CN111769239A - Heat-resistant high-strength composite lithium battery diaphragm and preparation method and application thereof - Google Patents
Heat-resistant high-strength composite lithium battery diaphragm and preparation method and application thereof Download PDFInfo
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- CN111769239A CN111769239A CN201910262058.6A CN201910262058A CN111769239A CN 111769239 A CN111769239 A CN 111769239A CN 201910262058 A CN201910262058 A CN 201910262058A CN 111769239 A CN111769239 A CN 111769239A
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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
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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
Abstract
The invention discloses a heat-resistant high-strength composite lithium battery diaphragm and a preparation method and application thereof, wherein the preparation method comprises the following steps: mixing water and a dispersing agent, adding ceramic powder, stirring, grinding, adding an adhesive after grinding, mixing uniformly to obtain ceramic coating slurry, coating the ceramic coating slurry on one surface of a PE (polyethylene) film by using a coating machine, and drying to obtain a ceramic modified diaphragm; and (3) bonding one side of the coating of the ceramic modified diaphragm with the poly (p-phenylene benzobisoxazole) fiber membrane through an adhesive, and drying to obtain the heat-resistant high-strength composite lithium battery diaphragm. The preparation method can improve the heat resistance and the strength of the lithium battery diaphragm, and the poly-p-phenylene benzobisoxazole and the ceramic modified diaphragm are compounded, so that the aim of improving the heat resistance and the strength of the diaphragm is fulfilled.
Description
Technical Field
The invention belongs to the technical field of lithium battery diaphragms, and particularly relates to a heat-resistant high-strength composite lithium battery diaphragm and a preparation method and application thereof.
Background
With the economic development of the society as the most important power element, the development speed and quality of the whole new energy industry are directly affected by the development technical level, the energy density of the lithium battery is higher and higher by cash, the safety performance of the lithium battery is further higher, and the diaphragm serving as an important component of the lithium battery also has certain influence on the safety of the lithium battery.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a preparation method of a heat-resistant high-strength composite lithium battery diaphragm, and the preparation method is characterized in that a poly-p-phenylene benzobisoxazole fiber film and a ceramic modified diaphragm are compounded, so that the aims of improving the heat resistance and the strength of the diaphragm are fulfilled, and the safety of a high-energy density lithium battery is improved.
Another object of the present invention is to provide a heat-resistant high-strength composite lithium battery separator obtained by the above preparation method.
The purpose of the invention is realized by the following technical scheme.
A preparation method of a heat-resistant high-strength composite lithium battery diaphragm comprises the following steps:
1) preparing ceramic coating slurry: mixing 51-61 parts by mass of water and 1-2 parts by mass of a dispersing agent, adding 30-40 parts by mass of ceramic powder, stirring, grinding, adding 7-8 parts by mass of an adhesive after grinding, and mixing uniformly to obtain ceramic coating slurry, wherein the adhesive is polyacrylate or Styrene Butadiene Rubber (SBR), and the dispersing agent is ammonium salt or sodium salt;
in the step 1), the water and the dispersing agent are mixed for 10-20 min in a planetary stirring device, and the stirring speed is 1500-3100 r/min.
In the step 1), ultrasonic waves with the frequency of 9-13 kHz are applied in the mixing process after the adhesive is added.
In the step 1), the ceramic powder is made of alumina, silica, zirconia or boehmite.
In the step 1), the ceramic powder has a particle size D50 of 0.6 to 1.0 μm.
2) Coating the ceramic coating slurry obtained in the step 1) on one surface of a PE film by using a coating machine to obtain a coating on the PE film, and drying to obtain a ceramic modified diaphragm;
in the step 2), the coating speed of the coating machine is 31-51 m/min.
In the step 2), the thickness of the coating is 1-2 μm.
In the step 2), the drying temperature is 45-65 ℃.
3) And (3) bonding one side of the coating of the ceramic modified diaphragm obtained in the step 2) with a poly (p-phenylene benzobisoxazole) fiber membrane through an adhesive, and drying to obtain the heat-resistant high-strength composite lithium battery diaphragm.
