CN102376928B - Lithium ion battery diaphragm and preparation method thereof - Google Patents
Lithium ion battery diaphragm and preparation method thereof Download PDFInfo
- Publication number
- CN102376928B CN102376928B CN201110047740A CN201110047740A CN102376928B CN 102376928 B CN102376928 B CN 102376928B CN 201110047740 A CN201110047740 A CN 201110047740A CN 201110047740 A CN201110047740 A CN 201110047740A CN 102376928 B CN102376928 B CN 102376928B
- Authority
- CN
- China
- Prior art keywords
- lithium ion
- ion battery
- battery separator
- preparation
- fire retardant
- 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
Classifications
-
- 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 discloses a lithium ion battery diaphragm, and also discloses a preparation method of the lithium ion battery diaphragm. The lithium ion battery diaphragm disclosed by the invention is prepared by using polyolefin resin, additive, antioxidant and fire retardant as raw materials and adopting a drawing-retracting-heat setting method. The lithium ion battery diaphragm comprises the following components in percent by weight: 0.001-20 percent of additive, 0.001-1 percent of antioxidant, 0.001-1 percent of fire retardant and the balance of the polyolefin resin. The lithium ion battery diaphragm has a diaphragm porosity of 35-80 percent, a pore diameter of 0.01-0.1mum, longitudinal and transverse drawing strengths of 80-250MPa, a shrinkage factor of less than 2 percent at the temperature of 90 DEG C and a thickness of 15-60mum, and has the advantages of uniform pore diameter distribution, longitudinal and transverse mechanical strengths, low high-temperature shrinkage factor, good heat thermal performance, and the like. The preparation method disclosed by the invention is simple and pollution-free, and is suitable for industrialized production.
Description
Technical field
The present invention relates to technical field of lithium ion, be specifically related to a kind of lithium ion battery separator and preparation method thereof.
Background technology
In lithium ion battery; Barrier film is a kind of film of porous, is the important part of lithium ion battery, is used for intercepting both positive and negative polarity and prevents internal short-circuit of battery; But allow ion to pass through, thereby accomplish the quick transmission of lithium ion between both positive and negative polarity in the charge discharge process.The performance of barrier film has determined the interfacial structure and the internal resistance of battery, directly influences the characteristic such as capacity, circulation of battery.From in the material of battery diaphragm, possess good mechanical strength, electrolyte resistance corrosive power, low resistance and suitable characteristics such as self-closing temperature as lithium.The barrier film of excellent performance has important effect to the combination property that improves battery.
Existing diaphragm material adopts polypropylene (PP) film and polyethylene (PE) film usually, but the preparation of present polypropylene and polyethylene film is relatively more difficult.The polypropylene commonly used and the preparation method of polyethylene film mainly contain two kinds of wet method and dry method.Adopt the dry production barrier film at present mostly, dry method is fusion drawn method (MSCS), is with the vistanex fusion; Push, be blow molded into the crystalline polymer film; After crystallization heat treatment, annealing, obtain height-oriented sandwich construction, at high temperature further stretch; Crystalizing interface is peeled off, formed loose structure.The advantage of dry method is pollution-free in the simple and production process of technology, and shortcoming is to control aperture and porosity well.Polypropylene (PP) film that goes out with dry process at present and polyethylene (PE) film exist that pore-size distribution is inhomogeneous, mechanical strength is low and shortcoming such as thermal stability is not good enough.
Summary of the invention
The object of the present invention is to provide a kind of even aperture distribution, the lithium ion battery separator that mechanical strength height and thermal stability are good.
Simultaneously, the present invention also aims to provide a kind of preparation method of lithium ion battery separator.
In order to realize above purpose; The technical scheme that the present invention adopted is: a kind of lithium ion battery separator; Processed by vistanex, additive, oxidation inhibitor and fire retardant, the weight percentage of additive described in this lithium ion battery separator is 0.001～20%, and the weight percentage of said oxidation inhibitor is 0.001～1%; The weight percentage of said fire retardant is 0.001～1%, and surplus is a vistanex.
