CN115141376B - Dispersing agent for lithium ion battery anode slurry and application thereof - Google Patents

Dispersing agent for lithium ion battery anode slurry and application thereof Download PDF

Info

Publication number
CN115141376B
CN115141376B CN202210915801.5A CN202210915801A CN115141376B CN 115141376 B CN115141376 B CN 115141376B CN 202210915801 A CN202210915801 A CN 202210915801A CN 115141376 B CN115141376 B CN 115141376B
Authority
CN
China
Prior art keywords
positive electrode
slurry
dispersant
dispersing agent
lithium ion
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.)
Active
Application number
CN202210915801.5A
Other languages
Chinese (zh)
Other versions
CN115141376A (en
Inventor
侯玲玲
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.)
Shenzhen Haofei New Material Co ltd
Shenzhen Haofei Industrial Co ltd
Original Assignee
Shenzhen Haofei New Material Co ltd
Shenzhen Haofei Industrial Co ltd
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 Shenzhen Haofei New Material Co ltd, Shenzhen Haofei Industrial Co ltd filed Critical Shenzhen Haofei New Material Co ltd
Priority to CN202210915801.5A priority Critical patent/CN115141376B/en
Publication of CN115141376A publication Critical patent/CN115141376A/en
Application granted granted Critical
Publication of CN115141376B publication Critical patent/CN115141376B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G81/00—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block 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
    • 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
    • H01M4/04—Processes of manufacture in general
    • H01M4/0402—Methods of deposition of the material
    • H01M4/0404—Methods of deposition of the material by coating on electrode collectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • 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
    • H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
    • H01M2004/028—Positive electrodes
    • 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 dispersing agent for lithium ion battery anode slurry, which has the following structural formula: RO (C) 2 H 4 O) m (C 3 H 6 O) n CH 2 CH 2 COOM wherein R represents a C2-C18 alkyl group and M represents H, NH 4 + Or an organic ammonium group, n is 1 to 50, and m is 1 to 50. The dispersing agent is specially designed according to the characteristics of the positive electrode slurry of the lithium battery, and can reduce the risk of secondary aggregation of solid particles in the positive electrode slurry on the premise of ensuring that the conductivity of the lithium battery is not affected, improve the fluidity of the positive electrode slurry, further reduce the resistance of a pole piece, improve the gram capacity of the battery and reduce the alternating current internal resistance of the battery.

