CN103441228B - Aromatic polysulfonamide base lithium ion battery diaphragm prepared by a kind of wet method copy paper technique - Google Patents
Aromatic polysulfonamide base lithium ion battery diaphragm prepared by a kind of wet method copy paper technique Download PDFInfo
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- CN103441228B CN103441228B CN201310246401.0A CN201310246401A CN103441228B CN 103441228 B CN103441228 B CN 103441228B CN 201310246401 A CN201310246401 A CN 201310246401A CN 103441228 B CN103441228 B CN 103441228B
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- ion battery
- lithium ion
- aromatic polysulfonamide
- battery separator
- non woven
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- 125000003118 aryl group Chemical group 0.000 title claims abstract description 44
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000002131 composite material Substances 0.000 claims abstract description 20
- 230000004888 barrier function Effects 0.000 claims abstract description 16
- 238000002360 preparation method Methods 0.000 claims abstract description 8
- 239000003792 electrolyte Substances 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 230000035699 permeability Effects 0.000 claims abstract description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 9
- 238000010009 beating Methods 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 6
- -1 poly(ethylene oxide) Polymers 0.000 claims description 6
- 241000218691 Cupressaceae Species 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 239000006185 dispersion Substances 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 4
- 239000000654 additive Substances 0.000 claims description 4
- 230000000996 additive effect Effects 0.000 claims description 4
- 239000001913 cellulose Substances 0.000 claims description 4
- 229920002678 cellulose Polymers 0.000 claims description 4
- 239000000661 sodium alginate Substances 0.000 claims description 4
- 235000010413 sodium alginate Nutrition 0.000 claims description 4
- 229940005550 sodium alginate Drugs 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 239000004677 Nylon Substances 0.000 claims description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 2
- 239000004642 Polyimide Substances 0.000 claims description 2
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 2
- 229920006231 aramid fiber Polymers 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 2
- 230000008602 contraction Effects 0.000 claims description 2
- 229920001778 nylon Polymers 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 229920001721 polyimide Polymers 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims description 2
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 2
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 7
- 229920000098 polyolefin Polymers 0.000 abstract description 4
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 2
- 238000009736 wetting Methods 0.000 abstract 1
- 239000002002 slurry Substances 0.000 description 7
- 230000018044 dehydration Effects 0.000 description 6
- 238000006297 dehydration reaction Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000009826 distribution Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000011440 grout Substances 0.000 description 3
- 238000000643 oven drying Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 244000068988 Glycine max Species 0.000 description 1
- 235000010469 Glycine max Nutrition 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 229920005601 base polymer Polymers 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 1
- 229960001755 resorcinol Drugs 0.000 description 1
- 210000002966 serum Anatomy 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 description 1
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 present invention relates to a kind of aromatic polysulfonamide base lithium ion battery diaphragm and preparation method thereof.Wherein, this lithium ion battery separator is with aromatic polysulfonamide composite non woven film for base material, adopts wet method copy paper technique to prepare.Its feature is thickness is 10 μm-200 μm, and porosity is 40%-95%, and aperture is 0.05 μm-1 μm, and air permeability Gurley value is 1s-500s/100cc.Compared with conventional polyolefins barrier film, aromatic polysulfonamide base battery barrier film of the present invention has good electrolyte wetting property, excellent fire resistance and resistance to elevated temperatures, improve high temperature safe performance and the multiplying power long circulating performance of lithium ion battery, widened the application of this barrier film further.Therefore this barrier film can be applicable to the field such as power lithium-ion battery and high temperature resistant battery.Meanwhile, technical scheme provided by the invention is simple, low production cost, is suitable for carrying out large-scale production.
Description
Technical field
The present invention relates to lithium ion battery, particularly relate to a kind of aromatic polysulfonamide base lithium ion battery diaphragm and preparation method thereof.
Background technology
Lithium ion battery have high power density, memory-less effect, self-discharge rate low, can the stable and advantage such as to have extended cycle life of fast charging and discharging, discharge voltage, thus become the focus of novel power supply technical research, obtained in fields such as portable electric appts at present and developed fast.Lithium ion battery forms primarily of three parts: positive electrode, negative material and barrier film.Battery diaphragm is indispensable a kind of crucial assembling in battery production, and its cost accounts for the 20%-30% of battery total cost.The Main Function of barrier film utilizes the non-conductive property of barrier film to be separated by the both positive and negative polarity of battery, prevents two electrode contacts and be short-circuited, and relies on the microcellular structure of barrier film self simultaneously, allow lithium ion freely pass through, and keeps ionic conductivity good between both positive and negative polarity.The quality of membrane properties affects greatly battery performance and security performance.Therefore, the lithium ion battery separator developing excellent combination property just seems and is even more important.
