CN109411693A - The dry powder pulping process of lithium ion battery - Google Patents
The dry powder pulping process of lithium ion battery Download PDFInfo
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- CN109411693A CN109411693A CN201710700023.7A CN201710700023A CN109411693A CN 109411693 A CN109411693 A CN 109411693A CN 201710700023 A CN201710700023 A CN 201710700023A CN 109411693 A CN109411693 A CN 109411693A
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- dry powder
- lithium ion
- ion battery
- pulping process
- revolution
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
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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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a kind of dry powder pulping process of lithium ion battery, amount of activated object, binder, conductive agent and remaining binder, active matter are sequentially added, and is stirred using revolution, autobiography mode, dry powder is obtained, and suitable solvent is added, is first stirred, solvent is added, viscosity is adjusted.By the above-mentioned means, the present invention can prepare the slurry of lithium ion battery, and easy to operate, it is high-efficient.
Description
Technical field
The present invention relates to technical field of lithium ion, more particularly, to a kind of dry powder pulping process of lithium ion battery.
Background technique
Currently, lithium battery gradually comes into the every field of our lives, and become indispensable role.This is because
Lithium battery be it is pollution-free, light-weight, energy storage is big, service life long green energy resource.With the market demand and competition, high efficiency, Gao Pin
Matter, low cost production have become the sole mode of lithium ion battery enterprise inside the circle existence, and manufacturing process is continued to optimize perfect
Become " the only way which must be passed " of manufacturing process.
Pulping process is important procedure in manufacturing process, it is mainly by active matter, and conductive agent, binder and solvent are mixed
It closes, is uniformly dispersed with reaching, stable effect, and traditional handicraft, complex for operation step, quality is unstable, low efficiency, causes to starch
Expect poor processability, manufacturing cycle is long.
Summary of the invention
The technical problems to be solved by the present invention are: a kind of dry powder pulping process of lithium ion battery is provided, operation letter
It is single, it is high-efficient, and the slurry quality of lithium ion battery can be promoted.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows: a kind of dry powder of lithium ion battery is provided
Pulping process includes at least following steps:
S1: the 20 ~ 50% of active matter total amount, the 25 ~ 50% of binder total amount is sequentially added in order in a mixing bowl, conduction
Agent, remaining binder, remaining active matter are stirred using revolution, rotation mode, until obtaining the heap buildup of no color differnece；
S2: being added the 30 ~ 85% of solvent total amount, stirs 15min using revolution, rotation mode, obtains siccative；
S3: being added remaining solvent, to adjust viscosity, and is stirred using revolution, rotation mode.
Wherein, it in step S1, is stirred 15 minutes using revolution, rotation mode, stops stirring, when the coloured difference of heap buildup,
Then continue stirring until executing step S2 after heap buildup no color differnece.
Wherein, in step S1, revolution frequency is 5Hz ~ 30Hz；Rotation frequency is 5Hz ~ 35Hz, and total mixing time is
60min ~ 150min, and controlled at 20 DEG C ~ 50 DEG C.
Wherein, in step S1, binder accounts for the 0.8% ~ 3.0% of dry powder total amount, conductive agent account for dry powder total amount 0.5% ~
3.0%.
Wherein, when needing to prepare anode sizing agent, then in step s 2, while the 30 ~ 85% of solvent total amount are added, add
Enter carbon nanotube, and stirred using revolution, rotation mode, and the frequency that revolves is 5Hz ~ 35Hz；Rotation frequency is 5Hz ~ 25Hz, and
Total mixing time is 60min ~ 150min, and controlled at 20 DEG C ~ 50 DEG C.
Wherein, in step S3, revolution frequency is 5Hz ~ 30Hz；Rotation frequency is 5Hz ~ 30Hz, and total mixing time is
10min ~ 60min, and controlled at 20 DEG C ~ 50 DEG C, vacuum degree is -0.80Mpa ~ (- 1Mpa).
Wherein, when needing to prepare negative electrode slurry, then after step S3, further include step S4: butylbenzene being added into dry powder
Rubber, and the butadiene-styrene rubber is the 1 ~ 5% of dry powder total amount, and is stirred using revolution, rotation mode.
