CN108336276A - A kind of preparation method of the lithium ion battery separator of high stable hydrophobic ceramic coating - Google Patents
A kind of preparation method of the lithium ion battery separator of high stable hydrophobic ceramic coating Download PDFInfo
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- CN108336276A CN108336276A CN201711317242.3A CN201711317242A CN108336276A CN 108336276 A CN108336276 A CN 108336276A CN 201711317242 A CN201711317242 A CN 201711317242A CN 108336276 A CN108336276 A CN 108336276A
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/403—Manufacturing processes of separators, membranes or diaphragms
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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
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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
- H01M10/42—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
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/431—Inorganic material
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/449—Separators, membranes or diaphragms characterised by the material having a layered structure
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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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Abstract
The invention discloses a kind of preparation methods of the lithium ion battery separator of high stable hydrophobic ceramic coating, are related to technical field of lithium ion, include the following steps：Alumina ceramic powder is mixed with chlorosilane, organic solvent, stirring is hydrolyzed into organic solvent volatilization completely, obtains mixture；Mixture is placed in ammonia atmosphere and carries out pyrolysis processing, obtains the alumina ceramic powder of hydrophobically modified；The alumina ceramic powder of hydrophobically modified is distributed in water, addition polyvinylpyrrolidone and sodium cellulose glycolate, pre-dispersed thereto, then milled processed, then binder is added thereto, continues the ceramic slurry for disperseing to be coated；By ceramic slurry be coated in lithium ion battery separator surface, drying to get.For the present invention using the alumina ceramic powder of hydrophobically modified as lithium ion battery separator ceramic coating material, safe, heat resistance, puncture strength, water retainability are excellent, can improve the stability of ceramic diaphragm.
Description
Technical field
The present invention relates to the lithium-ion electrics that technical field of lithium ion more particularly to a kind of high stable hydrophobic ceramic coat
The preparation method of pond diaphragm.
Background technology
Lithium ion battery is because with bigger than energy, light weight, cycle life is good, and self-discharge rate is low, memory-less effect and right
Advantages of environment protection is widely used in the large-scale application field such as national defense industry, electronic industry, space technology.Lithium ion battery
Mainly by positive and negative electrode material, electrolyte, diaphragm, shell composition, diaphragm is the important component of lithium ion battery.Lithium ion
The main function of battery diaphragm has：Separate positive and negative anodes, prevents the two poles of the earth contact short circuit, while lithium ion being made to be moved between positive and negative anodes
It moves, completes charge and discharge process.According to different structure and composition, lithium ion battery separator material mainly has：Polyolefin film, nonwoven
The lithium ion battery separator of cloth, polymer/inorganic composite diaphragm etc., commercialization is mainly polyethylene (PE), and polypropylene (PP) is micro-
Pore membrane and polypropylene, polyethylene/polypropylene (PP/PE/PP) three-layer membrane, however these basement membrane safeties are not high, heat resistance is worn
Pierce that intensity, to protect the performances such as fluidity bad, and mechanically actuated performance is bad, cannot significantly improve lithium ion battery physical index and
Chemical property.The aluminium oxide ceramics coating diaphragm occurred in recent years can dramatically increase the thermal contraction performance of diaphragm, Jin Erti
The security performance of high diaphragm.But since the long-time that the water absorbent surface problem of aluminium oxide results in ceramic coating membrane places water suction
Caused stability problem.Therefore, it is necessary to develop a kind of new lithium ion battery separator to meet the items of lithium ion battery separator
It is required that including：Mechanical strength, stability, wellability, production operability etc..
Invention content
Technical problems based on background technology, the present invention propose a kind of lithium ion of high stable hydrophobic ceramic coating
The preparation method of battery diaphragm can significantly improve the chemical property of lithium ion battery, and preparation method is simple and environmentally-friendly, production
Operability is strong.
