CN109524595A - A kind of complex lithium electric separator and its preparation method and application with tack coating - Google Patents
A kind of complex lithium electric separator and its preparation method and application with tack coating Download PDFInfo
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- CN109524595A CN109524595A CN201811273284.6A CN201811273284A CN109524595A CN 109524595 A CN109524595 A CN 109524595A CN 201811273284 A CN201811273284 A CN 201811273284A CN 109524595 A CN109524595 A CN 109524595A
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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
- H01M50/403—Manufacturing processes of separators, membranes or diaphragms
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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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- 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 present invention relates to a kind of complex lithium electric separator and its preparation method and application with tack coating, this complex lithium electric separator do basement membrane with micro-pore septum material, and membrane surface is coated with high temperature resistant organic emulsion coating.Occur to melt and micropore is made to disappear at a certain temperature using micro-pore septum material, assigns the good hot closed pore characteristic of composite diaphragm；Using high temperature resistant organic emulsion coating, stable physicochemical property assigns the good thermal stability of composite diaphragm at high temperature.The electrolyte compatibility for improving diaphragm by sodium naphthalene solution surface modification, effectively increases the thermal safety and charge-discharge performance of lithium ion battery, and this method is easy to operate, low in cost, easily extensive large scale production.
Description
Technical field
The present invention relates to battery diaphragm preparation fields, especially high temperature resistant complex lithium electric separator and preparation method thereof.
Background technique
Countries in the world all promote New Energy Industry to unprecedented strategic height, and motive force of development battery is by people's
Common concern.As the significant components of lithium ion battery, diaphragm be used to be isolated battery plus-negative plate, while allow conductive ion logical
It crosses, guarantees that battery completes charge and discharge process, performance has great influence to battery.One of four big components as lithium battery,
Become the commercialization lithium electric separator of current main-stream using polyethylene and polypropylene as the micro-pore septum of representative.But in view of polyolefine material
The problems such as low melting point of itself and surface can be low, such microporous barrier can not be supplied to the enough safeties of lithium ion battery, in recent years
Come, a lot of on fire, explosion accidents relevant to lithium-ion battery systems has occurred, the safety of lithium battery directly affects it into one
The market development of step, the new types of diaphragm that exploitation meets next-generation dynamic lithium battery become research hotspot, especially improvement diaphragm
Heat-resisting quantity and electrolyte compatibility become two big urgent needs and urgently solve the problems, such as.
Polyolefin surfaces coating diaphragm is the focus place of current diaphragm application development, and membrane surface uses coat advantage
Obviously.The coat thermal stability that improves diaphragm first, as 180 DEG C of bodies of ceramic coated metacneme high temperature keep still good
Good, avoidable diaphragm retracts cause internal short-circuit, are obviously improved battery security；Followed by improve leaching of the diaphragm to electrolyte
Lubricant nature is conducive to internal resistance of cell reduction, discharge power is promoted；Then there is that can prevent or reduce Membrane Oxygenation, it is high to be conducive to cooperation
The operation of positive polarity and extension battery cycle life etc..
But traditional coating material is concentrated mainly on inorganic ceramic material, and addition certain proportion is needed in coating slurry
Adhesive, to keep the mechanically stable of ceramic particle and polyolefin base membrane.The study found that adhesive can destroy it is polyolefin-based
Original microcellular structure of film significantly reduces the porosity and ion transport efficiency of composite membrane, while promoting battery thermal safety
Battery charge and discharge performance is caused to deteriorate.Therefore, exploitation novel fire resistant coating diaphragm and Study on Preparation Technology are also very urgent, need
To regulate and control from coating material and coating processes etc. study deeper into ground.
Summary of the invention
The deficiency of heat resistance existing for polyolefin composite diaphragm and coating slurry are coated to micro- knot of composite diaphragm based on tradition
It is configured to the problems such as destroying, the present invention provides a kind of complex lithium electric separator with tack coating, does with micro-pore septum material
Basement membrane, membrane surface are coated with high temperature resistant (> 150 DEG C) organic emulsion coating, the mass percent concentration of high temperature resistant organic emulsion
For 12%-70%.
