WO2005049318A1 - 複合微多孔膜及びその製造方法並びに用途 - Google Patents
複合微多孔膜及びその製造方法並びに用途 Download PDFInfo
- Publication number
- WO2005049318A1 WO2005049318A1 PCT/JP2004/017061 JP2004017061W WO2005049318A1 WO 2005049318 A1 WO2005049318 A1 WO 2005049318A1 JP 2004017061 W JP2004017061 W JP 2004017061W WO 2005049318 A1 WO2005049318 A1 WO 2005049318A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- microporous membrane
- polyolefin
- composite microporous
- composite
- coating layer
- Prior art date
Links
Classifications
-
- 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
-
- 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
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/12—Composite membranes; Ultra-thin membranes
-
- 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
- B01D69/12—Composite membranes; Ultra-thin membranes
- B01D69/1213—Laminated layers
-
- 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
- B01D71/30—Polyalkenyl halides
- B01D71/32—Polyalkenyl halides containing fluorine atoms
-
- 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
- B01D71/30—Polyalkenyl halides
- B01D71/32—Polyalkenyl halides containing fluorine atoms
- B01D71/34—Polyvinylidene fluoride
-
- 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
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/36—After-treatment
-
- 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
- H01M50/409—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
- H01M50/411—Organic material
- H01M50/414—Synthetic resins, e.g. thermoplastics or thermosetting resins
- H01M50/426—Fluorocarbon polymers
-
- 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
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/449—Separators, membranes or diaphragms characterised by the material having a layered structure
- H01M50/451—Separators, membranes or diaphragms characterised by the material having a layered structure comprising layers of only organic material and layers containing inorganic material
-
- 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
-
- 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
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/31909—Next to second addition polymer from unsaturated monomers
Definitions
- the present invention relates to a composite microporous membrane, a method for producing the same, and a use thereof, and particularly relates to a composite excellent in permeation, adhesion to an electrode, mechanical strength, heat shrinkage resistance, shutdown property, and meltdown property.
- the present invention relates to a microporous membrane, a method for producing the same, and applications. Background art
- Polyolefin microporous membranes are used for various types of separators, such as battery separators for lithium batteries and others, diaphragms for various capacitors, various filters, moisture-permeable waterproof clothing, reverse osmosis filtration membranes, ultrafiltration membranes, and microfiltration membranes. It is widely used for various purposes.
- Separators for lithium secondary batteries and lithium ion batteries have pores formed by abnormal heat generation in order to prevent heat generation, ignition, and rupture of the battery caused by short-circuiting of an external circuit, overcharging, and the like.
- the function of stopping the battery reaction due to blockage the function of maintaining the shape even at high temperatures and preventing the danger of a direct reaction between the cathode material and the anode material is required.
- microporous polyolefin membranes which are widely used as separators and are stretched at the time of production, have a problem that their shape retention characteristics at high temperatures are low!
- 2001-118558 proposes a separator for a lithium ion secondary battery in which an ion conductive polymer layer having a thickness of 5 m or less is scattered at a surface coverage of 50% or less on at least one surface of a polyolefin microporous membrane. ing.
- the solution of the ion-conductive polymer is simply applied to at least one surface of the microporous polyolefin membrane and dried, so that it may be difficult to control the pore size of the ion-conductive polymer layer. Yes, obtained There was a risk that the permeability of the separator would be insufficient.
- Japanese Patent Application Laid-Open No. 2002-216734 has a microporous layer having a bi-lidene fluoride-containing copolymer having a melting point of S145 ° C or less on both surfaces. Further, the present invention proposes a lithium battery separator comprising a three-layer microporous membrane having a microporous layer having a melting point of 140 ° C. or less as a polyolefin layer as an intermediate layer.
- a microporous membrane that also has the power of a bi-lidene fluoride-containing copolymer and a polyolefin microporous membrane are prepared in advance, and these are superimposed, stretched and pressed.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2002-240215
- Patent Document 1 Japanese Patent Application Laid-Open No. 2002-240215
- Patent Document 1 has proposed a composite membrane in which a coating layer having a strong physical strength is formed, and the average pore diameter of the porous body is larger than the maximum pore diameter of the polyolefin microporous membrane.
- At least one surface of the polyolefin microporous membrane is coated with a polymer dissolved in a good solvent, and the coated microporous membrane is immersed in a poor solvent to phase-separate and then dried.
- Method (2) At least one surface of the polyolefin porous membrane is coated with a polymer dissolved in a mixed solvent of a good solvent and a poor solvent, and after the good solvent is selectively evaporated, phase separation is performed.
- a method in which a polymer substance dissolved in a good solvent is applied to at least one surface of a polyolefin porous membrane, cooled, phase-separated by cooling, and then dried.
- the method (1) involves immersion in a poor solvent, so that the coating layer of the obtained composite film is peeled off, and the adhesiveness of the obtained separator to the electrode is insufficient, and the pores of The formation was also inadequate.
- the optimization of the poor solvent was not performed, and it was a component that a sufficient pore could not be formed in the coating layer.
- the method (2) since only a good solvent is used and no force is used, it may be difficult to control the pore size of the porous material layer, and the permeability of the obtained separator may be insufficient.
- the microporous polyolefin membrane is also used as a separation membrane in applications such as gas-gas separation, liquid-liquid separation, and solid-liquid separation, making use of its characteristic microporous structure.
- the separation membrane includes a uniform structure membrane in which the entire membrane has a microporous structure, a nonuniform structure membrane having a microporous structure provided on or in the surface of the membrane and a sparse pore structure supporting the same, and a microporous membrane.
- separation membranes composed of polyolefin microporous membranes are required to have not only separation performance but also improved mechanical strength.
- JP-A-6-198146 discloses a microfiltration membrane comprising two microporous membrane layers, one of which is thinner and has a finer pore structure than the other. Is proposed.
- This microfiltration membrane is prepared by (1) applying a solution of the polymer composition to a microporous membrane support, and being miscible with the solvent of the solution but immiscible with the polymer composition. A method of immersing the coated microporous membrane support in a liquid and then solidifying the polymer composition, or (2) simultaneously extruding two types of polymer composition solutions having different polymer composition types or concentrations and laminating them Is formed and then produced by a method of solidifying. As described above, the two microporous membrane layers can be easily separated from each other even in the above-described methods (1) and (2).
- Patent Document 1 JP-A-2002-240215
- an object of the present invention is to provide a composite microporous membrane excellent in balance among permeability, adhesion to an electrode, mechanical strength, heat shrinkage, shutdown properties and meltdown properties, a method for producing the same, and a use thereof. It is to be.
- At least one surface of the polyolefin microporous membrane comprises (a) a fluorine resin capable of gelling, (b) a good solvent thereof, and (c) ) Dipole moment Force: A composite microporous membrane obtained by applying a mixed solution containing a poor solvent having a force of Sl.8 Debye or less and drying to form a coating layer composed of the porous resin of the fluorine resin. Is the coating layer
- the present invention has been found that a cylindrical through-hole is formed in the substrate, and has an excellent balance among permeability, adhesion to electrodes, mechanical strength, heat-shrinkage resistance, shutdown characteristics and meltdown characteristics. .
- a coating layer composed of a porous body of fluororesin capable of gelling is formed on at least one surface of the polyolefin microporous membrane, and the coating layer is circular. It has a columnar through-hole.
- the average pore diameter of the through-holes is preferably 0.1 to 50 ⁇ m, more preferably 0.5 to 10 ⁇ m !.
- the fluororesin is preferably a polyvinylidene fluoride and Z or a copolymer of vinylidene fluoride.
- the bi-lidene fluoride copolymer is a poly (hexafluoropropylene-bi-lidene fluoride) copolymer.
- the thickness of the coating layer is usually 0.001-50 / zm.
- a composite microporous membrane according to a preferred embodiment of the present invention has the following physical properties (1)-(7).
- the average pore diameter of the fluorine resin layer (the average pore diameter of the cylindrical through-holes) is larger than the maximum pore diameter of the polyolefin microporous membrane.
- the air permeability (JIS P8117) is 10-1500 seconds Z100 cc, preferably 20-1500 seconds Z100 cc.
- the puncture strength is 2,500 mN / 20 ⁇ m or more, preferably 3,000 mN / 20 ⁇ m or more.
- the heat shrinkage after treatment at 130 ° C. for 1 hour is 35% or less, preferably 30% or less in both the longitudinal direction (MD) and the width direction (TD).
- the air permeability after treatment at a temperature of 130 ° C for 1 hour is 10,000 seconds / 100 cc or more.
- Meltdown temperature is 155 ° C or more.
- the method for producing a composite microporous membrane of the present invention is characterized in that at least one surface of the polyolefin microporous membrane comprises (a) a gellable fluorine resin, (b) a good solvent thereof, and (c) a dipole moment.