A kind of preparation method of the lithium ion battery separator of high stable hydrophobic ceramic coating proposed by the present invention, including it is following
Step：
S1, alumina ceramic powder being mixed with chlorosilane, organic solvent, stirring is hydrolyzed into organic solvent volatilization completely,
Obtain mixture；
S2, it mixture is placed in ammonia atmosphere carries out pyrolysis processing, obtain the alumina ceramic powder of hydrophobically modified；
S3, the alumina ceramic powder of hydrophobically modified is distributed in water, polyethylene of dispersing agent pyrrolidines is added thereto
Ketone and sodium cellulose glycolate, pre-dispersed, then milled processed, then binder is added thereto, continue to disperse to be coated
Ceramic slurry；
S4, the surface that ceramic slurry is coated in lithium ion battery separator, what drying coated to get high stable hydrophobic ceramic
Lithium ion battery separator.
Preferably, in the S1, the quality volume volume ratio of alumina ceramic powder and chlorosilane, organic solvent is 1：
(3-10)mL：(10-50)mL.
Preferably, in the S1, organic solvent is one or more of normal heptane, hexamethylene, benzene and toluene；It is preferred that
Ground, the chlorosilane are or mixtures thereof dimethyl dichlorosilane (DMCS) or dimethyldichlorosilane.
Preferably, in the S2, the temperature of pyrolysis processing is 300-800 DEG C, time 1-3h.
Preferably, in the S3, the alumina ceramic powder of hydrophobically modified is dispersed with stirring in water, mixing time is
0.5-1h。
Preferably, in the S3, polyethylene of dispersing agent pyrrolidones and sodium cellulose glycolate are added thereto, using point
It is pre-dispersed with the rotating speed of 500-1500r/min to dissipate machine, then milled processed, then binder is added thereto, use dispersion machine with
The rotating speed of 500-1000r/min continues the ceramic slurry for disperseing to be coated.
Preferably, in the S3, in terms of the quality of the alumina ceramic powder after hydrophobically modified, sodium cellulose glycolate
Additive amount is 0.3-0.8%.
Preferably, it in the S3, is ground using nano-level grinder, the nano-level grinder grinding grain size of zirconium pearl
It it is 0.1-0.6 μm, grinding rotating speed is 600-2500r/min.
Preferably, in the S3, binder is acrylic adhesive, is one in K702, GR401, GR405, PVA
Kind；Preferably, in terms of the quality of the alumina ceramic powder after hydrophobically modified, the additive amount of binder is 5-10%.
Preferably, in the S4, ceramic slurry is coated uniformly on to the surface of lithium ion battery separator using coating machine, applied
It is 10-50m/min to cover speed.
Advantageous effect：Using alumina ceramic powder as raw material in the present invention, after carrying out hydrophobically modified to it, wrapped on its surface
The nano particle of one layer of 20-40nm is covered, there is modified alumina ceramic powder material excellent hydrophobic performance, surface to dredge
Water angle >=110 °；Using the alumina ceramic powder material of hydrophobically modified as lithium ion battery separator ceramic coating material, due to
Alumina particle is small, in large specific surface area, coating procedure in slurry after solvent volatilization, on the surface of lithium ion battery separator, oxygen
Change and form effective tridimensional network between aluminium nano-scale particle and particle, improves lithium ion battery separator to electrolyte
Wetability and guarantor's fluidity, are conducive to the fast transferring of lithium ion in charge and discharge process, improve the high rate performance of lithium ion battery
And cycle life；Close but unsound tridimensional network improves the heat resistance of lithium ion battery separator, puncture strength, energy
Inside lithium ion cell short circuit problem caused by effectivelying prevent dust, lithium dendrite arm etc., improves the safety of lithium ion battery；This
Outside, alumina electrochemical performance is stablized, and can improve the chemical property of lithium ion battery, and aluminium oxide ceramics powder after modified
Body surface face has good hydrophobic structure, ensure that outside the advantage with alumina coated diaphragm also with prevent aluminium oxide every
The water absorption issue of film greatly improves the stability of aluminium oxide ceramics coating diaphragm.
Description of the drawings
Fig. 1 is the SEM comparison diagrams before and after alumina ceramic powder hydrophobically modified in the embodiment of the present invention 1；
Fig. 2 is the hydrophobic angle comparison diagram before and after alumina ceramic powder hydrophobically modified in the embodiment of the present invention 1；
Fig. 3 is the XRD comparison diagrams before and after alumina ceramic powder hydrophobically modified in the embodiment of the present invention 1.
