CN111081970A - Slurry mixing process for improving solid content of slurry - Google Patents
Slurry mixing process for improving solid content of slurry Download PDFInfo
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- CN111081970A CN111081970A CN201911352740.0A CN201911352740A CN111081970A CN 111081970 A CN111081970 A CN 111081970A CN 201911352740 A CN201911352740 A CN 201911352740A CN 111081970 A CN111081970 A CN 111081970A
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- 239000007787 solid Substances 0.000 title claims abstract description 40
- 239000002002 slurry Substances 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000003756 stirring Methods 0.000 claims abstract description 282
- 239000006185 dispersion Substances 0.000 claims abstract description 57
- 238000007790 scraping Methods 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims abstract description 21
- 238000007599 discharging Methods 0.000 claims abstract description 6
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 239000012752 auxiliary agent Substances 0.000 claims description 10
- 230000001276 controlling effect Effects 0.000 claims description 10
- 229910021389 graphene Inorganic materials 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims description 10
- 239000010935 stainless steel Substances 0.000 claims description 10
- 239000002033 PVDF binder Substances 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 5
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 abstract description 7
- 238000000576 coating method Methods 0.000 abstract description 7
- 239000002904 solvent Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000011112 process operation Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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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
-
- 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
Abstract
The invention discloses a slurry mixing process for improving solid content of slurry, which comprises the following steps: s1, feeding for the first time; s2, adding NMP for the first time; s3, carrying out forward rotation stirring for the first time; s4, stirring in a forward rotation mode for the second time; s5, scraping for the first time; s6, stirring in a forward rotation mode for the third time; s7, adding materials for the second time; s8, stirring in the forward rotation for the fourth time; s9, stirring for the fifth forward rotation; s10, scraping for the second time; s11, adding a dispersing aid; s12, adding NMP for the second time; s13, stirring in the sixth forward rotation; s14, carrying out forward rotation stirring for the seventh time; s15, scraping the bottom of a shovel; s16, stirring in the eighth forward rotation; s17, detecting; and S18, discharging. The invention adopts the process steps of stirring, high-speed dispersion and scraping for multiple times, has simple process operation, can improve the solid content of the slurry, reduce the using amount of the solvent, save the material cost, improve the coating efficiency, save the energy consumption cost and the labor cost, and improve the dispersion effect and the consistency of the slurry.
Description
Technical Field
The invention relates to the technical field of battery processes, in particular to a slurry mixing process for improving the solid content of slurry.
Background
With the increasingly competitive power battery industry, enterprises are increasingly looking at cost control, and energy saving and cost reduction become a core strategic direction of the enterprises. The slurry prepared by the traditional slurry mixing process has low solid content, so that the solvent consumption is large, the viscosity is high, the requirement on the feeding equipment of a coating machine is high, the coating efficiency is low, the solvent cannot be dried at the too high coating speed, and the dispersion effect and consistency of the slurry are poor.
Therefore, a pulp mixing process for improving the solid content of the pulp is provided.
Disclosure of Invention
The invention aims to provide a slurry mixing process for improving the solid content of slurry, which adopts the process steps of multiple stirring, high-speed dispersion and scraping, has simple process operation, can improve the solid content of the slurry, reduce the using amount of a solvent, save the material cost, improve the coating efficiency, save the energy consumption cost and the labor cost, and improve the dispersion effect and the consistency of the slurry so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a pulp mixing process for improving solid content of pulp comprises the following steps:
s1, first feeding:
adding all the graphene, PVDF and SP into a stirring barrel of a stirring dispersion machine;
s2, first addition of NMP:
adding NMP into a stirring barrel of a stirring dispersion machine, and controlling the solid content to be 70-73%;
s3, primary forward rotation stirring:
starting a stirring dispersion machine to drive a stirring paddle to rotate, wherein the stirring speed is 10-20 rpm, the stirring time is 4-6 min, and carrying out primary forward rotation stirring;
s4, stirring in forward rotation for the second time:
stirring at a speed of 15-25 rpm, a dispersion speed of 900-1100 rpm for 8-12 min, and performing secondary forward rotation stirring;
s5, first scraping:
scraping the powder on the stirring paddle and the wall of the stirring barrel into the stirring barrel;
s6, stirring in the third forward rotation mode:
stirring at a speed of 15-25 rpm, a dispersion speed of 900-1100 rpm for 8-12 min, and carrying out forward rotation stirring for the third time;
s7, adding for the second time:
adding all the lithium iron phosphate into a stirring barrel of a stirring dispersion machine;
