CN108649174A - A kind of multi-functional absorbent coating and the diaphragm using this coating - Google Patents
A kind of multi-functional absorbent coating and the diaphragm using this coating Download PDFInfo
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- CN108649174A CN108649174A CN201810397113.8A CN201810397113A CN108649174A CN 108649174 A CN108649174 A CN 108649174A CN 201810397113 A CN201810397113 A CN 201810397113A CN 108649174 A CN108649174 A CN 108649174A
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- metal salt
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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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D109/00—Coating compositions based on homopolymers or copolymers of conjugated diene hydrocarbons
- C09D109/06—Copolymers with styrene
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C09D127/16—Homopolymers or copolymers of vinylidene fluoride
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/327—Aluminium phosphate
-
- 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 kind of multi-functional absorbent coating and the diaphragms of this coating of use, a kind of functional coating prepared using sorbing material involved in invention, sorbing material in coating is mainly the mixture of metal salt or metal salt and other inorganic, metal oxides, and the BET specific surface area of selected metal salt is higher than 15m2/g.Sorbing material and solvent, binder, dispersant, prepare coating slurry, and the coating for having adsorption function is formed coated in membrane surface.After surface coats the diaphragm assembly battery of absorbent coating, for battery after chemical conversion side reaction generates during shelving or use organic gas and inorganic gas, and the inorganic metal ion of tertiary cathode material dissolution is adsorbed, and has the effect for inhibiting battery tympanites and performance degradation to a certain degree.
Description
Technical field
The present invention relates to technical field of lithium ion, and in particular to a kind of multi-functional absorbent coating and uses this coating
Diaphragm.
Background technology
Lithium ion battery has higher energy density, especially power battery.Ensure battery security, be battery production and
Key in.After lithium ion battery chemical conversion encapsulation, aerogenesis during shelving and use and digestion of metallic ion deposition
Problem is one of the principal element for influencing cell safety and performance.
Electrolyte itself and it is dry after micro-moisture contained by battery core, shelved in battery and gradual release hair during use
Raw side reaction, moisture react with electrolyte lithium hexafluoro phosphate the HF generated not only can corrosive aluminum foil, can also pair be instead in catalytic cell
The generation answered causes battery producing gas, consumes lithium ion, influences cell safety and performance.
Due to requiring to improve to battery energy density, nickelic ternary material battery yield increases year by year.Ternary under high voltage
Material metal Ion release problem always exists, and the raising of nickel content can increase the dissolution of metal ion, the metal of dissolution from
Son influences the stability of SEI films in cathode deposition, causes battery producing gas and performance degradation.
Therefore the multi-functional absorption that exploitation inhibits the pernicious gas that battery generates further to be reacted with dissolution metal ion applies
Layer and the diaphragm for coating this coating are improving battery security and applicability, and promote have important meaning in terms of lithium battery development
Justice.
Invention content
For the limitation for making up the deficiencies in the prior art and using, a kind of multi-functional absorbent coating of present invention offer and use
The diaphragm of this coating, innovates the selection being in sorbing material in of the invention, the metal salt in sorbing material is predominantly certain
The barium titanate and aluminum phosphate of ratio, barium titanate and aluminum phosphate can effectively adsorb the HF that side reaction generates.Aluminum phosphate pair three
The metal ion dissolved out in first material, especially nickel ion have preferable adsorption capacity；The dioxy that barium titanate generates side reaction
Changing carbon has good adsorptivity.In addition, the barium titanate and aluminum phosphate selected have higher specific surface area (it is required that specific surface area
More than 15m2/ g), the organic gas generated to side reaction also has certain receiving and adsorption capacity.
To achieve the above object, the technical solution adopted in the present invention is：
A kind of multi-functional absorbent coating formed on battery diaphragm base material, including functional inorganic particle, the function
Property inorganic particulate include the metal salt that there is adsorption function to gas and/or metal ion.
Further, functional inorganic particle further includes inorganic, metal oxide.
Further, the BET specific surface area of metal salt is higher than 15m2/g。
Further, metal salt is the mixture of barium titanate and aluminum phosphate, and the mass ratio of the barium titanate and aluminum phosphate is 1
~9:1.
Further, the mass ratio of metal salt and inorganic, metal oxide is 2.3~9:1.
Further, inorganic, metal oxide grain size D90 is less than 200nm；Inorganic, metal oxide is magnesia, oxidation
One kind in zirconium, titanium oxide, aluminium oxide, boehmite or it is arbitrary two or more with the mixture of arbitrary proportion.