Specific implementation mode
In the following, technical scheme of the present invention is described in detail by specific embodiment.
Embodiment 1
A kind of preparation method of the lithium ion battery separator of high stable hydrophobic ceramic coating proposed by the present invention, including it is following
Step：
1) it weighs and is uniformly mixed in 1g alumina ceramic powders addition 25mL normal heptanes, add 5mL dimethyl dichlorosilane (DMCS)s
With 5mL dimethyldichlorosilanes, 30min is stirred at room temperature, and normal heptane volatilizees completely, obtains blend sample；
2) blend sample is put into horizontal pipe stove to lead to after ammonia 5min and is pyrolyzed 2h at a temperature of 500 DEG C, dried
The alumina ceramic powder by hydrophobically modified can be obtained；
3) modified alumina ceramic powder is distributed in deionized water, stirs 0.5h；With the aluminium oxide of hydrophobically modified
On the basis of quality, 5% polyvinylpyrrolidone and 0.5% sodium cellulose glycolate is added, is divided in advance using dispersion machine
It dissipates, rotating speed 500r/min；Then it reuses nano-level grinder to be ground, zirconium bead diameter is 0.4-0.6 μm, and grinding rotating speed is
1000r/min；5% binder GR401 is added, is disperseed using dispersion machine, rotating speed is 500r/min to get modified oxidized
Aluminium ceramic slurry；
4) scattered ceramic slurry is coated on the surface of ready lithium ion battery separator, coating speed is
30m/min, drying, baking temperature are divided into 4th area, are followed successively by 91-100 DEG C, 91-100 DEG C, 91-100 DEG C and 81-90 DEG C to get height
Stablize the lithium ion battery separator of hydrophobic ceramic coating.
To carrying out performance detection before and after alumina ceramic powder hydrophobically modified.As can be seen from Figure 1 the oxidation after modifying
There are many nanometers of little particles in the surface of alumina particles；From figure 2 it can be seen that modified alumina ceramic powder is by hydrophilic
Sex reversal is hydrophobicity, and hydrophobic angle is~110o；The phase of alumina powder is not generated after modification modification as can be seen from Figure 3
It influences, does not interfere with the property of aluminum oxide coating layer itself.
Embodiment 2
A kind of preparation method of the lithium ion battery separator of high stable hydrophobic ceramic coating proposed by the present invention, including it is following
Step：
1) it weighs and is uniformly mixed in 1g alumina ceramic powders addition 25mL normal heptanes, add 5mL dimethyl dichlorosilane (DMCS)s,
30min is stirred at room temperature, and normal heptane volatilizees completely, obtains blend sample；
2) blend sample is put into horizontal pipe stove to lead to after ammonia 5min and is pyrolyzed 2h at a temperature of 500 DEG C, dried
The alumina ceramic powder by hydrophobically modified can be obtained；
3) modified alumina ceramic powder is distributed in deionized water, stirs 0.5h；With the aluminium oxide of hydrophobically modified
On the basis of quality, 5% polyvinylpyrrolidone and 0.5% sodium cellulose glycolate is added, is divided in advance using dispersion machine
It dissipates, rotating speed 500r/min；Then it reuses nano-level grinder to be ground, zirconium pearl is 0.4-0.6 μm, rotating speed 1000r/
min；After 5% binder GR401 is added, disperseed using dispersion machine, rotating speed be 500r/min to get modified aluminas ceramics
Slurry；
4) scattered ceramic slurry is coated on the surface of ready lithium ion battery separator, coating speed is
10m/min, drying, baking temperature are divided into 8th area, are followed successively by 71-80 DEG C, 81-90 DEG C, 91-100 DEG C, 91-100 DEG C, 91-100
DEG C, 81-90 DEG C, 71-80 DEG C and 61-70 DEG C to get the coating of high stable hydrophobic ceramic lithium ion battery separator.
