CN114171848A - Solid electrolyte-electrode integrated diaphragm and preparation method thereof - Google Patents

Solid electrolyte-electrode integrated diaphragm and preparation method thereof Download PDF

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Publication number
CN114171848A
CN114171848A CN202111228453.6A CN202111228453A CN114171848A CN 114171848 A CN114171848 A CN 114171848A CN 202111228453 A CN202111228453 A CN 202111228453A CN 114171848 A CN114171848 A CN 114171848A
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solid electrolyte
electrode integrated
diaphragm
coating
ceramic powder
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龚钰
刘敏
胡远森
王彦
吴道明
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Dongfeng Motor Corp
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Dongfeng Motor Corp
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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
    • H01M50/434—Ceramics
    • 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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/04—Processes of manufacture in general
    • H01M4/0402—Methods of deposition of the material
    • H01M4/0407—Methods of deposition of the material by coating on an electrolyte layer
    • 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
    • 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
    • H01M50/46—Separators, membranes or diaphragms characterised by their combination with electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2300/00—Electrolytes
    • H01M2300/0085—Immobilising or gelification of electrolyte
    • 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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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Secondary Cells (AREA)

Abstract

The invention particularly relates to a solid electrolyte-electrode integrated diaphragm and a preparation method thereof, belonging to the technical field of lithium ion batteries, and the method comprises the following steps: adding a thickening agent into a solvent to obtain a viscosity solution; dissolving inorganic ceramic powder in the viscosity solution to obtain a suspension; mixing a binder and a dispersing agent with the suspension to obtain coating slurry; coating the coating slurry on the surface of a pole piece, and then drying to obtain a water-based coating electrode support inorganic diaphragm; wherein the inorganic ceramic powder comprises at least one of LLTO, LATP and LLZO; the non-flammable inorganic component is used, the safety of the lithium battery is improved, the heat resistance and the mechanical property of the diaphragm are improved, the electrolyte absorption and retention performance of the diaphragm are enhanced, the solid electrolyte is used, the ionic conductivity is improved, the internal resistance of the battery is reduced, the diaphragm is not needed, and the preparation is simple.

Description

Solid electrolyte-electrode integrated diaphragm and preparation method thereof
Technical Field
The invention belongs to the technical field of lithium ion batteries, and particularly relates to a solid electrolyte-electrode integrated diaphragm and a preparation method thereof.
Background
The lithium ion battery has the advantages of high battery voltage, high energy density, good cycle performance, long shelf life and the like, and is widely applied to energy storage of portable electronic equipment. However, lithium ion batteries have a major drawback in terms of safety. The number of fire and explosion events triggered by lithium ion batteries has increased over the past decade. It is well known that lithium ion batteries are susceptible to thermal runaway, the primary cause of which is the flammable electrolyte and polymer separator membranes of commercial lithium ion batteries. The low melting point and flammability of polymeric materials are a serious problem. At elevated temperatures, polymer film separators can shrink and melt, causing electrodes to short circuit under overcharge and the like, resulting in thermal runaway.
Compared with the traditional organic diaphragm, the inorganic diaphragm has low raw material cost, and the cost of the diaphragm can be obviously reduced; the mechanical strength is high, and lithium dendrites are difficult to penetrate; the heat-resistant temperature is high, and the structural integrity can be still maintained at 400 ℃; the electrolyte has good affinity, and the existence of a large amount of nano inorganic particles with high porosity and high specific surface area can improve the electrolyte absorption and retention performance of the diaphragm. Al currently used2O3Inorganic ceramic powder, etc., has no ion transport capability, resulting in higher internal resistance of the battery.
Disclosure of Invention
The application aims to provide a double-layer electrode supporting inorganic diaphragm and a preparation method thereof, so as to solve the problem of Al used at present2O3Inorganic ceramic powder, etc., has no ion transport capability, resulting in higher internal resistance of the battery.
The embodiment of the invention provides a preparation method of a solid electrolyte-electrode integrated diaphragm, which comprises the following steps:
dissolving a thickening agent in a solvent to obtain a viscosity solution;
dissolving inorganic ceramic powder in the viscosity solution to obtain a suspension;
mixing a binder and a dispersing agent with the suspension to obtain coating slurry;
coating the coating slurry on the surface of a pole piece, and then drying to obtain a solid electrolyte-electrode integrated diaphragm;
wherein the inorganic ceramic powder comprises at least one of LLTO, LATP and LLZO.
