WO2008105555A1 - セパレータ - Google Patents
セパレータ Download PDFInfo
- Publication number
- WO2008105555A1 WO2008105555A1 PCT/JP2008/053728 JP2008053728W WO2008105555A1 WO 2008105555 A1 WO2008105555 A1 WO 2008105555A1 JP 2008053728 W JP2008053728 W JP 2008053728W WO 2008105555 A1 WO2008105555 A1 WO 2008105555A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- heat
- separator
- resistant layer
- layer
- filler
- Prior art date
Links
Classifications
-
- 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
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
-
- 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
- H01M50/423—Polyamide resins
-
- 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
- H01M50/431—Inorganic 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
- H01M50/431—Inorganic material
- H01M50/434—Ceramics
-
- 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
- H01M50/443—Particulate 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
- H01M50/446—Composite material consisting of a mixture of organic and inorganic materials
-
- 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/581—Devices or arrangements for the interruption of current in response to temperature
-
- 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
Definitions
- the present invention relates to a separator. Specifically, it relates to a separator for a non-aqueous electrolyte secondary battery.
- the separator is made of a porous film having fine pores, and is used in non-aqueous electrolyte secondary batteries such as lithium ion secondary batteries and lithium polymer secondary batteries.
- non-aqueous electrolyte secondary battery when an abnormal current flows in the battery due to a short circuit between the positive and negative electrodes, the current is interrupted to prevent an excessive current from flowing (shut down).
- the separator must be shut down at the lowest possible temperature (blocking the pores of the porous film) when the normal operating temperature is exceeded, and after shutting down, the separator is heated to a certain high temperature. Even if the temperature in the battery rises, it is required to maintain a shut-down state without being broken by the temperature, in other words, to have high heat resistance.
- a separator made of a laminated porous film formed by force laminating a polyolefin layer and a heat-resistant layer can be mentioned, and specific examples thereof include JP 2005-28553 A and JP 2006-032246 A.
- JP 2005-28553 A and JP 2006-032246 A JP 2005-28553 A and JP 2006-032246 A.
- the coated polyethylene film After coating one side of a polyethylene film with a solution obtained by dissolving a polyamide, which is a heat-resistant material, in an N-methyl-2-pyrrolidone solution, which is a water-soluble solvent, the coated polyethylene film The separator obtained by removing the N-methyl-2-pyrrolidone solution and precipitating and solidifying the polyamide by dipping in water and drying is specifically described. Disclosure of the invention
- An object of the present invention is to provide a separator having high heat resistance and capable of increasing the electric capacity of the battery when used in a non-aqueous electrolyte secondary battery.
- the present invention provides the following inventions.
- a separator comprising a laminated porous film formed by force lamination with a heat-resistant layer containing a heat-resistant resin and a shirt down layer containing a thermoplastic resin, wherein the heat-resistant layer has a thickness of 1 ⁇ m or more and 10 ⁇ m m or less, and the heat-resistant layer further contains a filler composed of substantially spherical particles.
- thermoplastic resin is polyethylene
- ⁇ 7> The separator according to any one of ⁇ 1> to ⁇ 6>, wherein the weight of the filler is 20 or more and 95 or less when the total weight of the heat-resistant layer is 100.
- the present invention it is possible to provide a separator that has high heat resistance and can increase the electric capacity of the battery when used in a non-aqueous electrolyte secondary battery.
- the battery is also excellent in rate characteristics (large current discharge characteristics), and the present invention is extremely useful industrially.
- the present invention relates to a separator one data composed of a laminated porous film formed by shirt Todau emission layer and the force? Lamination containing a heat-resistant layer and a thermoplastic resin containing a heat-resistant resin, the thickness of said heat-resistant layer 1
- a separator containing a filler that is not less than ⁇ m and not more than 10 ⁇ m , and wherein the heat-resistant layer further comprises substantially spherical dog particles.
- the present invention relates to a separator having a relatively thin heat-resistant layer having a thickness of 1 / m or more and 10; m or less, and further 1 m or more and 5 m or less, wherein the heat-resistant layer contains a specific filler. .
- this reduces the heat shrinkage rate of the heat-resistant layer can further increase the heat resistance of the separator, and the heat-resistant layer has a diameter suitable for a separator of 0.03 / Uniform fine pores of about m to 0.15 m are generated and used in a non-aqueous electrolyte secondary battery, the ion permeability can be made uniform, and the electric capacity of the battery The present inventors believe that it could be made larger.
- the thickness of the heat-resistant layer is 1 / m or more and 5 m or less, more preferably 1 m or more and 4 // m or less, the effect of the present invention can be further exerted.
- the heat-resistant layer in the present invention has fine pores, and the size (diameter) of the pores is usually 3 m or less, preferably 1 m or less, more preferably 0 .mu.m or less. Average The better, the better. Porosity of the heat-resistant layer is usually 3 0-8 0 vol 0/0, preferably from 4 0-7 0 vol 0/0.
- polyamide, polyimide, polyamide, polycarbonate, polyacetal, polysulfone, polyphenylene sulfide, polyetheretherketone, aromatic polyester, polyethersulfone, polyetherimide are used as the heat-resistant resin.
- Polyamide, polyimide, polyimide, polyethersulfone, and polyether imidazole are preferred from the viewpoint of further improving heat resistance, and more preferred are polyamide, polyimide, and polyimide.
- nitrogen-containing aromatic polymers such as aromatic polyamides (para-oriented aromatic polyamides, meta-oriented aromatic polyamides), aromatic polyimides, aromatic polyamides, An aromatic polyamide and a production surface are preferred, and para-oriented aromatic polyamides (hereinafter sometimes referred to as “paralamides”) are particularly preferred.
- para-oriented aromatic polyamides hereinafter sometimes referred to as “paralamides”.
- examples of the heat resistant resin include poly-4-methylpentene 1-1 and cyclic olefin-based polymers.
- the heat resistance can be increased, that is, the thermal film breaking temperature can be increased.
- the thermal film breaking temperature is a force that depends on the type of heat-resistant resin. Usually, the thermal film breaking temperature is 160 ° C or higher.
- the thermal film breaking temperature can be increased to a maximum of about 400.
- the thermal film breaking temperature can be increased up to about 2500, and when using cyclic olefin-based polymers, up to about 300 V. it can.