Wherein, in step S4, revolution frequency is 5Hz ~ 25Hz, and rotation frequency is 5Hz ~ 20Hz, and total mixing time is 10min
~ 60min and controlled at 20 DEG C ~ 50 DEG C, vacuum degree is -0.80Mpa ~ (- 1Mpa).
Wherein, the active matter includes positive electrode active material and negative electrode active material；Wherein
Positive electrode active material is at least one of cobalt acid lithium, nickle cobalt lithium manganate, LiMn2O4 and LiFePO4.
Negative electrode active material is at least one of graphite, coke, fibrous carbon and carbon black.
Wherein, the solvent is at least one of deionized water, ring miscellany compound and ketone compounds；Wherein
One of which in the non-tetrahydrofuran of ring miscellany compound, N-Methyl pyrrolidone, pyridine and pyrroles；
Ketone compounds are the one of which in acetone, butanone and pentanone.
The beneficial effects of the present invention are: be different from the prior art, the present invention sequentially add amount of activated object, binder,
Conductive agent and remaining binder, active matter, and stirred using revolution, autobiography mode, dry powder is obtained, and be added suitable molten
Agent is first stirred, and solvent is added, and adjusts viscosity.By the above-mentioned means, the present invention can prepare the slurry of lithium ion battery, and grasp
Make simply, it is high-efficient.
Detailed description of the invention
Fig. 1 is the flow diagram of the dry powder pulping process of lithium ion battery of the present invention；
Fig. 2 is the layered structure schematic diagram of present invention substance each in a mixing bowl.
Specific embodiment
To explain the technical content, the achieved purpose and the effect of the present invention in detail, below in conjunction with embodiment and cooperate attached
Figure is explained.
Fig. 1 and Fig. 2 is please referred to, the present invention provides a kind of dry powder pulping process of lithium ion battery, includes at least such as
Lower step:
S1: the 20 ~ 50% of active matter total amount, the 25 ~ 50% of binder total amount is sequentially added in order in a mixing bowl, conduction
Agent, remaining binder, remaining active matter are stirred using revolution, rotation mode, until obtaining the heap buildup of no color differnece；
S2: being added the 30 ~ 85% of solvent total amount, stirs 15min using revolution, rotation mode, obtains siccative；
S3: being added remaining solvent, to adjust viscosity, and is stirred using revolution, rotation mode.
Wherein, it in step S1, is stirred 15 minutes using revolution, rotation mode, stops stirring, when the coloured difference of heap buildup,
Then continue stirring until executing step S2 after heap buildup no color differnece.
Wherein, in step S1, revolution frequency is 5Hz ~ 30Hz；Rotation frequency is 5Hz ~ 35Hz, and total mixing time is
60min ~ 150min, and controlled at 20 DEG C ~ 50 DEG C.
Wherein, in step S1, binder accounts for the 0.8% ~ 3.0% of dry powder total amount, conductive agent account for dry powder total amount 0.5% ~
3.0%.
Wherein, when needing to prepare anode sizing agent, then in step s 2, while the 30 ~ 85% of solvent total amount are added, add
Enter carbon nanotube, and stirred using revolution, rotation mode, and the frequency that revolves is 5Hz ~ 35Hz；Rotation frequency is 5Hz ~ 25Hz, and
Total mixing time is 60min ~ 150min, and controlled at 20 DEG C ~ 50 DEG C.
Wherein, in step S3, revolution frequency is 5Hz ~ 30Hz；Rotation frequency is 5Hz ~ 30Hz, and total mixing time is
10min ~ 60min, and controlled at 20 DEG C ~ 50 DEG C, vacuum degree is -0.80Mpa ~ (- 1Mpa).
Wherein, when needing to prepare negative electrode slurry, then after step S3, further include step S4: butylbenzene being added into dry powder
Rubber, and the butadiene-styrene rubber is the 1 ~ 5% of dry powder total amount, and is stirred using revolution, rotation mode.
Wherein, in step S4, revolution frequency is 5Hz ~ 25Hz, and rotation frequency is 5Hz ~ 20Hz, and total mixing time is 10min
~ 60min and controlled at 20 DEG C ~ 50 DEG C, vacuum degree is -0.80Mpa ~ (- 1Mpa).