- Is 1.8 A mixed solution containing a poor solvent of Debye or less is applied and dried to form a coating layer made of the porous body of the fluorine resin.
- the poor solvent is at least one selected from the group consisting of aromatic hydrocarbons having 6 or more carbon atoms, 1-butanol, tertiary butanol, and aliphatic hydrocarbon powers having 5 or more carbon atoms. Is preferred.
- the aromatic hydrocarbon having 6 or more carbon atoms is preferably at least one selected from the group consisting of toluene, orthoxylene, metaxylene, paraxylene and ethylbenzene. Acetone is preferred as the good solvent.
- the polyolefin microporous membrane preferably satisfies the following conditions (8)-(14).
- the porosity is 25-95%.
- the air permeability (JIS P8117) when the thickness is converted to 20 m is 1,500 seconds or less.
- the average through hole diameter is 0.005-1 ⁇ m.
- Tensile breaking strength is 50 MPa or more.
- the piercing strength is 2,500 mN / 20 ⁇ m or more.
- the thickness is 5-200 ⁇ m.
- the polyolefin preferably satisfies the following conditions (15)-(22).
- the polyethylene according to the above (15) is ultra-high molecular weight polyethylene, high density polyethylene
- Medium-density polyethylene and low-density polyethylene are also at least one selected from group forces.
- the polyethylene according to the above (15) or (16) is an ultrahigh molecular weight polyethylene having a mass average molecular weight (Mw) of 5 ⁇ 10 5 or more.
- the ultrahigh molecular weight polyethylene according to (17) has a Mw in the range of 1 ⁇ 10 6 to 15 ⁇ 10 6 .
- the polyolefin according to any one of the above (15) to (19) contains a polyethylene composition
- the polyolefin described in any of (15) to (21) above has a shutdown function (when the temperature inside the battery rises, the microporous membrane melts to prevent microporosity in order to prevent accidents such as ignition.
- Ethylene-at-olefin copolymer produced using a branched low-density polyethylene, linear low-density polyethylene, or single-site catalyst for the purpose of providing a function to block the current by clogging.
- molecular weight of 1 X 10 3 - is a 4 X 10 polyolefin composition at least one is added to the low molecular weight polyethylene linker also groups force was also chosen of 3.
- the composite microporous membrane of the present invention is useful as a battery separator.
- the composite microporous membrane of the present invention contains at least one surface of a polyolefin microporous membrane containing a gellable fluororesin, a good solvent thereof, and a poor solvent having a dipole moment of 1.8 Debye or less.
- the mixed solution is applied and dried to form a coating layer made of the porous resin of the fluorine resin. Therefore, the coating layer has a cylindrical through-hole, and has a permeability and a contact with an electrode. Excellent balance of adhesion, mechanical strength, heat shrink resistance, shutdown properties and meltdown properties.
- the composite microporous membrane of the present invention When used as a battery separator, the composite microporous membrane of the present invention has an affinity for an electrolytic solution, is excellent in electrolyte injectability in a battery manufacturing process, and is resistant to battery reactions. It is stable and stable, has no gaps between battery components even after repeated charging and discharging, and has a low interfacial resistance between the electrode and separator. An excellent battery is obtained. Furthermore, the composite microporous membrane of the present invention is suitable as a separation membrane because of its excellent wettability to chemicals, separation performance, permeability and mechanical strength.
- FIG. 1 is a probe micrograph (X7,500) showing the surface of a composite microporous membrane of Example 1.
- FIG. 2 is a probe micrograph (X 7,500) showing the surface of the composite microporous membrane of Comparative Example 1.
- the polyolefin may be either a single polyolefin or a composition comprising two or more polyolefins.
- the polyolefin preferably comprises polyethylene and Z or polypropylene.
- the weight-average molecular weight (Mw) of the polyolefin is not particularly limited, but is usually 1 X 10-1 X 10 7 , preferably 1 X 10 4 — 5 X 10 6 , more preferably 1 X 10 5 — 4 it is an X 10 6.
- polyethylene examples include ultrahigh molecular weight polyethylene, high density polyethylene, medium density polyethylene, and low density polyethylene. These polyethylenes may be not only homopolymers of ethylene but also copolymers containing other ⁇ -olefins in small amounts. As other ⁇ -olefins other than ethylene, propylene, butene-1, hexene-1, pentene-1, 4-methylpentene-1, otaten, vinyl acetate, methyl methacrylate, styrene and the like are preferable. Among them, ultrahigh molecular weight polyethylene is preferable as polyethylene.
- Mw of ultra-high molecular weight polyethylene is preferably greater than or equal to 5 x 10 5 1 x 10 6 — more preferably within the range of 15 x 10 6 1 x 10 6 — 5 x 10 6 It is particularly preferred that the ratio is within the range of By setting the Mw of the ultrahigh molecular weight polyethylene to 15 ⁇ 10 6 or less, melt extrusion can be facilitated.
- the polyolefin comprises a polyethylene composition.
- the polyethylene composition may be a composition of two or more ultrahigh molecular weight polyethylenes having different Mw, a composition of similar high density polyethylene, a composition of similar medium density polyethylene, or a similar low density polyethylene.
- a mixture of two or more polyethylenes selected from the group consisting of ultra-high-molecular-weight polyethylene, high-density polyethylene, medium-density polyethylene, and low-density polyethylene may be used without any problem. .
- the polyethylene composition a polyethylene composition which is an ultrahigh molecular weight polyethylene having an Mw of 5 ⁇ 10 5 or more and a polyethylene having an Mw of 1 ⁇ 10 4 or more and less than 15 ⁇ 10 5 is preferable.
- the polyethylene having Mw of 1 ⁇ 10 4 or more and less than 15 ⁇ 10 5 any of high-density polyethylene, medium-density polyethylene and low-density polyethylene can be used. It is preferable to use styrene.
- polyethylene having a Mw of 1 ⁇ 10 4 or more and less than 15 ⁇ 10 5 two or more kinds of polyethylene having different Mw may be used, and two or more kinds of polyethylene having different densities may be used.
- the upper limit of the Mw of the polyethylene composition is 15 ⁇ 10 6 or less, melt extrusion can be facilitated.
- the content of Mw force 10 5 or more ultra-high molecular weight polyethylene emissions polyethylene yarn ⁇ product in the to is the entire polyethylene yarn ⁇ was 21 mass% or more as 100 mass% is preferably fixture 21 50 wt% Is more preferable.
- the ratio MwZMn (molecular weight distribution) of the mass average molecular weight (Mw) to the number average molecular weight (Mn) of the polyolefin is not limited, but is preferably in the range of 5 to 300 and in the range of 10 to 100 Is more preferable. If MwZMn is less than 5, it is difficult to extrude the polyolefin solution because the amount of high molecular weight components is too large, and if MwZMn is more than 300, the strength of the microporous membrane obtained is too low because the amount of low molecular weight components is too large.
- MwZMn is used as a measure of the molecular weight distribution, and the larger this value is, the larger the width of the molecular weight distribution is. That is, in the case of polyolefin composed of a single substance, MwZMn shows a broadening of the molecular weight distribution, and the value V is larger, and the molecular weight distribution is broader! /.
- the MwZMn of polyolefin which has a single physical strength, can be appropriately adjusted by preparing polyolefin by multistage polymerization.
- a two-stage polymerization in which a high molecular weight component is polymerized in the first stage and a low molecular weight component is polymerized in the second stage is preferable.
- polyolefin is a composition
- MwZMn the larger or smaller the Mw difference between the components to be blended, the smaller the Mw difference.
- MwZMn of the polyolefin yarn composition can be appropriately adjusted by adjusting the molecular weight and the mixing ratio of each component.
- the polyolefin composition preferably contains polypropylene in order to improve the meltdown temperature and improve the high-temperature storage characteristics of the battery.
- the Mw of the polypropylene is preferably in the range 1 ⁇ 10 4 —4 ⁇ 10 6 .
- the polypropylene besides the homopolymer, other block copolymers and ⁇ - or random copolymers containing ⁇ -olefin can also be used. Ethylene is preferred as the other (-olefin) contained in the block copolymer and the random copolymer.
- the polyolefin composition preferably contains a polyolefin that provides a shutdown function.
- a polyolefin that provides a shutdown function For example, low-density polyethylene can be used as the polyolefin having the shutdown function.
- low-density polyethylene examples include branched low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), ethylene-Za-olefin copolymer produced by a single-site catalyst, and Mw of 1 ⁇ 10 3 — A group consisting of low molecular weight polyethylene in the range of 4 ⁇ 10 3 .
- the addition amount is preferably 20 parts by mass or less based on 100 parts by mass of the entire polyolefin. If this amount is too large, the film is likely to break when stretched.