At present, the diaphragm material of lithium ion battery mainly contains polyethylene (PE), polypropylene (PP) single layer microporous film, and their MULTILAYER COMPOSITE microporous barrier, as the product film of trade mark Celgard.This kind of material simple tension is made, and its shortcoming is: on the one hand, and its pass is long and narrow, transverse direction, longitudinal direction are 1:10, and transverse strength is low, complicated process of preparation, thus limits widely using of this barrier film.On the other hand, its melt temperature is lower, makes lithium ion battery when temperature is slightly high, the polyalkene diaphragm heat shrinkable of inside battery and then initiation battery short circuit, internal heat increases instantaneously, thus causes battery explosion and burning, directly endangers the life security of people.
Aromatic polysulfonamide is the high-tech product of China's autonomous innovation exploitation, has filled up the blank of China at 250 DEG C of field high temperature polymeric materialses.Aromatic polysulfonamide be a kind of on high polymer main chain containing the aromatic polyamide fibre of sulfuryl, be to be polymerized with diamino resorcin by paraphthaloyl chloride to obtain a base polymer.Due to sulfuryl-SO
2-introducing, further increase again its heat decomposition temperature and strand toughness increased, the flexibility of aromatic polysulfonamide is better than Fanglun slurry cake, for composite enhancement, shock resistance, endurance, not easy damaged in the course of processing, shows and seals resilience preferably in encapsulant goods.The ru nnability of aromatic polysulfonamide pulp is excellent, has the features such as good insulation preformance, tearing strength is high, any surface finish, resistance to elevated temperatures are good, is that wet method is manufactured paper with pulp the important paper substrate raw material of insulating paper or other synthetic papers.Meanwhile, aromatic polysulfonamide has excellent chemical resistance, and electrochemical stability, electrical insulating property, the advantage such as fire resistance and resistance to elevated temperatures, it is mainly used in high-temperature-resistant filtering material, special protecting clothing, the aspect such as electrical insulating material and thermostability engineering plastic.But, so far, not about the bibliographical information of aromatic polysulfonamide base composite non woven film as lithium ion battery separator.The nonwoven film utilizing wet method papermaking technology to prepare is an important development direction of lithium ion battery separator, and it is large that it has specific area, and electrolyte uniform absorption, porosity advantages of higher, thus obtains the extensive concern of various countries lithium ion battery separator researcher.Based on this, the present invention utilizes wet method copy paper technique successfully to prepare the aromatic polysulfonamide base composite non woven film of flame-resistant high-temperature-resistant, and is applied to lithium ion battery separator field.
Summary of the invention
The object of the invention is to the deficiency improving conventional polyolefins barrier film, provide a kind of fire-retardant, resistant to elevated temperatures aromatic polysulfonamide base lithium ion battery diaphragm, improve the combination property of existing battery diaphragm.
Another object of the present invention is to the preparation method that above-mentioned aromatic polysulfonamide base lithium ion battery diaphragm is provided.
For achieving the above object, lithium ion battery separator provided by the present invention is aromatic polysulfonamide base composite non woven film composition, and film thickness is 10 μm-200 μm; Porosity is 40%-95%, and aperture is 0.05 μm-1 μm, and electrolyte absorptivity is 100%-800%, and air permeability Gurley value is 1s-500s/100cc; Fire resistance is good, and limited oxygen index is 30%-35%; Thermal stability is excellent, 200
oat C temperature, dimensional contraction rate is less than 0.5%.
Affiliated preparation method is by wet method copy paper technique to aromatic polysulfonamide slurry or mixed slurry, prepares affiliated aromatic polysulfonamide base composite non woven film through making beating, copy paper, roll-in, drying.For achieving the above object, the technical solution adopted in the present invention is as follows:
Step 1, aromatic polysulfonamide starched cypress and additive is added in dispersion liquid by a certain percentage, after fiberizer making beating process, obtain paper making pulp;
Step 2, paper making pulp step 1 obtained carry out manufacturing paper with pulp shaping on paper machine, obtain hygrometric state aromatic polysulfonamide base composite non woven film;
Step 3, hygrometric state aromatic polysulfonamide base nonwoven film is carried out roll compacting, drying, to remove unnecessary moisture, then through winding, just obtain aromatic polysulfonamide base lithium ion battery diaphragm.
In wherein said preparation method, dispersion liquid used is one or more in deionized water, ethanol, isopropyl alcohol and glycerol; Additive is including, but not limited to cellulose, bamboo fibre, fibre and soya, aramid fiber, polyimides, nylon, polyester fiber, polyacrylonitrile, sodium alginate, one or more in sodium carboxymethylcellulose, poly(ethylene oxide), soluble polyurethane, beating degree is 50-90
osR, roll compacting pressure is 4-40MPa, and bake out temperature is 50-100
oc.