The barrier film porosity of said lithium ion battery separator is 35%～80%, and the aperture is 0.01～0.1 μ m, and vertical, horizontal hot strength 80～250Mpa, 90 ℃ of following shrinkage＜2%, thickness are 15～60 μ m.
Further, said vistanex is polyethylene and/or polypropylene.
Said additive is pass dressing agent and porosity conditioning agent, its mesothyrid dressing agent weight: porosity conditioning agent weight=(0.1～1): 1.Said pass dressing agent is to be selected from least a in polyvinyl acetate, polyoxymethylenes, polystyrene, polyvinyl chloride, poly-1-butylene, polyvinylidene chloride and the polyvinylidene fluoride.Said porosity conditioning agent is to be selected from least a in amides compound, metal oxide compounds and the metal carboxylate compound; Wherein amides compound comprises acrylamide, caprolactam, N hydroxymethyl acrylamide and benzamide; The metal oxide compounds comprises magnesia, aluminium oxide and calcium oxide; The metal carboxylate compound comprises ethanedioic acid calcium, 1 one caproic acid magnesium, 1,3-succinic acid magnesium and 1-natrium valericum.
Said oxidation inhibitor is dibutyl hydroxy toluene and/or butylated hydroxy anisole.
Said fire retardant is to be selected from least a in APP, eight bromo ether, triphenyl phosphate, HBCD and the TDE.
A kind of preparation method of lithium ion battery separator may further comprise the steps:
(1) earlier vistanex is joined heating and melting in the extruder, in said extruder, add additive, oxidation inhibitor and fire retardant afterwards again, stir and melt extrude at 100～280 ℃;
(2) the curtain coating body and function chill roll cooling that step (1) is melt extruded obtains basement membrane, and chilling temperature is 40～150 ℃, and be 0.1～10 minute cooling time;
Biaxial tension when (3) said basement membrane being carried out vertical and horizontal, draft temperature are 40～120 ℃, and draw ratio is 1:8～1:9;
(4) basement membrane that stretched is at 20～100 ℃ of following retractions naturally, and the retraction time is 0.1～10 minute;
(5) after retraction was handled, again 100～150 ℃ of following thermal finalizations 0.1～10 minute, afterwards again through corona treatment, the voltage of corona treatment was 6000～10000V/m
2Processing time is 0.1～1 second, and rolling then obtains lithium ion battery separator; The weight percentage of additive is 0.001～20% in this lithium ion battery separator; The weight percentage of oxidation inhibitor is 0.001～1%, and the weight percentage of fire retardant is 0.001～1%, and surplus is a vistanex.
It is matrix that lithium ion battery separator provided by the invention adopts vistanex, makes through in this matrix, adding an amount of additive, oxidation inhibitor and fire retardant.Said additive is pass dressing agent and porosity conditioning agent, adds the pass that can make the lithium ion battery separator that makes behind this additive for type round, and helping electrolyte more passes through; After adding oxidation inhibitor, the chemical stability of the lithium ion battery separator that makes in organic electrolyte increases, and to strong oxidation material torpescence, the mechanical strength of barrier film can not decay and not produce impurity simultaneously; After adding fire retardant, barrier film can melt-combustion under hot conditions, makes to adopt the security performance of the lithium ion battery that battery diaphragm of the present invention makes to significantly improve.