- Laramide is obtained by condensation polymerization of para-oriented aromatic diamine and para-oriented aromatic distrength rubonic acid halide, and the amide bond is in the para position of the aromatic ring or an oriented position equivalent thereto (for example, 4, 4, 1-biphenylene, 1,5-naphthalene, 2,6_naphthalene, etc., which consist essentially of repeating units bonded in the opposite orientation (coaxial or parallel orientation positions).
- the aromatic polyimide is preferably a wholly aromatic polyimide produced by condensation polymerization of an aromatic dianhydride and diamine.
- the dianhydride include pyromellitic dianhydride, 3, 3,, 4, 4, monodiphenylsulfonetetracarboxylic dianhydride, 3, 3,, 4, 4, 1 benzophenone tetracarboxylic dianhydride, 2, 2, 1 bis (3,4-dicarboxyphenyl) hexafluoropropane, 3, 3,, 4, 4, 1 bibiphenyl tetracarboxylic acid And anhydrides.
- diamines include oxydianiline, paraf-ene didiamine, benzophenone diamine, 3, 3, monomethylene diamine, 3, 3, monodiamino benzophenone, 3, 3, diaminodiphenyl sulfone, 1 , 5, 1 Naphthalenediamine and the like
- the present invention is not limited to these.
- it can be suitably used as a polyimide that is soluble in a solvent.
- An example of such a polyimide is a polycondensate of 3,3,4,4,1-diphenylsulfonetetrahydrorubonic dianhydride and an aromatic diamine.
- aromatic polyimide examples include those obtained from condensation polymerization using aromatic dicarboxylic acid and aromatic diisocyanate, and those obtained from condensation polymerization using aromatic diacid anhydride and aromatic diisocyanate.
- aromatic dicarboxylic acids include isophthalic acid and terephthalic acid.
- aromatic dianhydride include force such as trimellitic anhydride.
- aromatic diisocyanates include 4, 4, 1-diphenylmethane diisocyanate, 2, 4_tolylene diisocyanate, 2, 6-tolylene diisocyanate, ortho-tolylrane diisocyanate, m-xylene zy Socienate and so on.
- the shutdown layer contains a thermoplastic resin.
- the shut-down layer has micropores as in the heat-resistant layer, and the size of the pores is usually 3 m or less, preferably 1 / m or less.
- Porosity shutdown layer is usually 3 0-8 0 vol 0/0, preferably from 4 0-7 0% by volume.
- the shutdown layer plays a role of closing the micropores by softening the thermoplastic resin that constitutes the shutdown layer.
- the thermoplastic resin can be selected from those that soften at 80 to 180, and those that do not dissolve in the electrolyte in the nonaqueous electrolyte secondary battery can be selected.
- Specific examples include polyolefins such as polyethylene and polypropylene, and thermoplastic polyurethanes, and a mixture of two or more of these may be used.
- Polyethylene is preferred in terms of softening and shutting down at a lower temperature.
- Specific examples of the polyethylene include polyethylene such as low density polyethylene, high density polyethylene, and linear polyethylene, and also include ultrahigh molecular weight polyethylene.
- the thermoplastic resin mosquitoes that contain at least ultrahigh molecular weight polyethylene? Preferably les.
- the thermoplastic resin may preferably contain a wax made of polyolefin having a low molecular weight (weight average molecular weight of 10,000 or less).
- the thickness of the shutdown layer is usually from 3 to 30 111, and more preferably from 5 to 20 ⁇ m.
- the separator of the invention will be a force? Laminated heat-resistant layer and the sheet catcher Tsu down layer, the thickness of the separator Ichita, usually 2 0 ⁇ ⁇ or less, or preferably less 1 0 / zm. Further, when the thickness of the heat-resistant layer is A ( ⁇ m) and the thickness of the shutdown layer is ⁇ ( ⁇ m), it is preferable that the value of AZB is 0.1 or more and 1 or less.
- the filler according to the present invention is composed of substantially spherical particles. If the particles constituting the filler are substantially spherical particles, The filler may be selected from organic powder, inorganic powder or a mixture thereof as the material. In the present invention, an approximate sphere; Dog particles contain true spherical particles. That is, in the present invention, the substantially spherical particles include particles having a particle aspect ratio (particle major axis / particle minor axis) in the range of 1 or more and 1.5 or less. The aspect ratio of the particles can be measured by electron micrographs.
- Examples of the organic powder include styrene, vinyl ketone, acrylonitrile, methyl methacrylate, ethyl methacrylate, glycidyl methacrylate, glycidyl acrylate, and methyl acrylate, or a copolymer of two or more kinds, polytetrafluoro Fluorine resins such as fluoroethylene, tetrafluoroethylene-1, hexafluoropropylene copolymer, tetrafluoroethylene, ethylene copolymer, polyvinylidene fluoride; melamine resin; urea resin; polyolefin; Examples include powder power made of organic substances such as methacrylate. These organic powders may be used alone or in combination of two or more. Among these organic powders, polytetrafluoroethylene powder is preferable from the viewpoint of chemical stability.
- the inorganic powder examples include powders made of inorganic materials such as metal oxides, metal nitrides, metal carbides, metal hydroxides, carbonates, sulfates, and specific examples include alumina, silica, and the like. And powders composed of titanium dioxide, calcium carbonate or the like.
- the inorganic powder may be used alone or in combination of two or more.
- alumina powder is preferable from the viewpoint of chemical stability.
- the substantially spherical particles constituting the filler are alumina particles.
- the alumina particles are preferably alumina particles having substantially no crushing surface.
- Japanese Patent Application Laid-Open Nos. Hei 6-191 833, Japanese Patent Application Laid-Open Nos. Hei 6-191 816 and Japanese Patent Application Laid-Open No. Hei 7-2 0 6 4 3 0 The method described in the publication may be used.
- the number average particle diameter (diameter) of the substantially spherical particles constituting the filler is not less than 0.01 and not more than 2; m, preferably not less than 0.1 and not more than 1 m, more preferably not more than 0.001.
- the number average particle diameter is a value measured from a scanning electron micrograph. Specifically, 50 particles are arbitrarily extracted from the substantially spherical particles photographed in the photograph, each particle size is measured, and the average value is used.
- the porosity of the heat-resistant layer and the size of the micropores are further improved. It can be controlled precisely.
- the filler content in the heat-resistant layer is as follows.
- the filler weight is usually 20 or more and 95 or less. Preferably, it is 30% by weight or more and 90% by weight or less.