s8, fourth forward rotation stirring:
stirring at the rotating speed of 13-17 rpm for 8-12 min, and carrying out forward rotation stirring for the fourth time;
s9, fifth normal rotation stirring:
stirring at the rotating speed of 20-24 rpm for 40-60 min, and performing fifth forward rotation stirring;
s10, scraping for the second time:
scraping the powder on the stirring paddle and the wall of the stirring barrel into the stirring barrel;
s11, adding a dispersing aid:
adding a dispersing auxiliary agent into a stirring barrel of a stirring dispersion machine, wherein the adding amount of the dispersing auxiliary agent is 0.2-0.8% of the weight of the lithium iron phosphate;
s12, second NMP addition:
adding NMP into a stirring barrel of a stirring dispersion machine, and controlling the solid content to be at an expected value;
s13, sixth forward rotation stirring:
stirring at a speed of 15-25 rpm, a dispersion speed of 250-350 rpm for 8-12 min, and performing sixth forward rotation stirring;
s14, seventh forward rotation stirring:
stirring at a rotation speed of 15-25 rpm, a dispersion rotation speed of 1100-1300 rpm and a stirring time of 12-18 min, and performing seventh forward rotation stirring;
s15, scraping the bottom of the shovel:
scraping materials on the stirring paddle and the wall of the stirring barrel into the barrel, and turning up the materials deposited at the bottom of the stirring barrel;
s16, eighth forward rotation stirring:
stirring at a speed of 22-28 rpm, a dispersion speed of 1100-1300 rpm for 30-50 min, and performing eighth forward rotation stirring;
s17, detection:
testing the viscosity, fineness and solid content of the slurry in a stirring barrel of the stirring dispersion machine;
and S18, discharging.
Preferably, the stirring dispersion machine adopts a stainless steel stirring barrel and a stainless steel stirring paddle, and the speed is regulated through frequency conversion.
Preferably, the stirring temperature of the stirring disperser in S3, S4 and S6 is 20-25 ℃.
Preferably, the stirring temperature of the stirring disperser in S8 and S9 is 30-38 ℃.
Preferably, the stirring temperature of the stirring disperser in S13, S14 and S16 is 22-28 ℃.
Preferably, in the steps S5, S10 and S15, the material is scraped and the bottom is shoveled by an electric scraper.
Preferably, screening is performed by a screen before graphene is added in S1 and before lithium iron phosphate is added in S7.
Compared with the prior art, the invention has the beneficial effects that: according to the slurry mixing process for improving the solid content of the slurry, provided by the invention, the process steps of multiple stirring, high-speed dispersion and material scraping are adopted, the process operation is simple, the solid content of the slurry can be improved, the using amount of a solvent is reduced, the material cost is saved, the coating efficiency can be improved, the energy consumption cost and the labor cost are saved, and the dispersion effect and the consistency of the slurry can be improved.
Drawings
Fig. 1 is a schematic flow chart of a slurry mixing process for increasing solid content of slurry according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
A pulp mixing process for improving solid content of pulp comprises the following steps:
s1, first feeding:
adding all the graphene, PVDF and SP into a stirring barrel of a stirring dispersion machine;
s2, first addition of NMP:
adding NMP into a stirring barrel of a stirring dispersion machine, and controlling the solid content to be 70%;
s3, primary forward rotation stirring:
starting a stirring dispersion machine to drive a stirring paddle to rotate, wherein the stirring speed is 10rpm, the stirring time is 4min, and carrying out primary forward rotation stirring;
s4, stirring in forward rotation for the second time:
stirring at 15rpm, 900rpm and 8min for the second forward rotation;
s5, first scraping:
scraping the powder on the stirring paddle and the wall of the stirring barrel into the stirring barrel;
s6, stirring in the third forward rotation mode:
stirring at 15rpm, 900rpm for 8min, and performing forward rotation for the third time;
s7, adding for the second time:
adding all the lithium iron phosphate into a stirring barrel of a stirring dispersion machine;
s8, fourth forward rotation stirring:
stirring at 13rpm for 8min, and performing forward rotation for the fourth time;
s9, fifth normal rotation stirring:
stirring at 20rpm for 40min, and performing fifth forward rotation;
s10, scraping for the second time:
scraping the powder on the stirring paddle and the wall of the stirring barrel into the stirring barrel;
s11, adding a dispersing aid:
adding a dispersing auxiliary agent into a stirring barrel of a stirring dispersion machine, wherein the adding amount of the dispersing auxiliary agent is 0.2% of the weight of the lithium iron phosphate;
s12, second NMP addition:
adding NMP into a stirring barrel of a stirring dispersion machine, and controlling the solid content to be at an expected value;
s13, sixth forward rotation stirring:
stirring at 15rpm, dispersing at 250rpm for 8min, and performing sixth forward rotation;
s14, seventh forward rotation stirring:
stirring at 15rpm, 1100rpm for 12min, and performing seventh forward rotation;
s15, scraping the bottom of the shovel:
scraping materials on the stirring paddle and the wall of the stirring barrel into the barrel, and turning up the materials deposited at the bottom of the stirring barrel;
s16, eighth forward rotation stirring:
stirring at 22rpm, 1100rpm for 30min, and performing eighth forward rotation;
s17, detection:
testing the viscosity, fineness and solid content of the slurry in a stirring barrel of the stirring dispersion machine;
and S18, discharging.