- the above-mentioned polyethylene having Mw of 1 ⁇ 10 4 or more and less than 15 ⁇ 10 5 , the above-mentioned polypropylene for improving the meltdown temperature, and the above-mentioned shutdown function are provided.
- a polybutene-1 having a Mw of 1 X 10 4 — 4 X 10 6
- a polyethylene wax having a Mw of 1 X 10 3 — 1 X 10 4 and a Mw of 1 X 10 4 — 4 X 10 6
- the ethylene- a -olefin copolymer also has a group strength of at least one selected from the group.
- the addition amount of the other polyolefin be 80 parts by mass or less based on 100 parts by mass of the entire polyolefin composition.
- the method disclosed in Japanese Patent Publication No. 6-104736 can be employed. However, it is not the meaning limited to this method. Utilizing the method disclosed in Japanese Patent Publication No. 6-104736, (0) after adding a film-forming solvent to the polyolefin, melt-kneading to prepare a polyolefin solution, and (ii) extruding the polyolefin solution from a die lip, Cooling to form a gel-like molded product, (iii) stretching the obtained gel-like molded product, (iv) washing the extended product with a washing solvent to remove the film-forming solvent, and By drying the obtained membrane, a microporous polyolefin membrane can be produced.
- the microporous polyolefin membrane used in the present invention has a porosity of 25 to 95%, an air permeability (JIS P8117) when converted to a thickness of 1,500 sec.
- the through hole diameter is 0.005 to 1 m
- the tensile strength at break is 50 MPa or more
- the piercing strength is 2,500 mN / 20 ⁇ m or more
- the heat shrinkage (105 ° CZ8 hours) is in the longitudinal direction (MD) and width. It is desirable that the direction (TD) is less than 16% and the thickness is 5-200 ⁇ m.
- a gelling-capable porous layer of fluororesin is formed on at least one surface of the polyolefin microporous membrane, and the coating layer has a cylindrical through-hole.
- the adhesion to the electrode is particularly improved. Since the fluororesin layer has cylindrical pores, it does not impair the permeability of the microporous polyolefin membrane.
- the cylindrical through-hole means a pore that penetrates almost perpendicularly from the opening to the contact surface with the microporous polyolefin membrane while maintaining a circular cross section of almost the same diameter, and is not necessarily an accurate circular hole. It need not be columnar.
- the average diameter of the cylindrical through-holes is preferably 0.1 to 50 ⁇ m, more preferably 0.5 to 10 ⁇ m. It is preferable that the average pore diameter of the cylindrical through-holes is larger than the maximum pore diameter of the polyolefin microporous membrane, whereby the permeability is further improved.
- the thickness of the fluororesin layer is usually 0.001 to 50 ⁇ m, which depends on the average through-hole diameter and the porosity of the microporous polyolefin membrane. If the thickness of the fluororesin layer is less than 0.001 m, defects occur immediately, while if it exceeds 50 m, the permeability may be deteriorated.
- Examples of the fluororesin capable of gelling include at least one member selected from the group consisting of polyvinylidene fluoride, polyvinyl fluoride, fusidani bi-lidene copolymer and vinyl fluoride copolymer.
- the content of the bi-lidene fluoride unit of the bi-fluoridene fluoride copolymer and the content of the vinyl fluoride unit of the vinyl fluoride copolymer are preferably at least 75% by mass, and more preferably at least 90% by mass. Is more preferable.
- Examples of monomers copolymerized with bi-lidene fluoride or butyl fluoride include hexafluoropropylene, tetrafluoroethylene, trifluoropropylene, ethylene, propylene, isobutylene, styrene, butyl chloride, bilidene chloride, Difluorochloroethylene, butyl formate, butyl acetate, butyl propionate, vinyl butyrate, acrylic acid and its salts, methyl methacrylate, acryl methacrylate, acrylonitrile, methallyl-tolyl, N-butoxymethyl acrylamide, acryl acetate Isopropyl acetate and the like.
- fluorine resin polyvinylidene fluoride and a copolymer of vinylidene fluoride are preferred.
- bi-lidene fluoride copolymer a poly (hexafluoropropylene-futsudani-bilidene) copolymer is preferred.
- Fluorine resin can be crosslinked, whereby the composite microporous membrane absorbs the electrolyte and can suppress the shape change when swollen at high temperature.
- the crosslinking method include a method of irradiating ionizing radiation, a method of using a crosslinking agent, and a method of vulcanization.
- the ionizing radiation ⁇ -rays, j8-rays, ⁇ -rays, electron beams and the like can be used.
- the crosslinking agent include compounds having two or more unsaturated bonds, such as butadiene and isoprene.
- the fluororesin may be modified by graft polymerization.
- Compounds that can be used for graft polymerization include, for example, ethylene, styrene, vinyl chloride, vinyl acetate, acrylic acid, methyl acrylate, methyl vinyl ketone, acrylamide, acrylonitrile, vinylidene chloride, methacrylic acid, methyl methacrylate, etc. Is mentioned. Adhesion to an electrode is further improved by using a fluorine resin as a graft polymer using the above compound. As long as the effect is not impaired, the fluororesin may be a composition in which other resins are mixed.
- the melting point of the fluororesin is higher than the melting point of the polyolefin constituting the microporous polyolefin membrane !, preferably higher by 5 ° C or more !, more preferably!
- the composite microporous membrane of the present invention comprises: (a) the fluorine resin, (b) a good solvent thereof, and (c) a poor solvent having a dipole moment of 1.8 Debye or less on at least one surface of the polyolefin microporous membrane.
- Examples of the good solvent such as acetone, N- methyl-2-pyrrolidone (NMP), dimethyl off oreum amide (DMF), dimethyl sulfoxide (DMSO), cyclohexanone, Y - butyl port Rataton (GBL) , Ethylene carbonate, dimethylacetamide, methyl ethyl ketone (II), dimethyl ether, ethyl acetate, tetrahydrofuran (THF), triethyl phosphate and vinegar anhydride Acids can be mentioned.
- acetone is preferable as the good solvent.
- the dipole moment of the poor solvent must be 1.8 Debye or less. When the dipole moment of the poor solvent exceeds 1.8 Debye, no columnar pores are formed in the fluorine resin layer, and the permeability of the resulting composite microporous membrane is significantly deteriorated.
- the dipole moment of the poor solvent is preferably 1.0 Debye or less.
- a poor solvent having a dipole moment of 1.8 Debye or less for example, an aromatic hydrocarbon having 6 or more carbon atoms, 1-butanol, tertiary butanol, isobutanol, or an aliphatic hydrocarbon having 5 or more carbon atoms. At least one of them.
- toluene (dipole moment: 0.375 Debye), ortho-xylene (dipole moment: 0.44 Debye), meta-xylene (dipole moment: 0.35 Debye), para-xylene (dipole moment: 0 Debye), ethylbenzene ( Dipole moment: 0.35 Debye), 1-butanol (dipole moment: 1.68 Debye), tertiary butanol (dipole moment: 1.66 Debye), and isobutanol (dipole moment: 1.79 Debye).
- U at least one kind preferred.
- the dipole moment is the value calculated by the molecular orbital method.
- the poor solvent having a dipole moment of 1.8 Debye or less as described above may contain a small amount of the poor solvent having a dipole moment force of more than 1.8 Debye as needed, as long as the effect of the present invention is not impaired! .
- the pores are formed by fixing a phase-separated structure in which the fluororesin phase is microphase-separated by a poor solvent by removing the poor solvent. If the good solvent remains after the poor solvent is removed, it may adversely affect the immobilization of the phase separation structure. Therefore, it is preferable that the good solvent be volatilized earlier than the poor solvent during drying. Therefore, the boiling point of the poor solvent is preferably higher than that of the good solvent, and more preferably higher than the boiling point of the good solvent. Further, it is preferable that the good solvent and the poor solvent do not azeotrope.
- the difference between the boiling points of the good solvent and the poor solvent is preferably 30 ° C or more, more preferably 50 ° C or more.
- acetone boiling point: 56.5 ° C
- ethanol boiling point: 78.3 ° C, dipole moment: 1.68 Debye
- isopyryl alcohol is used as a poor solvent. It is easier to control the diameter of the through-hole, and the shape of the through-hole becomes closer to an accurate columnar shape than using a moment: 1.79 Debye).
- preferable poor solvents for acetone include toluene (boiling point: 110.6 ° C.), ortho-xylene (boiling point: 144.4 ° C.), meta-xylene (boiling point: 139., para-xylene (boiling point: 138.4 ° C.), Ethylbenzene (boiling point: 136.2 ° C), 1-butanol (boiling point: 117.7 ° C), and isobutanol (boiling point: 107.9 ° C) power
- the content of the fluorine resin in the mixed solution is appropriately adjusted depending on the coating method and the thickness of the coating layer to be formed, but is usually 11 to 20% by mass.
