CN113097457A - High-stability fluorinated carbohydrate slurry and preparation method thereof - Google Patents

High-stability fluorinated carbohydrate slurry and preparation method thereof Download PDF

Info

Publication number
CN113097457A
CN113097457A CN202110323811.5A CN202110323811A CN113097457A CN 113097457 A CN113097457 A CN 113097457A CN 202110323811 A CN202110323811 A CN 202110323811A CN 113097457 A CN113097457 A CN 113097457A
Authority
CN
China
Prior art keywords
slurry
binder
agent
high stability
mixer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110323811.5A
Other languages
Chinese (zh)
Inventor
苏晓倩
刘雪省
王九洲
陈燕
杨芳凝
邱家栋
国天骄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CETC 18 Research Institute
Original Assignee
CETC 18 Research Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CETC 18 Research Institute filed Critical CETC 18 Research Institute
Priority to CN202110323811.5A priority Critical patent/CN113097457A/en
Publication of CN113097457A publication Critical patent/CN113097457A/en
Pending legal-status Critical Current

Links

Images

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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
    • 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
    • H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
    • H01M4/582—Halogenides
    • 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
    • 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)
  • Inorganic Chemistry (AREA)
  • Composite Materials (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The invention provides a high-stability fluorinated carbohydrate slurry and a preparation method thereof, wherein the preparation method comprises the following steps: the conductive coating comprises active substances, a conductive agent, a binder, a thickening agent and a dispersing agent, wherein the mass ratio of the active substances to the binder is as follows: conductive agent: adhesive: thickening agent: the dispersant comprises (80-98), (12-0.5), (8-1), (4-0.2), (1-0.3); wherein the dispersing agent is one or more of ammonium perfluorooctanoate, nonylphenol polyoxyethylene ether and polyethylene glycol p-isooctyl phenyl ether. The method has the advantages that the exogenous dispersant is mixed into the fluorinated carbon water system slurry, the dispersant adsorbed by the CFx is supplemented into the slurry through the exogenous dispersant, so that the viscosity of the slurry cannot be greatly increased to cause a demulsification phenomenon, the viscosity of the slurry is ensured to have certain viscoelasticity and fluidity, the method is simple and easy to operate, convenient and fast, and suitable for large-scale production, and the stability of the fluorinated carbon water system slurry is greatly improved.