Description

Dispersing agent for lithium ion battery anode slurry and application thereof
Technical Field
The invention relates to a dispersing agent for lithium ion battery anode slurry, in particular to an ionic dispersing agent, and belongs to the technical field of lithium batteries.
Background
The lithium ion battery has the advantages of large specific energy, long cycle life, low self-discharge rate, no memory effect, environmental friendliness and the like, and has wide application in the fields of aviation, national defense, automobiles, 3C and the like.
A lithium ion battery is a rechargeable battery that operates primarily by virtue of movement of lithium ions between a positive electrode and a negative electrode. During charge and discharge, li + To-and-fro intercalation and deintercalation between two electrodes, li during charging + The positive electrode is de-intercalated, the negative electrode is intercalated by the electrolyte, the negative electrode is in a lithium-rich state, and the negative electrode is in the opposite direction during discharge.
The lithium ion battery consists of a positive electrode, a negative electrode, a diaphragm and electrolyte, and when the lithium ion battery is formed, the prepared slurry is required to be coated on an aluminum foil to prepare the positive electrode and the negative electrode respectively, so that the viscosity of the slurry is directly related to the coating quality, the current requirements on the capacity of the lithium ion battery are higher and higher, and the common solution is to increase the proportion of electrode active substances in the slurry, so that the solid content of the slurry is too high, the viscosity and the fluidity are poor, the coating effect of the electrode is influenced, and the efficiency of the preparation process of the lithium ion battery is further influenced.
In view of the above problems, the current solution in the industry is to add a dispersant to the slurry to improve the dispersion effect of the slurry, and the existing dispersants include polyvinylpyrrolidone, phosphite, triton-X and the like, which can solve the fluidity problem of the slurry to a certain extent, but the functions of the slurry on the problems of viscosity, gel and the like are still not strong enough, and in addition, the safety of the dispersants is not high.
Disclosure of Invention
Aiming at the problems of poor viscosity and fluidity of slurry for lithium ion batteries, and influence on electrode coating effect, further increase of electrode sheet resistance and reduction of gram capacity, the invention provides a dispersing agent for positive electrode slurry of lithium ion batteries and application thereof.
The technical scheme for solving the technical problems is as follows:
a dispersing agent for positive electrode slurry of a lithium ion battery has the following structural formula: RO (C) 2 H 4 O) m (C 3 H 6 O) n CH 2 CH 2 COOM wherein R represents a C2-C18 alkyl group and M represents H, NH 4 + Or an organic ammonium group, n is 1 to 50, and m is 1 to 50.
Preferably, R represents a C4-C16 alkyl group, more preferably a C6-C12 alkyl group, most preferably a C8-C10 alkyl group.
Preferably, the organic ammonium group is cetyl trimethylammonium group, tetraethylammonium group or tetrabutylammonium group.
Preferably, n is 10 to 40 and m is 10 to 40; further preferably, n is 10 to 25 and m is 10 to 25.
The alkyl groups described in the present invention may be linear or branched, and may be, for example, C2 alkyl-ethyl; c3 alkyl-propyl, such as n-propyl or isopropyl; c4 alkyl-butyl such as n-butyl, isobutyl, tert-butyl or 2-butyl; c5 alkyl-pentyl, such as n-pentyl, isopentyl or neopentyl; c6 alkyl-hexyl, such as n-hexyl, isohexyl and 1, 3-dimethylbutyl.
The dispersing agent is prepared by polymerizing polypropylene glycol, polyethylene glycol and alcohol corresponding to R to form a precursor, and then performing condensation reaction on terminal alcohol hydroxyl of the precursor and 1-hydroxy ammonium propionate, wherein the dispersing agent can be obtained by referring to the following reaction process:
ROH+HO-(CH 2 CH 2 O) m -H→RO-(CH 2 CH 2 O) m -H (1)
OH-(CH 2 CH 2 CH 2 O) n -H+CH 2 OHCH 2 COOM→OH-(CH 2 CH 2 CH 2 O) n -CH 2 CH 2 COOM (2)
RO-(CH 2 CH 2 O) n -H+OH-(CH 2 CH 2 CH 2 O) n -CH 2 CH 2 COOM→RO-(CH 2 CH 2 O) n (CH 2 CH 2 CH 2 O) m -CH 2 CH 2 COOM (3)
(1) Under the catalysis of concentrated sulfuric acid, polyethylene glycol and ROH are subjected to condensation dehydration reaction under the stirring condition of 30-35 ℃ in the presence of an organic solvent, and the molar ratio of the polyethylene glycol to the ROH is (0.6-0.8): 1, generating polyethylene glycol monoethers;
(2) The polypropylene glycol and the 1-hydroxy ammonium propionate are subjected to condensation dehydration reaction under the condition of stirring at 25-30 ℃ in the presence of an organic solvent under the catalysis of concentrated sulfuric acid, and the molar ratio of the polypropylene glycol to the 1-hydroxy ammonium propionate is 1: (1.1-1.2) to produce hydroxyl-terminated polypropylene glycol ammonium propionate;