Lithium ion battery separator of the present invention adopts stretching-retraction-heat setting method to make; (draw ratio is 1:8～1:9) in the preparation process, to have adopted big draw ratio; Carry out the nature retraction after the stretching, carry out thermal finalization afterwards again and handle, compare with existing stretching back direct heat typing treatment process; It is more regular that preparation method provided by the invention can make strand arrange; The mechanical strength of vertical, horizontal is uniformity more, possesses performances such as higher anti-ly pierce through, strain insulator is tight, and the high-temperature shrinkage rate of the lithium ion battery separator that the most important thing is to make significantly reduces (90 ℃ of following shrinkage＜2%); Make the thermal stability of barrier film better, therefore improved the security performance of the lithium ion battery that uses this barrier film greatly.An important function of barrier film is used for intercepting both positive and negative polarity exactly; Prevent internal short-circuit of battery, but lithium ion battery especially high power capacity, powerful lithium ion battery can produce a large amount of heat in the course of the work, very easily cause the contraction distortion of lithium ion battery separator; Even possibly cause internal short-circuit of battery; Have a strong impact on the security performance of lithium ion battery, and adopted the high-temperature shrinkage rate of the lithium ion battery separator that preparation method of the present invention obtains significantly to reduce, when being heated, be difficult for contraction distortion; Thermal stability is better, has therefore improved the security performance of the lithium ion battery that uses this barrier film greatly.
After thermal finalization is handled, again battery diaphragm is carried out corona treatment, can further reduce the tension force of membrane surface on the one hand, thereby further prevent the contraction distortion of barrier film; Can increase the affinity of barrier film and electrode on the other hand, reduce the resistance of battery, reduce polarization of electrode, also help the modification processing of later stage barrier film.
The barrier film porosity of the lithium ion battery separator that the present invention makes is 35%～80%, and the aperture is 0.01～0.1 μ m, vertical, horizontal hot strength 80～250Mpa; 90 ℃ of following shrinkage＜2%, thickness are 15～60 μ m, have even aperture distribution; Advantages such as the vertical, horizontal mechanical strength is high, and the high-temperature shrinkage rate is low, thermal stability is good, and the preparation method of lithium ion battery separator provided by the invention is simple; Pollution-free, suitability for industrialized production.
Embodiment
Embodiment 1
The composition of raw materials of the lithium ion battery separator of present embodiment is seen shown in the table 1.
The preparation method of present embodiment lithium ion battery separator may further comprise the steps:
(1) takes by weighing each raw material by the composition of raw materials shown in the table 1, earlier vistanex is joined heating and melting in the extruder, in extruder, add additive, oxidation inhibitor and fire retardant afterwards again, stir and melt extrude at 100 ℃;
(2) the curtain coating body and function chill roll cooling that step (1) is melt extruded obtains basement membrane, and chilling temperature is 40 ℃, and be 0.1 minute cooling time;
Biaxial tension when (3) said basement membrane being carried out vertical and horizontal, draft temperature are 40 ℃, and draw ratio is 1:8;
(4) basement membrane that stretched is at 20 ℃ of following retractions naturally, and the retraction time is 0.1 minute;
(5) after retraction was handled, again 100 ℃ of following thermal finalizations 0.1 minute, afterwards again through corona treatment, the voltage of corona treatment was 6000V/m
2, the processing time is 1 second, rolling then obtains lithium ion battery separator.
Embodiment 2
The composition of raw materials of the lithium ion battery separator of present embodiment is seen shown in the table 1.
The preparation method of present embodiment lithium ion battery separator may further comprise the steps:
(1) takes by weighing each raw material by the composition of raw materials shown in the table 1, earlier vistanex is joined heating and melting in the extruder, in extruder, add additive, oxidation inhibitor and fire retardant afterwards again, stir and melt extrude at 100 ℃;
(2) the curtain coating body and function chill roll cooling that step (1) is melt extruded obtains basement membrane, and chilling temperature is 40 ℃, and be 0.1 minute cooling time;
Biaxial tension when (3) said basement membrane being carried out vertical and horizontal, draft temperature are 40 ℃, and draw ratio is 1:8;
(4) basement membrane that stretched is at 20 ℃ of following retractions naturally, and the retraction time is 0.1 minute;
(5) after retraction was handled, again 100 ℃ of following thermal finalizations 0.1 minute, afterwards again through corona treatment, the voltage of corona treatment was 10000V/m
2, the processing time is 0.1 second, rolling then obtains lithium ion battery separator.
