CN108470886A - A kind of lithium ion battery anode slurry and preparation method thereof, cathode pole piece, lithium ion battery - Google Patents
A kind of lithium ion battery anode slurry and preparation method thereof, cathode pole piece, lithium ion battery Download PDFInfo
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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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- 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
- H01M4/133—Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
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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
- H01M4/36—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
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
- H01M4/587—Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
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Abstract
The present invention relates to a kind of lithium ion battery anode slurry and preparation method thereof, cathode pole piece, lithium ion batteries, belong to lithium ion battery preparing technical field.The preparation method of the lithium ion battery anode slurry of the present invention, includes the following steps：Negative electrode active material, conductive agent and sodium carboxymethylcellulose are mixed with first part of water, then be added aqueous binders mixing, finally add second part of water and organic solvent mixing to get；The mass ratio of first part of water, second part of water and organic solvent is 60~80:20~40:1~5.The preparation method of the lithium ion battery anode slurry of the present invention, the dispensing time is short, low energy consumption, simple for process, and good evenness, the caking property of the negative electrode slurry of gained are strong, can significantly improve the ratio energy and service life of cathode pole piece.
Description
Technical field
The present invention relates to a kind of lithium ion battery anode slurry and preparation method thereof, cathode pole piece, lithium ion batteries, belong to
Lithium ion battery preparing technical field.
Background technology
Lithium ion battery have light-weight, higher than energy, operating voltage is high, long lifespan, smaller self discharge the advantages that, lithium
Ion battery is in various portable electronic digital products, electric vehicle and accumulation power supply etc. extensive use.But with state
Requirement of the family to energy density constantly propose, 2015, power battery than energy reach 150 watt-hours/kilogram or more, recycle
Service life stably reaches 2000 times or 10 years or more；To the year two thousand twenty, power battery module than energy reach 300 watt-hours/kilogram or more.
Therefore, it is necessary to which improving lithium ion battery energy density on the basis of ensureing performance, the maximized dosage for reducing auxiliary material increases
Add the content of active material.Such as can by prepare have good uniformity, caking property stronger negative electrode slurry improves cathode pole piece
Heavy-current discharge, than performances such as energy and service lifes.
In the prior art, application publication number is that the Chinese invention patent of CN106684333A discloses a kind of lithium ion battery
The preparation method of negative electrode slurry, includes the following steps：1) CMC and deionized water are mixed, is uniformly dispersed and CMC glues is made；2)
Conductive carbon black is added in obtained CMC glues, is uniformly dispersed；3) carbon material is added to be uniformly dispersed；4) LA133 is added, point
It dissipates uniform；5) viscosity is adjusted with deionized water；6) defoaming, filtering are vacuumized, lithium ion battery anode slurry is obtained.The lithium ion
The preparation method of battery cathode slurry improves the suspension stability of pulp of lithium ion battery by the cooperation of CMC and LA133,
And can ensure the adhesive property of cathode pole piece, but pulping process is complicated, and the dispensing time is long, energy consumption is big, is unfavorable for industrialization.
Invention content
The object of the present invention is to provide the lithium ion battery anode slurries that a kind of dispensing time is short, low energy consumption, simple for process
Preparation method.
The lithium ion battery anode slurry that the present invention also provides a kind of using obtained by above-mentioned preparation method, using the lithium
The cathode pole piece of ion battery negative electrode slurry and the lithium ion battery for using the cathode pole piece.
In order to achieve the goal above, technical solution used by the preparation method of the lithium ion battery anode slurry of the present invention
It is：
A kind of preparation method of lithium ion battery anode slurry, includes the following steps：By negative electrode active material, conductive agent and
Sodium carboxymethylcellulose is mixed with first part of water, and aqueous binders mixing is then added, and finally adds second part of water and organic
Solvent mixing to get；The mass ratio of first part of water, second part of water and organic solvent is 60~80:20~40:1~5.
The preparation method of the lithium ion battery anode slurry of the present invention is eventually adding second part of water compared with prior art
And organic solvent, the time for preparing slurry can be reduced, energy consumption is saved.It is to allow slurry from high viscosity mistake that aqueous solvent, which is gradually added,
It crosses to low viscosity, to reach the finely dispersed purpose of slurry, prepares the slurry of stability, uniformity.