Further, complex lithium electric separator material surface also uses naphthalene sodium solution to be modified processing, compound to increase
The hydrophilic radical of membrane surface, sodium naphthalene solution quality percent concentration are 6-30%, and solvent is tetrahydrofuran.
Further, high temperature resistant organic emulsion is dispersed, the good nanometer organic micro-spheres dispersion liquid of film forming, specifically
, high temperature resistant organic emulsion can be the one or more of polytetrafluoroethylene (PTFE), polyacrylate or silicon the third rubber macromolecule emulsion
Mixing.Particle close-packed arrays in macromolecule emulsion form coating resistant to high temperature, and particle size range is 0.04 μm -5 μm, coating
It can be made of single particle size polymer particles, it can also be by different-grain diameter polymer particles gradation composition, tack major embodiment
Additional adhesives component is free of in coating solution.Wherein, ptfe emulsion mass percent concentration is 20-35%；Poly- third
Olefin(e) acid ester quality of the emulsion percent concentration is 60%；Silicon the third rubber latex mass percent concentration is 25%.
Further, micro-pore septum material is polyethylene, polypropylene or Kynoar.
The preparation method of the present invention also provides a kind of complex lithium electric separator material with tack coating, including walk as follows
It is rapid:
(1) according to the hot closed pore temperature of the diaphragm of setting, choosing, there is the micro-pore septum material of corresponding fusing point to do basement membrane；
(2) high temperature resistant organic emulsion coating is coated in membrane surface.
(3) the cated basement membrane of coating of surface obtained by step (2) is put into naphthalene sodium solution and is modified processing, naphthalene
Sodium solution mass percent concentration is 6-30%, and solvent is tetrahydrofuran.
Further, high temperature resistant organic emulsion be the third rubber latex of polytetrafluoroethylene (PTFE), polyacrylate or silicon one kind or
Several mixing.
Further, above-mentioned preparation method further includes one or more in following (a)-(f):
It (a) further include the micro-pore septum chosen using washes of absolute alcohol in step (1), to ensure membrane surface foot
Enough cleanings, avoid coating existing defects, are dried for standby after cleaning；
(b) micro-pore septum material is the diaphragm material with abundant cellular structure, and cellular structure includes micron openings and nanometer
Hole, average pore size scope are 0.03 μm -50 μm, porosity ranges 25%-90%, and basement membrane thickness is 6 μm -40 μm；
It (c) further include that high temperature resistant organic emulsion is pre-processed into 20- in the ultrasonic wave that frequency is 40-70KHZ in step (2)
Then 30min is coated in membrane surface；
(d) it is coated in step (2) using dip-coating method, electrostatic spray, pneumatic spraying method；
(e) unilateral side of micropore basal membrane and bilateral are coated in step (2), the thickness of coating can be according to composite diaphragm
Heat-resisting quantity requires to be designed, and One-sided coatings thickness range is 0.5 μm -8 μm；
(f) surface coats cated basement membrane after taking out in naphthalene sodium solution in step (3), with washes of absolute alcohol 3-
8 times, the then 60-100 DEG C of drying in vacuum drying oven, roller process obtains high temperature resistant complex lithium electric separator.