Embodiment 3
The composition of raw materials of the lithium ion battery separator of present embodiment is seen shown in the table 1.
The preparation method of present embodiment lithium ion battery separator may further comprise the steps:
(1) takes by weighing each raw material by the composition of raw materials shown in the table 1, earlier vistanex is joined heating and melting in the extruder, in extruder, add additive, oxidation inhibitor and fire retardant afterwards again, stir and melt extrude at 280 ℃;
(2) the curtain coating body and function chill roll cooling that step (1) is melt extruded obtains basement membrane, and chilling temperature is 150 ℃, and be 10 minutes cooling time;
Biaxial tension when (3) said basement membrane being carried out vertical and horizontal, draft temperature are 120 ℃, and draw ratio is 1:9;
(4) basement membrane that stretched is at 40 ℃ of following retractions naturally, and the retraction time is 2 minutes;
(5) after retraction was handled, again 150 ℃ of following thermal finalizations 1 minute, afterwards again through corona treatment, the voltage of corona treatment was 9000V/m
2, the processing time is 0.5 second, rolling then obtains lithium ion battery separator.
Embodiment 4
The composition of raw materials of the lithium ion battery separator of present embodiment is seen shown in the table 1.
The preparation method of present embodiment lithium ion battery separator may further comprise the steps:
(1) takes by weighing each raw material by the composition of raw materials shown in the table 1, earlier vistanex is joined heating and melting in the extruder, in extruder, add additive, oxidation inhibitor and fire retardant afterwards again, stir and melt extrude at 280 ℃;
(2) the curtain coating body and function chill roll cooling that step (1) is melt extruded obtains basement membrane, and chilling temperature is 150 ℃, and be 10 minutes cooling time;
Biaxial tension when (3) said basement membrane being carried out vertical and horizontal, draft temperature are 120 ℃, and draw ratio is 1:9;
(4) basement membrane that stretched is at 40 ℃ of following retractions naturally, and the retraction time is 2 minutes;
(5) after retraction was handled, again 150 ℃ of following thermal finalizations 1 minute, afterwards again through corona treatment, the voltage of corona treatment was 6000V/m
2, the processing time is 1 second, rolling then obtains lithium ion battery separator.
Embodiment 5
The composition of raw materials of the lithium ion battery separator of present embodiment is seen shown in the table 1.
The preparation method of present embodiment lithium ion battery separator may further comprise the steps:
(1) takes by weighing each raw material by the composition of raw materials shown in the table 1, earlier vistanex is joined heating and melting in the extruder, in extruder, add additive, oxidation inhibitor and fire retardant afterwards again, stir and melt extrude at 150 ℃;
(2) the curtain coating body and function chill roll cooling that step (1) is melt extruded obtains basement membrane, and chilling temperature is 60 ℃, and be 5 minutes cooling time;
Biaxial tension when (3) said basement membrane being carried out vertical and horizontal, draft temperature are 60 ℃, and draw ratio is 1:8;
(4) basement membrane that stretched is at 60 ℃ of following retractions naturally, and the retraction time is 5 minutes;
(5) after retraction was handled, again 120 ℃ of following thermal finalizations 5 minutes, afterwards again through corona treatment, the voltage of corona treatment was 10000V/m
2, the processing time is 1 second, rolling then obtains lithium ion battery separator.
Embodiment 6
The composition of raw materials of the lithium ion battery separator of present embodiment is seen shown in the table 1.