- the mixing ratio between the good solvent and the poor solvent is not particularly limited, but the weight ratio of the good solvent Z to the poor solvent is preferably 10Z90-95Z5, more preferably 20 / 80-90Z10, and more preferably 30Z70-90Z10. Is particularly preferred.
- the mixture is applied by a conventional casting or coating method, for example, a roll coater method, an air knife coater method, a blade coater method, a rod coater method, a no coater method, a comma coater method, a gravure coater method, or a silk screen coater method.
- a conventional casting or coating method for example, a roll coater method, an air knife coater method, a blade coater method, a rod coater method, a no coater method, a comma coater method, a gravure coater method, or a silk screen coater method.
- a die coater method, a microgravure coater method, or the like for example, a roll coater method, an air knife coater method, a blade coater method, a rod coater method, a no coater method, a comma coater method, a gravure coater method, or a silk screen coater method.
- the good solvent and the poor solvent are removed by drying.
- a drying method a conventional method such as air drying, hot air drying, and heat drying in an oven may be used. It may be dried under reduced pressure if necessary.
- heat drying is performed after air drying.
- an air drying method for example, a method of forcibly blowing a low humidity gas can be cited.
- the heat drying temperature is preferably in the range of 50 to 90 ° C, and the heat drying time is preferably in the range of 110 minutes.
- the average through-hole diameter of the fluorine resin layer (the average diameter of the cylindrical through-holes) can be controlled by appropriately selecting the poor solvent, the concentration of the poor solvent in the mixed solution, the drying speed, and the like.
- the composite membrane of the present invention has excellent durability when used as a separator.
- Composite microporous membrane The composite microporous membrane according to a preferred embodiment of the present invention has the following physical properties.
- the air permeability (JIS P8117) is 10-1,500 seconds ZOO cc, and preferably 20-1,500 seconds Z100 cc. If the air permeability exceeds 1,500 s Z100 cc, the battery capacity during high-rate discharge or low-temperature discharge will decrease when the composite microporous membrane is used as a battery separator. On the other hand, if the temperature is less than 100 cc for 10 seconds, the shutdown will not be performed sufficiently when the temperature inside the battery rises.
- the piercing strength is 2,500 mN / 20 ⁇ m or more, preferably 3,000 mN / 20 ⁇ m or more. If the puncture strength is less than 2,500 ⁇ 20 / ⁇ m, a short circuit may occur when the composite microporous membrane is incorporated into a battery as a battery separator.
- the heat shrinkage after treatment at a temperature of 130 ° C. for 1 hour is 35% or less in both the MD and TD directions, and preferably 30% or less. If the heat shrinkage exceeds 35%, the end of the separator shrinks due to abnormal heat generation when the composite microporous membrane is incorporated into a battery as a battery separator, and the possibility of short-circuiting increases.
- air permeability after 1 hour treatment at a temperature of 130 ° C is 10,000 seconds / 100 cc or more.
- Meltdown temperature is 155 ° C or higher.
- the composite microporous membrane of the present invention has an excellent balance among permeability, adhesiveness to an electrode, mechanical strength, heat shrinkage resistance, shutdown characteristics, and meltdown characteristics. It is suitable for applications such as separators and separation membranes.
- the thickness of the composite microporous membrane is a force that can be appropriately selected according to the application. For example, when used as a battery separator, the thickness is preferably 5 to 200 ⁇ m!
- the separator comprising the composite microporous membrane of the present invention is not particularly limited in the type of battery using it, but is particularly suitable for use in lithium secondary batteries.
- Known electrodes and electrolytes may be used for the lithium secondary battery using the separator composed of the composite microporous membrane of the present invention.
- the structure of the lithium secondary battery using the separator composed of the composite microporous membrane of the present invention is well known.
- Polyethylene microporous membrane [Product name: Setira, manufactured by Tonen Chemical Co., Ltd., thickness: 21.9 m, air permeability: 253 sec / 100 cc, piercing strength: 3,028 mN / 20 ⁇ m, heat shrinkage: 16% ( MD, 105 ° C / 8hr), 5.5% (TD, 105 ° C / 8hr), Tensile breaking strength: 90 MPa (MD), 65 MPa (TD), average through hole diameter: 0.04 m, maximum hole diameter: 0.2 ⁇ m , Porosity: 47%] at a speed of 2 mZmin, and the above mixed solution was applied by a microgravure coater (roll mesh: # 55, roll diameter: 20 mm, rotation speed: 48 rpm). Then, it was dried by passing through a drying oven (4 m) controlled at 60 ° C. to produce a composite microporous membrane.
- a microgravure coater roll mesh: # 55, roll diameter: 20
- a composite microporous membrane was produced in the same manner as in Example 1 except that a fluorine-containing resin mixture was prepared using toluene (dipole moment: 0.375 Debye) as a poor solvent.
- a composite was prepared in the same manner as in Example 1 except that the mixing ratio of acetone was 68.1 parts by mass, and 29.2 parts by mass of 1-butanol (dipole moment: 1.68 Debye) was added as a poor solvent to prepare a fluororesin mixture.
- a microporous membrane was prepared.
- Kevronar2821 (trademark) as a poly (hexafluoropropylene-vinylidene fluoride) copolymer Product name, manufactured by ATOFINA, using hexafluoropropylene content: about 10% by mass, melt viscosity: 1200-2,000 Pa's), using 77.8 parts by mass of acetone and 19.5 parts by mass of mixed xylene.
- a composite microporous membrane was produced in the same manner as in Example 1, except that a fluororesin mixture was prepared.
- a composite microporous membrane was produced in the same manner as in Example 4, except that a fluorine-containing resin mixture was prepared using toluene as a poor solvent.
- Kynar2851 (trade name, manufactured by ATOFINA, a poly (hexafluoropropylene-vinylidene fluoride) copolymer); hexafluoropropylene content: about 5% by mass; melt viscosity: 1700-2,700 Using Pa's), a composite microporous membrane was produced in the same manner as in Example 4, except that a fluororesin mixture was prepared.
- a composite microporous membrane was produced in the same manner as in Example 1, except that the mixing ratio of acetone was 97.3 parts by mass, and a mixed solution of fluorine and resin was prepared without adding a poor solvent.
- Example 2 The same procedure as in Example 1 was carried out except that the mixing ratio of acetone was 68.1 parts by mass, and 29.2 parts by mass of butyl acetate (dipole moment: 1.84 Debye) was added as a poor solvent to prepare a fluororesin mixture. A composite microporous membrane was prepared.
- NMP N-methyl-2-pyrrolidone
- Example 2 While transporting the same microporous polyethylene membrane (Cetirella) as in Example 1 at a speed of 2 mZmin, a microgravure coater (roll mesh: # 55, roll diameter: 20 mm, rotation speed: 48 rpm) An NMP solution of the above fluororesin was applied. 6cm X 6 from the coated film A cm sample was cut out and immersed in an ethanol bath for 0.1 minute at room temperature. Then, it was dried in an oven controlled at 60 ° C for 5 minutes to produce a composite microporous membrane.
- a microgravure coater roll mesh: # 55, roll diameter: 20 mm, rotation speed: 48 rpm
- a composite microporous membrane was produced in the same manner as in Comparative Example 3, except that the sample membrane coated with the same fluororesin NMP solution as in Comparative Example 3 was immersed in a 1-butanol bath.
- a composite microporous membrane was produced in the same manner as in Comparative Example 3, except that the sample membrane coated with the same fluorine resin NMP solution as in Comparative Example 3 was immersed in a mixed xylene bath.
- a composite microporous membrane was produced in the same manner as in Comparative Example 3, except that the sample membrane coated with the same fluorine resin NMP solution as in Comparative Example 3 was immersed in a toluene bath.
- FIG. 1 Example 1
- FIG. 2 Comparative Example 1
- the composite microporous membrane of Example 1 has a cylindrical through hole having a diameter of 0.4 to 4 m.
- the fluororesin was deposited in the form of particles, and cylindrical pores were formed.
- Example 16 and Comparative Example 16 were measured by the following methods.
- Comparative Example 7 the physical properties of the polyethylene microporous membrane used in Examples 16 and 16 and Comparative Examples 16 were also measured by the same method.
- Coating layer thickness The thickness of the coating layer after formation was measured by a contact thickness meter (manufactured by Mitutoyo Corporation) to calculate the difference from the thickness of the polyethylene microporous membrane.
- 'Average through-hole diameter of coating layer The diameters of 10 through-holes were measured using a probe microscope and averaged.