Further, the material of battery diaphragm base material is polyethylene, polypropylene, polyimides, polyamide, cellulose, PET
Any one in plastics, Kynoar, aramid fiber, spandex.
A kind of battery diaphragm, surface are coated with multi-functional absorbent coating as described above, and coating layer thickness is 2~4 μm.
The preparation method of battery diaphragm as described above, including will the solvent containing functional inorganic particle and with its phase
The slurry for the binder composition matched is coated in battery diaphragm substrate surface and drying in a manner of micro- intaglio plate coating.
Further, above-mentioned slurry further includes dispersant.
Further, for the different systems of water/oil, the binder to match with dicyandiamide solution is mixed with certain proportion
The mixture of metal salt or metal salt and inorganic, metal oxide is added in required solvent, and slurry is made after high-speed stirred.It closes
Suitable binder ensures that coating has good adhesive force in membrane surface, will not fall off failure.Slurry solid content may be designed as
20-45%.
Technique effect obtained by the present invention has：1) it is formed on battery diaphragm comprising to gas and/or metal ion tool
There is the coating of the metal salt of adsorption function, HF, the CO that can effectively adsorb and inhibit battery to generate2Equal pernicious gases, Er Qieke
Further reaction occurs with the metal ion of dissolution, deposition of the metal ion in cathode of dissolution is reduced, and then reduce SEI films
Stability, ensure battery use safely for a long time.2) barium titanate with high specific surface area mixed with certain proportion
It can increase the scope of application of the coating to different batteries as metal salt with aluminum phosphate, increase to pernicious gas and released ion
Receiving and adsorption capacity, it can also be ensured that the thermal stability of coating.3) inorganic, metal oxide of appropriate particle size is further added,
On the one hand can increase adsorption capacity, on the other hand act synergistically with metal salts such as barium titanate, aluminum phosphates, guarantee battery every
The good chemical stability of film, lithium ion permeability, thermal stability and mechanical strength.4) battery diaphragm assembly electricity obtained is invented
Chi Hou, for the organic gas that side reaction generates during shelving or use of battery after chemical conversion and inorganic gas and ternary
The inorganic metal ion of positive electrode dissolution is adsorbed, and has the effect for inhibiting battery tympanites and performance degradation to a certain degree,
Also there is preferable absorbency, it is ensured that battery safely and effectively uses for a long time.
Specific implementation mode
The present invention is described in further detail with reference to embodiment：
Embodiment 1：
Metal salt (barium titanate and aluminum phosphate mass ratio 1:1) 45.25g, the wherein BET specific surface area of barium titanate are 16m2/
The BET specific surface area of g, aluminum phosphate are 20m2/ g, dispersant are 2% carboxymethylcellulose sodium solution 37.5g, binder butylbenzene rubber
Latex solution (solid content 50%) 8g, 34.25g deionized water is solvent, designs solid content 40%, coating slurry is prepared after mixing.
Slurry is coated in PP substrate surfaces by micro- plate gravure coating method, forms multi-functional absorbent coating and coating diaphragm after dry,
4 μm of coating layer thickness.
Embodiment 2
Metal salt (barium titanate and aluminum phosphate mass ratio 1:1) 45.25g, the wherein BET specific surface area of barium titanate are 16m2/
The BET specific surface area of g, aluminum phosphate are 20m2/ g, dispersant are 2% carboxymethylcellulose sodium solution 37.5g, binder acrylic acid
Ester lotion (solid content 50%) 8g, 34.25g deionized water is solvent, designs solid content 40%, coating slurry is prepared after mixing.
Slurry is coated in PE substrate surfaces by micro- plate gravure coating method, forms multi-functional absorbent coating and coating diaphragm after dry,
4 μm of coating layer thickness.
Embodiment 3
Metal salt (barium titanate and aluminum phosphate mass ratio 1:1) 31.675g, the wherein BET specific surface area of barium titanate are 16m2/
The BET specific surface area of g, aluminum phosphate are 20m2The grain size D90 of/g, nano zircite 13.575g, nano zircite are less than 200nm
And average grain diameter is 50nm, dispersant is 2% carboxymethylcellulose sodium solution 37.5g, binder SBR emulsion (solid content
50%) 8g, 52.1g deionized water are solvent, design solid content 35%, coating slurry is prepared after mixing.Pass through micro- intaglio plate coating
Slurry is coated in PP substrate surfaces by mode, and multi-functional absorbent coating and coating diaphragm, 3 μm of coating layer thickness are formed after dry.