The preparation method of present embodiment lithium ion battery separator may further comprise the steps:
(1) takes by weighing each raw material by the composition of raw materials shown in the table 1, earlier vistanex is joined heating and melting in the extruder, in extruder, add additive, oxidation inhibitor and fire retardant afterwards again, stir and melt extrude at 150 ℃;
(2) the curtain coating body and function chill roll cooling that step (1) is melt extruded obtains basement membrane, and chilling temperature is 60 ℃, and be 5 minutes cooling time;
Biaxial tension when (3) said basement membrane being carried out vertical and horizontal, draft temperature are 120 ℃, and draw ratio is 1:9;
(4) basement membrane that stretched is at 40 ℃ of following retractions naturally, and the retraction time is 2 minutes;
(5) after retraction was handled, again 120 ℃ of following thermal finalizations 1 minute, afterwards again through corona treatment, the voltage of corona treatment was 6000V/m
2, the processing time is 0.2 second, rolling then obtains lithium ion battery separator.
Embodiment 7
The composition of raw materials of the lithium ion battery separator of present embodiment is seen shown in the table 1.
The preparation method of present embodiment lithium ion battery separator may further comprise the steps:
(1) takes by weighing each raw material by the composition of raw materials shown in the table 1, earlier vistanex is joined heating and melting in the extruder, in extruder, add additive, oxidation inhibitor and fire retardant afterwards again, stir and melt extrude at 200 ℃;
(2) the curtain coating body and function chill roll cooling that step (1) is melt extruded obtains basement membrane, and chilling temperature is 100 ℃, and be 1 minute cooling time;
Biaxial tension when (3) said basement membrane being carried out vertical and horizontal, draft temperature are 100 ℃, and draw ratio is 1:8;
(4) basement membrane that stretched is at 100 ℃ of following retractions naturally, and the retraction time is 10 minutes;
(5) after retraction was handled, again 150 ℃ of following thermal finalizations 10 minutes, afterwards again through corona treatment, the voltage of corona treatment was 6000V/m
2, the processing time is 0.1 second, rolling then obtains lithium ion battery separator.
Embodiment 8
The composition of raw materials of the lithium ion battery separator of present embodiment is seen shown in the table 1.
The preparation method of present embodiment lithium ion battery separator may further comprise the steps:
(1) takes by weighing each raw material by the composition of raw materials shown in the table 1, earlier vistanex is joined heating and melting in the extruder, in extruder, add additive, oxidation inhibitor and fire retardant afterwards again, stir and melt extrude at 200 ℃;
(2) the curtain coating body and function chill roll cooling that step (1) is melt extruded obtains basement membrane, and chilling temperature is 100 ℃, and be 1 minute cooling time;
Biaxial tension when (3) said basement membrane being carried out vertical and horizontal, draft temperature are 100 ℃, and draw ratio is 1:8;
(4) basement membrane that stretched is at 100 ℃ of following retractions naturally, and the retraction time is 10 minutes;
(5) after retraction was handled, again 150 ℃ of following thermal finalizations 10 minutes, afterwards again through corona treatment, the voltage of corona treatment was 10000V/m
2, the processing time is 0.1 second, rolling then obtains lithium ion battery separator.
Embodiment 9
The composition of raw materials of the lithium ion battery separator of present embodiment is seen shown in the table 1.
The preparation method of present embodiment lithium ion battery separator may further comprise the steps:
(1) takes by weighing each raw material by the composition of raw materials shown in the table 1, earlier vistanex is joined heating and melting in the extruder, in extruder, add additive, oxidation inhibitor and fire retardant afterwards again, stir and melt extrude at 100 ℃;
(2) the curtain coating body and function chill roll cooling that step (1) is melt extruded obtains basement membrane, and chilling temperature is 150 ℃, and be 0.1 minute cooling time;
Biaxial tension when (3) said basement membrane being carried out vertical and horizontal, draft temperature are 40 ℃, and draw ratio is 1:8;
(4) basement membrane that stretched is at 100 ℃ of following retractions naturally, and the retraction time is 1 minute;
(5) after retraction was handled, again 110 ℃ of following thermal finalizations 3 minutes, afterwards again through corona treatment, the voltage of corona treatment was 6000V/m
2, the processing time is 1 second, rolling then obtains lithium ion battery separator.
