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WO2009038229A1 - Membranes microporeuses et procédés de fabrication et d'utilisation de telles membranes - Google Patents

Membranes microporeuses et procédés de fabrication et d'utilisation de telles membranes Download PDF

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Publication number
WO2009038229A1
WO2009038229A1 PCT/JP2008/067575 JP2008067575W WO2009038229A1 WO 2009038229 A1 WO2009038229 A1 WO 2009038229A1 JP 2008067575 W JP2008067575 W JP 2008067575W WO 2009038229 A1 WO2009038229 A1 WO 2009038229A1
Authority
WO
WIPO (PCT)
Prior art keywords
membrane
heat
microporous membrane
microporous
stretching
Prior art date
Application number
PCT/JP2008/067575
Other languages
English (en)
Inventor
Kotaro Takita
Shintaro Kikuchi
Original Assignee
Tonen Chemical Corporation
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US11/858,587 external-priority patent/US8304114B2/en
Priority claimed from US11/864,214 external-priority patent/US8021789B2/en
Priority claimed from US11/864,350 external-priority patent/US8273279B2/en
Priority claimed from US11/868,265 external-priority patent/US8715849B2/en
Application filed by Tonen Chemical Corporation filed Critical Tonen Chemical Corporation
Priority to KR1020107006154A priority Critical patent/KR101160462B1/ko
Priority to JP2010525544A priority patent/JP2010540690A/ja
Publication of WO2009038229A1 publication Critical patent/WO2009038229A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002—Organic membrane manufacture
    • B01D67/0023—Organic membrane manufacture by inducing porosity into non porous precursor membranes
    • B01D67/0025—Organic membrane manufacture by inducing porosity into non porous precursor membranes by mechanical treatment, e.g. pore-stretching
    • B01D67/0027—Organic membrane manufacture by inducing porosity into non porous precursor membranes by mechanical treatment, e.g. pore-stretching by stretching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/26—Polyalkenes
    • B01D71/261—Polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/26—Polyalkenes
    • B01D71/262—Polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/40—Polymers of unsaturated acids or derivatives thereof, e.g. salts, amides, imides, nitriles, anhydrides, esters
    • B01D71/42—Polymers of nitriles, e.g. polyacrylonitrile
    • B01D71/421—Polyacrylonitrile
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/403—Manufacturing processes of separators, membranes or diaphragms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/403—Manufacturing processes of separators, membranes or diaphragms
    • H01M50/406—Moulding; Embossing; Cutting
    • 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
    • H01M50/414—Synthetic resins, e.g. thermoplastics or thermosetting resins
    • H01M50/417—Polyolefins
    • 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
    • H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
    • 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
    • H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
    • H01M50/491—Porosity
    • 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
    • H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
    • H01M50/494—Tensile strength
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/12—Specific ratios of components used
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/02—Details relating to pores or porosity of the membranes
    • B01D2325/0283—Pore size
    • B01D2325/02833—Pore size more than 10 and up to 100 nm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/02—Details relating to pores or porosity of the membranes
    • B01D2325/0283—Pore size
    • B01D2325/02834—Pore size more than 0.1 and up to 1 µm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/22—Thermal or heat-resistance properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/34—Molecular weight or degree of polymerisation
    • B01D2325/341—At least two polymers of same structure but different molecular weight
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2300/00—Electrolytes
    • H01M2300/0088—Composites
    • H01M2300/0091—Composites in the form of mixtures
    • 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