The stirring disperser adopts a stainless steel stirring barrel and a stainless steel stirring paddle, and is subjected to variable frequency speed regulation, the stirring temperature of the stirring disperser in S3, S4 and S6 is 20 ℃, the stirring temperature of the stirring disperser in S8 and S9 is 30 ℃, the stirring temperature of the stirring disperser in S13, S14 and S16 is 22 ℃, materials are scraped and shoveled by an electric scraper in S5, S10 and S15, and screening is carried out by a screen mesh before graphene is added and before lithium iron phosphate is added in S7 in S1.
Example 2
A pulp mixing process for improving solid content of pulp comprises the following steps:
s1, first feeding:
adding all the graphene, PVDF and SP into a stirring barrel of a stirring dispersion machine;
s2, first addition of NMP:
adding NMP into a stirring barrel of a stirring dispersion machine, and controlling the solid content to be 72%;
s3, primary forward rotation stirring:
starting a stirring dispersion machine to drive a stirring paddle to rotate, wherein the stirring speed is 15rpm, the stirring time is 5min, and carrying out primary forward rotation stirring;
s4, stirring in forward rotation for the second time:
stirring at 20rpm, dispersing at 1000rpm for 10min, and performing a second forward rotation;
s5, first scraping:
scraping the powder on the stirring paddle and the wall of the stirring barrel into the stirring barrel;
s6, stirring in the third forward rotation mode:
stirring at 20rpm, dispersing at 1000rpm for 10min, and performing forward rotation for the third time;
s7, adding for the second time:
adding all the lithium iron phosphate into a stirring barrel of a stirring dispersion machine;
s8, fourth forward rotation stirring:
stirring at 15rpm for 10min, and performing forward rotation for the fourth time;
s9, fifth normal rotation stirring:
stirring at 22rpm for 50min, and performing fifth forward rotation;
s10, scraping for the second time:
scraping the powder on the stirring paddle and the wall of the stirring barrel into the stirring barrel;
s11, adding a dispersing aid:
adding a dispersing auxiliary agent into a stirring barrel of a stirring dispersion machine, wherein the adding amount of the dispersing auxiliary agent is 0.5 percent of the weight of the lithium iron phosphate;
s12, second NMP addition:
adding NMP into a stirring barrel of a stirring dispersion machine, and controlling the solid content to be at an expected value;
s13, sixth forward rotation stirring:
stirring at 20rpm, 300rpm for 10min, and performing sixth forward rotation;
s14, seventh forward rotation stirring:
stirring at 20rpm, 1200rpm for 15min, and performing seventh forward rotation;
s15, scraping the bottom of the shovel:
scraping materials on the stirring paddle and the wall of the stirring barrel into the barrel, and turning up the materials deposited at the bottom of the stirring barrel;
s16, eighth forward rotation stirring:
stirring at 25rpm, 1200rpm for 40min, and performing eighth forward rotation;
s17, detection:
testing the viscosity, fineness and solid content of the slurry in a stirring barrel of the stirring dispersion machine;
and S18, discharging.
The stirring disperser adopts a stainless steel stirring barrel and a stainless steel stirring paddle, and is subjected to variable frequency speed regulation, the stirring temperature of the stirring disperser in S3, S4 and S6 is 22 ℃, the stirring temperature of the stirring disperser in S8 and S9 is 34 ℃, the stirring temperature of the stirring disperser in S13, S14 and S16 is 25 ℃, the stirring temperature of the stirring disperser in S5, S10 and S15 is scraped and shoveled by an electric scraper, and the stirring disperser is screened by a screen mesh before adding graphene and before adding lithium iron phosphate in S7 in S1.