Embodiment 3
A kind of preparation method of the lithium ion battery separator of high stable hydrophobic ceramic coating proposed by the present invention, including it is following
Step：
1) it weighs in 1g alumina ceramic powders addition 25mL benzene and forms mixed solution, add 3mL dimethyl dichlorosilane (DMCS)s
With 3mL dimethyldichlorosilanes, 30min is stirred at room temperature, and benzene volatilizees completely, obtains blend sample；
2) blend sample is put into horizontal pipe stove to lead to after ammonia 5min and is pyrolyzed 2h at a temperature of 500 DEG C, dried
The alumina ceramic powder by hydrophobically modified can be obtained；
3) it will be distributed in deionized water by the alumina ceramic powder of hydrophobically modified, stir 0.5h；With hydrophobically modified
Quality of alumina on the basis of, 5% polyvinylpyrrolidone and 0.3% sodium cellulose glycolate is added, using dispersion machine into
Pre-dispersed, the rotating speed 1000r/min of row；Then it reuses nano-level grinder to be ground, zirconium pearl is 0.4-0.6 μm, and rotating speed is
2000r/min；After 5% binder GR405 is added, disperseed using dispersion machine, rotating speed be 800r/min to get modified oxidized
Aluminium ceramic slurry；
4) scattered ceramic slurry is coated on the surface of ready lithium ion battery separator, coating speed is
40m/min, drying, baking temperature are divided into 6th area, are followed successively by 81-90 DEG C, 91-100 DEG C, 91-100 DEG C, 91-100 DEG C, 81-90 DEG C
With the 71-80 DEG C of lithium ion battery separator to get the coating of high stable hydrophobic ceramic.
Embodiment 4
A kind of preparation method of the lithium ion battery separator of high stable hydrophobic ceramic coating proposed by the present invention, including it is following
Step：
1) it weighs and is uniformly mixed in 1g alumina ceramic powders addition 25mL normal heptanes, add 4mL dimethyl dichloro silicon
Alkane stirs 30min at room temperature, and normal heptane volatilizees completely, obtains blend sample；
2) blend sample is put into horizontal pipe stove to lead to after ammonia 5min and is pyrolyzed 1h at a temperature of 800 DEG C, dried
The alumina ceramic powder by hydrophobically modified can be obtained；
3) it will be distributed in deionized water by the alumina ceramic powder of hydrophobically modified, stir 1h；With hydrophobically modified
On the basis of quality of alumina, 5% polyvinylpyrrolidone and 0.8% sodium cellulose glycolate is added, using dispersion machine into
Pre-dispersed, the rotating speed 1500r/min of row；Then it reuses nano-level grinder to be ground, zirconium pearl is 0.4-0.6 μm, and rotating speed is
600r/min；After 10% binder GR405 is added, disperseed using dispersion machine, rotating speed is 1000r/min to get modified oxygen
Change aluminium ceramic slurry；
4) scattered ceramic slurry is coated on the surface of ready lithium ion battery separator, coating speed is
40m/min, drying, baking temperature are divided into 6th area, are followed successively by 81-90 DEG C, 91-100 DEG C, 91-100 DEG C, 91-100 DEG C, 81-90 DEG C
With the 71-80 DEG C of lithium ion battery separator to get the coating of high stable hydrophobic ceramic.
Embodiment 5
A kind of preparation method of the lithium ion battery separator of high stable hydrophobic ceramic coating proposed by the present invention, including it is following
Step：
1) it weighs and is uniformly mixed in 1g alumina ceramic powders addition 25mL normal heptanes, add 3mL dimethyl dichlorosilane (DMCS)s,
30min is stirred at room temperature, and normal heptane volatilizees completely, obtains blend sample；
2) blend sample is put into horizontal pipe stove to lead to after ammonia 5min and is pyrolyzed 3h at a temperature of 300 DEG C, dried
The alumina ceramic powder by hydrophobically modified can be obtained；
3) it will be distributed in deionized water by the alumina ceramic powder of hydrophobically modified, stir 0.5h；With hydrophobically modified
Quality of alumina on the basis of, 5% polyvinylpyrrolidone and 0.5% sodium cellulose glycolate is added, uses dispersion machine
Carry out pre-dispersed, rotating speed 600r/min；Then it reuses nano-level grinder to be ground, zirconium pearl is 0.1-0.2 μm, and rotating speed is
1000r/min；After 8% binder GR405 is added, disperseed using dispersion machine, rotating speed be 500r/min to get modified oxidized
Aluminium ceramic slurry；
4) scattered ceramic slurry is coated on the surface of ready lithium ion battery separator, coating speed is
40m/min, drying, baking temperature are divided into 8th area, are followed successively by 71-80 DEG C, 81-90 DEG C, 91-100 DEG C, 91-100 DEG C, 91-100
DEG C, 81-90 DEG C, 71-80 DEG C and 61-70 DEG C to get the coating of high stable hydrophobic ceramic lithium ion battery separator.