Embodiment 4
Metal salt (barium titanate and aluminum phosphate mass ratio 1:1) 31.675g, the wherein BET specific surface area of barium titanate are 16m2/
The BET specific surface area of g, aluminum phosphate are 20m2The grain size D90 of/g, nano-titanium oxide 13.575g, nano-titanium oxide are less than 200nm
And average grain diameter is 50nm, dispersant is 2% carboxymethylcellulose sodium solution 37.5g, binder acrylic acid ester emulsion (solid content
50%) 8g, 75.9g deionized water are solvent, design solid content 30%, coating slurry is prepared after mixing.Pass through micro- intaglio plate coating
Slurry is coated in PE substrate surfaces by mode, and multi-functional absorbent coating and coating diaphragm, 2 μm of coating layer thickness are formed after dry.
Embodiment 5
Metal salt (barium titanate and aluminum phosphate mass ratio 1:1) 46g, the wherein BET specific surface area of barium titanate are 16m2/ g, phosphorus
The BET specific surface area of sour aluminium is 20m2/ g, binder are Kynoar powder 4g, 92.8g N-methyl pyrrolidinone solvent, design
Solid content 35% prepares coating slurry after mixing.Slurry is coated in PP substrate surfaces by micro- plate gravure coating method, after dry
Form multi-functional absorbent coating and coating diaphragm, 3 μm of coating layer thickness.
Embodiment 6
Metal salt (barium titanate and aluminum phosphate mass ratio 1:1) 36.8g, the wherein BET specific surface area of barium titanate are 16m2/ g,
The BET specific surface area of aluminum phosphate is 20m2The grain size D90 of/g, nano magnesia 9.2g, nano magnesia are less than 200nm and are averaged
Grain size is 50nm, and binder is Kynoar powder 4g, 92.8g N-methyl pyrrolidinone solvent, designs solid content 35%, mixing
After prepare coating slurry.Slurry is coated in PE substrate surfaces by micro- plate gravure coating method, multi-functional absorption is formed after dry
Coating and coating diaphragm, 3 μm of coating layer thickness.
Embodiment 7
Metal salt (barium titanate and aluminum phosphate mass ratio 9:1) 36.8g, the wherein BET specific surface area of barium titanate are 16m2/ g,
The BET specific surface area of aluminum phosphate is 20m2The grain size D90 of/g, nano magnesia 9.2g, nano magnesia are less than 200nm and are averaged
Grain size is 50nm, and binder is Kynoar powder 4g, 92.8g N-methyl pyrrolidinone solvent, designs solid content 35%, mixing
After prepare coating slurry.Slurry is coated in PE substrate surfaces by micro- plate gravure coating method, multi-functional absorption is formed after dry
Coating and coating diaphragm, 3 μm of coating layer thickness.
Embodiment 8
Metal salt (barium titanate and aluminum phosphate mass ratio 5:1) 41.4g, the wherein BET specific surface area of barium titanate are 16m2/ g,
The BET specific surface area of aluminum phosphate is 20m2The grain size D90 of/g, nano magnesia 4.6g, nano magnesia are less than 200nm and are averaged
Grain size is 50nm, and binder is Kynoar powder 4g, 92.8g N-methyl pyrrolidinone solvent, designs solid content 35%, mixing
After prepare coating slurry.Slurry is coated in PE substrate surfaces by micro- plate gravure coating method, multi-functional absorption is formed after dry
Coating and coating diaphragm, 3 μm of coating layer thickness.
Effect example
Battery makes and test process：
5Ah soft-package battery trial-productions are carried out to different type diaphragm, it is ternary material, cathode master that cell positive material, which is 622,
Material is artificial graphite.Prepared by battery core uses lamination process, aluminum plastic film encapsulation.After Battery formation constant volume, cell thickness is recorded, is carried out
25 DEG C of@1C/1C normal temperature circulations, when cycle-index 700 times, calculate battery capacity conservation rate, and record cell thickness.Specific test
It the results are shown in Table 1.
Table 1
| Battery types | Diaphragm type | Diaphragm specification | Normal temperature circulation | Capacity retention ratio | Cell thickness changes |
| 5Ah ternary Soft Rolls | Embodiment 1 | PP 12+4 | 700 times | 93.2% | Increase 0.3mm |
| 5Ah ternary Soft Rolls | Embodiment 2 | PE 12+4 | 700 times | 93.4% | Increase 0.3mm |
| 5Ah ternary Soft Rolls | Embodiment 6 | PE 12+3 | 700 times | 93.1% | Increase 0.4mm |
| 5Ah ternary Soft Rolls | Customary commercial film | PE 12+4 | 700 times | 91.7% | Increase 0.8mm |
| 5Ah ternary Soft Rolls | Customary commercial film | PP 12+4 | 700 times | 91.3% | Increase 0.8mm |
Claims (10)
1. a kind of multi-functional absorbent coating, it is characterised in that：The coating is formed on battery diaphragm base material, and the coating includes
Functional inorganic particle, the functional inorganic particle include the metal salt for having adsorption function to gas and/or metal ion.