The preparation method of the lithium ion battery anode slurry of the present invention, the dispensing time is short, low energy consumption, simple for process, gained
Negative electrode slurry good evenness, caking property it is strong, can significantly improve cathode pole piece heavy-current discharge, than energy and use the longevity
Life.
The ratio of the quality of the negative electrode active material and first part of water is 95~97:60~80.
The negative electrode active material, conductive agent, sodium carboxymethylcellulose and aqueous binders mass ratio be 95~97:0
~1:0.1~1:2.5~3.5.Preferably the quality sum of the negative electrode active material, conductive agent and sodium carboxymethylcellulose is
100 parts.
Preferably, the negative electrode active material, conductive agent, sodium carboxymethylcellulose mass ratio be 95~97:0.5~1:
0.1~1:2.5~3.5.If the mass ratio of the negative electrode active material, conductive agent and carboxymethyl cellulose is 96.4:0.3:
0.5:2.8.By adjusting the formula of lithium ion battery anode slurry, increase the content of active material, helps to improve capacity hair
Wave performance.
When mixing negative electrode active material, conductive agent and carboxymethyl cellulose with first part of water, first cathode can be lived
Property substance, conductive agent and carboxymethyl cellulose are mixed, and are then added first part of water and are premixed.
The aqueous binders are polyacrylate aqueous binders.
The polyacrylate aqueous binders are LA132 aqueous binders.
The conductive agent is graphite, carbon black, one kind in carbon nanotube or arbitrary combination.Preferably, the conductive agent is
One kind in carbon black, carbon nanotube or arbitrary combination.
The negative electrode active material is graphite, one kind in mesocarbon microspheres or arbitrary combination.People may be used in graphite
Graphite is made, the capacity of the artificial graphite is not less than 350mAh/g.The migration for being conducive to lithium ion using artificial graphite, goes forward side by side one
Step improves the heavy-current discharge of lithium ion battery, than performances such as energy and service lifes.
The organic solvent is N-Methyl pyrrolidone.
The solid content of the lithium ion battery anode slurry is 50~55%.The viscosity of the lithium ion battery anode slurry
For 2000~3500mPas.
The mixing carries out in the blender with revolution and rotation function, the mixing such as in closing pulp grinder.
The revolution rotating speed of the mixing is 1000~3500rpm, and rotation rotating speed is 10~4000rpm, and the time is 2~3h.
Preferably, the revolution rotating speed of the mixing is 1000~1800rpm, and rotation rotating speed is 10~30rpm.
Technical solution is used by the lithium ion battery anode slurry of the present invention：
It is a kind of using lithium ion battery anode slurry made from above-mentioned preparation method.
The lithium ion battery anode slurry uniformity of the present invention is preferable, caking property is stronger, is conducive to improve the big of cathode pole piece
Current discharge, than energy and service life.
Preferably, the solid content of the lithium ion battery anode slurry is 50~55%.The negative electrode of lithium ion battery slurry
The viscosity of material is 2000~3500mPas.
Technical solution is used by the cathode pole piece of the present invention：
It is a kind of to use cathode pole piece made from above-mentioned lithium ion battery anode slurry.
The lithium ion battery that the cathode pole piece of the present invention is obtained using the preparation method of above-mentioned lithium ion battery anode slurry
Negative electrode slurry can significantly improve discharge current, specific capacity and the service life of cathode pole piece.
The preparation method of the cathode pole piece of the present invention, includes the following steps：The lithium ion battery anode slurry is coated with
On a current collector, coating pole piece is obtained；Then coating pole piece is dried, roll-in, is placed in vacuum tank after cross cutting and does successively
It is dry to get.The collector is copper foil.Preferably, the surface density of the copper foil is 67~77g/m2。
Preferably, cathode pole piece includes the negative electrode material layer of collector and coating on a current collector, the negative electrode material layer
It is made by lithium ion battery anode slurry coating；The surface density of the negative electrode material layer is 83~95g/m2, compacted density
For 1.4~1.7g/m2。
Technical solution is used by the lithium ion battery of the present invention：
A kind of lithium ion battery using above-mentioned cathode pole piece.
