CN111341982B - Coated diaphragm, preparation method, doped boehmite, ceramic slurry and lithium battery - Google Patents
Coated diaphragm, preparation method, doped boehmite, ceramic slurry and lithium battery Download PDFInfo
- Publication number
- CN111341982B CN111341982B CN202010190023.9A CN202010190023A CN111341982B CN 111341982 B CN111341982 B CN 111341982B CN 202010190023 A CN202010190023 A CN 202010190023A CN 111341982 B CN111341982 B CN 111341982B
- Authority
- CN
- China
- Prior art keywords
- boehmite
- coating
- doped
- ceramic slurry
- ceramic coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
-
- 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
-
- 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 belongs to the technical field of lithium batteries, and particularly relates to a coating diaphragm, a preparation method of the coating diaphragm, doped boehmite, ceramic slurry and a lithium battery. The present coated separator includes: the coating comprises a base film and a boehmite ceramic coating layer positioned on the surface of the base film; wherein the boehmite ceramic coating comprises the following raw materials: doped boehmite, a dispersing agent, a thickening agent, a binder, a wetting agent and a solvent. The boehmite-doped ceramic slurry is prepared by adopting the doped boehmite, so that the internal space of the boehmite coating can be increased, the porosity of the boehmite coating is improved, and the liquid storage capacity of the electrolyte is further improved.
Description
Technical Field
The invention belongs to the technical field of lithium batteries, and particularly relates to a coating diaphragm, a preparation method of the coating diaphragm, doped boehmite, ceramic slurry and a lithium battery.
Background
The boehmite coating of the traditional diaphragm is tightly packed, the porosity is low, and the amount of electrolyte capable of being accommodated is small. In order to solve the problem of low porosity of the boehmite coating, the boehmite nano-fibers and the rhombohedral boehmite are doped according to a certain proportion, so that the boehmite coating has a bridge structure, the internal space of the boehmite coating is increased, the porosity of the boehmite coating is improved, and the liquid storage amount of electrolyte is increased.
Disclosure of Invention
The invention provides a coating diaphragm, a preparation method, doped boehmite, ceramic slurry and a lithium battery.
In order to solve the above technical problems, the present invention provides a coated separator including: the coating comprises a base film and a boehmite ceramic coating layer positioned on the surface of the base film; wherein the boehmite ceramic coating comprises the following raw materials: doped boehmite, a dispersing agent, a thickening agent, a binder, a wetting agent and a solvent.
In a second aspect, the invention also provides a doped boehmite comprising: nano-fiber boehmite, rhombohedral boehmite; and both are adapted to form a bridging structure.
In a third aspect, the invention also provides a boehmite ceramic slurry comprising the following raw materials: doping boehmite, a dispersing agent, a thickening agent, a binder, a wetting agent and a solvent; the raw materials are suitable for being uniformly dispersed to form the boehmite ceramic slurry.
In a fourth aspect, the present invention also provides a method for preparing a coated separator, comprising: preparing boehmite ceramic slurry; and coating the boehmite ceramic slurry on the surface of the base film and drying to form the boehmite ceramic coating.
In a fifth aspect, the present invention also provides a lithium battery, including: a diaphragm; the separator is a coated separator as described above.
The coated diaphragm and the preparation method thereof, the doped boehmite, the ceramic slurry and the lithium battery have the beneficial effects that the doped boehmite is prepared into the boehmite ceramic slurry and is coated on the surface of the base film to form the boehmite ceramic coating, so that the internal space of the boehmite coating can be increased, the porosity of the boehmite coating is improved, and the liquid storage capacity of the electrolyte is further improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flow chart of a process for preparing a coated separator of the present invention;
FIG. 2 is a schematic representation of the bridging structure of the doped boehmite of the invention;
FIG. 3 is a graph comparing the porosity of the coated membranes of the present invention to conventional membranes;
FIG. 4 is a graph comparing the stock solution of the coated membranes of the present invention with conventional membranes;
in FIG. 2: nano-fiber boehmite 1, rhombohedral boehmite 2.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A first part:
the boehmite coating of the traditional diaphragm is tightly packed, the porosity is low, and the amount of electrolyte capable of being accommodated is small. In order to improve the problem of low porosity of boehmite coatings, the present invention provides a coated separator (i.e., a high liquid-holding boehmite-amount-coated separator) comprising: the coating comprises a base film and a boehmite ceramic coating layer positioned on the surface of the base film; wherein the boehmite ceramic coating comprises the following raw materials: doped boehmite, a dispersing agent, a thickening agent, a binder, a wetting agent and a solvent.