Description

High-stability fluorinated carbohydrate slurry and preparation method thereof
Technical Field
The invention belongs to the technical field of lithium carbon fluoride batteries, and particularly relates to high-stability fluorinated carbon series slurry and a preparation method thereof.
Background
The lithium primary battery has the advantages of high specific energy, low self-discharge rate, good safety and the like, and becomes a preferred system of a military chemical power supply. The carbon fluoride positive plate is a main component of the lithium carbon fluoride battery, and the uniformity and consistency of the carbon fluoride positive plate have important influence on the performance of the battery. As a first step of the process of preparing the positive electrode, the homogenization process is to uniformly distribute the active material, the conductive agent and the binder, maintain the stability of the structure and components, and prevent the segregation of components such as agglomeration.
The common binders are mainly divided into an oil system and a water system, polyvinylidene fluoride (PVDF) is usually used together with N-methyl pyrrolidone, is a common oil binder and has the advantages of good stability and easy dispersion, but the adoption of an organic solvent has safety and environmental problems, and particularly for an electrode with expansion characteristics such as carbon fluoride, the surface contact bonding mode of the oil binder can cause the matrix to be bonded not firmly, so that the discharge performance is influenced.
Therefore, for lithium fluorocarbon electrodes, an aqueous binder is often used. Examples of the conventional positive electrode aqueous binder include Polytetrafluoroethylene (PTFE) binder and polypropylene-based binder. However, during the use process, the phenomenon that the viscosity of the carbon fluoride anode slurry is greatly changed along with stirring and dispersion of the slurry, particularly after the binder is added, is found, and sometimes even demulsification occurs. Too high viscosity is not beneficial to controlling the coating amount of the subsequent coating process and maintaining the consistency among different batches; if the emulsion breaking phenomenon occurs, the slurry will be fiberized, lose viscoelasticity and fluidity, and cause coating failure.
Under a fixed formula, factors influencing the viscosity of the lithium fluorocarbon electrode slurry mainly comprise stirring speed, stirring time, feeding sequence, ambient temperature and the like, but essentially, all components of the slurry form a non-Newtonian fluid with uniformly dispersed solid-liquid phases through a binder, and the viscosity of the non-Newtonian fluid is determined by the properties of the binder, so that the problem of unstable viscosity of the slurry needs to be solved by the binder.
The common water-based binder such as polytetrafluoroethylene binder, polypropylene-based binder and the like is a dispersion-type binder, and the strong hydrophobic groups and the high specific surface area on the surface of CFx have a certain adsorption effect on the dispersant in the CFx, so that the slurry shows a phenomenon that the viscosity of the slurry is increased after the binder is added, and emulsion breaking is caused when the dispersant adsorbed by CFx exceeds the minimum dispersant amount capable of keeping the slurry stable, so that the slurry cannot be coated.
Disclosure of Invention
The invention aims to provide high-stability fluorinated carbon-based slurry and a preparation method thereof, and effectively solve the problem that the slurry cannot be coated due to large viscosity change, sometimes even demulsification, fiberization, loss of viscoelasticity and fluidity and the like caused by the fact that the slurry is fiberized in the process of homogenizing the fluorinated carbon anode slurry, particularly after a binder is added.
In order to solve the technical problems, the invention adopts the technical scheme that: a high stability fluorinated carbohydrate slurry comprising: the conductive coating comprises active substances, a conductive agent, a binder, a thickening agent and a dispersing agent, wherein the mass ratio of the active substances to the binder is as follows: conductive agent: adhesive: thickening agent: the dispersant comprises (80-98), (12-0.5), (8-1), (4-0.2), (1-0.3); wherein the dispersing agent is one or more of ammonium perfluorooctanoate, nonylphenol polyoxyethylene ether and polyethylene glycol p-isooctyl phenyl ether.
Preferably, the active substance is CFx, wherein x is more than or equal to 0.8 and less than or equal to 1.0; the conductive agent is one or more of acetylene black, Super P, vapor-phase growth carbon fiber and carbon nano tube; the binder is one or two of polytetrafluoroethylene emulsion and acrylic copolymer emulsion; the thickening agent is sodium carboxymethyl cellulose.
Preferably, the solvent of the carbon fluoride water-based slurry is water, and the solid content of the carbon fluoride water-based slurry is 30-60 wt%.
A preparation method of high-stability fluorinated carbohydrate slurry is characterized by comprising the following steps:
mixing the active material, the conductive agent and the thickener in a mixer to form a solid slurry;
adding a solvent and the dispersing agent into the solid slurry, stirring until no obvious solid powder exists to obtain dispersed slurry, and continuously mixing in the mixer;
and adding the binder into the mixed dispersion slurry, and continuously mixing in the mixer to finally obtain the fluorinated carbohydrate slurry.
Preferably, the mixer is a double planetary power mixer
Preferably, the solvent is water, and the solid content in the carbon fluoride water-based slurry is 30-60 wt%.
Preferably, the active material, the conductive agent and the thickener are mixed in the double planetary power mixer for 30 to 60 minutes at a stirring shaft speed of 30 to 70 revolutions per minute and a dispersion shaft speed of 1000 to 3000 revolutions per minute.
Preferably, after the dispersed slurry is obtained, continuously mixing for 5-8 hours in the double-planetary power mixer at a stirring shaft speed of 30-70 rpm and a dispersing shaft speed of 1000-3000 rpm, wherein the temperature is controlled to be 20-55 ℃ during mixing.
Preferably, the binder is added into the mixed dispersed slurry, the mixture is continuously mixed in the double-planetary power mixer for 30-60 minutes only by a stirring shaft at 30-70 revolutions per minute, and the temperature is controlled to be 20-25 ℃ during mixing.
In the prior art, it is found that in the homogenization process of the carbon fluoride anode slurry, particularly after the binder is added, the strong hydrophobic groups and the high specific surface area on the surface of CFx have a certain adsorption effect on the dispersant in the slurry, so that the slurry shows a phenomenon of viscosity increase after the binder is added, sometimes even a demulsification phenomenon occurs, and the demulsification phenomenon can lead the slurry to be fiberized, lose viscoelasticity and fluidity and cause coating failure. The method is simple and easy to operate, convenient and quick, is suitable for large-scale production, and greatly improves the stability of the carbon fluoride water-based slurry.