Definitions

  • Microporous polyolef ⁇ n membranes are useful as separators for primary batteries and secondary batteries such as lithium ion secondary batteries, lithium-polymer secondary batteries, nickel-hydrogen secondary batteries, nickel-cadmium secondary batteries, nickel-zinc secondary batteries, silver-zinc secondary batteries, etc.
  • the microporous polyolefin membrane is used as a battery separator, particularly for lithium ion batteries, the membrane's performance significantly affects the battery's properties, productivity, and safety. Accordingly, the microporous polyolefin membrane should have appropriate permeability, mechanical properties, heat resistance, dimensional stability, shut down properties, meltdown properties, electrolytic solution absorption, etc.
  • Mw and Mn of the polyethylenes are determined using a High Temperature Size Exclusion Chromatograph, or "SEC", (GPC PL 220, Polymer Laboratories), equipped with a differential refractive index detector (DRI). Three PLgel Mixed-B columns (available from Polymer Laboratories) are used. The nominal flow rate is 0.5 cm 3 /min, and the nominal injection volume was 300 DL. Transfer lines, columns, and the DRI detector were contained in an oven maintained at 145°C. The measurement is made in accordance with the procedure disclosed in "Macromolecules, Vol. 34, No. 19, pp. 6812-6820 (2001)".
  • the heat-resistant resins include polyesters such as polybutylene terephthalate (melting point: about 160-230°C), polyethylene terephthalate (melting point: about 250-270°C), etc., fluororesins, polyamides (melting point: 215-265°C), polyarylene sulfide, polyimides (Tg: 280°C or higher), polyamideimides (Tg: 280°C), polyether sulfone (Tg: 223°C), polyetheretherketone (melting point: 334°C), polycarbonates (melting point: 220-240°C), cellulose acetate (melting point: 220°C), cellulose triacetate (melting point: 300°C), polysulfone (Tg: 19O 0 C), polyetherimide (melting point: 216°C), etc.
  • polyesters such as polybutylene terephthalate (melting point: about 160-230°C), polyethylene terephthalate (melting point:
  • the microporous membrane deprived of the membrane-forming solvent can be dried by a heat-drying method, a wind-drying (e.g., air drying using moving air) method, etc. Any drying method capable of removing a significant amount of the washing solvent can be used. Preferably, substantially all of the washing solvent is removed during drying. During drying, the membrane can be exposed to a temperature that is preferably equal to or lower than Ted, more preferably 5°C or more lower than Ted. Drying is conducted until the remaining washing solvent becomes preferably 5 wt. % or less, more preferably 3 wt. %, based on the weight (on a dry basis) of the microporous membrane.
  • the membrane's electrolytic solution absorption speed is in the range of 4.5 to 10, e.g., in the range of 4.6 to 6.
  • Pore size distribution [0094] The pore size distribution of the microporous membrane is determined by mercury intrusion porosimetry. At least about 25% of the differential pore volume is associated with pores larger than 100 nanometers (nm).
  • the cathodic active materials may be inorganic compounds such as transition metal oxides, composite oxides of lithium and transition metals (lithium composite oxides), transition metal sulfides, etc.
  • the transition metals may be V, Mn, Fe, Co, Ni, etc.
  • Preferred examples of the lithium composite oxides are lithium nickelate, lithium cobaltate, lithium manganate, laminar lithium composite oxides based on (X-NaFeO 2 , etc.
  • the anode comprises a current collector, and a negative-electrode active _
  • Example 1 is repeated except for the polyolefin composition comprising 80 % by mass of the HDPE resin having a weight average molecular weight of 3.5 x 10 5 and an Mw/Mn of 13.5, and 20 % by mass of the PP resin having a weight average molecular weight of 5.3 x 10 5 and a DH f of 83.3 J/g, the re-stretching temperature is 128.5 °C, and the heat setting is at 128.5 °C.
  • Example 1 is repeated except for the polyolefin composition comprising 20 % by mass of ultra-high molecular weight polyethylene (UHMWPE) resin having a weight average molecular weight of 2 x 10 6 and an Mw/Mn of 8; and 80 % by mass of the HDPE resin having a weight average molecular weight of 3.5 x 10 5 and an Mw/Mn of 13.5.
  • UHMWPE ultra-high molecular weight polyethylene

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Cell Separators (AREA)
  • Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Secondary Cells (AREA)

Abstract

L'invention porte sur une membrane microporeuse ayant des propriétés appropriées de perméabilité, de résistance mécanique, des caractéristiques d'absorption de solution électrolytique, une résistance à la compression et une résistance au retrait par la chaleur ; et sur des procédés de production et d'utilisation d'une telle membrane de polyoléfine microporeuse. L'invention porte également sur des séparateurs de batterie comprenant une telle membrane de polyoléfine microporeuse et sur des batteries utilisant de tels séparateurs de batterie.
PCT/JP2008/067575 2007-09-20 2008-09-19 Membranes microporeuses et procédés de fabrication et d'utilisation de telles membranes WO2009038229A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020107006154A KR101160462B1 (ko) 2007-09-20 2008-09-19 미세다공성 막, 그것의 제조방법 및 그것의 사용방법
JP2010525544A JP2010540690A (ja) 2007-09-20 2008-09-19 微多孔膜およびそのような膜を製造し使用する方法