- Puncture strength The maximum load when the composite microporous membrane was pierced with a needle having a diameter of lmm (0.5 mm R) at a speed of 2 mmZ seconds was measured, and the value converted to a film thickness of 20 m was obtained.
- Heat shrinkage Fix the composite microporous membrane to the frame plate so that it is constrained along its MD direction (constraint length: 3.5 cm), and treat at 130 ° C for 1 hour. The shrinkage in the TD direction was measured.
- melt-down characteristics A composite microporous membrane is fixed to a frame plate with an inner size of 4cm X 3cm so that the MD direction is along the long side direction of the frame plate, and heat-treated at 150 ° C for 10 minutes to break. The presence of the film was confirmed. After that, the same heat treatment was performed while increasing the temperature in steps of 5 ° C, and the temperature at which the film was broken for the first time was set as the meltdown temperature.
- a composite microporous membrane is sandwiched between two plate electrodes (positive electrode: LiCoO, negative electrode: graphite)
- the electrolyte (electrolyte: LiPF6, solvent: ethylene carbonate + getyl carbonate) was impregnated. Next, after heating and pressing at 40 ° C for 5 minutes with a press machine, the electrode and the composite microporous membrane were peeled off, and the difficulty was examined.
- the symbols indicating the criterion are ⁇ : “peeling is difficult” and X: “peelable”.
- Example No. Example 1 Example 2
- Example 3 Example 4 Polyolefin microporous membrane PE microporous membrane (4) PE microporous membrane (4) PE microporous membrane W PE microporous membrane) Coating solution
- Copolymer ( 5 ) Copolymer (5) Copolymer ( 5> Copolymer (7) content (wt%) 2.7 2.7 2.7 2.7 Good solvent Acetone Acetone Acetone content (wt%) 73.0 73.0 68.1 77.8 Poor solvent mixed xylene ( 6 > tonolene 1-butanol mixed xylene (6)
- Thickness of coating layer 1.0 1.0 0.9 0.5 Average through-hole diameter of coating layer
- Example No. Example 5 Example 6 Comparative example 1 Comparative example 2 Polyolefin microporous membrane PE microporous membrane (PE microporous membrane (PE microporous membrane)) PE microporous membrane (4) Coating solution
- Thickness of coating layer (yu m) 0.5 0.4 0.8 0.5 Average through-hole diameter of coating layer
- the fluororesin was in the state of a coating layer in which the formation of pores was insufficient. The formation of pores was insufficient. Not only the coating but also the coating and the coating layer peeled off, the coating layer peeled off, and the coating layer peeled off. It was. It was.
- Thickness of coating layer (t m) 0.8 0 0 0 Average through-hole diameter of coating layer
- Negative electrode X Notes: (1) Dipole moment.
- a composite microporous membrane is sandwiched between two plate electrodes (positive electrode: LiCoO, negative electrode: graphite).
- electrolyte LiPF6, solvent: ethylene carbonate + getyl carbonate
- heat and press at 40 ° C for 5 minutes with a press machine, peel off the electrode and the composite microporous membrane, and examine the difficulty of peeling Was.
- Microporous polyethylene membrane trade name: Setira, manufactured by Tonen Chemical Co., Ltd.
- Poly (hexafluoropropylene-bi-fluoridene fluoride) copolymer (trade name: Kynar2801, manufactured by ATOFINA, hexafluoropropylene content: about 10% by mass, melt viscosity: 2300-2700 Pa-s) 0
- poly (to hexa full O b propylene - hydrofluoric mold - isopropylidene) copolymer (trade name: Kynar2821, ATOFINA Co., to hexa full O b propylene content: about 10 mass 0/0, the melt viscosity : 1200—2000 Pa-s) 0
- the composite microporous membrane of Example 16 manufactured by the method of the present invention has air permeability, piercing strength, heat shrinkage, shutdown properties, meltdown properties, and adhesiveness to electrodes. Excellent in On the other hand, in Comparative Example 1, no poor solvent was mixed in the coating solution, so that no columnar pores were formed and the air permeability was poor. In Comparative Example 2, since a poor solvent having a dipole moment of more than 1.8 Debye was mixed in the coating solution, cylindrical pores were not formed, and the air permeability was poor. In Comparative Example 3, since the poor solvent was not mixed in the coating solution and was immersed in the poor solvent after coating, no columnar pores were formed and the air permeability was poor.
- Comparative Examples 416 since the poor solvent was not mixed into the coating solution and the film was immersed in the poor solvent after coating, not only the formation of the pores was insufficient but also the coating layer was peeled off. In Comparative Example 7, since no fluorine resin layer was provided, the shutdown characteristics and the adhesion to the electrode were poor.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Cell Separators (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Laminated Bodies (AREA)
- Secondary Cells (AREA)
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020067012026A KR101110264B1 (ko) | 2003-11-19 | 2004-11-17 | 복합 미다공막 및 그 제조 방법과 용도 |
US10/595,881 US7781094B2 (en) | 2003-11-19 | 2004-11-17 | Microporous composite membrane and its production method and use |
CN2004800341903A CN1882436B (zh) | 2003-11-19 | 2004-11-17 | 复合微多孔膜及其制造方法和用途 |
JP2005515620A JP5057419B2 (ja) | 2003-11-19 | 2004-11-17 | 複合微多孔膜及びその製造方法並びに用途 |
EP04818915A EP1685955A4 (en) | 2003-11-19 | 2004-11-17 | MICROPOROUS COMPOSITE FILM AND MANUFACTURING METHOD AND USE THEREOF |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003389841 | 2003-11-19 | ||
JP2003-389841 | 2003-11-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005049318A1 true WO2005049318A1 (ja) | 2005-06-02 |
Family
ID=34616270
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/017061 WO2005049318A1 (ja) | 2003-11-19 | 2004-11-17 | 複合微多孔膜及びその製造方法並びに用途 |
Country Status (7)
Country | Link |
---|---|