- the filler is composed of substantially spherical particles.
- the filler may contain particles that are not substantially spherical, such as plate-like particles and needle-like particles. Good.
- para-oriented aromatic polyamide is used as a heat-resistant resin, and as a filler, an alumina having a number average particle size of 0.1 to 1 / ym and having substantially no fracture surface.
- a combination using a filler composed of particles is particularly preferable.
- the permeability by the Gurley method is 50 to 30. It is preferably 0 000 cc, more preferably 5 0 to 2 000 s 1 000 cc. In the present invention, even when the micropore size is as small as about 0.1; / m or less, the above-mentioned good air permeability can be exhibited.
- the separator of the present invention is particularly useful as a separator for non-aqueous electrolyte secondary batteries such as lithium ion secondary batteries and lithium polymer secondary batteries. It can also be used for secondary batteries, non-aqueous electrolyte primary batteries, and capacitors. Next, the manufacturing method of the separator of this invention is demonstrated.
- the method for producing the shirt down layer in the present invention is not particularly limited.
- a film was formed by adding a plasticizer to a thermoplastic resin. Thereafter, a method of removing the plasticizer with an appropriate solvent, or a film made of a thermoplastic resin produced by a known method as described in JP-A-7-304011, Examples thereof include a method of selectively stretching a structurally weak amorphous portion of the film to form micropores.
- Shutdown layer strength in the present invention When formed from a polyolefin-based resin containing an ultra-high molecular weight polyethylene and a low molecular weight polyolefin having a weight average molecular weight of 10,000 or less, from the viewpoint of production cost, it is shown below. It is preferable to manufacture by such a method. That is,
- a method comprising a step of stretching the sheet obtained in step (3) to form a shutdown layer, or
- Ultra high molecular weight polyethylene 100 parts by weight, low molecular weight polyolefin having a weight average molecular weight of 10,000 or less, 5 to 200 parts by weight, and inorganic filler from 100 to 400 parts by weight Kneading to obtain a polyolefin resin composition
- Step (3) Step of removing inorganic filler (C) from the stretched sheet obtained in step (3) to form a shutdown layer
- the shirt of the present invention in which the shirt down layer and heat-resistant layer obtained are laminated. From the viewpoint of lowering the shirt down temperature of the pallet overnight, the former method, that is, the method of stretching after removing the inorganic filler in the sheet is preferred. From the viewpoint of the strength and ion permeability of the shirt tow down layer, the inorganic filler used is
- the number average particle diameter is preferably 0.5 or less, and more preferably 0.2 ⁇ m or less.
- the number average particle diameter is a value measured from a scanning electron micrograph. Specifically, 50 particles are arbitrarily extracted from the inorganic filler particles photographed in the photograph, each particle size is measured, and the average value is used.
- Inorganic fillers include calcium carbonate, magnesium carbonate, barium carbonate, zinc oxide, calcium oxide, aluminum hydroxide, magnesium hydroxide, hydroxylation power, calcium sulfate, silicic acid, zinc oxide, calcium chloride, sodium chloride, sulfuric acid Examples include magnesium. These inorganic fillers can be removed from the sheet or film with acid or alkali solution. Since the easily available ones of the fine particle size, that mosquitoes? Good preferable to use calcium carbonate in the present invention.
- the production method of the above-mentioned polyolefin resin composition is not particularly limited, but is a device for mixing the materials constituting the polyolefin resin composition such as polyolefin resin and inorganic filler, such as a roll, a Banbury mixer, a single screw extruder, Mix using a twin screw extruder to obtain a polyolefin resin composition.
- additives such as fatty acid esters, stabilizers, antioxidants, ultraviolet absorbers and flame retardants may be added as necessary.
- the method for producing a sheet comprising the polyolefin resin composition is not particularly limited, and it may be produced by a sheet molding method such as inflation processing, calendar processing, T-die extrusion processing, or scuffing method. it can. Since it is possible to obtain a sheet force with higher film thickness accuracy, it is recommended to manufacture by the following method.
- a preferred method for producing a sheet comprising a polyolefin resin composition is a polyolefin-based resin composition using a pair of rotational molding tools adjusted to a surface temperature higher than the melting point of the polyolefin resin contained in the polyolefin resin composition.
- Pressure resin composition It is a method of forming by extension.
- the surface temperature of the rotary forming tool is preferably (melting point + 5) ° C. or higher. Further, the upper limit of the surface temperature is preferably (melting point +30) ° C or less, more preferably (melting point +20) ° C or less.
- Examples of a pair of rotational molding tools include rolls and belt forces.
- peripheral speeds of both rotary forming tools do not necessarily have to be exactly the same, and the difference between them should be within ⁇ 5%.
- the polyolefin resin composition discharged in a strand form from the extruder may be directly introduced between the pair of rotary molding tools.
- Polyolefin-based resin compositions that have been converted may be used.
- a tenter, a roll, an autograph or the like When stretching a sheet made of a polyolefin-based resin composition or a sheet from which the inorganic filler has been removed, a tenter, a roll, an autograph or the like can be used.
- Draw ratio from the viewpoint of gas permeability is 2-1 doubled force?
- the more favorable Mashiku is 4-1 0 times.
- the stretching temperature is usually carried out at a temperature below the softening point than the melting point of the polyolefin-based resin, it forces? Preferably carried out at 8 0 ⁇ 1 1 5 ° C. If the stretching temperature is too low, film breakage tends to occur during stretching, and if it is too high, the air permeability and ion permeability of the resulting film may be lowered. Also after stretching is that mosquitoes? Virtuous preferable to perform the Hitose' door.
- the heat set temperature should be less than the melting point of the polyolefin resin.
- a separator composed of a laminated porous film is obtained by laminating a shutdown layer containing a thermoplastic resin obtained by the method as described above and a heat-resistant layer.
- the heat-resistant layer may be provided on one side of the shirt down layer or on both sides.
- the heat resistant layer and the shirt A method of forming a heat-resistant layer by coating a coating solution containing a heat-resistant resin and a filler on at least one side of a shirt toe down layer, etc.
- the heat-resistant layer is relatively thin, and the latter method is preferable from the viewpoint of productivity.
- a method for forming a heat-resistant resin layer by applying a coating solution containing a heat-resistant resin and a filler on at least one surface of the shutdown layer there is a method power specifically including the following steps. .