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US11/858,587 US8304114B2 (en) 2007-09-20 2007-09-20 Microporous polyolefin membrane and manufacturing method
US11/858,587 2007-09-20
US11/864,214 2007-09-28
US11/864,214 US8021789B2 (en) 2007-09-28 2007-09-28 Microporous membrane and manufacturing method
US11/864,350 2007-09-28
US11/864,350 US8273279B2 (en) 2007-09-28 2007-09-28 Microporous polyolefin membrane and manufacturing method
US11/868,265 US8715849B2 (en) 2007-10-05 2007-10-05 Microporous polymer membrane
US11/868,265 2007-10-05

Publications (1)

Publication Number Publication Date
WO2009038229A1 true WO2009038229A1 (fr) 2009-03-26

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Family Applications (3)

Application Number Title Priority Date Filing Date
PCT/JP2008/067575 WO2009038229A1 (fr) 2007-09-20 2008-09-19 Membranes microporeuses et procédés de fabrication et d'utilisation de telles membranes
PCT/JP2008/067579 WO2009038231A1 (fr) 2007-09-20 2008-09-19 Membranes microporeuses, procédés de fabrication et utilisation de telles membranes
PCT/JP2008/067581 WO2009038233A1 (fr) 2007-09-20 2008-09-19 Membranes microporeuses et procédés de fabrication et d'utilisation de telles membranes

Family Applications After (2)

Application Number Title Priority Date Filing Date
PCT/JP2008/067579 WO2009038231A1 (fr) 2007-09-20 2008-09-19 Membranes microporeuses, procédés de fabrication et utilisation de telles membranes
PCT/JP2008/067581 WO2009038233A1 (fr) 2007-09-20 2008-09-19 Membranes microporeuses et procédés de fabrication et d'utilisation de telles membranes

Country Status (3)

Country Link
JP (3) JP5453272B2 (fr)
KR (3) KR101135077B1 (fr)
WO (3) WO2009038229A1 (fr)

Cited By (10)

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JP2012048918A (ja) * 2010-08-25 2012-03-08 Sony Corp セパレータおよびこれを用いた非水電解質電池
CN102473886A (zh) * 2009-08-25 2012-05-23 旭化成电子材料株式会社 微多孔膜卷绕物及其制造方法
US8715849B2 (en) 2007-10-05 2014-05-06 Toray Battery Separator Film Co., Ltd. Microporous polymer membrane
JP2015159126A (ja) * 2015-05-01 2015-09-03 ソニー株式会社 セパレータおよびこれを用いた非水電解質電池
CN106832529A (zh) * 2017-03-06 2017-06-13 四川天邑康和通信股份有限公司 一种用于机械化补口的热缩带基片材料及其制备方法
CN108398647A (zh) * 2018-03-01 2018-08-14 杭州高特新能源技术有限公司 锂电池不同充放电曲线获取方法
CN108807821A (zh) * 2018-06-20 2018-11-13 宁德新能源科技有限公司 隔离膜和电化学装置
CN109054149A (zh) * 2018-06-29 2018-12-21 怀宁县日升塑业有限公司 一种耐撕裂塑料袋的制备方法
CN110295402A (zh) * 2019-06-11 2019-10-01 宜宾天原集团股份有限公司 一种聚苯硫醚纤维的制备方法
WO2024187671A1 (fr) * 2023-03-15 2024-09-19 中材锂膜有限公司 Membrane microporeuse en polyoléfine et son procédé de préparation, séparateur de batterie et dispositif électrochimique