Drawings
FIG. 1 is a graph showing the viscosity change at constant shear rate of a slurry without dispersant in a high stability fluorinated carbohydrate slurry according to a comparative example of the present invention
FIG. 2 is a graph showing the viscosity change of a slurry of a high-stability fluorinated carbohydrate system according to an embodiment of the present invention when added to a slurry of a dispersant at a constant shear rate
FIG. 3 is a battery discharge curve of a high stability fluorinated carbohydrate slurry with dispersant added according to an embodiment of the present invention
Detailed Description
The invention is further illustrated by the following examples and figures:
a high stability fluorinated carbohydrate slurry comprising: the conductive coating comprises active substances, a conductive agent, a binder, a thickening agent and a dispersing agent, wherein the mass ratio of the active substances to the binder is as follows: conductive agent: adhesive: thickening agent: the dispersant comprises (80-98), (12-0.5), (8-1), (4-0.2) and (1-0.3).
Wherein the dispersing agent is one or more of ammonium perfluorooctanoate, nonylphenol polyoxyethylene ether and polyethylene glycol p-isooctyl phenyl ether; the active substance is CFx, wherein x is more than or equal to 0.8 and less than or equal to 1.2; the conductive agent is one or more of acetylene black, Super P, vapor-phase growth carbon fiber and carbon nano tube; the binder is one or two of polytetrafluoroethylene emulsion and acrylic copolymer emulsion; the thickener is sodium carboxymethyl cellulose.
The addition of the dispersing agent ensures that the viscosity of the fluorinated carbon water-based slurry is not too high, has certain viscoelasticity and fluidity, and improves the stability of the fluorinated carbon water-based slurry. The method solves the problems that the strong hydrophobic groups and the high specific surface area on the CFx surface have certain adsorption effect on the dispersing agent, so that the slurry shows the phenomenon of viscosity rise after the addition of the binder, sometimes even has the demulsification phenomenon, and the occurrence of the demulsification phenomenon can lead the slurry to be fiberized, lose viscoelasticity and fluidity and cause coating failure.
Example 1:
the dispersing agent such as ammonium perfluorooctanoate, nonylphenol polyoxyethylene ether and polyethylene glycol p-isooctylphenyl ether is commonly used as a dispersing agent of a water-based adhesive, can be added and applied to a battery pole piece and is generally used for improving the dispersibility of the adhesive to water and keeping the emulsion characteristic of the adhesive. In the carbon fluoride slurry, the stability of the emulsion cannot be maintained due to the adsorption characteristic of the carbon fluoride material, so the invention adopts a method of adding an external dispersant to supplement the dispersant adsorbed by the carbon fluoride and improve the stability of the slurry.
The formulation of the carbon fluoride slurry used in this example is shown in the following table:
table 1 example 1 slurry proportioning table
Figure BDA0002993797200000041
The flow of the homogenizing process is as follows:
1. weighing 9.2kg of carbon fluoride, 0.4kg of Super P and 0.2kg of CMC, putting into a double-planetary power mixer, mixing for 60 minutes by a stirring shaft at a low speed of 60 revolutions per minute and by a dispersion shaft at a high speed of 2000 revolutions per minute to form solid slurry;
2. adding solvent water, adding 0.05kg of dispersing agent, and stirring until no obvious dry powder exists in the slurry to obtain dispersed slurry;
3. the stirring shaft adopts low-speed stirring for 60 revolutions per minute, the dispersion shaft adopts high-speed dispersion for 3000 revolutions per minute and is mixed for 5 hours, and the temperature is controlled to be 45 ℃;
4. adding 0.2kg of solid adhesive PTFE, stirring at 10 rpm for 30 min at 20 ℃ to obtain the high-stability fluorinated carbohydrate slurry.
Example 1 slurry constant shear rate (10 s) was tested using a rheometer-1) The result of the viscosity curve is shown in fig. 2, when the dispersant is added, the stability of the slurry is good, and after 24 hours of standing, the viscosity is only increased by 6.7%, and the stability of the slurry is greatly improved.
Meanwhile, the slurry of the dispersant in example 1 is tested to manufacture a D-type battery, and the discharge curve of the D-type battery is shown in fig. 3, and it can be seen from the graph that the added dispersant has good chemical stability, and although the dispersant still exists in the positive pole piece after being dried, the discharge performance is not affected.
Comparative example 1:
the formulation of the carbon fluoride slurry used in this comparative example is shown in the following table:
TABLE 2 slurry proportioning table for comparative example 1
Figure BDA0002993797200000051
The flow of the homogenizing process is as follows:
1. weighing 9.2kg of carbon fluoride, 0.4kg of Super P and 0.2kg of CMC, putting into a double-planetary power mixer, mixing for 60 minutes at a low speed of a stirring shaft of 60 revolutions per minute and a high speed of a dispersion shaft of 2000 revolutions per minute to form solid slurry;
2. adding solvent water, and then stirring until no obvious dry powder exists in the slurry to obtain dispersed slurry;
3. stirring with stirring shaft at low speed for 60 r/min, dispersing with dispersing shaft at high speed for 3000 r/min for 5 hr, and controlling temperature at 45 deg.C;
4. adding 0.2kg of solid adhesive PTFE, stirring at 10 rpm for 30 minutes at 20 ℃ to obtain the fluorinated carbohydrate slurry.
Comparative example 1 slurry constant shear rate (10 s) was tested using a rheometer-1) The viscosity curve is shown in figure 1, and the viscosity of the slurry of comparative example 1 without the dispersant is slowly increased and the emulsion is broken after 20 min.
The viscosity stability of the two slurries of example 1 and comparative example 1 was tested by a viscometer before and after standing for 24 h. The specific results are shown in Table 3.
TABLE 3 test results
Figure BDA0002993797200000052
From the experimental results, the viscosity of the slurry of comparative example 1 without the dispersant is increased by 2.6 times after the slurry is left standing for 24 hours; in example 1, after the dispersant is added, the stability of the slurry is good, the viscosity is only increased by 6.7% after 24 hours of standing, and the stability of the slurry is greatly improved.
The examples and comparative examples of the present invention have been described in detail, but the description is only for the preferred examples of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims (10)