Optionally, the particle size of the inorganic ceramic powder is 0.1 μm to 0.8 μm.
Optionally, the thickener comprises at least one of CMC and bentonite.
Optionally, the solvent includes any one of water, methanol or ethanol.
Optionally, the binder comprises at least one of styrene-butadiene rubber emulsion, acrylonitrile and acrylate emulsion.
Optionally, the dispersant comprises at least one of polyacrylamide, fatty acid polyglycol ester and cellulose derivative.
Optionally, the mass ratio of the inorganic ceramic powder, the binder, the dispersant, the thickener and the solvent is 40-60: 0.2-5: 0.2-0.6: 0.2-0.6: 40-60.
Optionally, the thickness of the coating is 8 μm to 15 μm.
Optionally, the drying temperature is 50-70 ℃, and the drying time is 4-6 h.
Based on the same inventive concept, the embodiment of the invention also provides a solid electrolyte-electrode integrated diaphragm, and the diaphragm is prepared by adopting the preparation method of the solid electrolyte-electrode integrated diaphragm.
One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:
the preparation method of the solid electrolyte-electrode integrated diaphragm provided by the embodiment of the invention comprises the following steps: adding a thickening agent into a solvent to obtain a viscosity solution; dissolving inorganic ceramic powder in the viscosity solution to obtain a suspension; mixing a binder and a dispersing agent with the suspension to obtain coating slurry; coating the coating slurry on the surface of a pole piece, and then drying to obtain a water-based coating electrode support inorganic diaphragm; wherein the inorganic ceramic powder comprises at least one of LLTO, LATP and LLZO; the non-flammable inorganic component is used, the safety of the lithium battery is improved, the heat resistance and the mechanical property of the diaphragm are improved, the electrolyte absorption and retention performance of the diaphragm are enhanced, the solid electrolyte is used, the ionic conductivity is improved, the internal resistance of the battery is reduced, the diaphragm is not needed, and the preparation is simple.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a flow chart of a method provided by an embodiment of the present invention;
FIG. 2 is a graph of battery cycle performance for a separator provided in example 2 of the present invention;
FIG. 3 is a Nyquist diagram for a battery of the separator provided in example 2 of the present invention;
FIG. 4 is a graph of battery cycle performance for the separator provided in comparative example 1 of the present invention;
FIG. 5 is a Nyquist plot for a battery of the separator provided in comparative example 1 of the present invention; .
Detailed Description
The present invention will be described in detail below with reference to specific embodiments and examples, and the advantages and various effects of the present invention will be more clearly apparent therefrom. It will be understood by those skilled in the art that these specific embodiments and examples are for the purpose of illustrating the invention and are not to be construed as limiting the invention.
Throughout the specification, unless otherwise specifically noted, terms used herein should be understood as having meanings as commonly used in the art. Accordingly, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. If there is a conflict, the present specification will control.
Unless otherwise specifically stated, various raw materials, reagents, instruments, equipment and the like used in the present invention are commercially available or can be prepared by existing methods.
In order to solve the technical problems, the general idea of the embodiment of the application is as follows:
according to an exemplary embodiment of the present invention, there is provided a method of preparing a solid electrolyte-electrode integrated separator, the method including:
s1, adding a thickening agent into a solvent to obtain a viscosity solution;
specifically, a certain amount of thickener is added into the solvent, and the stirring device is started to prepare a solution with a certain viscosity.
As an alternative embodiment, the thickener comprises at least one of CMC and bentonite.
As an alternative embodiment, the solvent comprises any one of water, methanol or ethanol.
S2, dissolving inorganic ceramic powder in the viscosity solution to obtain a suspension;
specifically, a certain amount of inorganic ceramic powder is put into a solution with certain viscosity, and a stirring device is started to dissolve the inorganic ceramic powder to prepare a suspension.