- a slurry-like coating solution is prepared by dispersing 1 to 150 parts by weight of filler in 100 parts by weight of a heat resistant resin in a polar organic solvent solution containing 100 parts by weight of heat resistant resin.
- the heat-resistant resin is deposited from the coating film by means of humidification, solvent removal, or immersion in a solvent that does not dissolve the heat-resistant resin, and then dried as necessary.
- the coating liquid was applied continuously by the coating apparatus described in JP-A No. 2 0 0 1-3 16 60 6 and the method described in JP-A No. 2 0 1 -2 3 60 2. It is preferable to work.
- a polar amide solvent or a polar urea solvent can be used as the polar organic solvent.
- N The force includes, but is not limited to, N-dimethylformamide, N, N-dimethylacetamide, N-methyl-2-pyrrolidone (NMP), tetramethylurea and the like.
- an alkali metal or alkaline-earth metal chloride during para- mer polymerization for the purpose of improving the solubility of the para- amide in a solvent.
- Specific examples include, but are not limited to, the power of lithium chloride or lucium chloride.
- the amount of the chloride added to the polymerization system is preferably in the range of 0.5 to 6.0 mol, more preferably in the range of 1.0 to 4.0 mol, per 1.0 mol of the amide group produced by the condensation polymerization. preferable.
- the solubility of the resulting paraamide may be insufficient, and if it exceeds 6.0 mol, the amount of chloride dissolved in the solvent is substantially exceeded. There may not be.
- the alkali metal or alkaline earth metal chloride is less than 2% by weight, the solubility of the para- amide may be insufficient.
- Earth metal chlorides may not dissolve in polar organic solvents such as polar amide solvents or polar urea solvents.
- the heat-resistant resin is an aromatic polyimide
- examples of the polar organic solvent for dissolving the aromatic polyimide include dimethyl sulfoxide, cresol, and 0— Black mouth phenol and the like can be suitably used.
- a pressure disperser As a method for obtaining a slurry-like coating liquid by dispersing a filler, a pressure disperser (goline homogenizer, nanomizer 1) or the like may be used as the apparatus.
- methods for applying the slurry coating liquid include coating methods such as knives, blades, bars, gravure, and dies, and coating of bars, knives, etc. is simple, but industrially, Die coating having a structure in which the solution does not come into contact with outside air is preferable.
- the method according to the adhesive by a method such as by heat sealing, is good idea to immobilized les, 0
- non-aqueous electrolyte secondary battery having the separator of the present invention will be described using a lithium ion secondary battery as an example of the battery.
- a well-known technique may be used for manufacturing the lithium ion secondary battery. That is, for example, a positive electrode sheet in which a positive electrode mixture is applied to a positive electrode current collector, a negative electrode sheet in which a negative electrode electrode mixture is applied to a negative electrode current collector, and the separator of the present invention are stacked. After the electrode group obtained by turning is housed in a container such as a battery can, it can be produced by impregnating an electrolyte solution in which the electrolyte is dissolved in an organic solvent.
- the heat-resistant layer in the separator of the present invention may be in contact with either the positive electrode sheet or the negative electrode sheet.
- the two heat-resistant layer may be in contact with each of the positive electrode sheet and negative electrode sheet.
- the shape of the electrode group include a shape in which a cross section when the electrode group is cut in a direction perpendicular to the winding axis is a circle, an ellipse, a rectangle, a rectangle with a rounded corner, or the like. Can be mentioned.
- the shape of the battery include a paper shape, a coin shape, a cylindrical shape, and a square shape.
- the positive electrode sheet a material obtained by applying a positive electrode mixture containing a positive electrode active material, a conductive agent and a binder to a positive electrode current collector is usually used.
- the electrode mixture for the positive electrode a material including a material capable of doping / detaching lithium ions as the positive electrode active material, a carbonaceous material as the conductive agent, and a thermoplastic resin as the binder is preferable.
- the positive electrode active material includes at least one transition metal element selected from V, Mn, Fe, Co, Ni, Cr and Ti, Li, Na, etc. Al force metal composite oxide force containing a Li metal element?
- the -N a F e 0 2 type structure include composite oxide as a matrix, in that the average discharge potential is high, More preferable examples include composite oxides in which a part of nickel in lithium cobaltate, lithium nickelate, and lithium nickelate is replaced with other elements such as Mn and C0. In addition, composite oxides based on a spinel structure such as lithium manganese spinel can also be mentioned.
- binder examples include thermoplastic resins. Specifically, polyvinylidene fluoride, vinylidene fluoride copolymer, polytetrafluoroethylene, tetrafluoroethylene monohexahexan. Copolymer of fluoropropylene, copolymer of tetrafluoroethylene monofluoroalkyl vinyl ether, copolymer of ethylene-tetrafluoroethylene, vinylidenefluoro dohexafluoropropylene monotetrafluoroethylene copolymer , Thermoplastic polyimide, strong methylcellulose, polyethylene, polypropylene, etc.
- thermoplastic resins Specifically, polyvinylidene fluoride, vinylidene fluoride copolymer, polytetrafluoroethylene, tetrafluoroethylene monohexahexan. Copolymer of fluoropropylene, copolymer of tetrafluoroethylene monofluoroalkyl
- Examples of the conductive agent include a carbonaceous material, specifically, natural graphite, artificial graphite, cox, carbon black, and the like. A mixture of two or more of these may be used. Also good.
- As the positive electrode current collector, and the like can be illustrated. A and stainless steel, light-weight, inexpensive, A 1 month? Preferable from the viewpoint of ease of processing.
- a method for applying the positive electrode mixture to the positive electrode current collector a method by pressure molding, pasting the positive electrode mixture using a solvent, etc., applying the mixture onto the positive electrode collector, and drying Examples of the method include pressing and pressure bonding.
- a negative electrode mixture containing a material capable of doping and dedoping lithium ions is applied to a current collector, lithium metal, lithium alloy, or the like can be used.
- materials capable of doping and dedoping ions include natural graphite, artificial graphite, coke, Chikichi Bon Black, thermally decomposed carbons, carbon fibers, and fired organic polymer compounds.
- Carbonaceous materials such as oxides, sulfides, and other chalcogen compounds that can be doped and dedoped with lithium ions at a potential lower than the positive electrode can also be used.
- a carbonaceous material having a main component of graphite such as natural graphite or artificial graphite is preferable because of high potential flatness and low average discharge potential.