The lithium ion battery of the present invention, discharge current and advantage higher than energy and with long service life.
Description of the drawings
Fig. 1 is that the viscosity of the lithium ion battery anode slurry of embodiment 1 changes with time figure.
Specific implementation mode
Technical scheme of the present invention is further described below in conjunction with specific implementation mode.
The surface density of copper foil used by cathode pole piece in specific implementation mode is 72g/m2, thickness is 8 μm.
Embodiment 1
Negative electrode active material used by the present embodiment is artificial graphite；Used conductive agent is carbon black；It is used
Aqueous binders are LA132 aqueous binders；Used organic solvent is N-Methyl pyrrolidone.
The preparation method of the lithium ion battery anode slurry of the present embodiment, includes the following steps：
Conductive agent, negative electrode active material, sodium carboxymethylcellulose are added in material-compound tank and stir 0.5h, is then added first
It in part deionized water, is premixed by the way of stirring, then adds aqueous binders and carry out high-speed stirred 2.5h mixings,
Add second part of deionized water and organic solvent carry out high-speed stirred 2.5h mixings to get；Used conductive agent, cathode are lived
Property substance, sodium carboxymethylcellulose, aqueous binders, first part of deionized water, the matter of second part of deionized water and organic solvent
Amount is than being 0.9:96:0.3:2.8:75:24:1；The revolution rotating speed of high-speed stirred is 1800rpm, and the rotating speed of rotation is 30rpm.
The lithium ion battery anode slurry of the present embodiment uses the preparation side of the lithium ion battery anode slurry of the present embodiment
Method is made, solid content 52.93%, viscosity 3050mPas.
The cathode pole piece of the present embodiment is made using the lithium ion battery anode slurry of the present embodiment, specific preparation method packet
Include following steps：The lithium ion battery anode slurry of the present embodiment is coated on copper foil, then drying, roll-in, punching press, true
Be dried in empty drying box, on copper foil formed negative electrode material layer to get.The face of the negative electrode material layer of gained cathode pole piece is close
Degree is 86g/m2, compacted density 1.7g/m2.The thickness of negative electrode material layer is 109 μm.
The lithium ion battery of the present embodiment, including positive plate, negative plate, electrolyte, diaphragm, negative plate use the present embodiment
Cathode pole piece.
Embodiment 2
Negative electrode active material used by the present embodiment is artificial graphite；Used conductive agent is carbon nanotube；It is adopted
Aqueous binders are LA132 aqueous binders；Used organic solvent is N-Methyl pyrrolidone.
The preparation method of the lithium ion battery anode slurry of the present embodiment, includes the following steps：
Conductive agent, negative electrode active material, sodium carboxymethylcellulose are added in material-compound tank and stir 1h, is then added first part
It in deionized water, is premixed by the way of stirring, then adds aqueous binders and carry out high-speed stirred 2h mixings, then add
Enter second part of deionized water and formula ratio organic solvent carry out high-speed stirred 3h mixings to get；Used conductive agent, cathode
Active material, sodium carboxymethylcellulose, aqueous binders, first part of deionized water, second part of deionized water and organic solvent
Mass ratio is 1:95:0.5:3.5:70:27:3；The revolution rotating speed of high-speed stirred is 2200rpm, and the rotating speed of rotation is 35rpm.
The lithium ion battery anode slurry of the present embodiment uses the preparation side of the lithium ion battery anode slurry of the present embodiment
Method is made, solid content 51.76%, viscosity 2834mPas.
The cathode pole piece of the present embodiment is made using the lithium ion battery anode slurry of the present embodiment, specific preparation method packet
Include following steps：The lithium ion battery anode slurry of the present embodiment is coated on copper foil, then drying, roll-in, punching press, true
Be dried in empty drying box, on copper foil formed negative electrode material layer to get.The face of the negative electrode material layer of gained cathode pole piece is close
Degree is 83g/m2, compacted density 1.6g/m2.The thickness of negative electrode material layer is 112 μm.
The lithium ion battery of the present embodiment, including positive plate, negative plate, electrolyte, diaphragm, negative plate use the present embodiment
Cathode pole piece.