The purposes of aromatic polysulfonamide base lithium ion battery diaphragm is, the aromatic polysulfonamide composite non woven film utilizing high temperature resistant and close electrolyte is base material, improve resistance to elevated temperatures and the electrolyte uptake of battery diaphragm, this nonwoven film has higher porosity and fire resistance simultaneously, drastically increase heat temperature resistant safe performance and the multiplying power long circulating performance of lithium ion battery, widen the application of this barrier film further.Therefore this barrier film can be applicable to power lithium-ion battery and high temperature resistant field of batteries.Meanwhile, technical scheme low production cost of the present invention, and also preparation is simple, is suitable for large-scale production.
Accompanying drawing explanation
Fig. 1 is the scanning electron microscopic picture of aromatic polysulfonamide nonwoven film in embodiment 1;
Fig. 2 is Celgard2500 barrier film (a) and the dimensional stability digital photograph of aromatic polysulfonamide base composite non woven film (b) at 200 DEG C of temperature;
Fig. 3 is the fire resistance of Celgard2500 barrier film (a) and aromatic polysulfonamide base composite non woven film (b);
Fig. 4 is the long circulating performance characterization of full battery when 0.5C/0.5C with the assembling of aromatic polysulfonamide base composite non woven film.
Embodiment
Be more than to of the present invention generality describe, below we will be further explained claim of the present invention by instantiation.
Embodiment 1
1g aromatic polysulfonamide slurry cypress and 200g deionized water are pulled an oar through fiberizer, controlling beating degree is 50
osR, makes homogeneous slurry, by the grout distribution that obtains on wire-cloth, carries out dehydration film forming, by the ply of paper after dehydration by roll-in, then through 100
oc oven drying, to remove moisture unnecessary in ply of paper, finally carrying out reels just obtains aromatic polysulfonamide nonwoven film.
Embodiment 2
0.5g aromatic polysulfonamide slurry cypress, 0.5g cellulose pulp, 300g deionized water and 100g ethanol are pulled an oar through fiberizer, controlling beating degree is 80
osR, makes uniform mixed serum, by the grout distribution that obtains on wire-cloth, carries out dehydration film forming, by the ply of paper after dehydration by roll-in, then through 90
oc oven drying, to remove moisture unnecessary in ply of paper, finally reels, and just obtains aromatic polysulfonamide/cellulose composite non woven film.
Embodiment 3
1.5g aromatic polysulfonamide slurry cypress, 1g sodium alginate, 400g deionized water and 100g glycerol are pulled an oar through fiberizer, controlling beating degree is 70
osR, makes homogeneous slurry, by the grout distribution that obtains on wire-cloth, carries out dehydration film forming, by the ply of paper after dehydration by roll-in, then through 80
oc oven drying, to remove moisture unnecessary in ply of paper, finally reels, and just obtains aromatic polysulfonamide/sodium alginate composite non woven film.
The present invention is not only confined to above execution mode, can according to material proportion, dispersion liquid proportioning, and beating degree is different, roll compacting pressure and bake out temperature are prepared and met product type required for lithium ion battery separator and specification.The scientific research personnel of this area can also make various change and distortion, under the prerequisite of this patent purport, all in the scope of this patent.
Comparative example: adopt business-like polyalkene diaphragm Celgard2500 as a comparison, to illustrate the advantage of the aromatic polysulfonamide base lithium ion battery diaphragm described in this patent further.
Characterize the membrane properties in embodiment and comparative example, acquired results lists in table 1.As known from Table 1: the aromatic polysulfonamide base lithium ion battery diaphragm that this patent provides has that porosity is high, electrolyte absorb many, thermal stability good and the advantage such as excellent fireproof performance, meets the requirement of lithium ion battery separator.
Table 1
Claims (7)
1. a lithium ion battery separator, it is characterized in that, described barrier film is aromatic polysulfonamide base composite non woven film, its preparation process is as follows: step 1, aromatic polysulfonamide starched cypress and additive is added in dispersion liquid by a certain percentage, after fiberizer making beating process, obtain paper making pulp, additive comprises cellulose, aramid fiber, polyimides, nylon, polyester fiber, polyacrylonitrile, sodium alginate, one or more in sodium carboxymethylcellulose, poly(ethylene oxide), soluble polyurethane;
Step 2, paper making pulp step 1 obtained carry out manufacturing paper with pulp shaping on paper machine, obtain hygrometric state aromatic polysulfonamide base composite non woven film;
Step 3, hygrometric state aromatic polysulfonamide base composite non woven film is carried out roll compacting, drying, to remove unnecessary moisture, then through winding, just obtain aromatic polysulfonamide base lithium ion battery diaphragm.
2. a lithium ion battery separator as claimed in claim 1, it is characterized in that, the porosity of described aromatic polysulfonamide base composite non woven film is 40%-95%, and aperture is 0.05 μm-1 μm, electrolyte absorptivity is 100%-800%, and air permeability Gurley value is 1s-500s/100cc.