Embodiment 10
The composition of raw materials of the lithium ion battery separator of present embodiment is seen shown in the table 1.
The preparation method of present embodiment lithium ion battery separator may further comprise the steps:
(1) takes by weighing each raw material by the composition of raw materials shown in the table 1, earlier vistanex is joined heating and melting in the extruder, in extruder, add additive, oxidation inhibitor and fire retardant afterwards again, stir and melt extrude at 200 ℃;
(2) the curtain coating body and function chill roll cooling that step (1) is melt extruded obtains basement membrane, and chilling temperature is 50 ℃, and be 8 minutes cooling time;
Biaxial tension when (3) said basement membrane being carried out vertical and horizontal, draft temperature are 60 ℃, and draw ratio is 1:8;
(4) basement membrane that stretched is at 50 ℃ of following retractions naturally, and the retraction time is 6 minutes;
(5) after retraction was handled, again 110 ℃ of following thermal finalizations 10 minutes, afterwards again through corona treatment, the voltage of corona treatment was 10000V/m
2, the processing time is 0.1 second, rolling then obtains lithium ion battery separator.
Table? 1 Various embodiments of the lithium-ion battery separator material ratio
The detection data of the lithium ion battery separator that embodiment 1～10 makes are seen shown in the table 2.From table 2, can find out, the even aperture distribution of the lithium ion battery separator that the present invention makes, the vertical, horizontal mechanical strength is high, and the high-temperature shrinkage rate is low, thermal stability is good.
The detection data of the lithium ion battery separator that each embodiment of table 2 makes
Claims (8)
1. the preparation method of a lithium ion battery separator; It is characterized in that: lithium ion battery separator is processed by vistanex, additive, oxidation inhibitor and fire retardant; The weight percentage of additive described in this lithium ion battery separator is 0.001～20%; The weight percentage of said oxidation inhibitor is 0.001～1%, and the weight percentage of said fire retardant is 0.001～1%, and surplus is a vistanex; May further comprise the steps:
(1) earlier vistanex is joined heating and melting in the extruder, in said extruder, add additive, oxidation inhibitor and fire retardant afterwards again, stir and melt extrude at 100～280 ℃; Said additive is pass dressing agent and porosity conditioning agent, its mesothyrid dressing agent weight: porosity conditioning agent weight=(0.1～1): 1;
(2) the curtain coating body and function chill roll cooling that step (1) is melt extruded obtains basement membrane, and chilling temperature is 40～150 ℃, and be 0.1～10 minute cooling time;
Biaxial tension when (3) said basement membrane being carried out vertical and horizontal, draft temperature are 40～120 ℃, and draw ratio is 1:8～1:9;
(4) basement membrane that stretched is at 20～100 ℃ of following retractions naturally, and the retraction time is 0.1～10 minute;
(5) after retraction was handled, again 100～150 ℃ of following thermal finalizations 0.1～10 minute, afterwards again through corona treatment, the voltage of corona treatment was 6000～10000V/m
2, the processing time is 0.1～1 second, rolling then obtains lithium ion battery separator.
2. the preparation method of lithium ion battery separator according to claim 1; It is characterized in that: the barrier film porosity of said lithium ion battery separator is 35%～80%; The aperture is 0.01～0.1 μ m; Vertical, horizontal hot strength 80～250Mpa, 90 ℃ of following shrinkage＜2%, thickness are 15～60 μ m.
3. the preparation method of lithium ion battery separator according to claim 1, it is characterized in that: said vistanex is polyethylene and/or polypropylene.
4. the preparation method of lithium ion battery separator according to claim 1 is characterized in that: said pass dressing agent is to be selected from least a in polyvinyl acetate, polyoxymethylenes, polystyrene, polyvinyl chloride, poly-1-butylene, polyvinylidene chloride and the polyvinylidene fluoride.