In the step 3), the ceramic modified diaphragm obtained in the step 2) is bonded with the poly-p-phenylene benzobisoxazole fiber film through a coating machine and an unwinding mechanism, wherein the ceramic modified diaphragm obtained in the step 2) is installed on the coating machine and used for coating an adhesive on one surface of a coating of the ceramic modified diaphragm, the poly-p-phenylene benzobisoxazole fiber film is installed on the unwinding mechanism, and the unwinding mechanism is arranged on one side of the coating machine so that the ceramic modified diaphragm coated with the adhesive is bonded with the poly-p-phenylene benzobisoxazole fiber film when running to the unwinding mechanism.
In the technical scheme, the bonding speed of the ceramic modified diaphragm and the poly-p-phenylene benzobisoxazole fiber film is 23-46 m/min.
In the step 3), the drying is carried out at 30-50 ℃.
The heat-resistant high-strength composite lithium battery diaphragm obtained by the preparation method.
The heat-resistant high-strength composite lithium battery diaphragm is applied to improving the heat resistance.
In the technical scheme, the longitudinal heat shrinkage rate is 0.9-1.1%, and the transverse heat shrinkage rate is 0.2-0.3%.
The application of the heat-resistant high-strength composite lithium battery diaphragm in improving the strength.
In the technical scheme, the transverse tensile strength is 1660-1730 Kgf/cm2The longitudinal tensile strength is 1820 to 1910 Kgf/cm2。
The invention has the beneficial effects that:
the preparation method can improve the heat resistance and the strength of the lithium battery diaphragm, the poly-p-phenylene benzobisoxazole is organic fiber with excellent mechanical property, thermal stability and flame retardance, the matrix of the poly-p-phenylene benzobisoxazole is a linear chain structure polymer, the poly-p-phenylene benzobisoxazole is not decomposed below 650 ℃, has ultrahigh strength and modulus, is an ideal heat-resistant and impact-resistant fiber material, and is compounded with the ceramic modified diaphragm, so that the aim of improving the heat resistance and the strength of the diaphragm is fulfilled, and the safety of the high-energy density lithium battery is improved.
Detailed Description
The technical scheme of the invention is further explained by combining specific examples.
The manufacturers and models of the equipment in the following examples are as follows:
planetary stirring equipment: good luck, HY-DLH 43L.
Coating machine: donghong DCL-1350
Unwinding mechanism: georgia G-FJ01
The raw material purchase sources in the following examples are as follows:
a poly-p-phenylene benzobisoxazole fiber film was purchased from eastern skimmite.
Ceramic powders are purchased from resident friends.
The water is pure water.
The PE films in the following examples were all 16 μm in thickness.
Example 1
A preparation method of a heat-resistant high-strength composite lithium battery diaphragm comprises the following steps:
1) preparing ceramic coating slurry: 51 parts by mass of water and 2 parts by mass of dispersing agent are mixed in a planetary stirring device for 20min, and the stirring speed is 2000 r/min. Adding 40 parts by weight of ceramic powder, stirring, grinding, adding 8 parts by weight of adhesive, mixing in a planetary stirring device for 15min to be uniform (stirring speed is 35r/min), and applying ultrasonic waves with frequency of 13kHz in the mixing process to obtain ceramic coating slurry, wherein the adhesive is polyacrylate and the dispersing agent is polyacrylamide; the ceramic powder is made of alumina, and the particle size of the ceramic powder is D50: 0.6-1.0 μm.
2) Coating the ceramic coating slurry obtained in the step 1) on one surface of a PE film by using a coating machine to obtain a coating with the thickness of 1.5 mu m on the PE film, and drawing the coating into a drying device by using a drawing roll to dry for 0.5min at 65 ℃ to obtain the ceramic modified diaphragm, wherein the coating speed of the coating machine is 31 m/min.