As an alternative embodiment, the inorganic ceramic powder includes at least one of LLTO (i.e., lithium lanthanum titanium oxide compound), LATP (i.e., lithium titanium aluminum phosphate), and LLZO (i.e., lithium lanthanum zirconium oxide); the inorganic ceramic powder is submicron, and specifically, the particle size of the inorganic ceramic powder is 0.1-0.8 μm.
The inorganic ceramic powder can be better coated on the pole piece by controlling the particle size of 0.1-0.8 μm, so that proper porosity is obtained, the liquid retention capacity is improved, the uniformity of coating is not facilitated due to overlarge particle size, and the capacity of storing and retaining liquid is reduced due to undersize adverse effect. Preferably, the particle size is 0.3 μm to 0.5. mu.m.
S3, mixing a binder and a dispersing agent with the suspension to obtain coating slurry;
specifically, a proper amount of binder and dispersant are added into the suspension, the ball milling speed is 300-500r/min, and the ball milling time is 4-6h, so that uniform and stable coating slurry is obtained.
As an alternative embodiment, the binder includes at least one of styrene-butadiene rubber emulsion, acrylonitrile type, and acrylate emulsion.
As an alternative embodiment, the dispersant includes at least one of polyacrylamide, fatty acid polyglycol ester, and cellulose derivative.
As an optional embodiment, the mass ratio of the inorganic ceramic powder, the binder, the dispersant, the thickener and the solvent is 40-60: 0.2-5: 0.2-0.6: 0.2-0.6: 40-60.
Controlling the mass ratio of the inorganic ceramic powder, the binder, the dispersant, the thickener and the solvent to be 40-60: 0.2-5: 0.2-0.6: 0.2-0.6: 40-60 is to obtain a suitable slurry viscosity to facilitate coating uniformity.
And S4, coating the coating slurry on the surface of the pole piece, and drying to obtain the solid electrolyte-electrode integrated diaphragm.
As an alternative embodiment, the coating has a thickness of 8 μm to 15 μm.
The control of the coating thickness to be 8-15 μm can isolate the positive electrode and the negative electrode, reduce the risk of short circuit, and the adverse effect of overlarge thickness value is that the transmission distance of the electrolyte is increased and the internal resistance is increased.
As an optional embodiment, the drying temperature is 50-70 ℃, and the drying time is 4-6 h. In this embodiment, the hot air drying is performed by using an oven.
The method does not need a base film, and the mechanism that the slurry is directly coated on the pole piece to realize work is that the essence of the two schemes is to isolate the positive electrode and the negative electrode, the isolation purpose can be achieved by directly passing through an inorganic ceramic layer, and the inorganic ceramic is more compatible with the electrolyte, and the technical difficulty of adopting the method is that: the slurry can penetrate into the gaps of the electrode material during coating, and the internal resistance is increased.
According to another exemplary embodiment of the present invention, there is provided a solid electrolyte-electrode integrated separator manufactured using the method of manufacturing the solid electrolyte-electrode integrated separator as provided above.
The solid electrolyte-electrode integrated separator and the method for producing the same according to the present application will be described in detail below with reference to examples, comparative examples, and experimental data.
Example 1
A method for preparing a solid electrolyte-electrode integrated separator, the method comprising:
1) 0.15g of LaponiteRD/CMC (20:80) was added to 13.35g of water and stirred in a magnetic stirrer at 500r/min to give a viscous solution.
2) Adding 0.15g of LLZO15g and BYK-LPC22092 dispersing agent with the grain diameter of 0.3 mu m into the viscous solution and uniformly stirring;
3) adding 1.5g of BYK-LP C22346 binder and the solution in the step (2) into a ball milling tank, and carrying out ball milling for 4 hours at the rotating speed of 500r/min to obtain coating slurry;
4) and extruding and coating the slurry on the surface of a pole piece, and drying in a 60 ℃ oven for 6h to obtain the solid electrolyte-electrode integrated diaphragm with the coating thickness of 8 microns.
Example 2
A method for preparing a solid electrolyte-electrode integrated separator, the method comprising:
1) 0.15g of LaponiteRD/CMC (20:80) was added to 13.35g of water and stirred in a magnetic stirrer at 500r/min to give a viscous solution.