Beneficial effect
The present invention using the high temperature-resistant polymer lotion with tack as coating slurry, in various structures such as polyolefin and
The micropore basal membrane surface of material prepares new heat resistant coatings.Under the premise of not destroying basement membrane original cellular structure, it is obviously improved
Thermal safety, electrolyte compatibility and the battery charge and discharge performance of composite diaphragm.The complex lithium prepared using method of the invention
Electric separator has hot closed pore characteristic and thermal structure stability characteristic (quality), and heat-resisting quantity is strong, lyophily is good and excellent combination property.Heat is closed
Pore property be be more than safe temperature when, such as larger than 100 DEG C and less than 180 DEG C, the eutectic dot characteristics of basement membrane keep composite diaphragm micro-
Hole disappears, and blocks the ion channels of inside battery, and thermal structure stability characteristic (quality) is such as larger than 100 DEG C outside safe temperature range,
Diaphragm can still keep stable structure, keep stablizing including the stable size with composite diaphragm of high-temperature resistant coating structure；Simultaneously originally
The raw material sources used in invention are extensive, and preparation process is simple, can large-scale application in next-generation high-performance lithium ion power electricity
Pond dedicated diaphragm.
Specific embodiment
Experimental method used in following embodiments is conventional method unless otherwise specified.
Material as used in the following examples etc., is commercially available unless otherwise specified.
Following embodiments and its illustrate are used to explain the present invention, and are not constituted improper limitations of the present invention.
In following embodiments unless otherwise specified, the percentage being related to is mass percent.
Embodiment 1
Using with a thickness of 25 μm, average pore size 130nm, porosity be 42% polypropylene micropore diaphragm as basement membrane, the base
Film successively respectively cleans 15min in dehydrated alcohol and deionized water, and then (vacuum degree 60kPa) is dry in 80 DEG C of vacuum drying oven
It is dry, and the bar samples that length and width is respectively 10cm and 4cm are cut into, it is spare.
By concentration be 35% polytetrafluoroethylene (PTFE) (average particle diameter is about 60nm) lotion in the ultrasound that frequency is 50KHZ
20min is handled in wave, then above-mentioned micropore basal membrane sample strip is slowly immersed in ptfe emulsion, and continuation is in frequency
3min is handled in the ultrasonic wave of 15KHZ, the micropore basal membrane after being then slowly withdrawn coating, and it is dried at room temperature for 120min.
Sodium naphthalene (the C that compound concentration is 10%10H8Na) solution, wherein solvent is tetrahydrofuran, by above-mentioned coating
Micropore basal membrane be slowly put into naphthalene sodium solution, stand and taken out after keeping 30s, and wash 5 times repeatedly in dehydrated alcohol, most
(vacuum degree 60kPa) is dried in 60 DEG C of vacuum drying oven afterwards, the final high temperature resistant complex lithium electricity for obtaining the present embodiment every
Film.
Comparison is tested for the property to above-mentioned complex lithium electric separator and polypropylene microporous basement membrane:
Coating layer thickness: coating is dual coating, and every side thickness is about 2.5 μm；
Heat-resisting quantity: diaphragm sample keeps 0.5h at 140 DEG C, and the percentage reduction of area of composite diaphragm is 2.2%, polypropylene
The shrinking percentage of micropore basal membrane is 14.6%；
Electrolyte compatibility: the LiP F of 1M is utilized6Conventional electrolysis liquid test diaphragm contact angle and imbibition rate, it is compound every
The contact angle of film is 32.1 °, imbibition rate 175%, and the contact angle of polypropylene microporous basement membrane is 46.2 °, imbibition rate 114%；
Battery performance test result: under 0.5C current condition, battery after 100 times are filled cycle charge-discharge, it is compound every
The capacity retention ratio that film assembles battery is 97.4%, and the conservation rate that polypropylene microporous basement membrane assembles battery is 96.5%.
Embodiment 2
Using with a thickness of 12 μm, average pore size 65nm, porosity be 40% polyethylene micropore diaphragm as basement membrane, the basement membrane
15min is successively respectively cleaned in ethyl alcohol and deionized water, then (vacuum degree 60kPa) is dry in 60 DEG C of vacuum drying oven, and
The bar samples that length and width is respectively 10cm and 4cm are cut into, it is spare.