3) Bonding one side of the coating of the ceramic modified diaphragm obtained in the step 2) with a poly (p-phenylene-benzobisoxazole) fiber membrane through an adhesive, and specifically operating as follows: the ceramic modified diaphragm obtained in the step 2) is installed on a coating machine and used for coating an adhesive on one surface of a coating layer of the ceramic modified diaphragm, the poly-p-phenylene benzobisoxazole fiber film is installed on another unwinding mechanism, the unwinding mechanism is arranged on one side of the coating machine (the unwinding mechanism is located at a position 30cm right in front of a material box of the coating machine), so that the ceramic modified diaphragm coated with the adhesive is bonded with the poly-p-phenylene benzobisoxazole fiber film when running to the unwinding mechanism, and the bonding speed is 30 m/min.
And after the ceramic modified diaphragm is bonded with the poly-p-phenylene benzobisoxazole fiber film, the ceramic modified diaphragm is pulled by a traction roller to enter drying equipment to be dried for 0.5min at 35 ℃, and the heat-resistant high-strength composite lithium battery diaphragm is obtained.
Example 2
A preparation method of a heat-resistant high-strength composite lithium battery diaphragm comprises the following steps:
1) preparing ceramic coating slurry: and (3) mixing 61 parts by mass of water and 1 part by mass of a dispersing agent in a planetary stirring device for 10min, wherein the stirring speed is 1500 r/min. Adding 30 parts by weight of ceramic powder, stirring, grinding, adding 8 parts by weight of adhesive, mixing in a planetary stirring device for 10min to be uniform (stirring speed is 35r/min), and applying ultrasonic waves with frequency of 13kHz in the mixing process to obtain ceramic coating slurry, wherein the adhesive is polyacrylate and the dispersing agent is polyacrylamide; the material of the ceramic powder is boehmite, and the particle size of the ceramic powder is D50: 0.6-1.0 μm.
2) Coating the ceramic coating slurry obtained in the step 1) on one surface of a PE film by using a coating machine to obtain a coating with the thickness of 1 mu m on the PE film, and drawing the coating by a drawing roll into a drying device to dry for 12min at the temperature of 53 ℃ to obtain the ceramic modified diaphragm, wherein the coating speed of the coating machine is 31 m/min.
3) Bonding one side of the coating of the ceramic modified diaphragm obtained in the step 2) with a poly (p-phenylene-benzobisoxazole) fiber membrane through an adhesive, and specifically operating as follows: the ceramic modified diaphragm obtained in the step 2) is installed on a coating machine and used for coating an adhesive on one surface of a coating layer of the ceramic modified diaphragm, the poly-p-phenylene benzobisoxazole fiber film is installed on another unwinding mechanism, the unwinding mechanism is arranged on one side of the coating machine (the unwinding mechanism is located 30cm right in front of a material box of the coating machine), so that the ceramic modified diaphragm coated with the adhesive is bonded with the poly-p-phenylene benzobisoxazole fiber film when running to the unwinding mechanism, and the bonding speed is 23 m/min.
And after the ceramic modified diaphragm is bonded with the poly-p-phenylene benzobisoxazole fiber film, the ceramic modified diaphragm is pulled by a traction roller to enter drying equipment to be dried for 0.35min at 38 ℃, and the heat-resistant high-strength composite lithium battery diaphragm is obtained.
Example 3
A preparation method of a heat-resistant high-strength composite lithium battery diaphragm comprises the following steps:
1) preparing ceramic coating slurry: 51 parts by mass of water and 1 part by mass of dispersing agent are mixed in a planetary stirring device for 10min, and the stirring speed is 3100 r/min. Adding 40 parts by weight of ceramic powder, stirring, grinding, adding 7 parts by weight of adhesive, mixing in a planetary stirring device for 11min to be uniform (stirring speed is 43r/min), and applying ultrasonic waves with frequency of 13kHz in the mixing process to obtain ceramic coating slurry, wherein the adhesive is polyacrylate and the dispersing agent is polyacrylamide; the material of the ceramic powder is silicon oxide, and the particle size of the ceramic powder is D50: 0.6-1.0 μm. .
2) Coating the ceramic coating slurry obtained in the step 1) on one surface of a PE film by using a coating machine to obtain a coating with the thickness of 2 microns on the PE film, and drawing by a drawing roll into drying equipment to dry for 0.48min at 55 ℃ to obtain the ceramic modified diaphragm, wherein the coating speed of the coating machine is 51 m/min.