Embodiment 3
Negative electrode active material used by the present embodiment is artificial graphite；Used conductive agent is carbon black；It is used
Aqueous binders are LA132 aqueous binders；Used organic agent is N-Methyl pyrrolidone.
The preparation method of the lithium ion battery anode slurry of the present embodiment, includes the following steps：
Conductive agent, negative electrode active material, sodium carboxymethylcellulose are added in material-compound tank and stir 2h, is then added first part
It carries out in deionized water, is premixed by the way of stirring, then add aqueous binders and carry out high-speed stirred 3h mixings,
Add second part of deionized water and organic solvent carry out high-speed stirred 2h mixings to get；Used conductive agent, negative electrode active
Substance, sodium carboxymethylcellulose, aqueous binders, first part of deionized water, the quality of second part of deionized water and organic solvent
Than being 0.5:96.9:0.1:2.5:77:22:1；The revolution rotating speed of high-speed stirred is 3500rpm, and the rotating speed of rotation is 4000rpm.
The lithium ion battery anode slurry of the present embodiment uses the preparation side of the lithium ion battery anode slurry of the present embodiment
Method is made, solid content 53.04%, viscosity 2900mPas.
The cathode pole piece of the present embodiment is made using the lithium ion battery anode slurry of the present embodiment, specific preparation method packet
Include following steps：The lithium ion battery anode slurry of the present embodiment is coated on copper foil, then drying, roll-in, punching press, true
Be dried in empty drying box, on copper foil formed negative electrode material layer to get.The face of the negative electrode material layer of gained cathode pole piece is close
Degree is 89g/m2, compacted density 1.5g/m2.The thickness of negative electrode material layer is 127 μm.
The lithium ion battery of the present embodiment, including positive plate, negative plate, electrolyte, diaphragm, negative plate use the present embodiment
Cathode pole piece.
Embodiment 4
Negative electrode active material used by the present embodiment is mesocarbon microspheres；Used conductive agent is carbon black；It is adopted
Aqueous binders are LA132 aqueous binders；Used organic solvent is N-Methyl pyrrolidone.
The preparation method of the lithium ion battery anode slurry of the present embodiment, includes the following steps：
Conductive agent, negative electrode active material, sodium carboxymethylcellulose are added in material-compound tank and stir 0.5h, is then added first
It in part deionized water, is premixed by the way of stirring, then adds aqueous binders and carry out high-speed stirred 2.5h mixings,
Add second part of deionized water and organic solvent carry out high-speed stirred 2.5h mixings to get；Used conductive agent, cathode are lived
Property substance, sodium carboxymethylcellulose, aqueous binders, first part of deionized water, the matter of second part of deionized water and organic solvent
Amount is than being 0.6:95.2:1:3.2:60:35:5；The revolution rotating speed of high-speed stirred is 2500rpm, and the rotating speed of rotation is 30rpm.
The lithium ion battery anode slurry of the present embodiment uses the preparation side of the lithium ion battery anode slurry of the present embodiment
Method is made, solid content 50.87%, viscosity 3278mPas.
The cathode pole piece of the present embodiment is made using the lithium ion battery anode slurry of the present embodiment, specific preparation method packet
Include following steps：The lithium ion battery anode slurry of the present embodiment is coated on copper foil, then drying, roll-in, punching press, true
Be dried in empty drying box, on copper foil formed negative electrode material layer to get.The face of the negative electrode material layer of gained cathode pole piece is close
Degree is 85g/m2, compacted density 1.5g/m2.The thickness of negative electrode material layer is 121 μm.
The lithium ion battery of the present embodiment, including positive plate, negative plate, electrolyte, diaphragm, cathode pole piece use this implementation
The cathode pole piece of example.
Embodiment 5
Negative electrode active material used by the present embodiment is artificial graphite；Used aqueous binders are that LA132 is aqueous
Binder；Used organic agent is N-Methyl pyrrolidone.
The preparation method of the lithium ion battery anode slurry of the present embodiment, includes the following steps：
Negative electrode active material, sodium carboxymethylcellulose are added in material-compound tank and stir 2h, first part of deionization is then added
It carries out in water, is premixed by the way of stirring, then add aqueous binders and carry out high-speed stirred 3h mixings, add
Second part of deionized water and organic solvent carry out high-speed stirred 2h mixings to get；Used negative electrode active material, carboxymethyl are fine
The mass ratio for tieing up plain sodium, aqueous binders, first part of deionized water, second part of deionized water and organic solvent is 97:0.5:
2.5:80:40:4；The revolution rotating speed of high-speed stirred is 1000rpm, and the rotating speed of rotation is 10rpm.