It in frequency is the super of 70KHZ by polytetrafluoroethylene (PTFE) (average particle diameter the is about 110nm) lotion that concentration is 20%
20min is handled in sound wave, then above-mentioned micropore basal membrane sample strip is slowly immersed in ptfe emulsion, and continuation is in frequency
5min is handled in the ultrasonic wave of 20KHZ, the micropore basal membrane after being then slowly withdrawn coating, and it is dried at room temperature for 120min.
The naphthalene sodium solution that compound concentration is 6%, wherein solvent is tetrahydrofuran, by the micropore basal membrane of above-mentioned coating
It is slowly put into naphthalene sodium solution, stands and taken out after keeping 90s, and washed repeatedly in dehydrated alcohol 3 times, finally at 60 DEG C
(vacuum degree 60kPa) is dried in vacuum drying oven, the final high temperature resistant complex lithium electric separator for obtaining the present embodiment.
Comparison is tested for the property to above-mentioned composite diaphragm and polyethylene micropore basement membrane:
Coating layer thickness: coating is dual coating, and every side thickness is about 1.6 μm；
Heat-resisting quantity: diaphragm sample keeps 0.5h at 140 DEG C, and the percentage reduction of area of composite diaphragm is 20.5%, poly- second
Alkene micropore basal membrane melts completely, shrinking percentage 100%；
Electrolyte compatibility: the LiP F of 1M is utilized6Conventional electrolysis liquid test diaphragm contact angle and imbibition rate, it is compound every
The contact angle of film is 25.2 °, imbibition rate 168%, and the contact angle of polyethylene micropore basement membrane is 41.4 °, imbibition rate 121%；
Battery performance test result: under 0.5C current condition, battery after 100 times are filled cycle charge-discharge, it is compound every
The capacity retention ratio that film assembles battery is 98.2%, and the conservation rate that polyethylene micropore basement membrane assembles battery is 96.4%.
Embodiment 3
, as basement membrane, to be somebody's turn to do with a thickness of the polyvinylidene fluoride diaphragm that 40 μm, average pore size are 15 μm, porosity is 78%
Basement membrane cleans 5min in dehydrated alcohol, and then (vacuum degree 60kPa) is dry in 100 DEG C of vacuum drying oven, and cut growth,
Width is respectively the bar samples of 10cm and 4cm, spare.
It in frequency is the super of 40KHZ by polyacrylate (average particle diameter the is about 2.4 μm) lotion that concentration is 60%
30min is handled in sound wave, is then injected into the plastics needle tubing of 10ml, uses aperture for the spinning syringe needle of 0.8mm, with 6ml/
The fltting speed of min, using electrostatic spraying in fibre diaphragm single side surface prepares coating under the electrostatic potential of 15KV.
The naphthalene sodium solution that compound concentration is 30%, wherein solvent is tetrahydrofuran, and the basement membrane of above-mentioned coating is delayed
Slow play enters in naphthalene sodium solution, stands and takes out after keeping 10s, and wash repeatedly in dehydrated alcohol 8 times, finally at 100 DEG C
(vacuum degree 60kPa) is dried in vacuum drying oven, the final high temperature resistant complex lithium electric separator for obtaining the present embodiment.
Comparison is tested for the property to above-mentioned composite diaphragm and polyvinylidene fluoride basement membrane:
Coating layer thickness: coating is One-sided coatings, and thickness is about 6 μm；
Heat-resisting quantity: diaphragm sample keeps 0.5h at 140 DEG C, and the percentage reduction of area of composite diaphragm is 0.5%, gathers inclined fluorine
Vinyl fiber basement membrane shrinking percentage is 8.9%；
Electrolyte compatibility: the LiP F of 1M is utilized6Conventional electrolysis liquid test diaphragm contact angle and imbibition rate, it is compound every
The contact angle of film is 7.2 °, imbibition rate 457%, and the contact angle of polyvinylidene fluoride basement membrane is 8.4 °, and imbibition rate is
431%；
Battery performance test result: under 0.5C current condition, battery after 100 times are filled cycle charge-discharge, it is compound every
The capacity retention ratio that film assembles battery is 97.7%, and the conservation rate that polyvinylidene fluoride basement membrane assembles battery is 96.1%.