(3) Stirring and reacting hydroxyl-terminated polypropylene glycol ammonium propionate and polyethylene glycol monoether in a dry container with tetrahydrofuran as solvent in the presence of concentrated sulfuric acid at 35-40deg.C for 12-24 hr in inert atmosphere to obtain RO- (CH) at a molar ratio of 1:1 2 CH 2 O) n (CH 2 CH 2 CH 2 O) m -CH 2 CH 2 COOM is obtained through a further hydrolysis reaction when M represents H.
The action principle of the dispersing agent for the lithium ion battery anode slurry claimed by the invention is as follows:
the hydrophilic group and the lipophilic group can effectively reduce the surface tension of a solid-liquid interface from a microscopic interface, improve the wetting permeability, improve the solid content and the coating convenience of electrode active substances, and are favorable for uniform dispersion of particles such as electrode active substances, conductive carbon and the like, thereby improving the performance of a battery.
The dispersant provided by the invention has the beneficial effects that:
(1) The dispersing agent is specially designed according to the characteristics of the positive electrode slurry of the lithium battery, and can reduce the risk of secondary aggregation of solid particles in the positive electrode slurry on the premise of ensuring that the conductivity of the lithium battery is not affected, improve the fluidity of the positive electrode slurry, further reduce the resistance of a pole piece, improve the gram capacity of the battery and reduce the alternating current internal resistance of the battery;
(2) The dispersing agent is convenient to use, does not need to be matched with a special pulping process, and can achieve the dispersing and viscosity reducing effects of the slurry by adding the dispersing agent according to a proportion on the basis of the original pulping process, and the process cost is not required to be increased additionally.
The invention also discloses a lithium ion battery anode slurry which comprises the dispersing agent.
Preferably, the positive electrode slurry further contains a positive electrode active material and a conductive agent.
Preferably, the positive electrode active material is one or more of lithium cobaltate, lithium iron phosphate, nickel cobalt manganese ternary material and nickel cobalt lithium aluminate ternary material; the conductive agent is one or two of carbon black and carbon nano tube.
Preferably, the positive electrode slurry further comprises a binder and an organic solvent, wherein the binder is polyvinylidene fluoride, and the organic solvent is N-methylpyrrolidone.
The invention also discloses a positive pole piece of the lithium ion battery, and the surface of the positive pole piece is coated with the positive pole slurry of the lithium ion battery.
The invention also discloses a lithium ion battery, which comprises the positive electrode plate.
Detailed Description
The principles and features of the present invention are described below in connection with examples, which are set forth only to illustrate the present invention and not to limit the scope of the invention.
The structural formula of the dispersing aid used in the examples is presented below:
example 1: effect in wet pulping process
The specific preparation steps of the lithium battery positive electrode slurries of the experimental groups 1-5 and the control group 1 are as follows:
1) Mixing and stirring the binder and the organic solvent uniformly to obtain a glue solution A;
2) Respectively adding the dispersing agents A-F into the glue solution A and uniformly stirring to obtain a glue solution B;
3) Adding a conductive agent into the glue solution B to obtain conductive agent slurry;
4) And adding the positive electrode active material into the conductive agent slurry to obtain positive electrode slurry.
The weight ratio of the raw materials in the method is as follows: conductive agent: dispersing agent: binder = 92:4:3:1; the positive electrode active material is lithium iron phosphate produced by Hunan Yu energy-saving new energy battery material Co, the conductive agent is formed by mixing conductive carbon black and carbon nano tubes according to a mass ratio of 1:1, the binder is polyvinylidene fluoride, the organic solvent is N-methyl pyrrolidone, and the dispersing agents used in examples 1-5 are a dispersing agent A, a dispersing agent B, a dispersing agent C, a dispersing agent D and a dispersing agent E respectively.
The control group 1 was not added with dispersant, and the other components of the slurry were the same as those of the experimental groups 1 to 5.
And respectively taking the freshly prepared slurry for testing, standing the slurry after 24 hours, stirring the slurry for 1 minute, testing, using a force ND-10 rotary viscometer, using a No. 2 rotor, inserting the rotor into the slurry to be tested, testing the rotating speed at 100rpm for 60 seconds, and obtaining the viscosity value of the slurry by using a multipoint average value taking mode, wherein the testing result is shown in Table 1.
Table 1 slurry viscosities and solids contents of experimental groups 1-5 and control group 1