The lithium ion battery anode slurry of the present embodiment uses the preparation side of the lithium ion battery anode slurry of the present embodiment
Method is made, solid content 51.49%, viscosity 3200mPas.
The cathode pole piece of the present embodiment is made using the lithium ion battery anode slurry of the present embodiment, specific preparation method packet
Include following steps：The lithium ion battery anode slurry of the present embodiment is coated on copper foil, then drying, roll-in, punching press, true
Be dried in empty drying box, on copper foil formed negative electrode material layer to get.The face of the negative electrode material layer of gained cathode pole piece is close
Degree is 95g/m2, compacted density 1.65g/m2.The thickness of negative electrode material layer is 123 μm.
The lithium ion battery of the present embodiment, including positive plate, negative plate, electrolyte, diaphragm, negative plate use the present embodiment
Cathode pole piece.
Comparative example
The lithium ion battery negative electrode of comparative example is made of the negative electrode material layer of collector and setting on a current collector；
The negative electrode material layer consists of the following mass percentage components：Active material 95%, carbon black 1.4%, aqueous butadiene-styrene rubber
3.6%.Used collector is the same as the collector of embodiment 1, the 89g/m of negative electrode material layer2, compacted density 1.5g/m2；It is negative
The thickness of pole material layer is 127 μm.
Experimental example 1
The cathode pole piece that Examples 1 to 5 and comparative example is respectively adopted prepares button cell and carries out the property of button cell
It can test.The preparation method of button cell：LiPF in electrolyte6For electrolyte (a concentration of 1mol/L), volume ratio 1:1 EC
Mixture with DEC is solvent；Metal lithium sheet is to electrode, and diaphragm uses polypropylene (PP) film.Button cell, which is assemblied in, to be flushed with hydrogen
It is carried out in the glove box of gas.Chemical property carries out on the blue electricity CT2001A type cell testers in Wuhan, charging/discharging voltage range
For 0.005V to 2.0V, charge-discharge velocity 0.1C.
Test result is as shown in table 1.
The performance test results of 1 button cell of table
By data in table 1 it is found that using this experimental program, the gram volume of negative material and first effect better performances.
Experimental example 2
The cathode pole piece that Examples 1 to 5 and comparative example is respectively adopted prepares soft bag lithium ionic cell and to test gained soft
The preparation method of the cycle performance of packet lithium ion battery, soft bag lithium ionic cell is：It will be negative in Examples 1 to 5 and comparative example
Negative plate is made in pole material, using nickel cobalt manganese as positive electrode；LiPF in electrolyte6For electrolyte (a concentration of 1mol/L), volume
Than being 1:The mixture of 1 EC and DEC are solvent；10Ah soft-package batteries are prepared using common diaphragm, labeled as A1, A2, A3,
A4, A5 and B.It is 1C/1C with charge-discharge magnification, voltage range 3.0V-4.2V, test battery follows at 25 ± 3 DEG C of temperature
Ring performance.Test result is as shown in table 2.
The result of the cycle performance test of 2 soft bag lithium ionic cell of table
| Battery | Cathode pole piece | N weeks capacity retention ratio (%) of cycle |
| A1 | Embodiment 1 | 1200 weeks 90% |
| A2 | Embodiment 2 | 1850 weeks 90% |
| A3 | Embodiment 3 | 1000 weeks 90% |
| A4 | Embodiment 4 | 950 weeks 90% |
| A5 | Embodiment 5 | 1570 weeks 90% |
| B | Comparative example | 900 weeks 90% |
Data in table 2 it is found that soft bag lithium ionic cell made of the pole piece of Examples 1 to 5 has good cycle
Performance extends the service life of lithium ion battery, and slurry is steady in a long time made from preparation method using the present invention
It is qualitative preferable, the dressing that can be consistent in coating process, to be avoided that the appearance of lithium deposition.