Embodiment 4
Using with a thickness of the polypropylene non-woven cloth diaphragm that 20 μm, average pore size are 40 μm, porosity is 55% as basement membrane, the base
Film cleans 5min in dehydrated alcohol, and then (vacuum degree 60kPa) is dry in 80 DEG C of vacuum drying oven, and is cut into length and width
The bar samples of respectively 10cm and 4cm, it is spare.
By concentration be 25% the third rubber of silicon (average particle diameter is about 1.6 μm) lotion and concentration be 25% polytetrafluoro
Ethylene (average particle diameter is about 0.12 μm) lotion mixes in equal volume, and handles in the ultrasonic wave that frequency is 55KHZ
Then 30min is synchronized in non-woven fabrics basement membrane two sides using the method for pneumatic spraying and is prepared heat resistant coating, wherein compression pressure
For 4.5 atmospheric pressure, spray head bore dia is 0.6mm.
The naphthalene sodium solution that compound concentration is 8%, wherein solvent is tetrahydrofuran, and the basement membrane of above-mentioned coating is slow
It is put into naphthalene sodium solution, stands and taken out after keeping 25s, and washed repeatedly in dehydrated alcohol 5 times, finally in 80 DEG C of vacuum
(vacuum degree 60kPa) is dried in baking oven, the final high temperature resistant complex lithium electric separator for obtaining the present embodiment.
Comparison is tested for the property to above-mentioned composite diaphragm and polypropylene non-woven fabric basement membrane:
Coating layer thickness: coating is dual coating, and every side thickness is about 8 μm；
Heat-resisting quantity: diaphragm sample keeps 0.5h at 140 DEG C, and the percentage reduction of area of composite diaphragm is 3.5%, polypropylene
Non-woven fabrics basement membrane shrinking percentage is 14.2%；
Electrolyte compatibility: the LiPF of 1M is utilized6Conventional electrolysis liquid tests the contact angle and imbibition rate of diaphragm, composite diaphragm
Contact angle be 24.3 °, imbibition rate 255%, the contact angle of polypropylene non-woven fabric basement membrane is 38.7 °, imbibition rate 203%；
Battery performance test result: under 0.5C current condition, battery after 100 times are filled cycle charge-discharge, it is compound every
The capacity retention ratio that film assembles battery is 97.2%, and the conservation rate that polypropylene non-woven fabric basement membrane assembles battery is 96.4%；
Embodiment the result shows that, organic composite is carried out by tack high-temperaure coating and micropore basal membrane, and cooperate effective
Surface polarity control measures, the excellent heat resistance of lithium electric separator and the affine performance of electrolyte can be assigned, effectively improve lithium
The probability that accident occurs for lithium ion battery is effectively reduced in the thermal safety and charge-discharge performance of ion battery.Film-forming method letter
Singly, the control technology without expensive device and complexity, at the same it is low in cost, there is large-scale industrial production and be widely popularized and answer
Prospect.
Claims (10)
1. a kind of complex lithium electric separator material with tack coating, does basement membrane with micro-pore septum material, which is characterized in that base
Film surface is coated with high temperature resistant organic emulsion coating, and the mass percent concentration of the high temperature resistant organic emulsion is 12%-70%.
2. a kind of complex lithium electric separator material with tack coating as described in claim 1, which is characterized in that described multiple
Closing lithium electric separator material surface also uses naphthalene sodium solution to be modified processing, and the sodium naphthalene solution quality percent concentration is
6-30%, solvent are tetrahydrofuran.
3. a kind of complex lithium electric separator material with tack coating as claimed in claim 1 or 2, which is characterized in that institute
The high temperature resistant organic emulsion stated is dispersibility, the good nanometer organic micro-spheres dispersion liquid of film forming；Or the high temperature resistant is organic
Lotion is one or more of mixing of the third rubber latex of polytetrafluoroethylene (PTFE), polyacrylate or silicon.