As can be seen from the data in Table 1, after the dispersants of the present invention are added in the experimental groups 1 to 5, the solid content of the freshly prepared slurry is improved by 3 to 5% compared with that of the control group 1, the slurry of the control group 1 is gelled after 24 hours, and the slurries of the experimental groups 1 to 5 are still good in fluidity, which indicates that the dispersants of the present invention have good dispersing effect on the positive electrode slurry obtained by the wet pulping process.
Example 2: effect in dry pulping process
The specific preparation process of the lithium battery positive electrode slurries of the experimental groups 6-10 and the control group 2 is as follows:
1) Dry-mixing the binder, the conductive agent and the positive electrode active material to obtain uniformly mixed powder;
2) Adding part of organic solvent into the powder, and uniformly stirring to obtain initial slurry A;
3) Adding the dispersing agent into the initial slurry A, and uniformly stirring;
4) And on the basis of the step 3), adding the rest organic solvent, and uniformly stirring to obtain the positive electrode slurry.
Wherein, the weight ratio of each raw material is that the positive electrode active material: conductive agent: dispersing agent: binder=94:3.5:1.5:1; the positive electrode active material is lithium cobaltate, the conductive agent is formed by mixing conductive carbon black and carbon nano tubes according to the mass ratio of 1:1, the binder is polyvinylidene fluoride, the organic solvent is N-methyl pyrrolidone, and the dispersing agents used in examples 6-10 are a dispersing agent A, a dispersing agent B, a dispersing agent C, a dispersing agent D and a dispersing agent E respectively.
And respectively taking the freshly prepared slurry for testing, standing the slurry after 24 hours, stirring the slurry for 1 minute, testing, using a force ND-10 rotary viscometer, using a No. 2 rotor, inserting the rotor into the slurry to be tested, testing the rotating speed at 100rpm for 60 seconds, and obtaining the viscosity value of the slurry by using a multipoint average value taking mode, wherein the testing result is shown in Table 2.
Table 2 slurry viscosities and solids contents of experimental groups 6-10 and control group 2
As can be seen from the data in Table 2, after the dispersion aid of the present invention was added to the positive electrode slurries of the experimental groups 6 to 10, the solid content of the freshly prepared slurries was increased by 4 to 7% as compared with the comparative group 2, the initial viscosity was slightly increased, the slurries of the comparative group 2 were gelled after 24 hours, and the slurries of the experimental groups 6 to 10 were still excellent in fluidity, indicating that the dispersant of the present invention also has excellent dispersion effect on the positive electrode slurries obtained by the dry method.
Example 3: comparative experiment Effect with existing dispersant
The preparation methods of the lithium battery positive electrode slurries of the experimental groups 11-12 and the control groups 3-5 are as follows:
1) Mixing and stirring the binder and the organic solvent uniformly to obtain a glue solution A;
2) Adding a dispersing agent into the glue solution A and uniformly stirring to obtain a glue solution B;
3) Adding a conductive agent into the glue solution B to obtain conductive agent slurry;
4) And adding the positive electrode active material into the conductive agent slurry to obtain positive electrode slurry.
Wherein, the weight ratio of each raw material is that the positive electrode active material: conductive agent: dispersing agent: binder = 93:3:3:1; the positive electrode active material is lithium iron phosphate produced by Hunan Yu energy new energy battery material Co-Ltd, the conductive agent is formed by mixing conductive carbon black and carbon nano tubes according to the mass ratio of 1:1, the binder is polyvinylidene fluoride, the organic solvent is N-methyl pyrrolidone, the dispersing agents of the experiment groups 11 and 12 are respectively dispersing agent A and dispersing agent D, the dispersing agent of the comparison group 3 is polyvinylpyrrolidone, the dispersing agent of the comparison group 4 is triethyl phosphite, and the dispersing agent of the comparison group 5 is triton X.
And respectively taking the freshly prepared slurry for testing, stirring the slurry after standing for 24 hours for 1min, testing, using a force ND-10 rotary viscometer, using a No. 2 rotor, inserting the rotor into the slurry to be tested, testing the rotating speed at 100rpm for 60s, and obtaining the viscosity value of the slurry by using a multipoint average method, wherein the testing result is shown in Table 3.
TABLE 3 slurry viscosities and solids contents of experimental groups 11-12 and control groups 3-5
As can be seen from the data in Table 3, the solid content of the obtained positive electrode slurry is relatively higher than that of other existing dispersants, and the viscosity of the slurry obtained after 24 hours of standing is obviously reduced, so that the effect of improving the fluidity of the slurry is remarkable.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims (13)