Optionally, the base film includes, but is not limited to, high polymer films such as PP film, PE film, PI film, PET film, and the like, and composite films thereof.
In the raw materials of the boehmite ceramic coating, the mass ratio of doped boehmite, a dispersing agent, a thickening agent, a binder and a wetting agent is 1:0.004-0.016:0.003-0.03:0.022-0.09:0.001-0.006, and proper amount of solvent to prepare boehmite ceramic slurry for coating on the surface of the basement membrane. Optionally, the mass ratio of the doped boehmite to the dispersant to the thickener to the binder to the wetting agent is 1:0.01:0.006:0.05:0.004. optionally, the mass ratio of the doped boehmite to the dispersant to the thickener to the binder to the wetting agent is 1:0.007:0.01:0.08:0.003.
meanwhile, specific materials corresponding to the raw materials of the boehmite ceramic coating are partially listed to facilitate understanding of the scheme, as follows:
the dispersing agent comprises silicate (such as water glass), alkali metal phosphate (such as sodium tripolyphosphate, sodium hexametaphosphate, sodium pyrophosphate and the like), and organic dispersing agent; wherein the organic dispersant comprises: at least one of triethylhexyl phosphoric acid, sodium dodecyl sulfate, methyl amyl alcohol, cellulose derivative, polyacrylamide, gule gum and fatty acid polyglycol ester.
The thickener includes, but is not limited to, sodium carboxymethyl acrylate.
The binder includes, but is not limited to, various aqueous binders such as acrylics.
The wetting agent includes, but is not limited to, at least one of anionic and nonionic surfactants and the like.
The solvent includes, but is not limited to, pure water.
As an alternative to doping boehmite.
Referring to fig. 2, the doped boehmite comprises: nano-fiber boehmite 1, rhombohedral boehmite 2 (which may also be rectangular rhombohedral boehmite); and both are adapted to form a bridge structure. And the mass ratio of the nano-fiber boehmite to the rhombohedral boehmite is (1-11): (1-11), optionally (1-3): (3-1).
Optionally, the nano-fibrous boehmite is a linear material with a length of 0.5-10 μm, optionally 3 μm, 5 μm, 8 μm; and the diamond boehmite has a particle size D50 of 0.3-5.0 μm, optionally 1 μm or 3 μm.
The boehmite nano-fiber and the rhombohedral boehmite are doped in a certain proportion in the doped boehmite of the embodiment, so that the boehmite coating has a bridging structure of a bridge, the internal space of the boehmite coating is increased, the porosity of the boehmite coating is improved, and the liquid storage amount of electrolyte is increased.
As previously mentioned, referring to fig. 2, the present invention also provides a doped boehmite comprising: nano-fiber boehmite 1, diamond boehmite 2; and both are adapted to form a bridge structure.
As described above, the present invention also provides a boehmite ceramic slurry comprising the following raw materials: doping boehmite, a dispersing agent, a thickening agent, a binder, a wetting agent and a solvent; the raw materials are suitably dispersed uniformly to form the boehmite ceramic slurry. The dispersion method includes, but is not limited to, high-speed dispersion by using a double planet or a sand mill.
As previously described, referring to fig. 1, the present invention also provides a method of preparing a coated separator, comprising: preparing boehmite ceramic slurry; and coating the boehmite ceramic slurry on the surface of the base film and drying to form a boehmite ceramic coating layer, thus preparing the coating diaphragm, namely the high-liquid-storage-capacity boehmite coating diaphragm.
Alternatively, the method for preparing boehmite ceramic slurry comprises: selecting nano-fiber boehmite and rhombohedral boehmite, and doping the nano-fiber boehmite and the rhombohedral boehmite according to a proportion; then adding a dispersing agent, a wetting agent, a binder, a thickening agent and pure water according to a certain proportion, and uniformly dispersing in a dispersing mode such as stirring, sanding and the like to prepare the boehmite ceramic slurry.