- the shape of the carbonaceous material may be any of a flake shape such as natural graphite, a spherical shape such as mesocarbon microbeads, a fibrous shape such as graphitized carbon fiber, or an aggregate of fine powder.
- the electrolyte solution does not contain ethylene carbonate, which will be described later, it is preferable to use a negative electrode mixture containing polyethylene carbonate because the cycle characteristics and large current discharge characteristics of the resulting battery may be improved.
- the above electrode mixture for negative electrode may contain a binder, if necessary.
- the binder include thermoplastic bioresin, and specifically, polyvinylidene fluoride, a copolymer of polyvinylidene fluoride, vinylidene fluoride dohexafluoropropylene monoterola.
- fluoroethylene copolymers include fluoroethylene copolymers, thermoplastic polyimides, carboxymethyl cellulose, polyethylene, and polypropylene.
- the chalcogen compounds such as oxides and sulfides that can be used as a material capable of doping and dedoping lithium ions contained in the electrode mixture for the negative electrode are listed in the periodic table.
- Power of crystalline or amorphous oxides, sulfides, etc. mainly composed of group 14 and 15 elements, lucogen compound strengths, specifically, amorphous compounds mainly composed of tin oxides, etc. Can be mentioned.
- a carbonaceous material as a conductive agent and a thermoplastic resin as a binder can be added as necessary.
- Examples of the negative electrode current collector used for the negative electrode sheet include Cu, Ni, and stainless steel.
- Cu is a strong magnet because it is difficult to form an alloy with lithium and it can be easily processed into a thin film.
- the method of applying the electrode mixture for the negative electrode to the negative electrode current collector is the same as that for the positive electrode.
- the method is a method of pressure molding, pasted using a solvent, etc., coated on the current collector, dried and then pressed. include methods such forces crimped s.
- an electrolytic solution in which a lithium salt is dissolved in an organic solvent can be used.
- the lithium salt L i C 10 4, L i PF 6, L i A s F 6, L i S b F 6, LIBF 4, L i CF 3 S 0 3, L i N (S 0 2 CF 3 ) L i C (S0 2 CF 3 ) 3 , L i 2 B 1 () C 1 i.
- a lower aliphatic carboxylic acid lithium salt, LiAlC, and the like, and a mixture of two or more of these may be used.
- lithium salt among these, fluorine containing Li Li PF 6 , Li As F 6 , Li S b F 6 , Li B BF Li CF 3 S 0 3 , Li N (S 0 2 CF 3 ) It is preferable to use a material containing at least one selected from the group consisting of 2 and Li C (S0 2 CF 3 ) 3 .
- examples of the organic solvent include propylene carbonate, ethylene carbonate, dimethyl carbonate, jetyl carbonate, ethyl carbonate, 4-trifluoromethyl-1,3-dioxolone-2-one, 1 , 2-Di (methoxycarbonyloxy) ethane and other carbonates; 1,2-Dimethoxyxetane, 1,3-Dimethyoxypropane, Pentafluoropropylmethyl ether, 2, 2, 3, 3-Tetra Ethers such as fluoropropyldifluoromethyl ether, tetrahydrofuran, 2-methyltetrahydrofuran; esters such as methyl formate, methyl acetate, and tertylactolone; nitriles such as acetonitol and butyronitrile; N, N —Dimethylformamide, N, N-dimethyla Ami de such as Toami de; 3-methyl-one 2- Okisa
- a mixed solvent containing carbonates is preferable, and a mixed solvent of cyclic carbonate and acyclic carbonate or cyclic carbonate and ether is more preferable.
- a mixed solvent of cyclic carbonate and acyclic carbonate it has a wide operating temperature range, excellent load characteristics, and is hardly decomposable even when a graphite material such as natural graphite or artificial graphite is used as the negative electrode active material.
- ethylene carbonate ethylene carbonate
- a mixed solvent containing dimethyl carbonate and ethylmethyl carbonate is preferred.
- an electrolytic solution containing a lithium salt containing fluorine such as Li PF 6 and an organic solvent having a fluorine substituent in that a particularly excellent safety improvement effect can be obtained.
- Mixed solvents containing ethers with fluorine substituents, such as pentafluoropropyl methyl ether, 2, 2, 3, 3-tetrafluoropropyl difluoromethyl ether, and dimethyl carbonate have high current discharge characteristics. It is also more preferable.
- a solid electrolyte is used instead of the above electrolyte, a lithium polymer secondary battery is obtained.
- a solid electrolyte for example, a polymer electrolyte such as a polyethylene oxide polymer compound, a polymer compound containing at least one polyorganosiloxane chain or polyoxyalkylene chain can be used. Also, a so-called gel type in which a non-aqueous electrolyte solution is held in a polymer can be used.
- the thickness of the separation evening and the thickness of the shutdown layer were measured according to the JIS standard (K 7130-1 992).
- K 7130-1 992 As the thickness of the heat-resistant layer, a value obtained by subtracting the thickness of the shutdown layer from the thickness of the separator was used.
- the air permeability of the separator was measured with a digital timer type Gurley type densometer manufactured by Yasuda Seiki Seisakusho Co., Ltd. based on J I S P 81 17.
- a sample of the obtained porous film was cut into a square having a side length of 10 cm, and weight W (g) and thickness D (cm) were measured. Obtain the weight (W i) of each layer in the sample, and calculate the volume of each layer from Wi and the true specific gravity (g / cm 3 ) of the material of each layer. The rate (volume%) was determined.
- Carboxymethylcellulose, polytetrafluoroethylene, acetylene black, lithium cobaltate powder as a positive electrode active material and water were dispersed and kneaded to obtain a paste of an electrode mixture for a positive electrode.
- the weight ratio of each component contained in this paste is carboxymethylcellulose: polytetrafluoroethylene: acetylene black: lithium cobaltate powder: water by weight ratio of 0.75: 4.5: 2.7 : 9 2: 45.
- the paste was applied to predetermined portions on both sides of a 20 mA thick foil as a positive electrode current collector, dried, roll-pressed, and slitted to obtain a positive electrode sheet. Positive electrode The length of the A 1 foil in the part where the electrode mixture was not applied was 1.5 cm, and an aluminum lead was resistance-welded to the uncoated part.
- Carboxymethylcellulose, natural graphite, artificial graphite and water were dispersed and mixed to obtain a negative electrode mixture paste.