1. A dispersing agent for positive electrode slurry of a lithium ion battery has the following structural formula: RO (C) 2 H 4 O) m (C 3 H 6 O) n CH 2 CH 2 COOM wherein R represents a C2-C18 alkyl group and M represents H, NH 4 + Or organic ammonium group, n is 1-50, m is 1-50, and the positive electrode active substance in the positive electrode slurry is one or more of lithium cobaltate, lithium iron phosphate, nickel cobalt manganese ternary material and nickel cobalt lithium aluminate ternary material.
2. A dispersant as claimed in claim 1 wherein R represents a C4-C16 alkyl group.
3. A dispersant as claimed in claim 2 wherein R represents a C6-C12 alkyl group.
4. A dispersant as claimed in claim 3 wherein R represents a C8-C10 alkyl group.
5. The dispersant of any one of claims 1 to 4, wherein said organic ammonium group is cetyl trimethylammonium group, tetraethylammonium group or tetrabutylammonium group.
6. The dispersant of any one of claims 1 to 4, wherein n is 10 to 40 and m is 10 to 40.
7. The dispersant of claim 6 wherein n is 10 to 25 and m is 10 to 25.
8. The dispersant of claim 5 wherein n is 10 to 40 and m is 10 to 40.
9. The dispersant of claim 8 wherein n is 10 to 25 and m is 10 to 25.
10. A lithium ion battery positive electrode slurry comprising the dispersant of any one of claims 1 to 9, further comprising a positive electrode active material and a conductive agent.
11. The positive electrode slurry according to claim 10, wherein the conductive agent is one or both of carbon black and carbon nanotubes.
12. The positive electrode slurry according to any one of claims 10 to 11, further comprising a binder and an organic solvent, wherein the binder is polyvinylidene fluoride, and the organic solvent is N-methylpyrrolidone.
13. A positive electrode sheet of a lithium ion battery, characterized in that the surface of the positive electrode sheet is coated with the positive electrode slurry according to any one of claims 10 to 12.
CN202210915801.5A 2022-08-01 2022-08-01 Dispersing agent for lithium ion battery anode slurry and application thereof Active CN115141376B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210915801.5A CN115141376B (en) 2022-08-01 2022-08-01 Dispersing agent for lithium ion battery anode slurry and application thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210915801.5A CN115141376B (en) 2022-08-01 2022-08-01 Dispersing agent for lithium ion battery anode slurry and application thereof