2) Adding 15g of LATP with the particle size of 0.3 mu m and 0.15g of BYK-LPC22092 dispersant into the viscous solution and uniformly stirring;
3) adding 1.5g of BYK-LP C22346 binder and the solution in the step (2) into a ball milling tank, and carrying out ball milling for 4 hours at the rotating speed of 500r/min to obtain coating slurry;
4) and extruding and coating the slurry on the surface of a pole piece, and drying in a 60 ℃ oven for 6h to obtain the solid electrolyte-electrode integrated diaphragm with the coating thickness of 8 microns.
Example 3
A method for preparing a solid electrolyte-electrode integrated separator, the method comprising:
1) 0.15g of LaponiteRD/CMC (20:80) was added to 13.35g of water and stirred in a magnetic stirrer at 500r/min to give a viscous solution.
2) Adding 15g of LATP with the particle size of 0.5 mu m and 0.15g of BYK-LPC22092 dispersant into the viscous solution and uniformly stirring;
3) adding 1.5g of BYK-LP C22346 binder and the solution in the step (2) into a ball milling tank, and carrying out ball milling for 4 hours at the rotating speed of 500r/min to obtain coating slurry;
4) and extruding and coating the slurry on the surface of a pole piece, and drying in a 60 ℃ oven for 6h to obtain the solid electrolyte-electrode integrated diaphragm with the coating thickness of 8 microns.
Comparative example 1
A method for preparing a solid electrolyte-electrode integrated separator, the method comprising:
1) 0.15g of LaponiteRD/CMC (20:80) was added to 13.35g of water and stirred in a magnetic stirrer at 500r/min to give a viscous solution.
2) Al with a grain size of 0.5 mu m is selected2O315g of the mixture and 0.15g of BYK-LPC22092 dispersing agent are added into the viscous solution and stirred evenly;
3) adding 1.5g of BYK-LP C22346 binder and the solution in the step (2) into a ball milling tank, and carrying out ball milling for 4 hours at the rotating speed of 500r/min to obtain coating slurry;
4) and extruding and coating the slurry on the surface of a pole piece, and drying in a 60 ℃ oven for 6h to obtain the solid electrolyte-electrode integrated diaphragm with the coating thickness of 8 microns.
Examples of the experiments
The separator obtained in examples 1 to 3 and comparative example 1 was assembled into a coin cell and the test results are shown in the following table:
Figure BDA0003315119060000061
as can be seen from the above table, the separator prepared by the method provided in the embodiments of the present application has a low internal resistance and a high capacity retention rate.
One or more technical solutions in the embodiments of the present invention at least have the following technical effects or advantages:
(1) the diaphragm provided by the embodiment of the invention uses non-flammable inorganic components, so that the safety of a lithium battery is improved, the heat resistance and the mechanical property of the diaphragm are improved, and the electrolyte absorption and retention performance of the diaphragm are enhanced;
(2) the diaphragm provided by the embodiment of the invention uses the solid electrolyte, so that the ionic conductivity is improved, and the internal resistance of the battery is reduced;
(3) the diaphragm provided by the embodiment of the invention does not need a diaphragm, and is simple to prepare.
Finally, it should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. A method for preparing a solid electrolyte-electrode integrated separator, the method comprising:
dissolving a thickening agent in a solvent to obtain a viscosity solution;
dissolving inorganic ceramic powder in the viscosity solution to obtain a suspension;
mixing a binder and a dispersing agent with the suspension to obtain coating slurry;
coating the coating slurry on the surface of a pole piece, and then drying to obtain a solid electrolyte-electrode integrated diaphragm;
wherein the inorganic ceramic powder comprises at least one of LLTO, LATP and LLZO.
2. The method for producing a solid electrolyte-electrode integrated separator according to claim 1, wherein the inorganic ceramic powder has a particle size of 0.1 μm to 0.8 μm.
3. The method of manufacturing a solid electrolyte-electrode integrated separator according to claim 1, wherein the thickener includes at least one of CMC and bentonite.
4. The method of manufacturing a solid electrolyte-electrode integrated separator according to claim 1, wherein the solvent includes any one of water, methanol, or ethanol.
5. The method of manufacturing a solid electrolyte-electrode integrated separator according to claim 1, wherein the binder includes at least one of styrene-butadiene rubber emulsion, acrylonitrile, and acrylate emulsion.