- the weight ratio of each component contained in this paste was 2.0: 58.8: 39.2: 1: 22.8 by weight ratio of carboxymethylcellulose: natural graphite: artificial graphite: water.
- the paste was applied to predetermined portions on both sides of a 12 mCu-thick foil serving as a negative electrode current collector, followed by drying, roll pressing, and slitting to obtain a negative electrode sheet.
- the length of the Cu foil in the part where the electrode mixture for negative electrode was not applied was 1.5 cm, and the nickel lead was resistance welded to the part where it was not applied o
- the separator, the positive electrode sheet, and the negative electrode sheet (negative electrode electrode mixture uncoated portion 30 cm) are arranged in the order of the positive electrode sheet, the separator, and the negative electrode sheet, and the negative electrode mixture uncoated portion is on the outermost periphery. It laminated
- the above electrode group is inserted into a battery can, and the volume ratio of ethylene carbonate, dimethyl carbonate, and ethylmethyl carbonate as an electrolyte is 1 mol: Li PF 6 in a mixed solution of 16:10:74.
- the lid is sealed through a gasket, and a cylindrical battery of 1 86 50 size (non-aqueous electrolyte secondary battery) )
- the heat-resistant layer in the separator was laminated so as to be in contact with the positive electrode sheet, and the shirt-down layer in the separator was laminated so as to be in contact with the negative electrode sheet.
- the charging conditions are the maximum charging voltage 4.3V, the charging time 3 hours, and the charging current 1 condition.
- the discharging conditions are the minimum discharging voltage 3.0V, discharging current 0.2C, 1C, 2C. It went on condition of. Before each discharge test, charging was performed under the above charging conditions.
- the charging conditions are a maximum charging voltage of 4.3V, a charging time of 3 hours, and a charging current of 1C. The discharge was repeated 200 times.
- Example 1
- a polyethylene porous film (film thickness 12; zm, air permeability 140 sec. 100 cc, average pore diameter 0.1; m, porosity 50%) was used. Thickness 1
- the polyethylene porous membrane is fixed on a PET film of 0 ⁇ m, and the slurry-like coating liquid (B) is applied onto the porous membrane with a bar coater manufactured by Tester Isang Co., Ltd. did.
- the coated porous membrane on the PET film is integrated into a poor solvent, soaked in water to precipitate a paraffin porous membrane (heat-resistant layer), and then the solvent is dried. Separator 1 in which a layer and a shirt down layer were laminated was obtained.
- the thickness of Separator 1 was 16 / m, and the thickness of the paraporous porous membrane (heat-resistant layer) was 4 ⁇ .
- the air permeability of the separator 1 was 1880 seconds Z 1 0 0 cc The porosity was 50%.
- SEM scanning electron microscope
- a separator 2 was obtained in the same manner as in Example 1, except that the para- amide solution (A) in Example 1 was used as the coating solution.
- the thickness of the separator 2 was 16 / m, and the thickness of the paraporous porous membrane (heat-resistant layer) was 4 mm.
- the separator 2 had an air permeability of 1700 seconds / 1100 cc, and a porosity of 50%.
- SEM scanning electron microscope
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Ceramic Engineering (AREA)
- Cell Separators (AREA)
- Secondary Cells (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08721148.8A EP2131418A4 (en) | 2007-02-27 | 2008-02-26 | SEPARATOR |
US12/528,565 US20100099022A1 (en) | 2007-02-27 | 2008-02-26 | Separator |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007-046779 | 2007-02-27 | ||
JP2007046779 | 2007-02-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008105555A1 true WO2008105555A1 (ja) | 2008-09-04 |
Family
ID=39721376
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2008/053728 WO2008105555A1 (ja) | 2007-02-27 | 2008-02-26 | セパレータ |
Country Status (7)
Country | Link |
---|---|
US (1) | US20100099022A1 (ja) |
EP (1) | EP2131418A4 (ja) |
JP (1) | JP5286817B2 (ja) |
KR (1) | KR20090113868A (ja) |
CN (1) | CN101622736A (ja) |
TW (1) | TW200905952A (ja) |
WO (1) | WO2008105555A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102088067A (zh) * | 2009-12-04 | 2011-06-08 | 索尼公司 | 隔膜和电池 |
US20130224560A1 (en) * | 2010-10-29 | 2013-08-29 | Teijin Limited | Separator for nonaqueous electrolyte battery, and non-aqueous electrolyte secondary battery |
Families Citing this family (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4364940B2 (ja) | 2007-06-19 | 2009-11-18 | 帝人株式会社 | 非水系二次電池用セパレータ、その製造方法および非水系二次電池 |
JP5308118B2 (ja) * | 2008-10-30 | 2013-10-09 | 帝人株式会社 | 非水系二次電池用セパレータ、その製造方法、および非水系二次電池 |