Publications (2)

Publication Number Publication Date
CN115141376A CN115141376A (en) 2022-10-04
CN115141376B true CN115141376B (en) 2023-12-22

Family

ID=83414971

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210915801.5A Active CN115141376B (en) 2022-08-01 2022-08-01 Dispersing agent for lithium ion battery anode slurry and application thereof

Country Status (1)

Country Link
CN (1) CN115141376B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115975171B (en) * 2022-12-18 2023-06-20 安徽皓飞新材料有限公司 Polyether ester plasticizer and application thereof in field of lithium battery preparation

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001160395A (en) * 1999-12-03 2001-06-12 Mitsubishi Chemicals Corp Material for positive electrode of lithium secondary battery
CN102064326A (en) * 2010-12-16 2011-05-18 东莞新能源电子科技有限公司 Dispersing agent for positive and negative electrode materials of lithium ion battery
CN103208631A (en) * 2012-01-17 2013-07-17 万向电动汽车有限公司 Lithium battery positive electrode slurry and preparation method thereof
JP2017111869A (en) * 2015-12-14 2017-06-22 松本油脂製薬株式会社 Dispersant composition for secondary battery slurry, and utilization thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001160395A (en) * 1999-12-03 2001-06-12 Mitsubishi Chemicals Corp Material for positive electrode of lithium secondary battery
CN102064326A (en) * 2010-12-16 2011-05-18 东莞新能源电子科技有限公司 Dispersing agent for positive and negative electrode materials of lithium ion battery
CN103208631A (en) * 2012-01-17 2013-07-17 万向电动汽车有限公司 Lithium battery positive electrode slurry and preparation method thereof
JP2017111869A (en) * 2015-12-14 2017-06-22 松本油脂製薬株式会社 Dispersant composition for secondary battery slurry, and utilization thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
分散剂对石墨烯正极浆料的影响;郭进康等;有色金属科学与工程;第7卷(第6期);73-76 *

Also Published As

Publication number Publication date
CN115141376A (en) 2022-10-04

Similar Documents

Publication Publication Date Title
CN111825804B (en) Copolymer latex for lithium ion secondary battery cathode, preparation method and application
CN113113605B (en) Network structure ion conductive adhesive and preparation method and application thereof
CN111600064A (en) Fast-charging lithium ion battery with high energy density and long service life and preparation method thereof
CN110190284B (en) Water-based binder for lithium-sulfur battery positive electrode and preparation method and application thereof
CN109768278A (en) A kind of lithium ion battery
CN111261835A (en) Lithium iron phosphate positive plate and environment-friendly low-temperature-resistant lithium battery comprising same
CN110828779B (en) Lithium ion battery negative plate, preparation method thereof and lithium ion battery
CN115141376B (en) Dispersing agent for lithium ion battery anode slurry and application thereof
CN112687951B (en) Low-temperature-resistant high-voltage type soft package lithium ion battery and preparation method thereof
CN114094175A (en) Secondary battery
CN113745459A (en) Positive electrode slurry and preparation method and application thereof
CN111129501A (en) High-voltage-resistant conductive slurry for lithium ion battery, electrode plate prepared from conductive slurry and application of electrode plate
CN116230854A (en) Negative electrode plate of sodium ion battery, preparation method of negative electrode plate and sodium ion battery
CN113764673B (en) Electrode paste composition, method of preparing the same, electrode sheet coated with the same, and lithium ion battery including the electrode sheet
CN113248989B (en) Conductive coating slurry and preparation method and application thereof
CN112467222B (en) Button secondary battery
CN101794884A (en) Part of hydrolyzed polyacrylamide bonding agent used for forming negative electrode of lithium ion battery
CN114388791B (en) Composite slurry for lithium ion battery, preparation method and application thereof
CN114824168A (en) Lithium supplement agent and method for lithium ion battery anode, anode plate, lithium supplement slurry and battery
CN110484164B (en) Composite lithium ion battery cathode binder
CN113658743A (en) Carbon dot composite conductive agent and preparation method and application thereof
CN112290011A (en) Preparation method of water-based lithium ion battery positive active material slurry and positive plate
CN111916731A (en) Positive plate, preparation method thereof and lithium ion secondary battery comprising positive plate
CN115490866B (en) Dispersing agent for polycarboxylate lithium battery
CN115513465A (en) Dispersing agent for segmented polyether lithium battery anode slurry

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
GR01 Patent grant
GR01 Patent grant