5. the preparation method of lithium ion battery separator according to claim 1 is characterized in that: said porosity conditioning agent is to be selected from least a in amides compound, metal oxide compounds and the metal carboxylate compound; Wherein amides compound comprises acrylamide, caprolactam, N hydroxymethyl acrylamide and benzamide; The metal oxide compounds comprises magnesia, aluminium oxide and calcium oxide; The metal carboxylate compound comprises ethanedioic acid calcium, 1 one caproic acid magnesium, 1,3-succinic acid magnesium and 1-natrium valericum.
6. the preparation method of lithium ion battery separator according to claim 1, it is characterized in that: said oxidation inhibitor is dibutyl hydroxy toluene and/or butylated hydroxy anisole.
7. the preparation method of lithium ion battery separator according to claim 1 is characterized in that: said fire retardant is to be selected from least a in APP, eight bromo ether, triphenyl phosphate, HBCD and the TDE.
8. the lithium ion battery separator that makes of an employing such as each described preparation method of claim 1～7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110047740A CN102376928B (en) | 2011-02-28 | 2011-02-28 | Lithium ion battery diaphragm and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110047740A CN102376928B (en) | 2011-02-28 | 2011-02-28 | Lithium ion battery diaphragm and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102376928A CN102376928A (en) | 2012-03-14 |
| CN102376928B true CN102376928B (en) | 2012-09-05 |
Family
ID=45795178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110047740A Active CN102376928B (en) | 2011-02-28 | 2011-02-28 | Lithium ion battery diaphragm and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102376928B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738427B (en) * | 2012-07-19 | 2015-01-28 | 河南义腾新能源科技有限公司 | Inorganic composite microporous membrane serving as lithium ion battery diaphragm and preparation method thereof |
| CN103242591B (en) * | 2013-05-29 | 2015-09-30 | 上海安凸塑料添加剂有限公司 | Polypropylene flame redardant microporous membrane and preparation method thereof |
| CN103881212B (en) * | 2014-03-25 | 2016-06-08 | 上海海洋大学 | Food fresh keeping membrane and its preparation method |
| CN104868083B (en) * | 2015-04-18 | 2017-08-25 | 湖南润沅新材料有限公司 | A kind of barrier film of lithium battery and preparation method thereof |
| CN105958111A (en) * | 2016-06-14 | 2016-09-21 | 东莞市创明电池技术有限公司 | Electrolyte for lithium ion battery, and lithium ion battery |
| JP7233157B2 (en) * | 2016-08-31 | 2023-03-06 | 住友化学株式会社 | Separator for non-aqueous electrolyte secondary battery |
| CN106252563A (en) * | 2016-08-31 | 2016-12-21 | 河南义腾新能源科技有限公司 | A kind of lithium ion battery separator and preparation method thereof |
| CN106626457B (en) * | 2016-12-01 | 2021-04-23 | 深圳市星源材质科技股份有限公司 | Preparation method of polyolefin microporous membrane |
| CN109326761A (en) * | 2018-08-10 | 2019-02-12 | 泰州衡川新能源材料科技有限公司 | For manufacturing the composition of lithium battery diaphragm |
| CN111987279A (en) * | 2020-08-28 | 2020-11-24 | 重庆金美新材料科技有限公司 | Lithium supplement diaphragm and preparation method thereof |
| CN111987275B (en) * | 2020-09-01 | 2022-04-19 | 厦门大学 | Preparation method and preparation device of lithium ion battery diaphragm |
| CN113054319B (en) * | 2020-09-14 | 2023-02-17 | 上海恩捷新材料科技有限公司 | Preparation method and system of adhesive functional diaphragm and lithium ion battery |
| CN114284636A (en) * | 2021-12-24 | 2022-04-05 | 华南师范大学 | Flame-retardant composite battery diaphragm, and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1294610A (en) * | 1998-03-24 | 2001-05-09 | 旭化成工业株式会社 | MIcroporous polyolefin film |