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JP5453272B2 (ja) * 2007-09-20 2014-03-26 東レバッテリーセパレータフィルム株式会社 微多孔膜およびそのような膜を製造し使用する方法
KR101716292B1 (ko) * 2009-03-30 2017-03-14 도레이 배터리 세퍼레이터 필름 주식회사 미세다공막, 이러한 막의 제조 방법, 및 전지 세퍼레이터 필름으로서의 이러한 막의 사용
CN102884116B (zh) * 2010-03-15 2014-08-13 东丽电池隔膜株式会社 微孔膜、该膜的生产方法、以及该膜作为电池隔膜的应用
JP2012043629A (ja) * 2010-08-18 2012-03-01 Mitsubishi Chemicals Corp 非水系電解液二次電池用セパレータ及び非水系電解液二次電池
JP2012102198A (ja) * 2010-11-08 2012-05-31 Asahi Kasei E-Materials Corp ポリオレフィン微多孔膜、及び蓄電デバイス
JP5942127B2 (ja) * 2010-11-08 2016-06-29 旭化成株式会社 ポリオレフィン微多孔膜、及び蓄電デバイス
JP2012190729A (ja) * 2011-03-13 2012-10-04 Seiko Instruments Inc コイン型非水電解質二次電池
EP2695907B1 (fr) * 2011-04-05 2016-11-30 W-Scope Corporation Procédé de production d' une membrane poreuse
JP5670854B2 (ja) * 2011-09-29 2015-02-18 株式会社東芝 二次電池の製造方法
CN102779965B (zh) * 2012-08-09 2014-08-13 常州大学 一种具有亲水交联表层的锂离子电池隔膜及其制备方法
CN102850573B (zh) * 2012-09-21 2014-08-13 中国乐凯集团有限公司 一种湿法制备聚烯烃微孔膜的方法
KR20140062690A (ko) * 2012-11-14 2014-05-26 류수선 폴리올레핀 미세 다공막의 제조방법
KR101611229B1 (ko) 2013-01-31 2016-04-11 제일모직 주식회사 분리막의 제조 방법과 그 분리막, 및 이를 이용한 전지
JP6102380B2 (ja) * 2013-03-18 2017-03-29 日本ポリエチレン株式会社 微多孔フィルム、及びそれを用いたリチウムイオン電池用セパレータ
US9419265B2 (en) 2013-10-31 2016-08-16 Lg Chem, Ltd. High-strength electrospun microfiber non-woven web for a separator of a secondary battery, a separator comprising the same and a method for manufacturing the same
EP3260271B1 (fr) * 2015-02-20 2020-09-02 Toray Industries, Inc. Procédé de production de film plastique microporeux
JP2016160267A (ja) 2015-02-26 2016-09-05 株式会社日本製鋼所 微多孔性膜又は微多孔延伸フィルムの製造方法及び微多孔フィルム又は二軸微多孔延伸フィルム
JP6859952B2 (ja) 2015-06-05 2021-04-14 東レ株式会社 微多孔膜製造方法、微多孔膜、電池用セパレータ及び二次電池
WO2017051514A1 (fr) * 2015-09-25 2017-03-30 三洋電機株式会社 Batterie secondaire à électrolyte non aqueux cylindrique
JP6288216B2 (ja) 2016-02-09 2018-03-07 宇部興産株式会社 ポリオレフィン微多孔膜、蓄電デバイス用セパレータフィルム、及び蓄電デバイス
WO2017138512A1 (fr) * 2016-02-09 2017-08-17 宇部興産株式会社 Membrane microporeuse de polyoléfine, film de séparateur pour dispositif de stockage, et dispositif de stockage
JP7098931B2 (ja) 2016-08-29 2022-07-12 東レ株式会社 ポリオレフィン微多孔膜、リチウムイオン二次電池及びポリオレフィン微多孔膜製造方法
EP3505559B1 (fr) 2016-08-29 2025-03-19 Toray Industries, Inc. Film microporeux ainsi que procédé de fabrication de celui-ci, et batterie secondaire au lithium-ion
CN109509856B (zh) * 2018-04-04 2021-06-22 深圳市合壹新能技术有限公司 一种芳香族聚酰胺微孔膜及其制备方法和用途
CN112886138A (zh) * 2021-01-05 2021-06-01 中材锂膜有限公司 一种两面微孔不同的微孔膜及其制备方法

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KR101135077B1 (ko) 2012-04-16
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