1. A high stability fluorinated carbohydrate slurry comprising: the conductive coating comprises active substances, a conductive agent, a binder, a thickening agent and a dispersing agent, wherein the mass ratio of the active substances to the binder is as follows: conductive agent: adhesive: thickening agent: the dispersant comprises (80-98), (12-0.5), (8-1), (4-0.2), (1-0.3); wherein the dispersing agent is one or more of ammonium perfluorooctanoate, nonylphenol polyoxyethylene ether and polyethylene glycol p-isooctyl phenyl ether.
2. The high stability fluorinated carbohydrate slurry of claim 1, wherein: the active substance is CFx, wherein x is more than or equal to 0.8 and less than or equal to 1.0; the conductive agent is one or more of acetylene black, Super P, vapor-phase growth carbon fiber and carbon nano tube; the binder is one or two of polytetrafluoroethylene emulsion and acrylic copolymer emulsion; the thickening agent is sodium carboxymethyl cellulose.
3. A high stability fluorinated carbohydrate slurry according to claim 1 or 2, characterized in that: the solvent of the fluorinated carbon water-based slurry is water, and the solid content of the fluorinated carbon water-based slurry is 30-60 wt%.
4. A method for preparing the highly stable aqueous slurry of fluorocarbon according to claim 1, characterized by:
mixing the active material, the conductive agent and the thickener in a mixer to form a solid slurry;
adding a solvent and the dispersing agent into the solid slurry, stirring until no obvious solid powder exists to obtain dispersed slurry, and continuously mixing in the mixer;
and adding the binder into the mixed dispersion slurry, and continuously mixing in the mixer to finally obtain the fluorinated carbohydrate slurry.
5. The method for preparing a high stability fluorinated carbohydrate based slurry according to claim 4, wherein: the mixer is a double planetary power mixer.
6. The method for preparing a high stability fluorinated carbohydrate-based slurry according to claim 5, wherein: the solvent is water, and the solid content in the carbon fluoride water-based slurry is 30-60 wt%.
7. The method for preparing a high stability fluorinated carbohydrate-based slurry according to claim 5, wherein: the active substance, the conductive agent and the thickening agent are mixed in the double-planetary power mixer for 30-60 minutes at a stirring shaft speed of 30-70 revolutions per minute and a dispersion shaft speed of 1000-3000 revolutions per minute.
8. The method for preparing a high stability fluorinated carbohydrate slurry according to claim 5, 6 or 7, wherein: and after the dispersed slurry is obtained, continuously mixing for 5-8 hours in the double-planetary power mixer at a stirring shaft speed of 30-70 rpm and a dispersing shaft speed of 1000-3000 rpm, wherein the temperature is controlled to be 20-55 ℃ during mixing.
9. The method for preparing a high stability fluorinated carbohydrate slurry according to claim 5, 6 or 7, wherein: adding the binder into the mixed dispersed slurry, and continuously mixing the slurry in the double-planetary power mixer for 30-60 minutes only by using a stirring shaft at 30-70 revolutions per minute, wherein the temperature is controlled to be 20-25 ℃ during mixing.
10. The method for preparing a high stability fluorinated carbohydrate-based slurry according to claim 8, wherein: adding the binder into the mixed dispersed slurry, and continuously mixing the slurry in the double-planetary power mixer for 30-60 minutes only by using a stirring shaft at 30-70 revolutions per minute, wherein the temperature is controlled to be 20-25 ℃ during mixing.
CN202110323811.5A 2021-03-26 2021-03-26 High-stability fluorinated carbohydrate slurry and preparation method thereof Pending CN113097457A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110323811.5A CN113097457A (en) 2021-03-26 2021-03-26 High-stability fluorinated carbohydrate slurry and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110323811.5A CN113097457A (en) 2021-03-26 2021-03-26 High-stability fluorinated carbohydrate slurry and preparation method thereof