Embodiment 6
A kind of preparation method of the lithium ion battery separator of high stable hydrophobic ceramic coating proposed by the present invention, including it is following
Step：
1) it weighs and is uniformly mixed in 1g alumina ceramic powders addition 20mL normal heptanes, add 2mL dimethyl dichloro silicon
Alkane and 1mL dimethyl dichlorosilane (DMCS)s, stir 30min at room temperature, and normal heptane volatilizees completely, obtains blend sample；
2) blend sample is put into horizontal pipe stove to lead to after ammonia 5min and is pyrolyzed 2h at a temperature of 600 DEG C, dried
The alumina ceramic powder by hydrophobically modified can be obtained；
3) it will be distributed in deionized water by the alumina ceramic powder of hydrophobically modified, stir 0.5h；With hydrophobically modified
Quality of alumina on the basis of, 5% polyvinylpyrrolidone and 0.5% sodium cellulose glycolate is added, uses dispersion machine
Carry out pre-dispersed, rotating speed 600r/min；Then it reuses nano-level grinder to be ground, zirconium pearl is 0.1-0.2 μm, and rotating speed is
2500r/min；After 5% binder PVA is added, disperseed using dispersion machine, rotating speed be 500r/min to get modified aluminas
Ceramic slurry；
4) scattered ceramic slurry is coated on the surface of ready lithium ion battery separator and is dried, coating speed
For 50m/min, baking temperature is divided into 8th area, be followed successively by 71-80 DEG C, 81-90 DEG C, 91-100 DEG C, 91-100 DEG C, 91-100 DEG C,
81-90 DEG C, the 71-80 DEG C and 61-70 DEG C lithium ion battery separator to get the coating of high stable hydrophobic ceramic.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of preparation method of the lithium ion battery separator of high stable hydrophobic ceramic coating, which is characterized in that including following step
Suddenly：
S1, alumina ceramic powder is mixed with chlorosilane, organic solvent, stirring is hydrolyzed into organic solvent volatilization completely, obtains
Mixture；
S2, it mixture is placed in ammonia atmosphere carries out pyrolysis processing, obtain the alumina ceramic powder of hydrophobically modified；
S3, the alumina ceramic powder of hydrophobically modified is distributed in water, thereto be added polyethylene of dispersing agent pyrrolidones and
Sodium cellulose glycolate, pre-dispersed, then milled processed, then binder is added thereto, continue the ceramics for disperseing to be coated
Slurry；
S4, the surface that ceramic slurry is coated in lithium ion battery separator, dry the lithium that coats to get high stable hydrophobic ceramic from
Sub- battery diaphragm.
2. the preparation method of the lithium ion battery separator of high stable hydrophobic ceramic coating according to claim 1, feature
It is, in the S1, the quality volume volume ratio of alumina ceramic powder and chlorosilane, organic solvent is 1：(3-10)mL：
(10-50)mL。
3. the preparation method of the lithium ion battery separator of high stable hydrophobic ceramic coating according to claim 1 or 2, special
Sign is, in the S1, organic solvent is one or more of normal heptane, hexamethylene, benzene and toluene；Preferably, the chlorine
Silane is or mixtures thereof dimethyl dichlorosilane (DMCS) or dimethyldichlorosilane.
4. the preparation method of the lithium ion battery separator of high stable hydrophobic ceramic coating according to claim 1, feature
It is, in the S2, the temperature of pyrolysis processing is 300-800 DEG C, time 1-3h.