| CN1819306A (en) * | 2006-03-15 | 2006-08-16 | 金龙精密铜管集团股份有限公司 | Lithium ion battery diaphragm and production thereof |
| CN101436651A (en) * | 2007-11-16 | 2009-05-20 | Sk能源 | Microporous polyethylene film with improved strength, permeability and surface energy |
-
2011
- 2011-02-28 CN CN201110047740A patent/CN102376928B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1294610A (en) * | 1998-03-24 | 2001-05-09 | 旭化成工业株式会社 | MIcroporous polyolefin film |
| CN1819306A (en) * | 2006-03-15 | 2006-08-16 | 金龙精密铜管集团股份有限公司 | Lithium ion battery diaphragm and production thereof |
| CN101436651A (en) * | 2007-11-16 | 2009-05-20 | Sk能源 | Microporous polyethylene film with improved strength, permeability and surface energy |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102376928A (en) | 2012-03-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102376928B (en) | Lithium ion battery diaphragm and preparation method thereof | |
| CN102148346B (en) | Polyolefin microporous diaphragm and preparation method thereof | |
| CN105576172B (en) | cross-linked polyolefin diaphragm and preparation method thereof | |
| JP6085278B2 (en) | Composite porous separator and electrochemical device | |
| Wu et al. | Progresses in manufacturing techniques of lithium‐ion battery separators in China | |
| CN103339176B (en) | Porous polypropylene film, electrical storage device dividing plate and electrical storage device | |
| JP5256773B2 (en) | Porous polypropylene film | |
| CN100403581C (en) | Lithium cell, safety diaphragm of lithium ion cell and mfg. method | |
| CN102575038B (en) | porous polypropylene film roll | |
| CN102527260B (en) | Multi-layer polyethylene microporous membrane and preparation method thereof | |
| CN102248713B (en) | Polyene microporous multilayer diaphragm and manufacturing method thereof | |
| CN102320133A (en) | A kind of polyolefin battery separation film and preparation method thereof | |
| CN102282203B (en) | Porous polypropylene film and production method thereof | |
| JP5194476B2 (en) | Porous polypropylene film | |
| CN100388533C (en) | Lithium ion battery diaphragm and production thereof | |
| CN102001186A (en) | Method for forming polyolefin microporous membrane and application thereof | |
| JP6222087B2 (en) | Polyolefin resin porous film | |
| CN104140502A (en) | Binder for lithium ion battery diaphragm, preparation method and diaphragm using the same | |
| CN103730619B (en) | A kind of preparation method of diaphragm for lithium ion battery of high strength | |
| JP2016507877A (en) | Separation membrane manufacturing method, separation membrane and battery using the same | |
| CN104327351A (en) | Microporous polyethylene film | |
| JP2016501917A (en) | Microporous separator film with homogeneous porosity and increased penetration resistance | |
| CN109742296A (en) | A kind of three-layer co-extruded lithium battery diaphragm and preparation method thereof | |
| CN105633328A (en) | Polypropylene porous membrane for lithium-ion battery and preparation method of polypropylene porous membrane | |
| CN116376280A (en) | Poly (p-phenylene benzobisoxazole) porous membrane, preparation method and application thereof, composite membrane and battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20180720 Granted publication date: 20120905 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20210720 Granted publication date: 20120905 |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230217 Address after: 472300 Room 102, Floor 1, Electronic Industrial Park, Tianshan Road, Taishan Road Street, Yima City, Sanmenxia City, Henan Province Patentee after: Henan Tiangong Membrane New Energy Technology Co.,Ltd. Address before: 472300 west section of Qianqiu Road, Yima City, Sanmenxia City, Henan Province Patentee before: HENAN YITENG NEW ENERGY TECHNOLOGY Co.,Ltd. |