6. The method for producing a solid electrolyte-electrode integrated separator according to claim 1, wherein the dispersant includes at least one of polyacrylamide, fatty acid polyglycol ester, and cellulose derivative.
7. The method for producing a solid electrolyte-electrode integrated separator according to claim 1, wherein the mass ratio of the inorganic ceramic powder, the binder, the dispersant, the thickener, and the solvent is 40 to 60: 0.2-5: 0.2-0.6: 0.2-0.6: 40-60.
8. The method of producing a solid electrolyte-electrode integrated separator according to claim 1, wherein the coating has a thickness of 8 μm to 15 μm.
9. The method for preparing a solid electrolyte-electrode integrated separator according to claim 1, wherein the drying temperature is 50 ℃ to 70 ℃ and the drying time is 4h to 6 h.
10. A solid electrolyte-electrode integrated separator, characterized in that the separator is produced by the method for producing a solid electrolyte-electrode integrated separator according to any one of claims 1 to 9.
CN202111228453.6A 2021-10-21 2021-10-21 Solid electrolyte-electrode integrated diaphragm and preparation method thereof Pending CN114171848A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114824665A (en) * 2022-04-06 2022-07-29 东风汽车集团股份有限公司 Solid electrolyte diaphragm and preparation method and application thereof
CN114865224A (en) * 2022-03-30 2022-08-05 东风汽车集团股份有限公司 Diaphragm with high safety performance, coating layer thereof, preparation method and application

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106684292A (en) * 2017-01-18 2017-05-17 清陶（昆山）能源发展有限公司 Ionic conductor ceramic fiber composite diaphragm and preparation method and application thereof
CN109004153A (en) * 2018-06-28 2018-12-14 中国电力科学研究院有限公司 A kind of ultrathin electrodes support type anodic aluminium oxide membrane and preparation method thereof
CN109037549A (en) * 2018-06-28 2018-12-18 中国电力科学研究院有限公司 A kind of preparation process of electrode-supported anodic aluminium oxide membrane
CN111656563A (en) * 2017-09-05 2020-09-11 罗伯特·博世有限公司 Surface coating for ceramic electrolyte particles
CN112201845A (en) * 2020-10-21 2021-01-08 江苏厚生新能源科技有限公司 Ultra-stable interface semi-solid electrolyte battery composite diaphragm and preparation process thereof
CN112436234A (en) * 2019-08-09 2021-03-02 宁德卓高新材料科技有限公司 Ceramic micro-composite diaphragm and preparation method thereof
CN113161684A (en) * 2021-03-18 2021-07-23 河北金力新能源科技股份有限公司 High-temperature-resistant and high-strength diaphragm and preparation method thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106684292A (en) * 2017-01-18 2017-05-17 清陶（昆山）能源发展有限公司 Ionic conductor ceramic fiber composite diaphragm and preparation method and application thereof
CN111656563A (en) * 2017-09-05 2020-09-11 罗伯特·博世有限公司 Surface coating for ceramic electrolyte particles
CN109004153A (en) * 2018-06-28 2018-12-14 中国电力科学研究院有限公司 A kind of ultrathin electrodes support type anodic aluminium oxide membrane and preparation method thereof
CN109037549A (en) * 2018-06-28 2018-12-18 中国电力科学研究院有限公司 A kind of preparation process of electrode-supported anodic aluminium oxide membrane
CN112436234A (en) * 2019-08-09 2021-03-02 宁德卓高新材料科技有限公司 Ceramic micro-composite diaphragm and preparation method thereof
CN112201845A (en) * 2020-10-21 2021-01-08 江苏厚生新能源科技有限公司 Ultra-stable interface semi-solid electrolyte battery composite diaphragm and preparation process thereof
CN113161684A (en) * 2021-03-18 2021-07-23 河北金力新能源科技股份有限公司 High-temperature-resistant and high-strength diaphragm and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114865224A (en) * 2022-03-30 2022-08-05 东风汽车集团股份有限公司 Diaphragm with high safety performance, coating layer thereof, preparation method and application
CN114824665A (en) * 2022-04-06 2022-07-29 东风汽车集团股份有限公司 Solid electrolyte diaphragm and preparation method and application thereof

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