3. a lithium ion battery separator as claimed in claim 1, it is characterized in that, the limited oxygen index of described aromatic polysulfonamide base composite non woven film is 30%-35%; 200
oat C temperature, dimensional contraction rate is less than 0.5%.
4. a lithium ion battery separator as described in one of claims 1 to 3, is characterized in that, the thickness of described aromatic polysulfonamide base composite non woven film is 10 μm-200 μm.
5. a lithium ion battery separator as claimed in claim 1, it is characterized in that, in step 1, dispersion liquid used is one or more in deionized water, ethanol, isopropyl alcohol and glycerol.
6. a lithium ion battery separator as claimed in claim 1, it is characterized in that, the beating degree in step 1 is 50-90
osR.
7. a lithium ion battery separator as claimed in claim 1, it is characterized in that, the roll compacting pressure in step 3 is 4-40MPa, and bake out temperature is 50-100
oc.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310246401.0A CN103441228B (en) | 2013-06-21 | 2013-06-21 | Aromatic polysulfonamide base lithium ion battery diaphragm prepared by a kind of wet method copy paper technique |
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Families Citing this family (5)
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| CN104377329B (en) * | 2014-11-04 | 2017-01-11 | 中国科学院青岛生物能源与过程研究所 | Heat-resistant flame-retardant diaphragm and preparing method thereof |
| WO2017113275A1 (en) * | 2015-12-31 | 2017-07-06 | 宁波艾特米克锂电科技有限公司 | Composite nanofiber membrane for electrochemical element, preparation method and energy storage device |
| CN105887554A (en) * | 2016-04-08 | 2016-08-24 | 深圳市东城绿色投资有限公司 | Nanometer paper with polyolefin nanometer fibers and wet-method papermaking method thereof |
| CN107905018B (en) * | 2017-11-15 | 2021-01-22 | 东莞顺裕纸业有限公司 | Clean production process for producing corrugated medium paper by using waste paper box |
| CN109004158A (en) * | 2018-09-03 | 2018-12-14 | 河南克莱威纳米碳材料有限公司 | A kind of high-temperature corrosion-resistance non-woven fabrics lithium ion battery separator and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412377A (en) * | 2010-09-24 | 2012-04-11 | 比亚迪股份有限公司 | Membrane and preparation method thereof as well as lithium ion battery |
| CN102522515A (en) * | 2011-12-22 | 2012-06-27 | 中国科学院青岛生物能源与过程研究所 | Cellulose/polymer fiber composite diaphragm material for lithium secondary battery and preparation method thereof |
| CN102969471A (en) * | 2012-10-24 | 2013-03-13 | 中国科学院青岛生物能源与过程研究所 | High-temperature resistant aromatic polysulfonamide base lithium ion battery diaphragm |
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| CN102299286B (en) * | 2011-08-01 | 2014-09-03 | 华为技术有限公司 | Battery diaphragm and preparation method and lithium ion battery thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412377A (en) * | 2010-09-24 | 2012-04-11 | 比亚迪股份有限公司 | Membrane and preparation method thereof as well as lithium ion battery |
| CN102522515A (en) * | 2011-12-22 | 2012-06-27 | 中国科学院青岛生物能源与过程研究所 | Cellulose/polymer fiber composite diaphragm material for lithium secondary battery and preparation method thereof |
| CN102969471A (en) * | 2012-10-24 | 2013-03-13 | 中国科学院青岛生物能源与过程研究所 | High-temperature resistant aromatic polysulfonamide base lithium ion battery diaphragm |
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Effective date of registration: 20231116 Address after: The first and second floors of Building 2, Qingdao Belong Science and Technology Innovation Park, No. 120 Zhuzhou Road, Laoshan District, Qingdao City, Shandong Province, 266101 Patentee after: Zhongke Shenlan Huize New Energy (Qingdao) Co.,Ltd. Address before: 266101 box 30, 189 Songling Road, Laoshan District, Qingdao City, Shandong Province Patentee before: QINGDAO INSTITUTE OF BIOENERGY AND BIOPROCESS TECHNOLOGY, CHINESE ACADEMY OF SCIENCES |
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Effective date of registration: 20240110 Address after: Room 701, No. 18 Xinya Road, Wujin National High tech Industrial Development Zone, Changzhou City, Jiangsu Province, 213164 Patentee after: Zhongke Shenlan Huize New Energy (Changzhou) Co.,Ltd. Address before: The first and second floors of Building 2, Qingdao Belong Science and Technology Innovation Park, No. 120 Zhuzhou Road, Laoshan District, Qingdao City, Shandong Province, 266101 Patentee before: Zhongke Shenlan Huize New Energy (Qingdao) Co.,Ltd. |
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