As described above, the present invention also provides a lithium battery including: a diaphragm; the separator is a coated separator as described above.
A second part:
example 1
(1) Doped boehmite is prepared.
8kg of nano-fiber boehmite with a length of 5 μm and 10.5kg of rhombohedral boehmite with a particle size D50 of 0.8 μm were first sand-milled and mixed to prepare doped boehmite.
(2) And preparing boehmite ceramic slurry.
Adding 20.4kg of pure water into a stirring tank, and adding 0.094kg of alkali metal phosphate to stir and disperse; adding 18.0kg of doped boehmite, and stirring and dispersing; then 5.3kg of sodium carboxymethyl acrylate solution is added, and stirring and sanding are carried out; then 5.6kg of acrylic acid binder is added and stirred; then 0.46kg of wetting agent solution is added for stirring and dispersion to prepare boehmite ceramic slurry.
(3) And (4) coating.
And coating the boehmite ceramic slurry on the PE film after 12 mu m to form a boehmite ceramic coating on the surface of the PE film. The coating specification is 12+4 (namely the thickness of the base film is 12 mu m, and the coating thickness is 4 mu m), and the boehmite coated diaphragm with high liquid storage capacity is prepared.
Example 2
(1) Doped boehmite is prepared.
1kg of nano-fiber boehmite with a length of 0.5 μm and 11kg of rhombohedral boehmite with a particle size D50 of 0.3 μm were sand-milled and mixed to prepare doped boehmite.
(2) And preparing boehmite ceramic slurry.
Adding 12kg of pure water into a stirring tank, and adding 0.04kg of alkali metal phosphate for stirring and dispersing; then 10kg of doped boehmite is added for stirring and dispersion; then 0.03kg of sodium carboxymethyl acrylate solution is added, and stirring and sanding are carried out; then adding 0.22kg of acrylic acid adhesive and stirring; then 0.06kg of wetting agent solution is added for stirring and dispersion to prepare the boehmite ceramic slurry.
(3) And (4) coating.
And coating the boehmite ceramic slurry on a PI film with the thickness of 12 mu m to form a boehmite ceramic coating on the surface of the PI film. The coating specification is 12+4 (namely the thickness of the base film is 12 mu m, and the coating thickness is 4 mu m), and the boehmite coated diaphragm with high liquid storage capacity is prepared.
Example 3
(1) Doped boehmite is prepared.
11kg of nano-fiber boehmite with a length of 2 μm and 1kg of rhombohedral boehmite with a particle size D50 of 1 μm were first sand-milled and mixed to prepare doped boehmite.
(2) And preparing boehmite ceramic slurry.
Adding 12kg of pure water into a stirring tank, and adding 0.16kg of methyl amyl alcohol for stirring and dispersing; then 10kg of doped boehmite is added for stirring and dispersion; then 0.3kg of sodium carboxymethyl acrylate solution is added, and stirring and sanding are carried out; then 0.9kg of acrylic acid binder is added and stirred; then 0.04kg of wetting agent solution is added for stirring and dispersion to prepare boehmite ceramic slurry.
(3) And (4) coating.
And coating the boehmite ceramic slurry on a PP film with the thickness of 12 mu m to form a boehmite ceramic coating on the surface of the PP film. The coating specification is 12+4 (namely the thickness of the base film is 12 mu m, and the coating thickness is 4 mu m), and the boehmite coated diaphragm with high liquid storage capacity is prepared.
Example 4
(1) Doped boehmite was prepared.
4kg of nano-fiber boehmite with a length of 6 μm and 12kg of rhombohedral boehmite with a particle size D50 of 3 μm were sand-milled and mixed to prepare doped boehmite.
(2) And preparing boehmite ceramic slurry.
Adding 12kg of pure water into a stirring tank, and adding 0.1kg of methyl amyl alcohol for stirring and dispersing; then 10kg of doped boehmite is added for stirring and dispersion; then 0.06kg of sodium carboxymethyl acrylate solution is added for stirring and sanding; then 0.05kg of acrylic acid binder is added and stirred; then 0.01kg of wetting agent solution is added for stirring and dispersion to prepare boehmite ceramic slurry.
(3) And (4) coating.