Wherein, the active matter includes positive electrode active material and negative electrode active material；Wherein
Positive electrode active material is at least one of cobalt acid lithium, nickle cobalt lithium manganate, LiMn2O4 and LiFePO4.
Negative electrode active material is at least one of graphite, coke, fibrous carbon and carbon black.
Wherein, the solvent is at least one of deionized water, ring miscellany compound and ketone compounds；Wherein
One of which in the non-tetrahydrofuran of ring miscellany compound, N-Methyl pyrrolidone, pyridine and pyrroles；
Ketone compounds are the one of which in acetone, butanone and pentanone.
The beneficial effects of the present invention are: be different from the prior art, the present invention sequentially add amount of activated object, binder,
Conductive agent and remaining binder, active matter, and stirred using revolution, autobiography mode, dry powder is obtained, and be added suitable molten
Agent is first stirred, and solvent is added, and adjusts viscosity.By the above-mentioned means, the present invention can prepare the slurry of lithium ion battery, and grasp
Make simply, it is high-efficient.
In a specific embodiment, binder plays the role of thickening, and Kynoar etc. or carboxylic first can be selected
The thickener of base sodium cellulosate.Wherein binder and conductive agent are not especially to limit, and can be selected according to demand, and conductive agent may be selected
One of conductive black, superconduction carbon black, carbon nanotube, acetylene black, carbon fiber and electrically conductive graphite are a variety of.And carbon nanometer is added
Pipe (CNT) is to prepare anode sizing agent, and it is to prepare negative electrode slurry that butadiene-styrene rubber (SBR), which is added,.
Preferably, the 55 ~ 75% of solvent total amount are added in step S2, revolution frequency be 25 ~ 30Hz rotation frequency be 20 ~
25Hz, mixing time is 110 ~ 140min, controlled at 30 ~ 40 DEG C, to be stirred.
Preferably, in step S3, revolution frequency be 25 ~ 30Hz, rotation frequency be 20 ~ 25Hz, mixing time be 20 ~
40min, controlled at 30 ~ 40 DEG C, vacuum degree is -0.95Mpa ~ (- 1Mpa), to be stirred.
Preferably, in step S4, butadiene-styrene rubber additional amount is the 2 ~ 3% of dry powder, and revolution frequency is that 10 ~ 15 rotation frequencies are
5 ~ 10Hz, mixing time are 20 ~ 40min, and controlled at 30 ~ 40 DEG C, vacuum degree is -0.95Mpa ~ (- 1Mpa), to carry out
Stirring.
The present invention is to be alternately added active matter, conductive agent, binder (or thickener) using quantitative layering, and revolve low speed
Dispersion, rotation high speed dispersion.Since the present invention directly disperses dry powder blend, the glue time is saved, avoids having solvent case
Lower conductive agent polymerization, is not easy the problem of dispersing, improves dispersion quality.The solvent of addition 30-85%, high viscosity high speed dispersion,
Prevent conductive agent after polymerization.Present invention saves the glue times, shorten every step mixing time, avoid conductive agent polymerization,
To improve the quality and efficiency of slurrying.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalents made by bright specification and accompanying drawing content are applied directly or indirectly in relevant technical field, similarly include
In scope of patent protection of the invention.
Claims (10)
1. a kind of dry powder pulping process of lithium ion battery, which is characterized in that include at least following steps:
S1: the 20 ~ 50% of active matter total amount, the 25 ~ 50% of binder total amount is sequentially added in order in a mixing bowl, conduction
Agent, remaining binder, remaining active matter, and be stirred using revolution mode and rotation mode, until obtaining no color differnece
Heap buildup；
S2: being added the 30 ~ 85% of solvent total amount, stirs 15min using revolution, rotation mode, obtains siccative；
S3: being added remaining solvent, to adjust viscosity, and is stirred using revolution, rotation mode.
2. the dry powder pulping process of lithium ion battery according to claim 1, which is characterized in that in step S1, using revolution,
Rotation mode stirs 15 minutes, stops stirring, when the coloured difference of heap buildup, then continues stirring until holding after heap buildup no color differnece
Row step S2.