Example 3
A pulp mixing process for improving solid content of pulp comprises the following steps:
s1, first feeding:
adding all the graphene, PVDF and SP into a stirring barrel of a stirring dispersion machine;
s2, first addition of NMP:
adding NMP into a stirring barrel of a stirring dispersion machine, and controlling the solid content to be 73%;
s3, primary forward rotation stirring:
starting a stirring dispersion machine to drive a stirring paddle to rotate, wherein the stirring speed is 20rpm, the stirring time is 6min, and carrying out primary forward rotation stirring;
s4, stirring in forward rotation for the second time:
stirring at 25rpm, 1100rpm, and 12min for the second forward rotation;
s5, first scraping:
scraping the powder on the stirring paddle and the wall of the stirring barrel into the stirring barrel;
s6, stirring in the third forward rotation mode:
stirring at 25rpm, 1100rpm for 12min, and performing forward rotation for the third time;
s7, adding for the second time:
adding all the lithium iron phosphate into a stirring barrel of a stirring dispersion machine;
s8, fourth forward rotation stirring:
stirring at the rotating speed of 17rpm for 12min, and performing forward rotation stirring for the fourth time;
s9, fifth normal rotation stirring:
stirring at 24rpm for 60min, and performing fifth forward rotation;
s10, scraping for the second time:
scraping the powder on the stirring paddle and the wall of the stirring barrel into the stirring barrel;
s11, adding a dispersing aid:
adding a dispersing auxiliary agent into a stirring barrel of a stirring dispersion machine, wherein the adding amount of the dispersing auxiliary agent is 0.8 percent of the weight of the lithium iron phosphate;
s12, second NMP addition:
adding NMP into a stirring barrel of a stirring dispersion machine, and controlling the solid content to be at an expected value;
s13, sixth forward rotation stirring:
stirring at 25rpm, 350rpm for 12min, and performing sixth forward rotation;
s14, seventh forward rotation stirring:
stirring at 25rpm, 1300rpm for dispersing at 18min, and performing seventh forward rotation;
s15, scraping the bottom of the shovel:
scraping materials on the stirring paddle and the wall of the stirring barrel into the barrel, and turning up the materials deposited at the bottom of the stirring barrel;
s16, eighth forward rotation stirring:
stirring at 28rpm, 1300rpm for 50min, and performing eighth forward rotation;
s17, detection:
testing the viscosity, fineness and solid content of the slurry in a stirring barrel of the stirring dispersion machine;
and S18, discharging.
The stirring disperser adopts a stainless steel stirring barrel and a stainless steel stirring paddle, and is subjected to variable frequency speed regulation, the stirring temperature of the stirring disperser in S3, S4 and S6 is 25 ℃, the stirring temperature of the stirring disperser in S8 and S9 is 38 ℃, the stirring temperature of the stirring disperser in S13, S14 and S16 is 28 ℃, materials are scraped and shoveled by an electric scraper in S5, S10 and S15, and screening is carried out by a screen mesh before graphene is added and before lithium iron phosphate is added in S7 in S1.
In summary, the following steps: according to the slurry mixing process for improving the solid content of the slurry, provided by the invention, the process steps of multiple stirring, high-speed dispersion and material scraping are adopted, the process operation is simple, the solid content of the slurry can be improved, the using amount of a solvent is reduced, the material cost is saved, the coating efficiency can be improved, the energy consumption cost and the labor cost are saved, and the dispersion effect and the consistency of the slurry can be improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. A pulp mixing process for improving solid content of pulp is characterized by comprising the following steps:
s1, first feeding:
adding all the graphene, PVDF and SP into a stirring barrel of a stirring dispersion machine;
s2, first addition of NMP:
adding NMP into a stirring barrel of a stirring dispersion machine, and controlling the solid content to be 70-73%;
s3, primary forward rotation stirring:
starting a stirring dispersion machine to drive a stirring paddle to rotate, wherein the stirring speed is 10-20 rpm, the stirring time is 4-6 min, and carrying out primary forward rotation stirring;
s4, stirring in forward rotation for the second time:
stirring at a speed of 15-25 rpm, a dispersion speed of 900-1100 rpm for 8-12 min, and performing secondary forward rotation stirring;
s5, first scraping:
scraping the powder on the stirring paddle and the wall of the stirring barrel into the stirring barrel;
