CN109384417B - High-temperature-resistance ceramic slurry composition for wet-process diaphragm coating of lithium battery - Google Patents
High-temperature-resistance ceramic slurry composition for wet-process diaphragm coating of lithium battery Download PDFInfo
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- CN109384417B CN109384417B CN201811134674.5A CN201811134674A CN109384417B CN 109384417 B CN109384417 B CN 109384417B CN 201811134674 A CN201811134674 A CN 201811134674A CN 109384417 B CN109384417 B CN 109384417B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
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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
- H01M50/446—Composite material consisting of a mixture of organic and inorganic materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/76—Use at unusual temperatures, e.g. sub-zero
- C04B2111/763—High temperatures
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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 ceramic slurry composition for coating a high-temperature-resistant lithium battery wet-process diaphragm; the slurry composition comprises the following components in parts by weight: 20-60 parts of alumina particles; 1.75-10.75 parts of a binder; 0.2-0.8 part of curing agent; 0.4-1 part of an auxiliary agent; 27.7-77.95 parts of water. The slurry composition can control the deformation of the PE microporous film within 3% at 150 ℃ for 1h, the adhesion force with the PE microporous film is usually more than 95N/m, and the water content is less than 800 ppm.
Description
Technical Field
The invention relates to the technical field of ceramic slurry for coating a diaphragm, in particular to a high-temperature-resistance ceramic slurry composition for coating a lithium battery diaphragm by a wet method.
Background
The diaphragm is a high molecular polymer microporous film which is arranged between a positive electrode and a negative electrode of the lithium ion battery and is used for providing physical barrier to prevent short circuit and providing a lithium ion migration pore channel, the common main components are PP/PE single-layer or multi-layer microporous films, the manufacturing process is divided into a dry method and a wet method, the dry method takes PP as a raw material, and the wet method takes PE as a raw material; with the saturation of the consumer electronics market and the development demand of the electric automobile market, the performance requirement on the diaphragm is higher and higher; the power battery needs higher energy density, requires more active materials and higher voltage window for the battery, and requires thinner diaphragm thickness and higher dimensional stability in terms of the diaphragm; according to the manufacturing process characteristics of the diaphragm, the demand of the power battery can be met only by the thickness of the diaphragm in the wet process, the melting point of the raw material PE in the wet process is 135 ℃, the risk of thermal dimensional stability is high in the operation process of the battery, particularly, the battery is easy to short circuit caused by the melting of the diaphragm under the abuse condition of the battery, and the safety risk is high; in order to solve the problem, a PE microporous film of a wet process can be modified, and a common method is to coat a layer of alumina ceramic coating on the surface of the microporous film to improve the dimensional stability of the microporous film at high temperature, but the dimensional stability of the existing alumina ceramic coated PE can only meet 130 ℃ for 1h, the deformation of the existing alumina ceramic coated PE controlled within 3% in the MD/TD direction cannot meet 150 ℃ for 1h, and the MD/TD is controlled within 3%.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a ceramic slurry composition for coating a high-temperature-resistant lithium battery wet-process diaphragm; the ceramic coating slurry composition can control the deformation of the PE microporous film within 3 percent at 150 ℃ for 1 hour.
The purpose of the invention is realized by the following technical scheme:
the invention relates to a ceramic slurry composition for coating a high-temperature-resistant lithium battery wet-process diaphragm; the slurry composition comprises the following components in parts by weight:
preferably, the alumina particles are selected from alpha phase alumina with particle size of 0.3-0.5 μm and purity of 99.99%.
Preferably, the binder is of the type Shanghai shingyo LG-A05 or LG-A06.
Preferably, the curing agent is bayer Desmodur 2655.
Preferably, the auxiliary agents are antifoaming agents Foamex 822, wetting agents BYK378 and Japan xylonite 1220 CMC.
Preferably, the water is deionized water.
The invention also relates to a preparation method of the ceramic slurry composition for coating the high-temperature-resistant lithium battery wet-process diaphragm; the method comprises the following steps:
s1, adding the auxiliary agent and the binder into water, and uniformly stirring;
s2, slowly adding the alumina particles into the liquid in the step S1 for multiple times for dispersing;
s3, adding the curing agent;
s4, placing the dispersed slurry prepared in the step S3 into a ball mill for two times of ball milling, and enabling the particle size distribution to meet the requirement that D50 is the primary particle size of alumina; and (4) finishing.