And coating the boehmite ceramic slurry on a PP film with the thickness of 12 mu m to form a boehmite ceramic coating on the surface of the PP film. The coating specification is 12+4 (i.e. the thickness of the base film is 12 μm, and the coating thickness is 4 μm), and the boehmite coated membrane with high liquid storage capacity is prepared.
Example 5
(1) Doped boehmite is prepared.
12kg of 1 μm long nanofibrous boehmite was first sand-milled and mixed with 4kg of 1 μm diamond boehmite having a particle size D50 to produce doped boehmite.
(2) Preparing boehmite ceramic slurry.
Adding 12kg of pure water into a stirring tank, and adding 0.12kg of methyl amyl alcohol for stirring and dispersing; then 10kg of doped boehmite is added for stirring and dispersion; then 0.2kg of sodium carboxymethyl acrylate solution is added, and stirring and sanding are carried out; then adding 0.8kg of acrylic acid binder and stirring; then 0.02kg of wetting agent solution is added for stirring and dispersion to prepare boehmite ceramic slurry;
(3) And (4) coating.
And coating the boehmite ceramic slurry on a PP film with the thickness of 12 mu m to form a boehmite ceramic coating on the surface of the PP film. The coating specification is 12+4 (i.e. the thickness of the base film is 12 μm, and the coating thickness is 4 μm), and the boehmite coated membrane with high liquid storage capacity is prepared.
Comparative example
Diamond boehmite with the particle size D50 of 0.8 mu m is selected, 50kg of long-cycle coating slurry is prepared, a PE film with the particle size of 12 mu m is adopted, and the coating specification is 12+4, so that the traditional diaphragm is prepared.
Example 6
Referring to fig. 3, 4, this example 6 was conducted to measure the porosity and the liquid storage amount of the boehmite-coated separator (corresponding to the novel type in fig. 3 or 4) prepared in example 1 and the conventional separator (corresponding to the conventional type in fig. 3 or 4) prepared in the comparative example. It can be seen that the high liquid content boehmite coated membrane of the invention had a porosity of 70% and a liquid content of 40g; whereas the porosity of the conventional separator was 45%, the liquid storage amount thereof was 25g. Therefore, the porosity and the liquid storage capacity of the boehmite coated diaphragm with high liquid storage capacity are greatly improved, and the formed doped boehmite has a bridging structure of a bridge frame due to the fact that the boehmite nano fibers and the rhombohedral boehmite are doped in a certain proportion, so that the internal space of the boehmite coating is increased, the porosity of the boehmite coating is improved, and the liquid storage capacity of electrolyte is improved.
In summary, the coated separator, the preparation method, the doped boehmite, the ceramic slurry and the lithium battery are prepared by doping the boehmite nano-fibers and the rhombohedral boehmite in a certain ratio to form the doped boehmite with a bridging structure, and the boehmite ceramic slurry is prepared and coated on the surface of the base film to form the boehmite ceramic coating, so that the internal space of the boehmite coating can be increased, the porosity of the boehmite coating can be improved, and the liquid storage amount of the electrolyte can be further increased.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (5)
1. A coated separator, comprising:
the coating comprises a base film and a boehmite ceramic coating positioned on the surface of the base film; wherein
The boehmite ceramic coating comprises the following raw materials: doping boehmite, a dispersing agent, a thickening agent, a binder, a wetting agent and a solvent;
the doped boehmite comprises: nano-fiber boehmite, rhombohedral boehmite; and
both adapted to form a bridge structure;
the nano-fiber boehmite is a linear material, and the length of the linear material is 0.5-10 mu m;
the grain size D50 of the rhombohedral boehmite is 0.3-5.0 mu m;
the mass ratio of the nano-fiber boehmite to the rhombohedral boehmite is (1-11): (1-11);
the boehmite ceramic coating had a thickness of 4 μm.
2. The coated membrane of claim 1,
the mass ratio of the doped boehmite to the dispersing agent to the thickening agent to the bonding agent to the wetting agent is 1:0.004-0.016:0.003-0.03:0.022-0.09:0.001-0.006.
3. The coated membrane of claim 1,
the dispersant comprises silicates, alkali metal phosphates and organic dispersants; wherein
The organic dispersant includes: at least one of triethylhexyl phosphoric acid, sodium dodecyl sulfate, methyl amyl alcohol, cellulose derivative, polyacrylamide, gule gum and fatty acid polyglycol ester.
