10-22 | 2020-01-14 | 合肥国轩高科动力能源有限公司 | Ternary lithium ion battery positive plate, preparation method thereof and battery |
| CN110690412B (en) * | 2019-10-22 | 2021-11-02 | 合肥国轩高科动力能源有限公司 | Ternary lithium ion battery positive plate, preparation method thereof and battery |
| CN112687873A (en) * | 2020-12-23 | 2021-04-20 | 湖南永盛新材料股份有限公司 | Preparation method of high-specific-energy lithium battery |
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