Preferably, in step S1, the stirring speed is 1500rpm and the stirring time is 5 minutes.
Preferably, in step S2, the dispersing speed is 1500rpm and the dispersing time is 45 minutes.
Compared with the prior art, the invention has the following beneficial effects:
1. the ceramic coating slurry composition can control the deformation of a PE microporous film within 3 percent at 150 ℃ for 1 hour;
2. the adhesive force between the ceramic coating slurry composition and the PE microporous film is usually more than 95N/m;
3. the ceramic coating slurry composition of the present invention has a water content of less than 800 ppm.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1
The embodiment relates to a ceramic slurry composition for coating a high-temperature-resistant lithium battery wet-process diaphragm; the slurry composition comprises the following components in parts by weight:
during the preparation process, the raw materials are mixed,
s1, adding the auxiliary agents Foamex 822, BYK-378, xylonite CMC and the binder LG-A05 into water, and uniformly stirring; 1500rpm, 5 minutes of dispersion;
s2, slowly adding the alumina particles into the liquid in the step S1 for multiple times for dispersing; dispersing at 1500rpm for 45 minutes;
s3, adding the curing agent Desmodur 2655;
s4, placing the dispersed slurry prepared in the step S3 into a ball mill for two times of ball milling, and enabling the particle size distribution to meet the requirement that D50 is the primary particle size of alumina; and (4) finishing.
Example 2
The embodiment relates to a ceramic slurry composition for coating a high-temperature-resistant lithium battery wet-process diaphragm; the preparation method is the same as that of example 1; the slurry composition comprises the following components in parts by weight:
alumina particles (particle size 0.5 μm): 20 parts of (1);
example 3
The embodiment relates to a ceramic slurry composition for coating a high-temperature-resistant lithium battery wet-process diaphragm; the preparation method is the same as that of example 1; the slurry composition comprises the following components in parts by weight:
comparative example 1
The present comparative example relates to a ceramic slurry composition for coating a separator; the preparation method is the same as that of example 1; the slurry composition comprises the following components in parts by weight:
comparative example 2
The present comparative example relates to a ceramic slurry composition for coating a separator; the preparation method is the same as that of example 1; the slurry composition comprises the following components in parts by weight:
the slurries prepared in the above examples and comparative examples were coated on a wet PE microporous film, requiring a 12+4 μm coating, and the coated separator was subjected to comparative tests, the results of which are shown in table 1 below:
TABLE 1
As can be seen from Table 1, the slurry coated products of the examples meet the requirement that MD/TD is less than 3% at 150 ℃, and have high adhesion and low water content.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (6)
1. A ceramic slurry composition for high temperature resistance lithium battery wet-process diaphragm coating; the slurry composition is characterized by comprising the following components in parts by weight:
alumina particles: 20-60 parts;
adhesive: 1.75-10.75 parts;
curing agent: 0.2-0.8 part;
auxiliary agent: 0.4-1 part;
water: 27.7-77.95 parts;
the alumina particles are alpha-phase alumina with the particle size of 0.3-0.5 mu m and the purity of 99.99 percent; the curing agent is Bayer Bayhydur 2655;
the binder is of the type Shanghai Pianying LG-A05 or LG-A06.
2. The high temperature resistant lithium battery wet process separator coating ceramic slurry composition of claim 1; the additive is characterized by comprising an antifoaming agent Foamex 822, a wetting agent BYK378 and Japanese cellosolve 1220 CMC.
3. The high temperature resistant lithium battery wet process separator coating ceramic slurry composition of claim 1; the method is characterized in that the water is deionized water.
4. A method for preparing the high temperature resistant lithium battery wet process separator coating ceramic slurry composition according to any one of claims 1-3; characterized in that the method comprises the following steps:
s1, adding the auxiliary agent and the binder into water, and uniformly stirring;
s2, slowly adding the alumina particles into the liquid in the step S1 for multiple times for dispersing;
s3, adding the curing agent;
s4, placing the dispersed slurry prepared in the step S3 into a ball mill for two times of ball milling, and enabling the particle size distribution to meet the requirement that D50 is the primary particle size of alumina; and (4) finishing.