s6, stirring in the third forward rotation mode:
stirring at a speed of 15-25 rpm, a dispersion speed of 900-1100 rpm for 8-12 min, and carrying out forward rotation stirring for the third time;
s7, adding for the second time:
adding all the lithium iron phosphate into a stirring barrel of a stirring dispersion machine;
s8, fourth forward rotation stirring:
stirring at the rotating speed of 13-17 rpm for 8-12 min, and carrying out forward rotation stirring for the fourth time;
s9, fifth normal rotation stirring:
stirring at the rotating speed of 20-24 rpm for 40-60 min, and performing fifth forward rotation stirring;
s10, scraping for the second time:
scraping the powder on the stirring paddle and the wall of the stirring barrel into the stirring barrel;
s11, adding a dispersing aid:
adding a dispersing auxiliary agent into a stirring barrel of a stirring dispersion machine, wherein the adding amount of the dispersing auxiliary agent is 0.2-0.8% of the weight of the lithium iron phosphate;
s12, second NMP addition:
adding NMP into a stirring barrel of a stirring dispersion machine, and controlling the solid content to be at an expected value;
s13, sixth forward rotation stirring:
stirring at a speed of 15-25 rpm, a dispersion speed of 250-350 rpm for 8-12 min, and performing sixth forward rotation stirring;
s14, seventh forward rotation stirring:
stirring at a rotation speed of 15-25 rpm, a dispersion rotation speed of 1100-1300 rpm and a stirring time of 12-18 min, and performing seventh forward rotation stirring;
s15, scraping the bottom of the shovel:
scraping materials on the stirring paddle and the wall of the stirring barrel into the barrel, and turning up the materials deposited at the bottom of the stirring barrel;
s16, eighth forward rotation stirring:
stirring at a speed of 22-28 rpm, a dispersion speed of 1100-1300 rpm for 30-50 min, and performing eighth forward rotation stirring;
s17, detection:
testing the viscosity, fineness and solid content of the slurry in a stirring barrel of the stirring dispersion machine;
and S18, discharging.
2. The pulp mixing process for improving the solid content of the pulp as claimed in claim 1, wherein: the stirring dispersion machine adopts a stainless steel stirring barrel and a stainless steel stirring paddle and is regulated through frequency conversion.
3. The pulp mixing process for improving the solid content of the pulp as claimed in claim 1, wherein: the stirring temperature of the stirring dispersion machine in the S3, the S4 and the S6 is 20-25 ℃.
4. The pulp mixing process for improving the solid content of the pulp as claimed in claim 1, wherein: and the stirring temperature of the stirring disperser in the S8 and the S9 is 30-38 ℃.
5. The pulp mixing process for improving the solid content of the pulp as claimed in claim 1, wherein: the stirring temperature of the stirring disperser in the S13, the S14 and the S16 is 22-28 ℃.
6. The pulp mixing process for improving the solid content of the pulp as claimed in claim 1, wherein: in the S5, S10 and S15, the material is scraped and the bottom is shoveled by an electric scraper.
7. The pulp mixing process for improving the solid content of the pulp as claimed in claim 1, wherein: screening by a screen mesh before adding graphene in S1 and before adding lithium iron phosphate in S7.
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| CN113270570A (en) * | 2021-05-07 | 2021-08-17 | 深圳衍化新能源科技有限公司 | Preparation method of lithium ion battery anode slurry |
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| CN107302078A (en) * | 2017-07-03 | 2017-10-27 | 江西安驰新能源科技有限公司 | A kind of lithium iron phosphate cathode slurry stirring technique |
| CN110518241A (en) * | 2019-08-30 | 2019-11-29 | 江西安驰新能源科技有限公司 | A kind of high efficiency dispersion technique of graphite cathode material |
| CN110534695A (en) * | 2019-08-30 | 2019-12-03 | 江西安驰新能源科技有限公司 | A kind of lithium ion cell positive slurry-stirring process |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111883738A (en) * | 2020-08-02 | 2020-11-03 | 江西安驰新能源科技有限公司 | High-temperature low-energy-consumption positive pole slurry mixing process |
| CN113270570A (en) * | 2021-05-07 | 2021-08-17 | 深圳衍化新能源科技有限公司 | Preparation method of lithium ion battery anode slurry |
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Denomination of invention: A Mixing Process for Increasing the Solid Content of Pulp Effective date of registration: 20231124 Granted publication date: 20210205 Pledgee: Jiangxi Guangxin Rural Commercial Bank Co.,Ltd. Pledgor: JIANGXI ANC NEW ENERGY TECHNOLOGY Co.,Ltd. Registration number: Y2023980067648 |