3) Bonding one side of the coating of the ceramic modified diaphragm obtained in the step 2) with a poly (p-phenylene-benzobisoxazole) fiber membrane through an adhesive, and specifically operating as follows: the ceramic modified diaphragm obtained in the step 2) is installed on a coating machine and used for coating an adhesive on one surface of a coating layer of the ceramic modified diaphragm, the poly-p-phenylene benzobisoxazole fiber film is installed on another unwinding mechanism, the unwinding mechanism is arranged on one side of the coating machine (the unwinding mechanism is located 30cm right in front of a material box of the coating machine), so that the ceramic modified diaphragm coated with the adhesive is bonded with the poly-p-phenylene benzobisoxazole fiber film when running to the unwinding mechanism, and the bonding speed is 46 m/min.
And after the ceramic modified diaphragm is bonded with the poly-p-phenylene benzobisoxazole fiber film, the ceramic modified diaphragm is pulled by a traction roller to enter drying equipment to be dried for 0.6min at 48 ℃, and the heat-resistant high-strength composite lithium battery diaphragm is obtained.
Example 4
A preparation method of a heat-resistant high-strength composite lithium battery diaphragm comprises the following steps:
1) preparing ceramic coating slurry: mixing 56 parts by mass of water and 1.5 parts by mass of a dispersing agent in a planetary stirring device for 15min, wherein the stirring speed is 2000 r/min. Adding 35 parts by weight of ceramic powder, stirring, grinding, adding 7.5 parts by weight of adhesive, mixing in a planetary stirring device for 9.5min to be uniform (the stirring speed is 36r/min), and applying ultrasonic waves with the frequency of 13kHz in the mixing process to obtain ceramic coating slurry, wherein the adhesive is Styrene Butadiene Rubber (SBR), and the dispersing agent is polyacrylamide; the material of the ceramic powder is zirconia, and the particle size of the ceramic powder is D50: 0.6-1.0 μm. . .
2) Coating the ceramic coating slurry obtained in the step 1) on one surface of a PE film by using a coating machine to obtain a coating with the thickness of 1.5 mu m on the PE film, and drawing the coating into a drying device by using a drawing roll to dry for 0.43min at 49 ℃ to obtain the ceramic modified diaphragm, wherein the coating speed of the coating machine is 41 m/min.
3) Bonding one side of the coating of the ceramic modified diaphragm obtained in the step 2) with a poly (p-phenylene-benzobisoxazole) fiber membrane through an adhesive, and specifically operating as follows: the ceramic modified diaphragm obtained in the step 2) is installed on a coating machine and used for coating an adhesive on one surface of a coating layer of the ceramic modified diaphragm, the poly-p-phenylene benzobisoxazole fiber film is installed on another unwinding mechanism, the unwinding mechanism is arranged on one side of the coating machine (the unwinding mechanism is located 30cm right in front of a material box of the coating machine), so that the ceramic modified diaphragm coated with the adhesive is bonded with the poly-p-phenylene benzobisoxazole fiber film when running to the unwinding mechanism, and the bonding speed is 33 m/min.
And after the ceramic modified diaphragm is bonded with the poly-p-phenylene benzobisoxazole fiber film, the ceramic modified diaphragm is pulled by a traction roller to enter drying equipment to be dried for 0.6min at 48 ℃, and the heat-resistant high-strength composite lithium battery diaphragm is obtained.
TABLE 1
The standard or detection method (national standard) according to which the items are detected in the above table:
1. appearance: visual inspection;
2. thickness: a Mark thickness gauge;
3. surface density: an electronic balance;
4. air permeability: a Wangxian ventilating instrument;
5. the needling strength is as follows: a needling instrument;
6, shrinkage rate: oven, imager;
7. tensile strength: and (4) a stretching instrument.
The test results of the heat-resistant high-strength composite lithium battery separators obtained in examples 1 to 4 are shown in table 1. As shown in the table, the preparation method provided by the invention can effectively improve the heat resistance and the strength of the heat-resistant high-strength composite lithium battery diaphragm.
The invention has been described in an illustrative manner, and it is to be understood that any simple variations, modifications or other equivalent changes which can be made by one skilled in the art without departing from the spirit of the invention fall within the scope of the invention.