4. a kind of complex lithium electric separator material with tack coating as claimed in claim 3, which is characterized in that described poly-
Tetrafluoroethene quality of the emulsion percent concentration is 20-35%；The polyacrylate dispersion mass percent concentration is 60%；Institute
Stating silicon the third rubber latex mass percent concentration is 25%.
5. a kind of preparation method of the complex lithium electric separator material with tack coating, it is characterised in that include the following steps:
(1) according to the hot closed pore temperature of the diaphragm of setting, choosing, there is the micro-pore septum material of corresponding fusing point to do basement membrane；
(2) high temperature resistant organic emulsion coating is coated in membrane surface.
6. the preparation method of the complex lithium electric separator material with tack coating as claimed in claim 5, it is characterised in that
Further include following steps:
(3) the cated basement membrane of coating of surface obtained by step (2) is put into naphthalene sodium solution and is modified processing, the naphthalene
Sodium solution mass percent concentration is 6-30%, and solvent is tetrahydrofuran.
7. such as the preparation method of the complex lithium electric separator material described in claim 5 or 6 with tack coating, feature exists
It is that the one or more of of the third rubber latex of polytetrafluoroethylene (PTFE), polyacrylate or silicon mix in the high temperature resistant organic emulsion
It closes.
8. a kind of preparation method of complex lithium electric separator material with tack coating according to claim 6, special
Sign is to further include one or more in following (a)-(f):
(a) further include the micro-pore septum chosen using washes of absolute alcohol in the step (1), be dried for standby after cleaning；
(b) the micro-pore septum material is the diaphragm material with abundant cellular structure, and cellular structure includes micron openings and nanometer
Hole, average pore size scope are 0.03 μm -50 μm, porosity ranges 25%-90%, and basement membrane thickness is 6 μm -40 μm；
It (c) further include that high temperature resistant organic emulsion is pre-processed into 20- in the ultrasonic wave that frequency is 40-70KHZ in the step (2)
Then 30min is coated in membrane surface；
(d) it is coated in the step (2) using dip-coating method, electrostatic spray, pneumatic spraying method；
(e) unilateral side of micropore basal membrane and bilateral are coated in the step (2), One-sided coatings thickness range is 0.5 μm of -8 μ
m；
(f) surface coats cated basement membrane after taking out in naphthalene sodium solution in the step (3), with washes of absolute alcohol 3-
8 times, the then 60-100 DEG C of drying in vacuum drying oven, roller process obtains high temperature resistant complex lithium electric separator.
9. a kind of preparation method of the complex lithium electric separator material with tack coating according to claim 5 or 8,
It is characterized in that the micro-pore septum material is polyethylene, polypropylene or Kynoar.