Publications (1)

Publication Number Publication Date
CN113097457A true CN113097457A (en) 2021-07-09

Family

ID=76669857

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110323811.5A Pending CN113097457A (en) 2021-03-26 2021-03-26 High-stability fluorinated carbohydrate slurry and preparation method thereof

Country Status (1)

Country Link
CN (1) CN113097457A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115275199A (en) * 2022-08-01 2022-11-01 深圳市皓飞实业有限公司 Dispersing auxiliary agent for lithium ion battery slurry and application thereof

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11343317A (en) * 1998-05-29 1999-12-14 Asahi Glass Furoro Polymers Kk Dispersion containing tetrafluoroethylene copolymer particle and its production
CA2376895A1 (en) * 2001-03-15 2002-09-15 Wilson Greatbatch Ltd. Process for fabricating continuously coated electrodes on a porous current collector and cell designs incorporating said electrodes
CN1395510A (en) * 2000-01-24 2003-02-05 大金工业株式会社 Method for coating substrate, coated article and coating apparatus
CN103594687A (en) * 2013-11-29 2014-02-19 贵州梅岭电源有限公司 Preparation method of lithium fluorocarbon cell positive electrode
CN104466107A (en) * 2014-12-03 2015-03-25 湘潭大学 Carbon fluoride composite positive electrode and preparation method thereof
CN104885260A (en) * 2013-01-17 2015-09-02 日本瑞翁株式会社 Method for manufacturing conductive adhesive composition for electrochemical element electrode
CN107235716A (en) * 2017-08-01 2017-10-10 郑州联冠科技有限公司 SMD ceramic base casting slurries
CN107492665A (en) * 2017-08-10 2017-12-19 重庆鲁岳新能源科技有限公司 A kind of novel graphite alkene positive electrode piece of lithium-ion power battery and preparation method thereof
CN108565412A (en) * 2018-03-21 2018-09-21 天津力神电池股份有限公司 A kind of fluorocarbons blended anode pole piece and preparation method thereof
CN109546105A (en) * 2018-10-31 2019-03-29 贵州梅岭电源有限公司 A kind of power-type lithium fluorocarbon battery and its manufacturing method
CN109962240A (en) * 2017-12-25 2019-07-02 中国电子科技集团公司第十八研究所 Method for preparing anode slurry for lithium carbon fluoride battery with carbon nanotube as conductive agent
CN110364736A (en) * 2019-07-12 2019-10-22 大连恒超锂业科技有限公司 A kind of cathode of lithium battery slurry and preparation method thereof
CN110797536A (en) * 2019-10-24 2020-02-14 桑顿新能源科技(长沙)有限公司 Lithium ion battery anode slurry and preparation method thereof and lithium ion battery
CN111509221A (en) * 2020-04-24 2020-08-07 惠州亿纬锂能股份有限公司 Multiplying power type water system positive electrode slurry, preparation method thereof, obtained pole piece and battery, and application of battery