5. The method according to claim 4, wherein the stirring speed is 1500rpm and the stirring time is 5 minutes in step S1.
6. The method of claim 4, wherein the dispersing speed is 1500rpm and the dispersing time is 45 minutes in step S2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811134674.5A CN109384417B (en) | 2018-09-26 | 2018-09-26 | High-temperature-resistance ceramic slurry composition for wet-process diaphragm coating of lithium battery |
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| CN201811134674.5A CN109384417B (en) | 2018-09-26 | 2018-09-26 | High-temperature-resistance ceramic slurry composition for wet-process diaphragm coating of lithium battery |
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| CN109384417B true CN109384417B (en) | 2021-05-25 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003073543A3 (en) * | 2002-02-26 | 2004-01-08 | Creavis Tech & Innovation Gmbh | Flexible electrolyte membrane based on a carrier comprising polymer fibers and on a proton-conducting material, method for the production thereof, and use thereof |
| CN103165921A (en) * | 2011-12-15 | 2013-06-19 | 韩国轮胎株式会社 | Separator for fuel cell and fuel cell comprising same |
| CN103915594A (en) * | 2014-04-21 | 2014-07-09 | 上海顶皓新材料科技有限公司 | Low-ion-impedance high-temperature-resisting lithium battery coating diaphragm |
| CN104269509A (en) * | 2014-10-14 | 2015-01-07 | 上海电气集团股份有限公司 | Ceramic coating diaphragm for lithium battery and preparation method of ceramic coating diaphragm |
| CN105932210A (en) * | 2016-05-19 | 2016-09-07 | 湖南锂顺能源科技有限公司 | Lithium ion battery alumina hydrate coating membrane and preparation method thereof |
| CN106784529A (en) * | 2016-12-27 | 2017-05-31 | 深圳中兴创新材料技术有限公司 | A kind of lithium ion battery separator and preparation method thereof |
| CN106848152A (en) * | 2017-01-19 | 2017-06-13 | 宁德卓高新材料科技有限公司 | Aluminium oxide ceramics coats the preparation method of barrier film |
| CN108070853A (en) * | 2017-12-15 | 2018-05-25 | 广东昭信照明科技有限公司 | A kind of ceramic slurry, preparation method and composite ceramics heat-radiating substrate |
-
2018
- 2018-09-26 CN CN201811134674.5A patent/CN109384417B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003073543A3 (en) * | 2002-02-26 | 2004-01-08 | Creavis Tech & Innovation Gmbh | Flexible electrolyte membrane based on a carrier comprising polymer fibers and on a proton-conducting material, method for the production thereof, and use thereof |
| CN103165921A (en) * | 2011-12-15 | 2013-06-19 | 韩国轮胎株式会社 | Separator for fuel cell and fuel cell comprising same |
| CN103915594A (en) * | 2014-04-21 | 2014-07-09 | 上海顶皓新材料科技有限公司 | Low-ion-impedance high-temperature-resisting lithium battery coating diaphragm |
| CN104269509A (en) * | 2014-10-14 | 2015-01-07 | 上海电气集团股份有限公司 | Ceramic coating diaphragm for lithium battery and preparation method of ceramic coating diaphragm |
| CN105932210A (en) * | 2016-05-19 | 2016-09-07 | 湖南锂顺能源科技有限公司 | Lithium ion battery alumina hydrate coating membrane and preparation method thereof |
| CN106784529A (en) * | 2016-12-27 | 2017-05-31 | 深圳中兴创新材料技术有限公司 | A kind of lithium ion battery separator and preparation method thereof |
| CN106848152A (en) * | 2017-01-19 | 2017-06-13 | 宁德卓高新材料科技有限公司 | Aluminium oxide ceramics coats the preparation method of barrier film |
| CN108070853A (en) * | 2017-12-15 | 2018-05-25 | 广东昭信照明科技有限公司 | A kind of ceramic slurry, preparation method and composite ceramics heat-radiating substrate |
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