10. having the complex lithium electric separator material of tack coating described in a kind of claim 1-4 or to be wanted using right
The application for the complex lithium electric separator material with tack coating for asking preparation method described in 5-9 to prepare, it is characterised in that answer
For field of batteries.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111341975A (en) * | 2020-03-16 | 2020-06-26 | 四川优源新能源有限公司 | Diaphragm for high-efficiency lithium ion secondary battery and preparation method thereof |
| CN113594629A (en) * | 2021-07-13 | 2021-11-02 | 上海恩捷新材料科技有限公司 | High-temperature-resistant coating film, preparation method and electrochemical device thereof |
| CN114497899A (en) * | 2022-02-11 | 2022-05-13 | 北京宇程科技有限公司 | High-temperature-resistant polymer microsphere coated modified composite diaphragm and preparation method thereof |
| CN115312978A (en) * | 2022-08-16 | 2022-11-08 | 欣旺达电动汽车电池有限公司 | Composite diaphragm, preparation method thereof, secondary battery and electric equipment |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101319051A (en) * | 2008-07-15 | 2008-12-10 | 山东东岳神舟新材料有限公司 | Fibre reinforcement inorganics doped multi-layer fluorine ion exchange containing film |
| CN102163703A (en) * | 2010-02-20 | 2011-08-24 | 上海金由氟材料有限公司 | Polytetrafluoroethylene composite isolation membrane for lithium battery |
| CN202333016U (en) * | 2011-11-25 | 2012-07-11 | 佛山市金辉高科光电材料有限公司 | Porous multi-layer battery composite film with heat-resistant resin coating |
| CN203503726U (en) * | 2013-09-27 | 2014-03-26 | 中材科技股份有限公司 | Coated composite lithium battery diaphragm and preparation device thereof |
| CN103972450A (en) * | 2005-04-04 | 2014-08-06 | 索尼株式会社 | Battery |
| CN108155327A (en) * | 2017-12-11 | 2018-06-12 | 广州鹏辉能源科技股份有限公司 | Septum for lithium ion battery, preparation method and lithium ion battery |
| CN108183188A (en) * | 2017-11-29 | 2018-06-19 | 合肥国轩高科动力能源有限公司 | A kind of lithium ion battery composite separation membrane and preparation method thereof |
| CN108493388A (en) * | 2018-05-11 | 2018-09-04 | 合肥国轩高科动力能源有限公司 | A kind of vanadium cell cation-exchange membrane and preparation method thereof |
-
2018
- 2018-10-30 CN CN201811273284.6A patent/CN109524595A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103972450A (en) * | 2005-04-04 | 2014-08-06 | 索尼株式会社 | Battery |
| CN101319051A (en) * | 2008-07-15 | 2008-12-10 | 山东东岳神舟新材料有限公司 | Fibre reinforcement inorganics doped multi-layer fluorine ion exchange containing film |
| CN102163703A (en) * | 2010-02-20 | 2011-08-24 | 上海金由氟材料有限公司 | Polytetrafluoroethylene composite isolation membrane for lithium battery |
| CN202333016U (en) * | 2011-11-25 | 2012-07-11 | 佛山市金辉高科光电材料有限公司 | Porous multi-layer battery composite film with heat-resistant resin coating |
| CN203503726U (en) * | 2013-09-27 | 2014-03-26 | 中材科技股份有限公司 | Coated composite lithium battery diaphragm and preparation device thereof |
| CN108183188A (en) * | 2017-11-29 | 2018-06-19 | 合肥国轩高科动力能源有限公司 | A kind of lithium ion battery composite separation membrane and preparation method thereof |
| CN108155327A (en) * | 2017-12-11 | 2018-06-12 | 广州鹏辉能源科技股份有限公司 | Septum for lithium ion battery, preparation method and lithium ion battery |
| CN108493388A (en) * | 2018-05-11 | 2018-09-04 | 合肥国轩高科动力能源有限公司 | A kind of vanadium cell cation-exchange membrane and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111341975A (en) * | 2020-03-16 | 2020-06-26 | 四川优源新能源有限公司 | Diaphragm for high-efficiency lithium ion secondary battery and preparation method thereof |
| CN111341975B (en) * | 2020-03-16 | 2022-11-15 | 四川优源新能源有限公司 | Diaphragm for high-efficiency lithium ion secondary battery and preparation method thereof |
| CN113594629A (en) * | 2021-07-13 | 2021-11-02 | 上海恩捷新材料科技有限公司 | High-temperature-resistant coating film, preparation method and electrochemical device thereof |
| CN114497899A (en) * | 2022-02-11 | 2022-05-13 | 北京宇程科技有限公司 | High-temperature-resistant polymer microsphere coated modified composite diaphragm and preparation method thereof |
| CN115312978A (en) * | 2022-08-16 | 2022-11-08 | 欣旺达电动汽车电池有限公司 | Composite diaphragm, preparation method thereof, secondary battery and electric equipment |
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