Experimental example 3
The negative electrode slurry that embodiment 1 is respectively adopted carries out stability test, by the slurry prepared in being positioned over beaker,
The viscosity change situation of slurry after test different time.Test results are shown in figure 1.As shown in Figure 1, using the lithium of embodiment 1
The shortcomings that slurry viscosity that improves of slurry obtained by the preparation method of ion battery negative electrode slurry declines soon, free settling, improves
The stability of slurry.
Claims (10)
1. a kind of preparation method of lithium ion battery anode slurry, it is characterised in that：Include the following steps：By negative electrode active material
Matter, conductive agent and sodium carboxymethylcellulose are mixed with first part of water, and aqueous binders mixing is then added, finally adds second
Part water and organic solvent mixing to get；The mass ratio of first part of water, second part of water and organic solvent is 60~80:20~
40:1~5.
2. the preparation method of lithium ion battery anode slurry according to claim 1, it is characterised in that：The negative electrode active
Substance, conductive agent, sodium carboxymethylcellulose and aqueous binders mass ratio be 95~97:0~1:0.1~1:2.5~3.5.
3. the preparation method of lithium ion battery anode slurry according to claim 1, it is characterised in that：The aqueous bonding
Agent is polyacrylate aqueous binders.
4. the preparation method of lithium ion battery anode slurry according to claim 1, it is characterised in that：The conductive agent is
One kind in graphite, carbon black, carbon nanotube or arbitrary combination.
5. the preparation method of lithium ion battery anode slurry according to claim 1, it is characterised in that：The negative electrode active
Substance is graphite, one kind in mesocarbon microspheres or arbitrary combination.
6. the preparation method of lithium ion battery anode slurry according to claim 1, it is characterised in that：The lithium-ion electric
The solid content of pond negative electrode slurry is 50~55%.
7. a kind of using lithium ion battery anode slurry made from preparation method as described in claim 1.
8. a kind of using cathode pole piece made from lithium ion battery anode slurry as claimed in claim 7.
9. cathode pole piece according to claim 8 includes the negative electrode material layer of collector and coating on a current collector, special
Sign is：The negative electrode material layer is coated with by the lithium ion battery anode slurry and is made；The surface density of the negative electrode material layer
For 83~95g/m2, compacted density is 1.4~1.7g/m2。
10. a kind of lithium ion battery using cathode pole piece as claimed in claim 8.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109524615A (en) * | 2018-10-31 | 2019-03-26 | 风帆有限责任公司 | A method of improving negative electrode of lithium ion battery and is coated with appearance |
| CN112151756A (en) * | 2020-09-14 | 2020-12-29 | 江苏塔菲尔新能源科技股份有限公司 | Negative plate and battery |
| CN114242992A (en) * | 2021-12-21 | 2022-03-25 | 深圳市和盈新能电子有限公司 | Preparation method of carbon-silicon negative electrode slurry, carbon-silicon negative electrode slurry and lithium ion battery |
| CN116093267A (en) * | 2022-12-31 | 2023-05-09 | 安徽理士新能源发展有限公司 | Preparation method of negative electrode slurry, negative electrode plate and lithium battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109524615B (en) * | 2018-10-31 | 2021-11-16 | 风帆有限责任公司 | Method for improving coating appearance of lithium ion battery cathode |
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| CN114242992A (en) * | 2021-12-21 | 2022-03-25 | 深圳市和盈新能电子有限公司 | Preparation method of carbon-silicon negative electrode slurry, carbon-silicon negative electrode slurry and lithium ion battery |
| CN116093267A (en) * | 2022-12-31 | 2023-05-09 | 安徽理士新能源发展有限公司 | Preparation method of negative electrode slurry, negative electrode plate and lithium battery |
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Address after: 454191 Industrial Cluster Area, Jiaozuo City, Henan Province, Standardized Workshop Area on the North Side of Xinyuan Road, West Park Applicant after: Multi-fluorine New Energy Technology Co., Ltd. Address before: 454191 Henan Jiaozuo industrial agglomeration area, West Park, Xinyuan Road, north side of the standardization workshop. Applicant before: Duofuduo (Jiaozuo) Amperex Technology Limited |
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Application publication date: 20180831 |