JP5511214B2 (ja) * | 2009-04-03 | 2014-06-04 | 旭化成イーマテリアルズ株式会社 | 多層多孔膜 |
JP2011100635A (ja) * | 2009-11-06 | 2011-05-19 | Sumitomo Chemical Co Ltd | 積層フィルムおよび非水電解質二次電池 |
KR101084068B1 (ko) | 2009-11-25 | 2011-11-16 | 삼성에스디아이 주식회사 | 리튬 이차 전지 |
KR101178710B1 (ko) * | 2010-07-13 | 2012-08-30 | 삼성에스디아이 주식회사 | 이차 전지 |
JP5714441B2 (ja) * | 2010-08-06 | 2015-05-07 | 住友化学株式会社 | セパレータ |
JP5664138B2 (ja) * | 2010-11-08 | 2015-02-04 | ソニー株式会社 | 耐収縮性微多孔膜、電池用セパレータ及びリチウムイオン二次電池 |
JP5768359B2 (ja) | 2010-11-17 | 2015-08-26 | ソニー株式会社 | 耐熱性微多孔膜、電池用セパレータ及びリチウムイオン二次電池 |
WO2012077226A1 (ja) * | 2010-12-10 | 2012-06-14 | 日立ビークルエナジー株式会社 | 二次電池 |
US20130171484A1 (en) * | 2011-06-06 | 2013-07-04 | The Board Of Trustees Of The University Of Illinois | Materials and Methods for Autonomous Battery Shutdown |
JP6109467B2 (ja) | 2011-06-28 | 2017-04-05 | 日産自動車株式会社 | 耐熱絶縁層付セパレータ |
JP5939159B2 (ja) | 2012-01-13 | 2016-06-22 | 東レ株式会社 | 芳香族ポリアミド多孔質膜、電池用セパレータおよび電池 |
CN102738427B (zh) * | 2012-07-19 | 2015-01-28 | 河南义腾新能源科技有限公司 | 一种用作锂离子电池隔膜的无机复合微孔膜及其制备方法 |
KR20230112733A (ko) | 2012-09-20 | 2023-07-27 | 셀가드 엘엘씨 | 박형 배터리 분리막 및 방법 |
DE102012023294A1 (de) | 2012-11-28 | 2014-05-28 | Li-Tec Battery Gmbh | Separator für eine Lithium-lonen-Batterie sowie Lithium-lonen-Batterie enthaltend den Separator |
US9627722B1 (en) | 2013-09-16 | 2017-04-18 | American Lithium Energy Corporation | Positive temperature coefficient film, positive temperature coefficient electrode, positive temperature coefficient separator, and battery comprising the same |
EP3224895B1 (en) | 2014-11-25 | 2020-04-08 | American Lithium Energy Corporation | Rechargable battery with internal current limiter and interrupter |
US10020545B2 (en) | 2014-11-25 | 2018-07-10 | American Lithium Energy Corporation | Rechargeable battery with resistive layer for enhanced safety |
US10396341B2 (en) | 2014-11-25 | 2019-08-27 | American Lithium Energy Corporation | Rechargeable battery with internal current limiter and interrupter |
US10020487B2 (en) | 2014-11-25 | 2018-07-10 | American Lithium Energy Corporation | Rechargeable battery with voltage activated current interrupter |
JP2015181110A (ja) * | 2015-04-20 | 2015-10-15 | ソニー株式会社 | 耐熱性微多孔膜、リチウムイオン二次電池用セパレータ及びリチウムイオン二次電池 |
US11777175B2 (en) * | 2015-07-02 | 2023-10-03 | Teijin Limited | Separator for non-aqueous secondary battery, non-aqueous secondary battery, and method of manufacturing non-aqueous secondary battery |
JP6014743B1 (ja) | 2015-11-30 | 2016-10-25 | 住友化学株式会社 | 非水電解液二次電池用セパレータおよびその利用 |
JP6012839B1 (ja) * | 2015-11-30 | 2016-10-25 | 住友化学株式会社 | 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積層セパレータ、非水電解液二次電池用部材、非水電解液二次電池、および多孔質フィルムの製造方法 |
JP6288216B2 (ja) | 2016-02-09 | 2018-03-07 | 宇部興産株式会社 | ポリオレフィン微多孔膜、蓄電デバイス用セパレータフィルム、及び蓄電デバイス |
CN110574198B (zh) | 2017-05-01 | 2023-09-12 | 美国锂能源公司 | 负热膨胀电流断续器 |
WO2019023683A1 (en) | 2017-07-28 | 2019-01-31 | American Lithium Energy Corporation | ANTI-CORROSION COATING FOR BATTERY CURRENT COLLECTOR |
EP3690984A4 (en) | 2017-09-26 | 2021-06-23 | Toray Industries, Inc. | POROUS FILM, SEPARATOR FOR SECONDARY BATTERIES AND SECONDARY BATTERY |
CN109698301A (zh) * | 2017-10-24 | 2019-04-30 | 住友化学株式会社 | 非水电解液二次电池用多孔层 |
EP3719868A4 (en) | 2017-11-28 | 2021-12-15 | Toray Industries, Inc. | POROUS FOIL, SEPARATOR FOR SECONDARY BATTERY AND SECONDARY BATTERY |
JP7218104B2 (ja) * | 2018-06-15 | 2023-02-06 | 住友化学株式会社 | 多孔質層および非水電解液二次電池用積層セパレータ |
CN111146395A (zh) * | 2018-11-06 | 2020-05-12 | 微宏动力系统(湖州)有限公司 | 一种电池隔膜、其制备方法及电池 |
EP3919269B1 (en) * | 2019-06-04 | 2023-07-12 | Teijin Limited | Separator for non-aqueous secondary battery, and non-aqueous secondary battery |
JP7231684B2 (ja) * | 2020-09-03 | 2023-03-01 | 住友化学株式会社 | 非水電解液二次電池用多孔質層 |
CN112531288B (zh) * | 2020-12-07 | 2022-11-08 | 安徽南都华拓新能源科技有限公司 | 阻燃型纳米纤维锂电池隔膜及其制备方法 |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06191833A (ja) | 1992-06-02 | 1994-07-12 | Sumitomo Chem Co Ltd | α−アルミナ |
JPH06191836A (ja) | 1992-06-02 | 1994-07-12 | Sumitomo Chem Co Ltd | α−アルミナ |
JPH0729563A (ja) | 1993-05-11 | 1995-01-31 | Mitsubishi Chem Corp | バッテリーセパレーター及びそれを用いたリチウム電池 |
JPH07206430A (ja) | 1993-04-13 | 1995-08-08 | Sumitomo Chem Co Ltd | α−アルミナ粉末およびその製造方法 |
JPH07304110A (ja) | 1994-05-12 | 1995-11-21 | Ube Ind Ltd | 積層多孔質フイルム及びその製法 |
JP2001023602A (ja) | 1999-07-13 | 2001-01-26 | Sumitomo Chem Co Ltd | 非水電解液二次電池用セパレータの製造方法および非水電解液二次電池 |
JP2001316006A (ja) | 2000-05-12 | 2001-11-13 | Sumitomo Chem Co Ltd | 基材搬送装置および基材塗工体の製造方法 |
JP2005285385A (ja) | 2004-03-29 | 2005-10-13 | Sanyo Electric Co Ltd | セパレータ及びこのセパレータを用いた非水電解質電池 |
JP2006032246A (ja) | 2004-07-21 | 2006-02-02 | Sanyo Electric Co Ltd | 非水電解質電池用セパレータ及び非水電解質電池 |
