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SG10201809926TA - Multi-layer polyolefin porous membrane, battery separatorobtained using the same, and method for producing the same - Google Patents

Multi-layer polyolefin porous membrane, battery separatorobtained using the same, and method for producing the same

Info

Publication number
SG10201809926TA
SG10201809926TA SG10201809926TA SG10201809926TA SG10201809926TA SG 10201809926T A SG10201809926T A SG 10201809926TA SG 10201809926T A SG10201809926T A SG 10201809926TA SG 10201809926T A SG10201809926T A SG 10201809926TA SG 10201809926T A SG10201809926T A SG 10201809926TA
Authority
SG
Singapore
Prior art keywords
same
layer
porous membrane
battery
polyolefin porous
Prior art date
Application number
SG10201809926TA
Inventor
Masami Sugata
Koichi Matano
Naoki Mizuno
Original Assignee
Toray Industries
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
Application filed by Toray Industries filed Critical Toray Industries
Publication of SG10201809926TA publication Critical patent/SG10201809926TA/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
    • B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/06—Embossing
    • 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
    • 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
    • H01M50/409—Separators, membranes or diaphragms characterised by the material
    • H01M50/449—Separators, membranes or diaphragms characterised by the material having a layered structure
    • 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
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/02—Cellular or porous
    • B32B2305/026—Porous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2323/00—Polyalkenes
    • B32B2323/10—Polypropylene
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Cell Separators (AREA)
  • Laminated Bodies (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

Considering that battery separators will require further thinner materials and lower costs in the future, a multi-layer polyolefin porous membrane for laminating a modified porous layer, which has an exceptionally high peel strength to a modified porous layer, and is suitable for high-speed processing during slit process and battery assembly process, and a battery separator, on which the modified porous layer is laminated, is provided. A multi-layer polyolefin porous membrane comprising at least two layers; protrusions made of polyolefin satisfying µm < W < 50 p.m (where W is a protrusion size) and 0.5 um < H (where H is a protrusion height) and being irregularly disposed on one side of the multi-layer polyolefin porous membrane at a density of not less than 3 protrusions/cm and not more than 200 2 protrusions/cm 2 ; a meltdown temperature being not lower than 165°C; an air permeation resistance being not greater than 300 sec/100 cc Air; and a membrane thickness being not greater than 2011m. FIGURE 3 78
SG10201809926TA 2014-05-09 2015-04-28 Multi-layer polyolefin porous membrane, battery separatorobtained using the same, and method for producing the same SG10201809926TA (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014098153 2014-05-09
JP2014183047 2014-09-09

Publications (1)

Publication Number Publication Date
SG10201809926TA true SG10201809926TA (en) 2018-12-28

Family

ID=54392505

Family Applications (2)

Application Number Title Priority Date Filing Date
SG10201809926TA SG10201809926TA (en) 2014-05-09 2015-04-28 Multi-layer polyolefin porous membrane, battery separatorobtained using the same, and method for producing the same
SG11201609289PA SG11201609289PA (en) 2014-05-09 2015-04-28 Multi-layer polyolefin porous membrane, battery separatorobtained using the same, and method for producing the same

Family Applications After (1)

Application Number Title Priority Date Filing Date
SG11201609289PA SG11201609289PA (en) 2014-05-09 2015-04-28 Multi-layer polyolefin porous membrane, battery separatorobtained using the same, and method for producing the same

Country Status (10)

Country Link
US (1) US10343382B2 (en)
EP (2) EP3369549A1 (en)
JP (1) JP6558363B2 (en)
KR (1) KR102276328B1 (en)
CN (1) CN106457804B (en)
HU (1) HUE052664T2 (en)
MY (1) MY179092A (en)
PL (1) PL3141385T3 (en)
SG (2) SG10201809926TA (en)
WO (1) WO2015170653A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3340343B1 (en) * 2016-12-20 2022-11-23 Asahi Kasei Kabushiki Kaisha Separator for power storage device, and laminated body, roll and secondary battery using it
JP6346986B1 (en) * 2016-12-20 2018-06-20 旭化成株式会社 Electric storage device separator and laminate, wound body and secondary battery using the same
JP7055662B2 (en) * 2017-03-03 2022-04-18 住友化学株式会社 Film manufacturing equipment and film manufacturing method
US20180254446A1 (en) * 2017-03-03 2018-09-06 Sumitomo Chemical Company, Limited Nonaqueous electrolyte secondary battery separator
KR102350567B1 (en) * 2017-04-14 2022-01-18 스미또모 가가꾸 가부시키가이샤 Nonaqueous electrolyte secondary battery insulating porous layer
CN111095601B (en) * 2017-09-29 2023-02-03 东丽株式会社 Porous film, secondary battery separator, and secondary battery
JPWO2023002818A1 (en) * 2021-07-19 2023-01-26
CN119855706A (en) * 2022-09-19 2025-04-18 阿姆泰克研究国际公司 Biaxially oriented film made from double layer oil filled sheet