5. the preparation method of the lithium ion battery separator of high stable hydrophobic ceramic coating according to claim 1, feature
It is, in the S3, the alumina ceramic powder of hydrophobically modified is dispersed with stirring in water, mixing time 0.5-1h.
6. the preparation method of the lithium ion battery separator of high stable hydrophobic ceramic coating according to claim 1, feature
It is, in the S3, polyethylene of dispersing agent pyrrolidones and sodium cellulose glycolate is added thereto, uses dispersion machine with 500-
The rotating speed of 1500r/min is pre-dispersed, then milled processed, then binder is added thereto, uses dispersion machine with 500-1000r/
The rotating speed of min continues the ceramic slurry for disperseing to be coated.
7. the preparation method of the lithium ion battery separator of high stable hydrophobic ceramic coating according to claim 1 or 6, special
Sign is, in the S3, in terms of the quality of the alumina ceramic powder after hydrophobically modified, the additive amount of sodium cellulose glycolate is
0.3-0.8%.
8. the preparation method of the lithium ion battery separator of high stable hydrophobic ceramic coating according to claim 1 or 6, special
Sign is, in the S3, is ground using nano-level grinder, and nano-level grinder grinding is 0.1- with the grain size of zirconium pearl
0.6 μm, grinding rotating speed is 600-2500r/min.
9. the preparation method of the lithium ion battery separator of high stable hydrophobic ceramic coating according to claim 1 or 6, special
Sign is, in the S3, binder is acrylic adhesive, is one kind in K702, GR401, GR405, PVA；Preferably,
In terms of the quality of the alumina ceramic powder after hydrophobically modified, the additive amount of binder is 5-10%.
10. the preparation method of the lithium ion battery separator of high stable hydrophobic ceramic coating according to claim 1, feature
It is, in the S4, ceramic slurry is coated uniformly on to the surface of lithium ion battery separator using coating machine, coating speed is
10-50m/min。
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| CN108807805A (en) * | 2018-08-23 | 2018-11-13 | 河北金力新能源科技股份有限公司 | A kind of battery diaphragm and preparation method thereof |
| CN109768205A (en) * | 2019-01-28 | 2019-05-17 | 中国科学院兰州化学物理研究所 | A kind of preparation method of super-hydrophobic/super close electrolyte lithium battery diaphragm |
| CN110364664A (en) * | 2019-07-18 | 2019-10-22 | 安徽新衡新材料科技有限公司 | A kind of Water based metal ion secondary battery diaphragm and its preparation method and application |
| CN110600660A (en) * | 2019-08-16 | 2019-12-20 | 东莞赣锋电子有限公司 | Preparation method of surface modified alumina ceramic coating diaphragm |
| CN111584799A (en) * | 2019-12-20 | 2020-08-25 | 湖南高瑞电源材料有限公司 | Preparation method of lithium battery coating diaphragm |
| CN111969161A (en) * | 2020-07-07 | 2020-11-20 | 佛山市盈博莱科技股份有限公司 | Mesoporous alumina ceramic coating diaphragm and preparation method thereof |
| CN112151728A (en) * | 2019-06-28 | 2020-12-29 | 比亚迪股份有限公司 | Lithium ion battery composite diaphragm, preparation method thereof and lithium ion battery |
| CN113013552A (en) * | 2021-03-18 | 2021-06-22 | 中国科学技术大学 | Battery diaphragm and preparation method thereof |
| CN113178658A (en) * | 2021-03-23 | 2021-07-27 | 河北金力新能源科技股份有限公司 | Lithium battery diaphragm slurry, high liquid absorption rate diaphragm and preparation method and application thereof |
| CN114361708A (en) * | 2022-01-05 | 2022-04-15 | 池州精研新能源科技有限公司 | Environment-friendly water-based battery and preparation method thereof |
| WO2023009594A1 (en) * | 2021-07-27 | 2023-02-02 | Nant Holdings Ip, Llc | Graphene nanoplatelet batteries, apparatus, and compositions |
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Application publication date: 20180727 |