JP2006059733A (ja) * | 2004-08-23 | 2006-03-02 | Tomoegawa Paper Co Ltd | 電子部品用セパレータ及びその製造方法 |
JP2006307193A (ja) * | 2005-03-30 | 2006-11-09 | Sumitomo Chemical Co Ltd | 多孔性フィルムおよび多孔性フィルムの製造方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW460505B (en) * | 1998-04-27 | 2001-10-21 | Sumitomo Chemical Co | Separator for nonaqueous electrolyte battery and lithium secondary battery made from the same |
US20080070107A1 (en) * | 2004-12-07 | 2008-03-20 | Shinji Kasamatsu | Separator and Non-Aqueous Electrolyte Secondary Battery Using Same |
-
2008
- 2008-02-20 JP JP2008038498A patent/JP5286817B2/ja active Active
- 2008-02-26 WO PCT/JP2008/053728 patent/WO2008105555A1/ja active Application Filing
- 2008-02-26 CN CN200880006155A patent/CN101622736A/zh active Pending
- 2008-02-26 KR KR1020097017607A patent/KR20090113868A/ko not_active Application Discontinuation
- 2008-02-26 EP EP08721148.8A patent/EP2131418A4/en not_active Withdrawn
- 2008-02-26 US US12/528,565 patent/US20100099022A1/en not_active Abandoned
- 2008-02-27 TW TW097106854A patent/TW200905952A/zh unknown
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06191833A (ja) | 1992-06-02 | 1994-07-12 | Sumitomo Chem Co Ltd | α−アルミナ |
JPH06191836A (ja) | 1992-06-02 | 1994-07-12 | Sumitomo Chem Co Ltd | α−アルミナ |
JPH07206430A (ja) | 1993-04-13 | 1995-08-08 | Sumitomo Chem Co Ltd | α−アルミナ粉末およびその製造方法 |
JPH0729563A (ja) | 1993-05-11 | 1995-01-31 | Mitsubishi Chem Corp | バッテリーセパレーター及びそれを用いたリチウム電池 |
JPH07304110A (ja) | 1994-05-12 | 1995-11-21 | Ube Ind Ltd | 積層多孔質フイルム及びその製法 |
JP2001023602A (ja) | 1999-07-13 | 2001-01-26 | Sumitomo Chem Co Ltd | 非水電解液二次電池用セパレータの製造方法および非水電解液二次電池 |
JP2001316006A (ja) | 2000-05-12 | 2001-11-13 | Sumitomo Chem Co Ltd | 基材搬送装置および基材塗工体の製造方法 |
JP2005285385A (ja) | 2004-03-29 | 2005-10-13 | Sanyo Electric Co Ltd | セパレータ及びこのセパレータを用いた非水電解質電池 |
JP2006032246A (ja) | 2004-07-21 | 2006-02-02 | Sanyo Electric Co Ltd | 非水電解質電池用セパレータ及び非水電解質電池 |
JP2006059733A (ja) * | 2004-08-23 | 2006-03-02 | Tomoegawa Paper Co Ltd | 電子部品用セパレータ及びその製造方法 |
JP2006307193A (ja) * | 2005-03-30 | 2006-11-09 | Sumitomo Chemical Co Ltd | 多孔性フィルムおよび多孔性フィルムの製造方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2131418A4 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102088067A (zh) * | 2009-12-04 | 2011-06-08 | 索尼公司 | 隔膜和电池 |
US20110293976A1 (en) * | 2009-12-04 | 2011-12-01 | Sony Corporation | Separator and battery |
CN105355825A (zh) * | 2009-12-04 | 2016-02-24 | 索尼公司 | 隔膜和电池 |
US10312491B2 (en) * | 2009-12-04 | 2019-06-04 | Murata Manufacturing Co., Ltd. | Separator and battery |
US20130224560A1 (en) * | 2010-10-29 | 2013-08-29 | Teijin Limited | Separator for nonaqueous electrolyte battery, and non-aqueous electrolyte secondary battery |
US9570725B2 (en) * | 2010-10-29 | 2017-02-14 | Teijin Limited | Separator for nonaqueous electrolyte battery, and non-aqueous electrolyte secondary battery |
Also Published As
Publication number | Publication date |
---|---|
EP2131418A1 (en) | 2009-12-09 |
JP5286817B2 (ja) | 2013-09-11 |
US20100099022A1 (en) | 2010-04-22 |
KR20090113868A (ko) | 2009-11-02 |
TW200905952A (en) | 2009-02-01 |
EP2131418A4 (en) | 2013-05-29 |
JP2008243805A (ja) | 2008-10-09 |
CN101622736A (zh) | 2010-01-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5286817B2 (ja) | セパレータ | |
JP5286844B2 (ja) | セパレータ | |
JP5521266B2 (ja) | 正極活物質用粉末および正極活物質 | |
JP5158027B2 (ja) | ナトリウム二次電池 | |
JP5493301B2 (ja) | ナトリウム二次電池 | |
JP5293020B2 (ja) | 非水電解質二次電池用電極合剤、電極および非水電解質二次電池 | |
US20110159345A1 (en) | Electrode active material and method for producing same | |
JP5531602B2 (ja) | 電極活物質、電極および非水電解質二次電池 | |
JP2008266593A (ja) | 多孔質フィルム | |
KR20100120138A (ko) | 복합 금속 산화물 및 나트륨 이차 전지 | |
KR20110073488A (ko) | 전극 활성 물질, 전극 및 비수전해질 이차 전지 | |
JP2010113804A (ja) | 非水電解液二次電池 | |
JP5309581B2 (ja) | 正極活物質用粉末、正極活物質およびナトリウム二次電池 | |
JP2009129702A (ja) | ナトリウム・マンガン複合金属酸化物およびその製造方法、ならびにナトリウム二次電池 | |
JP2009199825A (ja) | 電極群を有するデバイス | |
KR20100112604A (ko) | 나트륨 이차 전지 | |
CN110600658A (zh) | 非水系二次电池用隔膜及非水系二次电池 | |
CN113678313B (zh) | 非水系二次电池用隔膜及其制造方法以及非水系二次电池 | |
JP2010040311A (ja) | 電極活物質、電極およびナトリウム二次電池 | |
JP2011181367A (ja) | 非水電解質二次電池 | |
JP2009211947A (ja) | 電池セパレータ用多孔質フィルム及び該フィルムを備える電池 | |
JP2011216472A (ja) | 正極用粉末 | |
JP2009259601A (ja) | ナトリウムイオン二次電池用電極活物質およびその製造方法 | |
EP4160806A1 (en) | Separator for nonaqueous secondary batteries, and nonaqueous secondary battery | |
JP2009211943A (ja) | 電池セパレータ用多孔質フィルム及び該フィルムを備える電池 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200880006155.9 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 08721148 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020097017607 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12528565 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2008721148 Country of ref document: EP |