Claims (10)
1. The preparation method of the heat-resistant high-strength composite lithium battery diaphragm is characterized by comprising the following steps of:
1) preparing ceramic coating slurry: mixing 51-61 parts by mass of water and 1-2 parts by mass of a dispersing agent, adding 30-40 parts by mass of ceramic powder, stirring, grinding, adding 7-8 parts by mass of an adhesive after grinding, and mixing uniformly to obtain ceramic coating slurry, wherein the adhesive is polyacrylate or Styrene Butadiene Rubber (SBR), and the dispersing agent is ammonium salt or sodium salt;
2) coating the ceramic coating slurry obtained in the step 1) on one surface of a PE film by using a coating machine to obtain a coating on the PE film, and drying to obtain a ceramic modified diaphragm;
3) and (3) bonding one side of the coating of the ceramic modified diaphragm obtained in the step 2) with a poly (p-phenylene benzobisoxazole) fiber membrane through an adhesive, and drying to obtain the heat-resistant high-strength composite lithium battery diaphragm.
2. The preparation method according to claim 1, wherein in the step 1), the water and the dispersant are mixed for 10-20 min in a planetary stirring device, and the stirring speed is 1500-3100 r/min;
in the step 1), ultrasonic waves with the frequency of 9-13 kHz are applied in the mixing process after the adhesive is added;
in the step 1), the ceramic powder is made of alumina, silica, zirconia or boehmite;
in the step 1), the ceramic powder has a particle size D50 of 0.6 to 1.0 μm.
3. The manufacturing method according to claim 2, wherein in the step 2), the coating speed of the coater is 31 to 51 m/min;
in the step 2), the thickness of the coating is 1-2 μm;
in the step 2), the drying temperature is 45-65 ℃.
4. The method according to claim 3, wherein the drying is performed at 30 to 50 ℃ in the step 3).
5. The preparation method according to claim 4, wherein in the step 3), the ceramic modified diaphragm obtained in the step 2) is bonded to the poly-p-phenylene-benzobisoxazole fiber film through a coating machine and an unwinding mechanism, wherein the ceramic modified diaphragm obtained in the step 2) is mounted on the coating machine and used for coating an adhesive on one surface of a coating layer of the ceramic modified diaphragm, the poly-p-phenylene-benzobisoxazole fiber film is mounted on the unwinding mechanism, and the unwinding mechanism is arranged on one side of the coating machine, so that the ceramic modified diaphragm coated with the adhesive is bonded to the poly-p-phenylene-benzobisoxazole fiber film when running to the unwinding mechanism.
6. The preparation method of claim 5, wherein the bonding speed of the ceramic modified diaphragm and the poly-p-phenylene benzobisoxazole fiber film is 23-46 m/min.
7. The heat-resistant high-strength composite lithium battery separator obtained by the preparation method according to any one of claims 1 to 6.
8. Use of the heat-resistant high-strength composite lithium battery separator according to claim 7 for improving heat resistance.
9. The use according to claim 8, wherein the heat shrinkage in the machine direction is 0.9 to 1.1% and the heat shrinkage in the transverse direction is 0.2 to 0.3%.