Family Cites Families (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4931083B1 (en) 1970-08-17 1974-08-19
JPS60104837U (en) * 1983-12-21 1985-07-17 京セラミタ株式会社 Condensation removal device
JP3302754B2 (en) * 1993-01-26 2002-07-15 花王株式会社 How to apply oil
JPH0939075A (en) * 1995-07-26 1997-02-10 Unitika Ltd Method for producing polyamide film
JP4746771B2 (en) 2001-06-19 2011-08-10 東レ東燃機能膜合同会社 Method for producing polyolefin microporous membrane
JP4344550B2 (en) 2002-06-25 2009-10-14 東燃化学株式会社 Method for producing polyolefin microporous membrane and polyolefin microporous membrane
US7780833B2 (en) * 2005-07-26 2010-08-24 John Hawkins Electrochemical ion exchange with textured membranes and cartridge
JP5026981B2 (en) * 2005-10-24 2012-09-19 東レバッテリーセパレータフィルム株式会社 Polyolefin multilayer microporous membrane, method for producing the same, and battery separator
WO2007106868A2 (en) * 2006-03-14 2007-09-20 University Of Rochester Cell culture devices having ultrathin porous membrane and uses thereof
JP5202816B2 (en) * 2006-04-07 2013-06-05 東レバッテリーセパレータフィルム株式会社 Polyolefin microporous membrane and method for producing the same
US7981536B2 (en) 2006-08-31 2011-07-19 Toray Tonen Specialty Separator Godo Kaisha Microporous membrane, battery separator and battery
CN101535386B (en) * 2006-10-30 2012-07-04 旭化成电子材料株式会社 Polyolefin microporous membrane
JP4931083B2 (en) 2007-01-30 2012-05-16 旭化成イーマテリアルズ株式会社 Multilayer porous membrane and method for producing the same
WO2008114727A1 (en) * 2007-03-15 2008-09-25 Hitachi Maxell, Ltd. Separator for electrochemical device, electrode for electrochemical device, and electrochemical device
WO2008149895A1 (en) 2007-06-06 2008-12-11 Teijin Limited Polyolefin microporous membrane base for nonaqueous secondary battery separator, method for producing the same, nonaqueous secondary battery separator and nonaqueous secondary battery
EP2153990B1 (en) 2007-06-06 2014-04-02 Asahi Kasei E-materials Corporation Multilayer porous film
US8709640B2 (en) * 2007-08-31 2014-04-29 Toray Battery Separator Film Co., Ltd Multi-layer, microporous polyolefin membrane, its production method, battery separator and battery
US8507124B2 (en) * 2007-11-14 2013-08-13 Toray Battery Separator Film Co., Ltd. Multi-layer, microporous membrane, battery separator and battery
JP5369602B2 (en) 2008-10-22 2013-12-18 株式会社エクォス・リサーチ vehicle
US8771859B2 (en) 2009-03-13 2014-07-08 Hitachi Maxell, Ltd. Separator for battery and nonaqueous electrolyte battery using same
KR101044700B1 (en) 2009-03-16 2011-06-28 (주)베이직테크 LED display device power supply and power supply method
US20100294363A1 (en) * 2009-05-22 2010-11-25 Mitsubishi Polyester Film, Inc. Coated Polyester Film For Lamination to Ethylene-Vinyl Acetate Layers
PL2586611T3 (en) * 2010-06-25 2019-03-29 Toray Industries, Inc. Composite porous membrane, method for producing composite porous membrane and battery separator using same
JP5495210B2 (en) 2010-07-21 2014-05-21 東レバッテリーセパレータフィルム株式会社 Composite porous membrane, method for producing composite porous membrane, and battery separator using the same
JP5629542B2 (en) 2010-10-04 2014-11-19 旭化成イーマテリアルズ株式会社 Polyolefin microporous membrane
KR101813539B1 (en) * 2010-11-05 2017-12-29 도레이 카부시키가이샤 Composite porous film and method for manufacturing same
EP2832781B1 (en) * 2012-03-30 2017-12-06 Toray Industries, Inc. Polyethylene microporous membrane and process for manufacturing same
HUE039568T2 (en) * 2013-02-27 2019-01-28 Toray Industries Porous polyolefin film, battery separator obtained using same, and processes for producing these
KR102179766B1 (en) * 2013-04-22 2020-11-17 도레이 카부시키가이샤 Laminated porous membrane, process for manufacturing same and separator for battery
KR102294239B1 (en) * 2014-02-27 2021-08-25 제온 코포레이션 Binder composition for secondary battery porous membrane, slurry for secondary battery porous membrane, porous membrane for secondary battery, and secondary battery

Also Published As

Publication number Publication date
EP3369549A1 (en) 2018-09-05
PL3141385T3 (en) 2021-04-19
CN106457804A (en) 2017-02-22
MY179092A (en) 2020-10-27
KR102276328B1 (en) 2021-07-12
HUE052664T2 (en) 2021-05-28
JPWO2015170653A1 (en) 2017-06-01
US20170282513A1 (en) 2017-10-05
EP3141385A1 (en) 2017-03-15
KR20170013215A (en) 2017-02-06
US10343382B2 (en) 2019-07-09
JP6558363B2 (en) 2019-08-14
CN106457804B (en) 2018-12-28
EP3141385B1 (en) 2020-10-21
EP3141385A4 (en) 2018-03-21
WO2015170653A1 (en) 2015-11-12
SG11201609289PA (en) 2016-12-29

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