4. A method of preparing a coated separator as defined in claim 1, comprising:
preparing boehmite ceramic coating slurry;
and coating the boehmite ceramic coating slurry on the surface of the base film and drying to form the boehmite ceramic coating.
5. A lithium battery, comprising:
a diaphragm;
the separator employs the coated separator as claimed in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010190023.9A CN111341982B (en) | 2020-03-18 | 2020-03-18 | Coated diaphragm, preparation method, doped boehmite, ceramic slurry and lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010190023.9A CN111341982B (en) | 2020-03-18 | 2020-03-18 | Coated diaphragm, preparation method, doped boehmite, ceramic slurry and lithium battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111341982A CN111341982A (en) | 2020-06-26 |
| CN111341982B true CN111341982B (en) | 2022-11-25 |
Family
ID=71186288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010190023.9A Active CN111341982B (en) | 2020-03-18 | 2020-03-18 | Coated diaphragm, preparation method, doped boehmite, ceramic slurry and lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111341982B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112467308B (en) * | 2020-10-27 | 2023-09-05 | 惠州锂威新能源科技有限公司 | Diaphragm, preparation method thereof and lithium ion battery |
| CN113659286B (en) * | 2021-08-10 | 2023-06-30 | 惠州亿纬锂能股份有限公司 | Boehmite slurry, boehmite coated separator, preparation method of boehmite coated separator and lithium ion battery |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832368A (en) * | 2012-09-27 | 2012-12-19 | 杭州万好万家动力电池有限公司 | Diaphragm for lithium ion battery and lithium ion battery applying diaphragm |
| CN103579552A (en) * | 2012-07-24 | 2014-02-12 | 海洋王照明科技股份有限公司 | Electrochemical power-supply composite membrane and preparation method thereof |
| CN103915591A (en) * | 2014-04-09 | 2014-07-09 | 深圳市星源材质科技股份有限公司 | Water-based ceramic coating lithium ion battery diaphragm and processing method thereof |
| CN105489819A (en) * | 2016-02-01 | 2016-04-13 | 华东理工大学 | Lithium ion battery ceramic diaphragm paste |
| CN105576173A (en) * | 2015-12-16 | 2016-05-11 | 安徽壹石通材料科技股份有限公司 | Preparation method and application of ceramic coating material |
| CN105789539A (en) * | 2016-04-29 | 2016-07-20 | 沧州明珠隔膜科技有限公司 | Waterborne ceramic coated membrane for lithium ion battery and preparation method thereof |
| CN106058124A (en) * | 2016-05-29 | 2016-10-26 | 合肥国轩高科动力能源有限公司 | Production method for lithium-ion battery separator |
| CN106186008A (en) * | 2016-06-30 | 2016-12-07 | 深圳市星源材质科技股份有限公司 | A kind of lithium battery diaphragm coating boehmite and hydrothermal preparing process thereof |
| CN107078231A (en) * | 2014-05-21 | 2017-08-18 | 赛美西有限公司 | Passive isolated material |
| CN107342387A (en) * | 2017-07-05 | 2017-11-10 | 东莞中汽宏远汽车有限公司 | High stability lithium ion battery separator and preparation method thereof and lithium ion battery |
| CN108963164A (en) * | 2018-06-28 | 2018-12-07 | 深圳市旭然电子有限公司 | Inorganic ceramic coating functions lithium ion battery isolation film, preparation method and its lithium ion battery |
-
2020
- 2020-03-18 CN CN202010190023.9A patent/CN111341982B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103579552A (en) * | 2012-07-24 | 2014-02-12 | 海洋王照明科技股份有限公司 | Electrochemical power-supply composite membrane and preparation method thereof |
| CN102832368A (en) * | 2012-09-27 | 2012-12-19 | 杭州万好万家动力电池有限公司 | Diaphragm for lithium ion battery and lithium ion battery applying diaphragm |
| CN103915591A (en) * | 2014-04-09 | 2014-07-09 | 深圳市星源材质科技股份有限公司 | Water-based ceramic coating lithium ion battery diaphragm and processing method thereof |
| CN107078231A (en) * | 2014-05-21 | 2017-08-18 | 赛美西有限公司 | Passive isolated material |
| CN105576173A (en) * | 2015-12-16 | 2016-05-11 | 安徽壹石通材料科技股份有限公司 | Preparation method and application of ceramic coating material |