3. the dry powder pulping process of lithium ion battery according to claim 2, which is characterized in that in step S1, revolve frequency
For 5Hz ~ 30Hz；Rotation frequency is 5Hz ~ 35Hz, and total mixing time is 60min ~ 150min, and controlled at 20 DEG C ~ 50
℃。
4. the dry powder pulping process of lithium ion battery according to claim 1, which is characterized in that in step S1, binder is accounted for
The 0.8% ~ 3.0% of dry powder total amount, conductive agent account for the 0.5% ~ 3.0% of dry powder total amount.
5. the dry powder pulping process of lithium ion battery according to claim 1, which is characterized in that when needing to prepare anode sizing agent
When, then in step s 2, while the 30 ~ 85% of solvent total amount are added, carbon nanotube is added, and using revolution, rotation mode
Stirring, and the frequency that revolves is 5Hz ~ 35Hz；Rotation frequency is 5Hz ~ 25Hz, and total mixing time is 60min ~ 150min, and is controlled
Temperature processed is 20 DEG C ~ 50 DEG C.
6. the dry powder pulping process of lithium ion battery according to claim 1, which is characterized in that in step S3, revolve frequency
For 5Hz ~ 30Hz；Rotation frequency is 5Hz ~ 30Hz, and total mixing time is 10min ~ 60min, and controlled at 20 DEG C ~ 50
DEG C, vacuum degree is -0.80Mpa ~ (- 1Mpa).
7. the dry powder pulping process of lithium ion battery according to claim 1, which is characterized in that when needing to prepare negative electrode slurry
When, then further include step S4 after step S3: butadiene-styrene rubber being added into dry powder, and the butadiene-styrene rubber is the 1 of dry powder total amount
~ 5%, and stirred using revolution, rotation mode.
8. the dry powder pulping process of lithium ion battery according to claim 1, which is characterized in that in step S4, revolve frequency
For 5Hz ~ 25Hz, rotation frequency is 5Hz ~ 20Hz, and total mixing time is 10min ~ 60min and controlled at 20 DEG C ~ 50 DEG C, very
Reciprocal of duty cycle is -0.80Mpa ~ (- 1Mpa).
9. the dry powder pulping process of lithium ion battery according to claim 1, which is characterized in that the active matter includes anode
Active matter and negative electrode active material；Wherein: positive electrode active material be cobalt acid lithium, nickle cobalt lithium manganate, LiMn2O4 and LiFePO4 in extremely
Few one kind；Negative electrode active material is at least one of graphite, coke, fibrous carbon and carbon black.
10. the dry powder pulping process of lithium ion battery according to claim 1, which is characterized in that the solvent is deionization
At least one of water, ring miscellany compound and ketone compounds；Its non-tetrahydrofuran of middle ring miscellany compound, N- methylpyrrole
One of which in alkanone, pyridine and pyrroles；
Ketone compounds are the one of which in acetone, butanone and pentanone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710700023.7A CN109411693A (en) | 2017-08-16 | 2017-08-16 | The dry powder pulping process of lithium ion battery |
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| CN201710700023.7A CN109411693A (en) | 2017-08-16 | 2017-08-16 | The dry powder pulping process of lithium ion battery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111816844A (en) * | 2020-08-21 | 2020-10-23 | 安瑞创新(厦门)能源有限公司 | Positive lithium iron phosphate material slurry and pulping method thereof |
| CN112838261A (en) * | 2020-12-28 | 2021-05-25 | 惠州亿纬创能电池有限公司 | Negative electrode slurry and homogenizing method and application thereof |
-
2017
- 2017-08-16 CN CN201710700023.7A patent/CN109411693A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111816844A (en) * | 2020-08-21 | 2020-10-23 | 安瑞创新(厦门)能源有限公司 | Positive lithium iron phosphate material slurry and pulping method thereof |
| CN112838261A (en) * | 2020-12-28 | 2021-05-25 | 惠州亿纬创能电池有限公司 | Negative electrode slurry and homogenizing method and application thereof |
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Application publication date: 20190301 |