US (1) | US7781094B2 (ja) |
EP (1) | EP1685955A4 (ja) |
JP (1) | JP5057419B2 (ja) |
KR (1) | KR101110264B1 (ja) |
CN (1) | CN1882436B (ja) |
TW (1) | TWI367827B (ja) |
WO (1) | WO2005049318A1 (ja) |
Cited By (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005268095A (ja) * | 2004-03-19 | 2005-09-29 | Tomoegawa Paper Co Ltd | 電子部品用セパレータ及びその製造方法 |
JP2006100114A (ja) * | 2004-09-29 | 2006-04-13 | Sanyo Electric Co Ltd | 非水電解質電池 |
JP2006294599A (ja) * | 2005-04-13 | 2006-10-26 | ▲しょう▼宜科技股▲ふん▼有限公司 | 正負極接合型リチウム高分子電池の製造方法 |
JP2008504650A (ja) * | 2004-06-25 | 2008-02-14 | セルガード,インコーポレイテッド | 選択的イオン輸送を有するLi/MnO2電池セパレータ |
JP2008038048A (ja) * | 2006-08-08 | 2008-02-21 | Namics Corp | フィルムの製造方法 |
JP2009199730A (ja) * | 2008-02-19 | 2009-09-03 | Panasonic Corp | 非水電解質二次電池 |
JP2009212086A (ja) * | 2008-02-06 | 2009-09-17 | Sony Corp | セパレータおよびこれを用いた電池 |
JP2009535764A (ja) * | 2006-04-28 | 2009-10-01 | エルジー・ケム・リミテッド | ゲルポリマー層を含む電池用分離膜 |
JP2011048987A (ja) * | 2009-08-26 | 2011-03-10 | Sony Corp | 負極、非水電解質二次電池及びその製造方法 |
US20120028104A1 (en) * | 2009-04-23 | 2012-02-02 | Toray Tonen Specialty Separator Godo Kaisha | Thermoplastic film, methods for making such film, and the use of such film as battery separator film |
JP2012043762A (ja) * | 2010-07-21 | 2012-03-01 | Toray Ind Inc | 複合多孔質膜、複合多孔質膜の製造方法並びにそれを用いた電池用セパレーター |
JP2012184447A (ja) * | 2012-07-05 | 2012-09-27 | Namics Corp | フィルムの製造方法 |
US8460591B2 (en) | 2010-03-23 | 2013-06-11 | GM Global Technology Operations LLC | Porous membranes and methods of making the same |
JP5296917B1 (ja) * | 2012-11-16 | 2013-09-25 | 東レバッテリーセパレータフィルム株式会社 | 電池用セパレータ |
KR20140091107A (ko) | 2012-12-28 | 2014-07-21 | 에스케이이노베이션 주식회사 | 내열성 및 전기화학적 안정성이 우수한 복합 미세다공막 및 이의 제조방법 |
US8795826B2 (en) | 2008-04-08 | 2014-08-05 | Sk Innovation Co., Ltd. | Microporous polyolefin composite film with a thermally stable porous layer at high temperature |
JP2014520378A (ja) * | 2011-06-23 | 2014-08-21 | ソルベイ スペシャルティ ポリマーズ イタリー エス.ピー.エー. | 電池構成部品を製造する方法 |
JP2014192147A (ja) * | 2013-03-28 | 2014-10-06 | Mitsubishi Paper Mills Ltd | リチウムイオン二次電池用セパレータの製造装置および製造方法 |
JP2014213500A (ja) * | 2013-04-24 | 2014-11-17 | 三菱樹脂株式会社 | 積層多孔フィルム、非水電解液二次電池用セパレータ、及び非水電解液二次電池 |
JP5876577B2 (ja) * | 2012-07-26 | 2016-03-02 | 旭化成イーマテリアルズ株式会社 | 蓄電デバイス用セパレータ、積層体、及び多孔膜 |
WO2016031466A1 (ja) * | 2014-08-29 | 2016-03-03 | 住友化学株式会社 | 積層体、セパレータ及び非水二次電池 |
KR20170009838A (ko) | 2014-05-20 | 2017-01-25 | 데이진 가부시키가이샤 | 비수계 이차전지용 세퍼레이터, 그 제조 방법 및 비수계 이차전지 |
US9562164B2 (en) | 2011-11-03 | 2017-02-07 | Sk Innovation Co., Ltd. | Micro-porous polyolefin composite film having excellent heat resistance and stability and method for producing the same |
WO2017159457A1 (ja) * | 2016-03-16 | 2017-09-21 | 住友電工ファインポリマー株式会社 | 積層体の製造方法及び積層体 |
JP2017170418A (ja) * | 2016-03-16 | 2017-09-28 | 住友電工ファインポリマー株式会社 | 積層体の製造方法及び積層体 |
KR20170130368A (ko) | 2015-03-24 | 2017-11-28 | 데이진 가부시키가이샤 | 비수계 이차전지용 세퍼레이터 및 비수계 이차전지 |
WO2019065844A1 (ja) * | 2017-09-29 | 2019-04-04 | 東レ株式会社 | 多孔複合フィルム、電池用セパレータ、電池、及び多孔複合フィルムの製造方法 |
JP2019121610A (ja) * | 2018-01-09 | 2019-07-22 | 三星電子株式会社Samsung Electronics Co.,Ltd. | 複合膜、それを含んだ負極構造体及びリチウム電池、並びに複合膜製造方法 |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101480104B (zh) * | 2006-06-23 | 2011-03-09 | 皇家飞利浦电子股份有限公司 | 驱动光源阵列的方法和设备 |
KR100727248B1 (ko) * | 2007-02-05 | 2007-06-11 | 주식회사 엘지화학 | 다공성 활성층이 코팅된 유기/무기 복합 분리막 및 이를구비한 전기화학소자 |
KR101090101B1 (ko) | 2009-01-07 | 2011-12-07 | 주식회사티움리서치 | 고내열성 다공성 미세 분리막 |
US20100255376A1 (en) | 2009-03-19 | 2010-10-07 | Carbon Micro Battery Corporation | Gas phase deposition of battery separators |
KR101579639B1 (ko) * | 2009-05-18 | 2015-12-22 | 제온 코포레이션 | 다공막 및 2 차 전지 |
JP5394857B2 (ja) * | 2009-08-27 | 2014-01-22 | 富士フイルム株式会社 | 高分子膜の製造方法 |
US9786888B2 (en) * | 2010-01-13 | 2017-10-10 | Sony Corporation | Separator and nonaqueous electrolyte battery |
TWI453114B (zh) * | 2012-05-11 | 2014-09-21 | Entire Technology Co Ltd | 多孔複合膜的製造方法 |
US9882189B2 (en) | 2012-07-30 | 2018-01-30 | Teijin Limited | Separator for nonaqueous electrolyte battery, and nonaqueous electrolyte battery |
WO2014113944A1 (zh) * | 2013-01-23 | 2014-07-31 | 华南理工大学 | 一种隔膜纸及其制备方法和应用 |
TWI500507B (zh) * | 2014-04-08 | 2015-09-21 | Benq Materials Corp | 一種多孔隔離膜及其製造方法 |
CN105600741B (zh) * | 2015-12-28 | 2018-07-06 | 上海理工大学 | 一种制备有序聚合物模板的方法 |
JP6758943B2 (ja) | 2016-06-21 | 2020-09-23 | 住友化学株式会社 | 積層体 |
JP7074419B2 (ja) | 2016-06-21 | 2022-05-24 | 住友化学株式会社 | 積層体 |
JP6736375B2 (ja) | 2016-06-21 | 2020-08-05 | 住友化学株式会社 | 積層体 |
JP6755726B2 (ja) | 2016-06-21 | 2020-09-16 | 住友化学株式会社 | 積層体 |
JP6647973B2 (ja) | 2016-06-21 | 2020-02-14 | 住友化学株式会社 | 積層体 |
JP6754628B2 (ja) | 2016-06-21 | 2020-09-16 | 住友化学株式会社 | 積層体 |
US11094997B2 (en) | 2017-05-29 | 2021-08-17 | Sumitomo Chemical Company, Limited | Nonaqueous electrolyte secondary battery |
JP6561096B2 (ja) * | 2017-09-29 | 2019-08-14 | 本田技研工業株式会社 | 金属多孔質体における樹脂材の残留量測定方法 |
JP6430623B1 (ja) | 2017-12-19 | 2018-11-28 | 住友化学株式会社 | 非水電解液二次電池 |
JP6430621B1 (ja) | 2017-12-19 | 2018-11-28 | 住友化学株式会社 | 非水電解液二次電池 |
JP6430617B1 (ja) | 2017-12-19 | 2018-11-28 | 住友化学株式会社 | 非水電解液二次電池 |
US11158907B2 (en) | 2017-12-19 | 2021-10-26 | Sumitomo Chemical Company, Limited | Nonaqueous electrolyte secondary battery |
US11205799B2 (en) | 2017-12-19 | 2021-12-21 | Sumitomo Chemical Company, Limited | Nonaqueous electrolyte secondary battery |
JP6430618B1 (ja) | 2017-12-19 | 2018-11-28 | 住友化学株式会社 | 非水電解液二次電池 |
WO2019126977A1 (zh) * | 2017-12-26 | 2019-07-04 | 广州华创化工材料科技开发有限公司 | 电池隔膜及其制备方法和应用 |
CN110364661B (zh) | 2018-04-11 | 2022-11-25 | 宁德新能源科技有限公司 | 隔离膜及储能装置 |
JP7303987B2 (ja) * | 2020-03-06 | 2023-07-06 | トヨタ自動車株式会社 | セパレータ一体型電極の製造方法 |
CN114377556B (zh) * | 2022-01-19 | 2022-10-14 | 西南石油大学 | 一种耐温复合水处理膜及其制备方法 |
CN115260740B (zh) * | 2022-08-26 | 2023-04-28 | 电子科技大学长三角研究院(湖州) | 复合孔径的高机械性能辐射制冷膜、制备方法及其应用 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06224526A (ja) * | 1993-01-27 | 1994-08-12 | Japan Gore Tex Inc | 誘電体基板 |
JPH06104736B2 (ja) | 1989-08-03 | 1994-12-21 | 東燃株式会社 | ポリオレフィン微多孔膜 |