| CN105489819A (en) * | 2016-02-01 | 2016-04-13 | 华东理工大学 | Lithium ion battery ceramic diaphragm paste |
| CN105789539A (en) * | 2016-04-29 | 2016-07-20 | 沧州明珠隔膜科技有限公司 | Waterborne ceramic coated membrane for lithium ion battery and preparation method thereof |
| CN106058124A (en) * | 2016-05-29 | 2016-10-26 | 合肥国轩高科动力能源有限公司 | Production method for lithium-ion battery separator |
| CN106186008A (en) * | 2016-06-30 | 2016-12-07 | 深圳市星源材质科技股份有限公司 | A kind of lithium battery diaphragm coating boehmite and hydrothermal preparing process thereof |
| CN107342387A (en) * | 2017-07-05 | 2017-11-10 | 东莞中汽宏远汽车有限公司 | High stability lithium ion battery separator and preparation method thereof and lithium ion battery |
| CN108963164A (en) * | 2018-06-28 | 2018-12-07 | 深圳市旭然电子有限公司 | Inorganic ceramic coating functions lithium ion battery isolation film, preparation method and its lithium ion battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111341982A (en) | 2020-06-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111341982B (en) | Coated diaphragm, preparation method, doped boehmite, ceramic slurry and lithium battery | |
| CN108598563B (en) | Water-based solid electrolyte membrane, preparation method thereof and secondary battery | |
| CN105609743B (en) | A kind of preparation method of SiOx-C-CNT composite materials for negative electrode of lithium ion battery | |
| CN107528038A (en) | Prepare the mixed slurry of composite diaphragm and the preparation method of composite diaphragm | |
| CN108950608B (en) | A kind of new netted copper foil preparation method | |
| CN110993863B (en) | High-cohesiveness water-based PVDF slurry, preparation method and application thereof | |
| CN111525077A (en) | Ultra-light ceramic mixed coating diaphragm slurry and preparation method thereof | |
| CN108531006A (en) | The waterborne anti-corrosive primer and preparation method thereof of graphene enhancing | |
| CN109546085A (en) | It is a kind of to lead carbon silicium cathode pole piece of lithium binder and preparation method thereof using high glue | |
| CN111370623B (en) | Alumina ceramic diaphragm, preparation method thereof, powder, ceramic slurry and lithium battery | |
| CN109638286B (en) | Carboxymethyl cellulose-based binder and application thereof in lithium battery | |
| JP2004526286A (en) | Method for producing zinc oxide electrode for alkaline battery | |
| CN103382684A (en) | Filter paper with high filtration efficiency and preparation method thereof | |
| CN108630869A (en) | A kind of diaphragm, preparation method and lithium battery | |
| WO2021120858A1 (en) | High-wetting long-cycle alumina ceramic slurry and preparation method therefor, and lithium battery diaphragm | |
| CN112382757A (en) | Negative electrode composite thickening agent, negative electrode plate and preparation method | |
| CN103334347A (en) | Anticorrosive filter paper and preparation method thereof | |
| CN111341974B (en) | PVDF (polyvinylidene fluoride) coated diaphragm and preparation method thereof, PVDF coated layer and lithium battery | |
| CN111370622B (en) | Coating area-controllable gluing diaphragm and preparation method thereof, gluing layer and lithium battery | |
| US5997794A (en) | Method of making matrix for carbonate fuel cells | |
| CN109390532A (en) | Lithium battery basement membrane coating slurry and preparation method thereof | |
| CN113555647A (en) | Ceramic diaphragm for lithium ion battery, lithium ion battery and preparation method of lithium ion battery | |
| EP0343362B1 (en) | Aqueous cadmium oxide paste with a high fluidity for filling by way of vibration electrode structures of the foam or fibrous type | |
| CN108054325A (en) | A kind of novel polymer lithium ion battery membrane | |
| CN112952290A (en) | High-swelling-degree AFL (atomic fluorescence Spectrometry) and preparation method thereof, and high-swelling-degree AFL ceramic diaphragm |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |