CN109449353A - A kind of novel lithium battery diaphragm - Google Patents
A kind of novel lithium battery diaphragm Download PDFInfo
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- CN109449353A CN109449353A CN201811224175.5A CN201811224175A CN109449353A CN 109449353 A CN109449353 A CN 109449353A CN 201811224175 A CN201811224175 A CN 201811224175A CN 109449353 A CN109449353 A CN 109449353A
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- lithium battery
- electrostatic spinning
- diaphragm
- battery diaphragm
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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
- H01M50/411—Organic material
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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
- H01M50/44—Fibrous material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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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
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/403—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
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/449—Separators, membranes or diaphragms characterised by the material having a layered structure
-
- 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)
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- Manufacturing & Machinery (AREA)
- Nanotechnology (AREA)
- Physics & Mathematics (AREA)
- Composite Materials (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
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Abstract
The invention discloses a kind of novel lithium battery diaphragms, relate generally to field of lithium, manufacture applied to lithium battery, solve that existing lithium battery diaphragm electrolyte compatibility is low, defect of non-refractory, it is characterized in that: specifically a kind of electrostatic spinning diaphragm, for the electrostatic spinning diaphragm using polymer as main material, surface is coated with inorganic ceramic material；It is as follows to prepare step of the invention: 1) prepared by raw material；2) prepared by fiber；3) prepared by electrostatic spinning cloth；4) ceramic material coats；5) it cuts；The present invention can prepare mixed and disorderly nanofiber nethike embrane by electrospinning process, its higher porosity and better absorbent can promote the electrochemistry and circulation performance of diaphragm, and the present invention is by improving the heat-resisting quantity of lithium battery diaphragm to membrane surface coating inorganic ceramic material.
Description
Technical field
The present invention relates to field of lithium, specifically a kind of novel lithium battery diaphragm.
Background technique
Since lithium battery has, energy density is high, have extended cycle life, self-discharge rate is small, memory-less effect and environmentally protective etc.
Advantage, lithium battery product have been widely used for all trades and professions.
Lithium battery diaphragm is the material for connecting and separating battery plus-negative plate, is as one of big critical material of lithium battery four
The insulator of electronics can prevent short circuit, and lithium ion is allowed to pass through, and can also pass through closed pore function when battery overheats
To obstruct the conduction of the electric current in battery.The superiority and inferiority of membrane properties decides the interfacial structure and internal resistance of lithium battery, and then affects
The key characteristics such as capacity, cycle life, the charging and discharging currents density of battery, therefore the raising of membrane properties is for improving battery
Comprehensive performance plays an important role.
Lithium battery diaphragm is haveed the shortcomings that poor to electrolyte compatibility in the prior art, and surface energy is low, is in lazy
Property, non-refractory and hydrophobic disadvantage, it is therefore necessary to which electrophilic solution fluidity is carried out to it can be carried out improvement.
Summary of the invention
The purpose of the present invention is to provide a kind of novel lithium battery diaphragms, to solve mentioned above in the background art ask
Topic.
To achieve the above object, the invention provides the following technical scheme:
A kind of novel lithium battery diaphragm, specifically a kind of electrostatic spinning diaphragm, the electrostatic spinning diaphragm are with polymer
Main material, surface are coated with inorganic ceramic material；The polymer has the characteristics that good hydrophilic property, surface can high, Ke Yiti
Compatibility of the high lithium battery diaphragm to electrolyte；The inorganic ceramic material has the characteristics that resistant to high temperature, and lithium battery can be improved
The temperature tolerance of diaphragm.
As a further solution of the present invention: the polymer is Kynoar, Kynoar-hexafluoropropene, gathers
One of methyl acrylate is a variety of.
As further scheme of the invention: the inorganic ceramic material is one kind of three silica or silica.
A kind of preparation method of such as above-mentioned novel lithium battery diaphragm, the following steps are included:
1) prepared by raw material: the mixed of dimethylformamide, tetrahydrofuran and acetone is added in powdered polymer after dry
In bonding solvent, it is heated to 50 DEG C of stirrings in water-bath to there is homogeneous solution, then adds granules of polystyrene, carries out later
Mechanical stirring 20min, re-ultrasonic dispersion handle 15min, make nano particle dispersion sufficiently, obtain spinning solution；
2) prepared by fiber: the spinning solution being drawn into polymer by the electrostatic interaction of electric field by method of electrostatic spinning and is surpassed
Fine fibre；
3) prepared by electrostatic spinning cloth: by the way of controlling dispersion liquid total amount, tunica fibrosa thickness control that spinning is obtained
It within the scope of 40-50nm, is placed in a vacuum drying oven, reduced pressure treatment 8h under room temperature, until no solvent residue in film, obtains electrostatic
Spinning cloth；
4) ceramic material coats: polyimides and inorganic ceramic material powder are added to water and N- dimethyl acetamide
In mixed solution, then mixed solution obtained is coated in the two sides of electrostatic spinning cloth, then in drying at room temperature by ball milling dispersion
10min evaporates solvent, then more than 80 DEG C of vacuum drying for 24 hours, obtains ceramic coated electrostatic spinning cloth；
5) cut: it is 19mm's that diameter is obtained after cutting using perforating press to the ceramic coated electrostatic spinning cloth
Standard diaphragm.
Further, in step 1), the volume ratio of the in the mixed solvent dimethylformamide, tetrahydrofuran and acetone is
7:1:3。
Further, in step 1), 10-12 parts of polymethyl acrylate are added in every 100 mass parts of mixed solvent.
Further, 0-3 parts of granules of polystyrene is added in step 1), in every 100 mass parts of mixed solvent.
Further, in the water and N- dimethyl acetamide mixed solution water and N- dimethyl acetamide volume
Than for 5:95.
A kind of lithium ion battery using above-mentioned novel lithium battery diaphragm.
Compared with prior art, the beneficial effects of the present invention are:
1, the present invention can prepare mixed and disorderly nanofiber nethike embrane by electrospinning process, higher porosity and more
Good absorbent can promote the electrochemistry and circulation performance of diaphragm.
2, the present invention is by improving the heat-resisting quantity of lithium battery diaphragm to membrane surface coating inorganic ceramic material.
Specific embodiment
Technical solution of the present invention is described in more detail With reference to embodiment.
Embodiment 1
A kind of novel lithium battery diaphragm, using Kynoar as substrate by electrostatic spinning hair production electrostatic spinning every
Film；The electrostatic spinning membrane surface is coated with three silica.
1) prepared by raw material: powdered Kynoar is dry, it is poly- that 12 mass parts then are added according to every 100 mass parts
The in the mixed solvent that volume ratio is the dimethylformamide of 7:1:2, tetrahydrofuran and acetone is added in the ratio of vinylidene, in water
It is heated to 50 DEG C of stirrings in bath to there is homogeneous solution, then adds 3 mass parts poly- third according to every 100 mass parts mixed solvent
The ratio of e pioic acid methyl ester adds granules of polystyrene, carries out mechanical stirring 20min later, and re-ultrasonic dispersion handles 15min, makes to receive
Rice grain dispersion sufficiently, obtains spinning solution；
2) prepared by fiber: the spinning solution being drawn into polymer by the electrostatic interaction of electric field by method of electrostatic spinning and is surpassed
Fine fibre；
3) prepared by electrostatic spinning cloth: by the way of controlling dispersion liquid total amount, tunica fibrosa thickness control that spinning is obtained
It in 40nm range, is placed in a vacuum drying oven, reduced pressure treatment 8h under room temperature, until no solvent residue in film, obtains electrostatic spinning
Cloth；
4) ceramic material coats: polyimides and silicon dioxide powder being added to water and the mixing of N- dimethyl acetamide is molten
In liquid (volume ratio 5:95), then mixed solution obtained is coated in the two sides of electrostatic spinning cloth, then in room by ball milling dispersion
The dry 10min of temperature evaporates solvent, then more than 80 DEG C of vacuum drying for 24 hours, obtains ceramic coated electrostatic spinning cloth；
5) cut: it is 19mm's that diameter is obtained after cutting using perforating press to the ceramic coated electrostatic spinning cloth
Standard diaphragm.
A kind of lithium ion battery, novel lithium battery diaphragm made by the above method.
Embodiment 2
A kind of novel lithium battery diaphragm passes through the electrostatic of electrostatic spinning hair production with Kynoar-hexafluoropropene substrate
Spinning diaphragm；The electrostatic spinning membrane surface is coated with silica material.
1) prepared by raw material: powdered Kynoar-hexafluoropropene is dry, then added according to every 100 mass parts
Dimethylformamide, the tetrahydrofuran and third that volume ratio is 7:1:2 is added in 10 mass parts Kynoar-hexafluoropropene ratio
The in the mixed solvent of ketone is heated to 50 DEG C of stirrings to there is homogeneous solution in water-bath, then mixes according to every 100 mass parts
The ratio that solvent adds 1 mass parts polymethyl acrylate adds granules of polystyrene, carries out mechanical stirring 20min later, then surpass
Sound decentralized processing 15min makes nano particle dispersion sufficiently, obtains spinning solution；
2) prepared by fiber: the spinning solution being drawn into polymer by the electrostatic interaction of electric field by method of electrostatic spinning and is surpassed
Fine fibre；
3) prepared by electrostatic spinning cloth: by the way of controlling dispersion liquid total amount, tunica fibrosa thickness control that spinning is obtained
It within the scope of 50nm, is placed in a vacuum drying oven, reduced pressure treatment 8h under room temperature, until no solvent residue in film, obtains Static Spinning
Silk cloth；
4) ceramic material coats: polyimides and silicon oxide powder being added to water and the mixing of N- dimethyl acetamide is molten
In liquid (volume ratio 5:95), then mixed solution obtained is coated in the two sides of electrostatic spinning cloth, then in room by ball milling dispersion
The dry 10min of temperature evaporates solvent, then more than 80 DEG C of vacuum drying for 24 hours, obtains ceramic coated electrostatic spinning cloth；
5) cut: it is 19mm's that diameter is obtained after cutting using perforating press to the ceramic coated electrostatic spinning cloth
Standard diaphragm.
A kind of lithium ion battery, novel lithium battery diaphragm made by the above method.
Embodiment 3
A kind of novel lithium battery diaphragm, using polymethyl acrylate as substrate by electrostatic spinning hair production electrostatic spinning every
Film；The electrostatic spinning membrane surface is coated with three silica.
1) prepared by raw material: powdered polymethyl acrylate is dry, then 11 mass parts are added according to every 100 mass parts
The in the mixed solvent that volume ratio is the dimethylformamide of 7:1:2, tetrahydrofuran and acetone is added in the ratio of polymethyl acrylate,
It is heated to 50 DEG C of stirrings in water-bath to there is homogeneous solution, then adds 0 mass parts according to every 100 mass parts mixed solvent
The ratio of polymethyl acrylate adds granules of polystyrene, carries out mechanical stirring 20min later, and re-ultrasonic dispersion handles 15min,
Make nano particle dispersion sufficiently, obtains spinning solution；
2) prepared by fiber: the spinning solution being drawn into polymer by the electrostatic interaction of electric field by method of electrostatic spinning and is surpassed
Fine fibre；
3) prepared by electrostatic spinning cloth: by the way of controlling dispersion liquid total amount, tunica fibrosa thickness control that spinning is obtained
It within the scope of 50nm, is placed in a vacuum drying oven, reduced pressure treatment 8h under room temperature, until no solvent residue in film, obtains Static Spinning
Silk cloth；
4) ceramic material coats: polyimides and silicon dioxide powder being added to water and the mixing of N- dimethyl acetamide is molten
In liquid (volume ratio 5:95), then mixed solution obtained is coated in the two sides of electrostatic spinning cloth, then in room by ball milling dispersion
The dry 10min of temperature evaporates solvent, then more than 80 DEG C of vacuum drying for 24 hours, obtains ceramic coated electrostatic spinning cloth；
5) cut: it is 19mm's that diameter is obtained after cutting using perforating press to the ceramic coated electrostatic spinning cloth
Standard diaphragm.
A kind of lithium ion battery, novel lithium battery diaphragm made by the above method.
Embodiment 4
A kind of novel lithium battery diaphragm passes through Static Spinning using Kynoar and Kynoar-hexafluoropropene as substrate
The electrostatic spinning diaphragm of silk hair production；The electrostatic spinning membrane surface is coated with three silica or silica material.
1) prepared by raw material: powdered Kynoar and Kynoar-hexafluoropropene is dry, then according to every
100 mass parts add 12 mass parts Kynoar and volume ratio is added as 7:1:2's in Kynoar-hexafluoropropene ratio
It is uniformly molten to occurring to be heated to 50 DEG C of stirrings in water-bath for the in the mixed solvent of dimethylformamide, tetrahydrofuran and acetone
Then liquid adds granules of polystyrene according to the ratio that every 100 mass parts mixed solvent adds 2 mass parts polymethyl acrylate,
Mechanical stirring 20min is carried out later, and re-ultrasonic dispersion handles 15min, makes nano particle dispersion sufficiently, obtains spinning solution；
2) prepared by fiber: the spinning solution being drawn into polymer by the electrostatic interaction of electric field by method of electrostatic spinning and is surpassed
Fine fibre；
3) prepared by electrostatic spinning cloth: by the way of controlling dispersion liquid total amount, tunica fibrosa thickness control that spinning is obtained
It within the scope of 45nm, is placed in a vacuum drying oven, reduced pressure treatment 8h under room temperature, until no solvent residue in film, obtains Static Spinning
Silk cloth；
4) ceramic material coats: polyimides and silicon oxide powder being added to water and the mixing of N- dimethyl acetamide is molten
In liquid (volume ratio 5:95), then mixed solution obtained is coated in the two sides of electrostatic spinning cloth, then in room by ball milling dispersion
The dry 10min of temperature evaporates solvent, then more than 80 DEG C of vacuum drying for 24 hours, obtains ceramic coated electrostatic spinning cloth；
5) cut: it is 19mm's that diameter is obtained after cutting using perforating press to the ceramic coated electrostatic spinning cloth
Standard diaphragm.
A kind of lithium ion battery, novel lithium battery diaphragm made by the above method.
Comparative example 1
Compared with Example 1, the lithium battery diaphragm substrate is polyalkene diaphragm；Other and embodiment 1 are identical.
The technology of preparing of the polyalkene diaphragm is the prior art.
Comparative example 2
Compared with Example 1, the uncoated inorganic ceramic material in lithium battery diaphragm surface；Other and embodiment 1 are identical.
Comparative example 3
Compared with Example 1, the lithium battery diaphragm substrate is polyalkene diaphragm, and the uncoated nothing in lithium battery diaphragm surface
Machine ceramic material；Other and embodiment 1 are identical.
Comparative example 4
Existing product.
Performance test
In conjunction with the embodiments 1-4 and comparative example 1-4 by electron microscope, absorbent test, electrochemical property test and
High temperature cyclic performance, which is tested, analyzes the comprehensive of diaphragm to the lithium battery diaphragm progress test synthesis of embodiment 1-4 and comparative example 1-4
Performance is closed, specific method is by electron microscope observation phase porosity, by the way that the diaphragm of preparation is cut into 2cm × 2cm examination
Sample, drying weigh up the quality of each sample, then put it into LiPF6 electrolyte and be impregnated with 2h or more, blot surface with filter paper and overflow
Electrolyte after, weigh the quality of hygrometric state diaphragm, pass through calculate imbibition rate；
Result is obtained through overtesting:
1 experimental result of table
1) the lithium battery diaphragm porosity in comparative example 3 and imbibition rate have respectively reached 60.2% and 456%, 80 DEG C of high temperature
200 charging and discharging capacities of lower charge and discharge are 50.4%.
2) the lithium battery diaphragm porosity in comparative example 2 and imbibition rate have respectively reached 70.2% and 884%, 80 DEG C of high temperature
200 charging and discharging capacities of lower charge and discharge are 52.3%, and relative to comparative example 3, porosity improves 10%, and imbibition rate improves
1 times.
3) the lithium battery diaphragm porosity in comparative example 1 and imbibition rate have respectively reached 61.2% and 485%, 80 DEG C of high temperature
200 charging and discharging capacities of lower charge and discharge are 80.4%, and relative to comparative example 3, porosity and imbibition rate raising are unobvious, still
Heat-resisting quantity improves 60%.
4) the lithium battery diaphragm porosity in embodiment 1 and imbibition rate have respectively reached 75.2% and 974%, 80 DEG C of high temperature
200 charging and discharging capacities of lower charge and discharge are 84.4%, and relative to comparative example 3, porosity improves 15.2%, and imbibition rate improves
518%, heat-resisting quantity improves 68.2%.
Better embodiment of the invention is explained in detail above, but the present invention is not limited to above-mentioned embodiment party
Formula within the knowledge of one of ordinary skill in the art can also be without departing from the purpose of the present invention
It makes a variety of changes.
Claims (9)
1. a kind of novel lithium battery diaphragm, which is characterized in that the new types of diaphragm is a kind of electrostatic spinning diaphragm；The Static Spinning
For silk diaphragm using polymer as main material, surface is coated with inorganic ceramic material.
2. novel lithium battery diaphragm according to claim 1, which is characterized in that the polymer is Kynoar, gathers
One of biasfluoroethylene-hexafluoropropylene, polymethyl acrylate are a variety of.
3. novel lithium battery diaphragm according to claim 1 to 2, which is characterized in that the inorganic ceramic material is three
One kind of silica or silica.
4. a kind of preparation method of the novel lithium battery diaphragm as described in claim 1-3 is any, which is characterized in that including walking as follows
It is rapid:
1) prepared by raw material: dimethylformamide, tetrahydrofuran and acetone is added in powdered polymer mixing after dry is molten
In agent, it is heated to 50 DEG C of stirrings in water-bath to there is homogeneous solution, then adds granules of polystyrene, carries out later mechanical
20min is stirred, re-ultrasonic dispersion handles 15min, makes nano particle dispersion sufficiently, obtains spinning solution；
2) prepared by fiber: the spinning solution being drawn into fine polymer fibre by the electrostatic interaction of electric field by method of electrostatic spinning
Dimension；
3) prepared by electrostatic spinning cloth: by the way of controlling dispersion liquid total amount, the tunica fibrosa thickness control that spinning is obtained is in 40-
It within the scope of 50nm, is placed in a vacuum drying oven, reduced pressure treatment 8h under room temperature, until no solvent residue in film, obtains electrostatic spinning
Cloth；
4) ceramic material coats: polyimides and inorganic ceramic material powder being added to water and N- dimethyl acetamide mixes
In solution, then mixed solution obtained is coated in the two sides of electrostatic spinning cloth, then in drying at room temperature 10min by ball milling dispersion
Solvent is evaporated, then more than 80 DEG C of vacuum drying for 24 hours, obtains ceramic coated electrostatic spinning cloth；
5) it cuts: obtaining the standard that diameter is 19mm after cutting using perforating press to the ceramic coated electrostatic spinning cloth
Diaphragm.
5. the preparation method of novel lithium battery diaphragm according to claim 4, which is characterized in that described mixed in step 1)
The volume ratio of dimethylformamide, tetrahydrofuran and acetone is 7:1:3 in bonding solvent.
6. the preparation method of novel lithium battery diaphragm according to claim 5, which is characterized in that described mixed in step 1)
10-12 parts of polymethyl acrylate are added in every 100 mass parts of bonding solvent.
7. the preparation method of novel lithium battery diaphragm according to claim 6, in step 1), the mixed solvent every 100
0-3 parts of granules of polystyrene is added in mass parts.
8. the preparation method of novel lithium battery diaphragm according to claim 7, in step 4), the water and N- dimethyl
The volume ratio of water and N- dimethyl acetamide is 5:95 in acetamide mixed solution.
9. a kind of lithium ion battery using any novel lithium battery diaphragm of claim 1-3.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811224175.5A CN109449353A (en) | 2018-10-19 | 2018-10-19 | A kind of novel lithium battery diaphragm |
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|---|---|---|---|
| CN201811224175.5A CN109449353A (en) | 2018-10-19 | 2018-10-19 | A kind of novel lithium battery diaphragm |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110224098A (en) * | 2019-06-10 | 2019-09-10 | 合肥众禾动力新能源科技有限公司 | A kind of lithium ion battery coil core |
| CN110518177A (en) * | 2019-07-15 | 2019-11-29 | 青岛大学 | SiO2/ PVDF-HFP composite cellulosic membrane and its preparation method and application |
| CN112510320A (en) * | 2020-11-18 | 2021-03-16 | 东莞市魔方新能源科技有限公司 | Preparation method of diaphragm for lithium ion battery, diaphragm and lithium ion battery |
| CN113140868A (en) * | 2021-04-22 | 2021-07-20 | 中南大学 | In-situ inorganic-organic composite spinning diaphragm and preparation method and application thereof |
| CN113550139A (en) * | 2020-04-24 | 2021-10-26 | 深圳市劢全新材料科技有限责任公司 | Preparation method of aromatic polyester electrospun membrane compounded with ceramic |
| CN113594634A (en) * | 2021-06-18 | 2021-11-02 | 苏州大学 | High-ionic-conductivity lithium battery diaphragm with self-closing function and preparation method thereof |
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| WO2016165633A1 (en) * | 2015-04-14 | 2016-10-20 | Byd Company Limited | Polymer composite membrane and preparation method thereof, gel electrolyte and lithium ion battery having the same |
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| CN106638007A (en) * | 2016-12-22 | 2017-05-10 | 烟台森森环保科技有限公司 | Electrospinning technique-based ceramic diaphragm and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110224098A (en) * | 2019-06-10 | 2019-09-10 | 合肥众禾动力新能源科技有限公司 | A kind of lithium ion battery coil core |
| CN110518177A (en) * | 2019-07-15 | 2019-11-29 | 青岛大学 | SiO2/ PVDF-HFP composite cellulosic membrane and its preparation method and application |
| CN110518177B (en) * | 2019-07-15 | 2022-05-06 | 青岛大学 | SiO2PVDF-HFP composite fiber membrane and preparation method and application thereof |
| CN113550139A (en) * | 2020-04-24 | 2021-10-26 | 深圳市劢全新材料科技有限责任公司 | Preparation method of aromatic polyester electrospun membrane compounded with ceramic |
| CN112510320A (en) * | 2020-11-18 | 2021-03-16 | 东莞市魔方新能源科技有限公司 | Preparation method of diaphragm for lithium ion battery, diaphragm and lithium ion battery |
| CN113140868A (en) * | 2021-04-22 | 2021-07-20 | 中南大学 | In-situ inorganic-organic composite spinning diaphragm and preparation method and application thereof |
| CN113594634A (en) * | 2021-06-18 | 2021-11-02 | 苏州大学 | High-ionic-conductivity lithium battery diaphragm with self-closing function and preparation method thereof |
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