JPH08258198A (ja) * | 1995-03-22 | 1996-10-08 | Nitto Denko Corp | 吸着固定用多孔質シート |
JPH11207888A (ja) * | 1998-01-22 | 1999-08-03 | Nitto Denko Corp | 複合多孔質体 |
JP2000211073A (ja) * | 1999-01-22 | 2000-08-02 | Nitto Denko Corp | 吸着剤内包容器用積層体およびこれを用いた吸着剤内包容器 |
JP2000225328A (ja) * | 1998-11-30 | 2000-08-15 | Nitto Denko Corp | フィルタ用ろ材 |
WO2002015299A1 (en) * | 2000-08-12 | 2002-02-21 | Lg Chemical Co., Ltd. | Multi-component composite film method for preparing the same |
JP2002240215A (ja) * | 2001-02-22 | 2002-08-28 | Tonen Chem Corp | 複合膜およびその製造方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5228994A (en) | 1992-10-13 | 1993-07-20 | Millipore Corporation | Composite microporous membranes |
JP3997573B2 (ja) * | 1997-01-28 | 2007-10-24 | 三菱電機株式会社 | リチウムイオン二次電池およびその製造方法 |
JP3297034B2 (ja) * | 1999-02-22 | 2002-07-02 | ティーディーケイ株式会社 | 二次電池およびその製造方法 |
KR100367284B1 (ko) * | 1999-02-22 | 2003-01-09 | 티디케이가부시기가이샤 | 2차전지 및 그 제조방법 |
JP2001118558A (ja) | 1999-10-19 | 2001-04-27 | Asahi Kasei Corp | 部分被覆されたセパレータ |
US6533440B2 (en) * | 2000-04-26 | 2003-03-18 | Yupo Corporation | Light reflector |
US20020110732A1 (en) * | 2000-12-20 | 2002-08-15 | Polystor Corporation | Battery cell fabrication process |
JP5207569B2 (ja) | 2001-01-16 | 2013-06-12 | 旭化成イーマテリアルズ株式会社 | リチウム電池用セパレータ |
JP4201619B2 (ja) * | 2003-02-26 | 2008-12-24 | 三洋電機株式会社 | 非水電解質二次電池、及びそれに使用する電極の製造方法 |
-
2004
- 2004-11-17 JP JP2005515620A patent/JP5057419B2/ja active Active
- 2004-11-17 CN CN2004800341903A patent/CN1882436B/zh active Active
- 2004-11-17 WO PCT/JP2004/017061 patent/WO2005049318A1/ja active Application Filing
- 2004-11-17 EP EP04818915A patent/EP1685955A4/en not_active Withdrawn
- 2004-11-17 KR KR1020067012026A patent/KR101110264B1/ko active IP Right Grant
- 2004-11-17 US US10/595,881 patent/US7781094B2/en not_active Expired - Fee Related
- 2004-11-18 TW TW093135348A patent/TWI367827B/zh active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06104736B2 (ja) | 1989-08-03 | 1994-12-21 | 東燃株式会社 | ポリオレフィン微多孔膜 |
JPH06224526A (ja) * | 1993-01-27 | 1994-08-12 | Japan Gore Tex Inc | 誘電体基板 |
JPH08258198A (ja) * | 1995-03-22 | 1996-10-08 | Nitto Denko Corp | 吸着固定用多孔質シート |
JPH11207888A (ja) * | 1998-01-22 | 1999-08-03 | Nitto Denko Corp | 複合多孔質体 |
JP2000225328A (ja) * | 1998-11-30 | 2000-08-15 | Nitto Denko Corp | フィルタ用ろ材 |
JP2000211073A (ja) * | 1999-01-22 | 2000-08-02 | Nitto Denko Corp | 吸着剤内包容器用積層体およびこれを用いた吸着剤内包容器 |
WO2002015299A1 (en) * | 2000-08-12 | 2002-02-21 | Lg Chemical Co., Ltd. | Multi-component composite film method for preparing the same |
JP2002240215A (ja) * | 2001-02-22 | 2002-08-28 | Tonen Chem Corp | 複合膜およびその製造方法 |
Cited By (58)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4705334B2 (ja) * | 2004-03-19 | 2011-06-22 | 株式会社巴川製紙所 | 電子部品用セパレータ及びその製造方法 |
JP2005268095A (ja) * | 2004-03-19 | 2005-09-29 | Tomoegawa Paper Co Ltd | 電子部品用セパレータ及びその製造方法 |
JP2008504650A (ja) * | 2004-06-25 | 2008-02-14 | セルガード,インコーポレイテッド | 選択的イオン輸送を有するLi/MnO2電池セパレータ |
JP4703155B2 (ja) * | 2004-09-29 | 2011-06-15 | 三洋電機株式会社 | 非水電解質電池 |
JP2006100114A (ja) * | 2004-09-29 | 2006-04-13 | Sanyo Electric Co Ltd | 非水電解質電池 |
JP2006294599A (ja) * | 2005-04-13 | 2006-10-26 | ▲しょう▼宜科技股▲ふん▼有限公司 | 正負極接合型リチウム高分子電池の製造方法 |
JP2009535764A (ja) * | 2006-04-28 | 2009-10-01 | エルジー・ケム・リミテッド | ゲルポリマー層を含む電池用分離膜 |
JP2008038048A (ja) * | 2006-08-08 | 2008-02-21 | Namics Corp | フィルムの製造方法 |
JP2009212086A (ja) * | 2008-02-06 | 2009-09-17 | Sony Corp | セパレータおよびこれを用いた電池 |
JP2014017261A (ja) * | 2008-02-06 | 2014-01-30 | Sony Corp | セパレータおよびこれを用いた電池 |
JP2009199730A (ja) * | 2008-02-19 | 2009-09-03 | Panasonic Corp | 非水電解質二次電池 |
US8795826B2 (en) | 2008-04-08 | 2014-08-05 | Sk Innovation Co., Ltd. | Microporous polyolefin composite film with a thermally stable porous layer at high temperature |
US20120028104A1 (en) * | 2009-04-23 | 2012-02-02 | Toray Tonen Specialty Separator Godo Kaisha | Thermoplastic film, methods for making such film, and the use of such film as battery separator film |
CN102414015A (zh) * | 2009-04-23 | 2012-04-11 | 东丽东燃机能膜合同会社 | 热塑性膜、该膜的制造方法以及该膜作为电池隔膜的应用 |
US9153843B2 (en) | 2009-08-26 | 2015-10-06 | Sony Corporation | Negative electrode including solid electrolyte interface coating containing crosslinked isocyanate compound, nonaqueous electrolyte secondary battery and method for manufacturing the same |
JP2011048987A (ja) * | 2009-08-26 | 2011-03-10 | Sony Corp | 負極、非水電解質二次電池及びその製造方法 |
US8460591B2 (en) | 2010-03-23 | 2013-06-11 | GM Global Technology Operations LLC | Porous membranes and methods of making the same |
JP2012043762A (ja) * | 2010-07-21 | 2012-03-01 | Toray Ind Inc | 複合多孔質膜、複合多孔質膜の製造方法並びにそれを用いた電池用セパレーター |
JP2014520378A (ja) * | 2011-06-23 | 2014-08-21 | ソルベイ スペシャルティ ポリマーズ イタリー エス.ピー.エー. | 電池構成部品を製造する方法 |
US9562164B2 (en) | 2011-11-03 | 2017-02-07 | Sk Innovation Co., Ltd. | Micro-porous polyolefin composite film having excellent heat resistance and stability and method for producing the same |
JP2012184447A (ja) * | 2012-07-05 | 2012-09-27 | Namics Corp | フィルムの製造方法 |
JPWO2014017651A1 (ja) * | 2012-07-26 | 2016-07-11 | 旭化成イーマテリアルズ株式会社 | 蓄電デバイス用セパレータ、積層体、及び多孔膜 |
US10153473B2 (en) | 2012-07-26 | 2018-12-11 | Asahi Kasei E-Materials Corporation | Separator for electricity storage device, laminate and porous film |
JP5876577B2 (ja) * | 2012-07-26 | 2016-03-02 | 旭化成イーマテリアルズ株式会社 | 蓄電デバイス用セパレータ、積層体、及び多孔膜 |
US10811659B2 (en) | 2012-07-26 | 2020-10-20 | Asahi Kasei E-Materials Corporation | Separator for electricity storage device, laminate and porous film |
JP5296917B1 (ja) * | 2012-11-16 | 2013-09-25 | 東レバッテリーセパレータフィルム株式会社 | 電池用セパレータ |
KR101378051B1 (ko) | 2012-11-16 | 2014-03-27 | 도레이 배터리 세퍼레이터 필름 주식회사 | 전지용 세퍼레이터 |
US10608225B2 (en) | 2012-12-28 | 2020-03-31 | Sk Innovation Co., Ltd. | Micro-porous hybrid film having electro-chemical stability and method for preparing the same |
US9853273B2 (en) | 2012-12-28 | 2017-12-26 | Sk Innovation Co., Ltd. | Micro-porous hybrid film having electro-chemical stability and method for preparing the same |