2. multi-functional absorbent coating according to claim 1, which is characterized in that the functional inorganic particle further includes nothing
Machine metal oxide.
3. multi-functional absorbent coating according to claim 1 or 2, which is characterized in that the BET specific surface area of the metal salt
Higher than 15m2/g。
4. multi-functional absorbent coating according to claim 1 or 2, which is characterized in that the metal salt is barium titanate and phosphorus
The mass ratio of the mixture of sour aluminium, the barium titanate and aluminum phosphate is 1~9:1.
5. multi-functional absorbent coating according to claim 2, which is characterized in that the metal salt and inorganic, metal oxide
Mass ratio be 2.3~9:1.
6. multi-functional absorbent coating according to claim 2, which is characterized in that the inorganic, metal oxide grain size D90
Less than 200nm；The inorganic, metal oxide is magnesia, zirconium oxide, titanium oxide, aluminium oxide, one kind in boehmite or appoints
Two or more anticipate with the mixture of arbitrary proportion.
7. multi-functional absorbent coating according to claim 1, which is characterized in that the material of the battery diaphragm base material is poly-
Any one in ethylene, polypropylene, polyimides, polyamide, cellulose, PET plastic, Kynoar, aramid fiber, spandex.
8. a kind of battery diaphragm, it is characterised in that：The membrane surface coating is just like the multifunctional ceiling described in claim 1 to 7
Attached coating, the coating layer thickness are 2~4 μm.
9. the preparation method of battery diaphragm as claimed in claim 8, it is characterised in that：The method includes containing functionality
The solid slurry containing for 20~45% of the solvent of inorganic particulate and matched binder composition is with the side of micro- intaglio plate coating
Formula is coated in battery diaphragm surface and drying.
10. the preparation method of battery diaphragm according to claim 9, which is characterized in that the slurry further includes dispersant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810397113.8A CN108649174A (en) | 2018-04-28 | 2018-04-28 | A kind of multi-functional absorbent coating and the diaphragm using this coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810397113.8A CN108649174A (en) | 2018-04-28 | 2018-04-28 | A kind of multi-functional absorbent coating and the diaphragm using this coating |
Publications (1)
| Publication Number | Publication Date |
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| CN108649174A true CN108649174A (en) | 2018-10-12 |
Family
ID=63748438
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| CN201810397113.8A Pending CN108649174A (en) | 2018-04-28 | 2018-04-28 | A kind of multi-functional absorbent coating and the diaphragm using this coating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111584798A (en) * | 2019-09-11 | 2020-08-25 | 河北金力新能源科技股份有限公司 | Lithium battery diaphragm slurry, diaphragm prepared from lithium battery diaphragm slurry and application of lithium battery diaphragm slurry |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101459232A (en) * | 2007-12-11 | 2009-06-17 | 三星Sdi株式会社 | Separator for non-aqueous rechargeable lithium battery |
| CN103811702A (en) * | 2014-02-12 | 2014-05-21 | 佛山市金辉高科光电材料有限公司 | Novel ceramic coating polyolefin composite film and preparation method thereof |
| CN106450107A (en) * | 2016-10-24 | 2017-02-22 | 天津工业大学 | Porous lithium battery membrane with inorganic ceramic particles as body and preparation method of membrane |
-
2018
- 2018-04-28 CN CN201810397113.8A patent/CN108649174A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101459232A (en) * | 2007-12-11 | 2009-06-17 | 三星Sdi株式会社 | Separator for non-aqueous rechargeable lithium battery |
| CN103811702A (en) * | 2014-02-12 | 2014-05-21 | 佛山市金辉高科光电材料有限公司 | Novel ceramic coating polyolefin composite film and preparation method thereof |
| CN106450107A (en) * | 2016-10-24 | 2017-02-22 | 天津工业大学 | Porous lithium battery membrane with inorganic ceramic particles as body and preparation method of membrane |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111584798A (en) * | 2019-09-11 | 2020-08-25 | 河北金力新能源科技股份有限公司 | Lithium battery diaphragm slurry, diaphragm prepared from lithium battery diaphragm slurry and application of lithium battery diaphragm slurry |
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