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11343317A (en) * 1998-05-29 1999-12-14 Asahi Glass Furoro Polymers Kk Dispersion containing tetrafluoroethylene copolymer particle and its production
CN1395510A (en) * 2000-01-24 2003-02-05 大金工业株式会社 Method for coating substrate, coated article and coating apparatus
CA2376895A1 (en) * 2001-03-15 2002-09-15 Wilson Greatbatch Ltd. Process for fabricating continuously coated electrodes on a porous current collector and cell designs incorporating said electrodes
CN104885260A (en) * 2013-01-17 2015-09-02 日本瑞翁株式会社 Method for manufacturing conductive adhesive composition for electrochemical element electrode
CN103594687A (en) * 2013-11-29 2014-02-19 贵州梅岭电源有限公司 Preparation method of lithium fluorocarbon cell positive electrode
CN104466107A (en) * 2014-12-03 2015-03-25 湘潭大学 Carbon fluoride composite positive electrode and preparation method thereof
CN107235716A (en) * 2017-08-01 2017-10-10 郑州联冠科技有限公司 SMD ceramic base casting slurries
CN107492665A (en) * 2017-08-10 2017-12-19 重庆鲁岳新能源科技有限公司 A kind of novel graphite alkene positive electrode piece of lithium-ion power battery and preparation method thereof
CN109962240A (en) * 2017-12-25 2019-07-02 中国电子科技集团公司第十八研究所 Method for preparing anode slurry for lithium carbon fluoride battery with carbon nanotube as conductive agent
CN108565412A (en) * 2018-03-21 2018-09-21 天津力神电池股份有限公司 A kind of fluorocarbons blended anode pole piece and preparation method thereof
CN109546105A (en) * 2018-10-31 2019-03-29 贵州梅岭电源有限公司 A kind of power-type lithium fluorocarbon battery and its manufacturing method
CN110364736A (en) * 2019-07-12 2019-10-22 大连恒超锂业科技有限公司 A kind of cathode of lithium battery slurry and preparation method thereof
CN110797536A (en) * 2019-10-24 2020-02-14 桑顿新能源科技(长沙)有限公司 Lithium ion battery anode slurry and preparation method thereof and lithium ion battery
CN111509221A (en) * 2020-04-24 2020-08-07 惠州亿纬锂能股份有限公司 Multiplying power type water system positive electrode slurry, preparation method thereof, obtained pole piece and battery, and application of battery

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115275199A (en) * 2022-08-01 2022-11-01 深圳市皓飞实业有限公司 Dispersing auxiliary agent for lithium ion battery slurry and application thereof

Similar Documents

Publication Publication Date Title
WO2017031885A1 (en) Preparation method for lithium battery negative-electrode slurry
CN110600671B (en) Semi-dry method batching process of lithium ion battery electrode slurry, lithium ion battery positive plate, battery negative plate and lithium ion battery
CN107403914B (en) Dry mixing process of artificial graphite cathode slurry
KR102519907B1 (en) High-viscosity lithium carboxymethyl cellulose and preparation method therefor and application thereof
CN102790218A (en) Preparation process for cathode paste of lithium-ion battery
CN111825804A (en) Copolymer latex for lithium ion secondary battery cathode, preparation method and application
CN111370672A (en) Preparation method of negative electrode slurry
CN106299250B (en) Preparation method of electrode slurry
CN111697225A (en) Lithium iron phosphate anode slurry for lithium ion battery, preparation method of lithium iron phosphate anode slurry and anode plate
CN111599985A (en) Lithium ion battery slurry, preparation method thereof and lithium ion battery
CN105047858A (en) Preparation method for lithium cobalt oxide cathode slurry
WO2017032155A1 (en) Preparation method for lithium battery lithium titanate negative electrode slurry
CN105161709A (en) Preparation method of lithium manganate cathode slurry
CN107732150A (en) Negative electrode of lithium ion battery and preparation method thereof and lithium ion battery
CN110993914B (en) Nickel-hydrogen battery cathode slurry and preparation method thereof
CN112687835A (en) Preparation method of negative electrode slurry
CN112635724A (en) Lithium ion battery cathode slurry prepared from high-substitution-degree thickening agent and preparation method of lithium ion battery cathode slurry
CN113097457A (en) High-stability fluorinated carbohydrate slurry and preparation method thereof
CN112086614B (en) Lithium battery cathode batching process
CN110707318A (en) Preparation method of lithium titanate battery negative electrode slurry
CN112838261A (en) Negative electrode slurry and homogenizing method and application thereof
CN108899469A (en) A kind of lithium ion battery negative material slurry and preparation method thereof
CN112072064A (en) Method for improving stability and dispersibility of lithium ion battery cathode slurry
CN114220970A (en) Lithium ion battery anode slurry and preparation method thereof
CN115954458A (en) Silicon-carbon cathode slurry and preparation method and application thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20210709