KR20140091107A (ko) | 2012-12-28 | 2014-07-21 | 에스케이이노베이션 주식회사 | 내열성 및 전기화학적 안정성이 우수한 복합 미세다공막 및 이의 제조방법 |
JP2014192147A (ja) * | 2013-03-28 | 2014-10-06 | Mitsubishi Paper Mills Ltd | リチウムイオン二次電池用セパレータの製造装置および製造方法 |
JP2014213500A (ja) * | 2013-04-24 | 2014-11-17 | 三菱樹脂株式会社 | 積層多孔フィルム、非水電解液二次電池用セパレータ、及び非水電解液二次電池 |
KR20170009838A (ko) | 2014-05-20 | 2017-01-25 | 데이진 가부시키가이샤 | 비수계 이차전지용 세퍼레이터, 그 제조 방법 및 비수계 이차전지 |
JP2016051695A (ja) * | 2014-08-29 | 2016-04-11 | 住友化学株式会社 | 積層体、非水電解液二次電池用セパレータ、非水電解液二次電池用部材及び非水電解液二次電池 |
JP5932161B1 (ja) * | 2014-08-29 | 2016-06-08 | 住友化学株式会社 | 積層体、セパレータ及び非水二次電池 |
KR101689494B1 (ko) | 2014-08-29 | 2016-12-23 | 스미또모 가가꾸 가부시키가이샤 | 적층체, 세퍼레이터 및 비수 이차 전지 |
KR20160086977A (ko) * | 2014-08-29 | 2016-07-20 | 스미또모 가가꾸 가부시키가이샤 | 적층체, 비수 전해액 이차 전지용 세퍼레이터, 비수 전해액 이차 전지용 부재 및 비수 전해액 이차 전지 |
KR20160086976A (ko) * | 2014-08-29 | 2016-07-20 | 스미또모 가가꾸 가부시키가이샤 | 적층체, 적층체를 포함하는 비수 전해액 이차 전지용 세퍼레이터 및 비수 전해액 이차 전지용 세퍼레이터를 포함하는 비수 전해액 이차 전지 |
KR101713534B1 (ko) | 2014-08-29 | 2017-03-08 | 스미또모 가가꾸 가부시키가이샤 | 적층체, 비수 전해액 이차 전지용 세퍼레이터, 비수 전해액 이차 전지용 부재 및 비수 전해액 이차 전지 |
KR101713533B1 (ko) | 2014-08-29 | 2017-03-08 | 스미또모 가가꾸 가부시키가이샤 | 적층체, 적층체를 포함하는 비수 전해액 이차 전지용 세퍼레이터 및 비수 전해액 이차 전지용 세퍼레이터를 포함하는 비수 전해액 이차 전지 |
US9711776B2 (en) | 2014-08-29 | 2017-07-18 | Sumitomo Chemical Company, Limited | Laminated body, separator, and nonaqueous secondary battery |
US9711775B2 (en) | 2014-08-29 | 2017-07-18 | Sumitomo Chemical Company, Limited | Laminated body, separator, and nonaqueous secondary battery |
KR101762087B1 (ko) * | 2014-08-29 | 2017-07-26 | 스미또모 가가꾸 가부시키가이샤 | 비수 이차 전지용 세퍼레이터, 적층체, 적층체의 제조 방법, 및 비수 이차 전지 |
WO2016031466A1 (ja) * | 2014-08-29 | 2016-03-03 | 住友化学株式会社 | 積層体、セパレータ及び非水二次電池 |
JP2016049774A (ja) * | 2014-08-29 | 2016-04-11 | 住友化学株式会社 | 積層体、積層体を含む非水電解液二次電池用セパレータおよび非水電解液二次電池用セパレータを含む非水電解液二次電池 |
JP2016051696A (ja) * | 2014-08-29 | 2016-04-11 | 住友化学株式会社 | 非水二次電池用セパレータ、積層体、積層体の製造方法、および非水二次電池 |
KR20160096536A (ko) * | 2014-08-29 | 2016-08-16 | 스미또모 가가꾸 가부시키가이샤 | 적층체, 세퍼레이터 및 비수 이차 전지 |
US9865857B2 (en) | 2014-08-29 | 2018-01-09 | Sumitomo Chemical Company, Limited | Laminated body, separator, and nonaqueous secondary battery |
US10014506B2 (en) | 2014-08-29 | 2018-07-03 | Sumitomo Chemical Company, Limited | Laminated body, separator, and nonaqueous secondary battery |
KR20170130368A (ko) | 2015-03-24 | 2017-11-28 | 데이진 가부시키가이샤 | 비수계 이차전지용 세퍼레이터 및 비수계 이차전지 |
US11183735B2 (en) | 2015-03-24 | 2021-11-23 | Teijin Limited | Separator for a non-aqueous secondary battery, and non-aqueous secondary battery |
JP2017170418A (ja) * | 2016-03-16 | 2017-09-28 | 住友電工ファインポリマー株式会社 | 積層体の製造方法及び積層体 |
WO2017159457A1 (ja) * | 2016-03-16 | 2017-09-21 | 住友電工ファインポリマー株式会社 | 積層体の製造方法及び積層体 |
WO2019065844A1 (ja) * | 2017-09-29 | 2019-04-04 | 東レ株式会社 | 多孔複合フィルム、電池用セパレータ、電池、及び多孔複合フィルムの製造方法 |
JPWO2019065844A1 (ja) * | 2017-09-29 | 2020-09-10 | 東レ株式会社 | 多孔複合フィルム、電池用セパレータ、電池、及び多孔複合フィルムの製造方法 |
JP7001092B2 (ja) | 2017-09-29 | 2022-01-19 | 東レ株式会社 | 多孔複合フィルム、電池用セパレータ、電池、及び多孔複合フィルムの製造方法 |
JP2019121610A (ja) * | 2018-01-09 | 2019-07-22 | 三星電子株式会社Samsung Electronics Co.,Ltd. | 複合膜、それを含んだ負極構造体及びリチウム電池、並びに複合膜製造方法 |
JP7446656B2 (ja) | 2018-01-09 | 2024-03-11 | 三星電子株式会社 | 複合膜、それを含んだ負極構造体及びリチウム電池、並びに複合膜製造方法 |
Also Published As
Publication number | Publication date |
---|---|
CN1882436B (zh) | 2010-12-15 |
JPWO2005049318A1 (ja) | 2007-06-07 |
KR101110264B1 (ko) | 2012-03-13 |
CN1882436A (zh) | 2006-12-20 |
US7781094B2 (en) | 2010-08-24 |
TWI367827B (en) | 2012-07-11 |
TW200535004A (en) | 2005-11-01 |
KR20060101541A (ko) | 2006-09-25 |
EP1685955A4 (en) | 2009-10-21 |
JP5057419B2 (ja) | 2012-10-24 |
EP1685955A1 (en) | 2006-08-02 |
US20070072069A1 (en) | 2007-03-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5057419B2 (ja) | 複合微多孔膜及びその製造方法並びに用途 | |
EP3159163B1 (en) | Polyolefin multilayer microporous film, method for producing same, and cell separator | |
JP5635970B2 (ja) | 高耐熱性被覆層を有するポリオレフィン系複合微多孔膜の製造方法 | |
US20050208383A1 (en) | Electronic component separator and method for producing the same | |
JP5588964B2 (ja) | 高耐熱性多孔性被覆層を有するポリオレフィン系複合微多孔膜 | |
TWI451969B (zh) | 聚烯烴多層微多孔膜及電池用隔離材 | |
JP5548290B2 (ja) | 多層微多孔膜、電池用セパレータ及び電池 | |
EP2879206B1 (en) | Separator for energy storage device, laminated body, and energy storage device | |
KR101227325B1 (ko) | 다층 다공막 및 그의 제조 방법 | |
JP5094844B2 (ja) | 微多孔膜、電池用セパレータ及び電池 | |
JP4540607B2 (ja) | ポリオレフィン微多孔膜 | |
JP5495210B2 (ja) | 複合多孔質膜、複合多孔質膜の製造方法並びにそれを用いた電池用セパレーター | |
JP2021511637A (ja) | 改良されたコーティングされたセパレータ、リチウム電池および関連方法 | |
US20210218108A1 (en) | Polyolefin composite porous film, method of producing same, battery separator, and battery | |
JP5156158B2 (ja) | 複合膜およびその製造方法 | |
US20190088917A1 (en) | Polyolefin microporous membrane, method of producing polyolefin microporous membrane, battery separator, and battery | |
KR102454819B1 (ko) | 비수계 이차전지용 세퍼레이터 및 비수계 이차전지 | |
JP2022140606A (ja) | 電気化学素子用セパレータ及びこの製造方法 | |
JPWO2013153954A1 (ja) | 電池用セパレータ及びその製造方法 | |
KR20200108418A (ko) | 비수계 이차 전지용 세퍼레이터 및 비수계 이차 전지 | |
JP2008186722A (ja) | 高耐熱性と高透過性を兼ね備えた多孔膜およびその製法 | |
JP7351906B2 (ja) | 蓄電デバイス用セパレータ及び蓄電デバイス | |
WO2024010091A1 (ja) | 蓄電デバイス用セパレータ | |
TWI381571B (zh) | Nonaqueous battery separator and manufacturing method thereof | |
JPH1180416A (ja) | アクリロニトリル系樹脂製多孔質膜 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200480034190.3 Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2005515620 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007072069 Country of ref document: US Ref document number: 10595881 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2004818915 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020067012026 Country of ref document: KR |
|
WWP | Wipo information: published in national office |
Ref document number: 2004818915 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 1020067012026 Country of ref document: KR |
|
WWP | Wipo information: published in national office |
Ref document number: 10595881 Country of ref document: US |