10. Use of the heat-resistant high-strength composite lithium battery separator according to claim 7 for improving strength.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113410577A (en) * | 2021-05-20 | 2021-09-17 | 河北金力新能源科技股份有限公司 | High-temperature-resistant high-insulation high-cycle lithium battery diaphragm and preparation method thereof |
| CN113991240A (en) * | 2021-10-28 | 2022-01-28 | 河北金力新能源科技股份有限公司 | Surface high-strength high-heat-resistance corrosion-resistance modified lithium battery diaphragm and preparation method thereof |
| CN114188666A (en) * | 2021-11-23 | 2022-03-15 | 河北金力新能源科技股份有限公司 | High-heat-resistance high-insulation lithium battery diaphragm and preparation method thereof |
| WO2022121265A1 (en) * | 2020-12-11 | 2022-06-16 | 重庆金美新材料科技有限公司 | Safe lithium-ion battery separator, preparation method and lithium-ion battery |
| CN115483500A (en) * | 2022-09-21 | 2022-12-16 | 河北金力新能源科技股份有限公司 | High-circulation-rate diaphragm and preparation method thereof |
| CN116207444A (en) * | 2023-05-06 | 2023-06-02 | 深圳中兴新材技术股份有限公司 | Heat-resistant coating for battery separator, battery separator and application thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157812A (en) * | 2014-04-23 | 2014-11-19 | 华南理工大学 | Lithium ion battery diaphragm, preparation method of lithium ion battery diaphragm and lithium ion battery |
| CN105374969A (en) * | 2015-10-28 | 2016-03-02 | 惠州市吉美泰电子科技有限公司 | Lithium battery diaphragm with interlayer, lithium battery and manufacturing method of lithium battery diaphragm |
| CN106207052A (en) * | 2016-09-13 | 2016-12-07 | 河北金力新能源科技股份有限公司 | A kind of coating unit of high temperature resistance multilayer composite lithium ion cell barrier film |
| CN108242522A (en) * | 2016-12-23 | 2018-07-03 | 比亚迪股份有限公司 | A kind of composite membrane of polymer and preparation method thereof and the lithium ion battery for including it |
| 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 |
| CN109411678A (en) * | 2018-10-16 | 2019-03-01 | 苏州捷力新能源材料有限公司 | A kind of high security ceramic diaphragm and preparation method for lithium ion battery |
| CN109524601A (en) * | 2018-10-16 | 2019-03-26 | 上海恩捷新材料科技有限公司 | A kind of diaphragm of power lithium ion battery and preparation method thereof |
-
2019
- 2019-04-02 CN CN201910262058.6A patent/CN111769239A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157812A (en) * | 2014-04-23 | 2014-11-19 | 华南理工大学 | Lithium ion battery diaphragm, preparation method of lithium ion battery diaphragm and lithium ion battery |
| CN105374969A (en) * | 2015-10-28 | 2016-03-02 | 惠州市吉美泰电子科技有限公司 | Lithium battery diaphragm with interlayer, lithium battery and manufacturing method of lithium battery diaphragm |
| CN106207052A (en) * | 2016-09-13 | 2016-12-07 | 河北金力新能源科技股份有限公司 | A kind of coating unit of high temperature resistance multilayer composite lithium ion cell barrier film |
| CN108242522A (en) * | 2016-12-23 | 2018-07-03 | 比亚迪股份有限公司 | A kind of composite membrane of polymer and preparation method thereof and the lithium ion battery for including it |
| 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 |
| CN109411678A (en) * | 2018-10-16 | 2019-03-01 | 苏州捷力新能源材料有限公司 | A kind of high security ceramic diaphragm and preparation method for lithium ion battery |
| CN109524601A (en) * | 2018-10-16 | 2019-03-26 | 上海恩捷新材料科技有限公司 | A kind of diaphragm of power lithium ion battery and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022121265A1 (en) * | 2020-12-11 | 2022-06-16 | 重庆金美新材料科技有限公司 | Safe lithium-ion battery separator, preparation method and lithium-ion battery |
| CN113410577A (en) * | 2021-05-20 | 2021-09-17 | 河北金力新能源科技股份有限公司 | High-temperature-resistant high-insulation high-cycle lithium battery diaphragm and preparation method thereof |
| CN113991240A (en) * | 2021-10-28 | 2022-01-28 | 河北金力新能源科技股份有限公司 | Surface high-strength high-heat-resistance corrosion-resistance modified lithium battery diaphragm and preparation method thereof |
| CN114188666A (en) * | 2021-11-23 | 2022-03-15 | 河北金力新能源科技股份有限公司 | High-heat-resistance high-insulation lithium battery diaphragm and preparation method thereof |
| CN115483500A (en) * | 2022-09-21 | 2022-12-16 | 河北金力新能源科技股份有限公司 | High-circulation-rate diaphragm and preparation method thereof |
| CN116207444A (en) * | 2023-05-06 | 2023-06-02 | 深圳中兴新材技术股份有限公司 | Heat-resistant coating for battery separator, battery separator and application thereof |
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