METHOD FOR MANUFACTURING SEPARATOR, THE SEPARATOR, AND BATTERY USING THE SEPARATOR

Hereinafter, . as further described relative to the present invention. The present specification is not described of the present invention the contents is a classic mirror server, in particular in the fields of art or similar sufficiently recognize and deducing the graphitic surface can be., which does not require a an annealing process is the explanation.

Device in manufacturing process of the present invention refers to isolation, two patterns of the first height and the tensile strength and to adjust the CDMA timing to drawing process shrinkage melt is the reduce a pattern for forming a separation. separation membrane exhibiting and method.

Specifically of the present invention according to one example, a, stretching and a cross stretch is employed as a follower one isolation, said cross stretched transversally, removing the stress, in isolation to shrinking provides two patterns of the first polyolefin including manufacturing method.

Separator for battery used in polyolefin base film are fine the films a porous substrate film may be used in, said fine pores in such a way according to application; and producing polyolefin artworking method wet preferably the electroless method is classification in dry.

Specifically, a polyolefin dry after which the sheet determination of polyolefin by stretching at low temperature which is the portion lamellar set to a crack test between the groups, and inducing causing the formation of micropores or, polyolefin resin inorganic particles also after a film mixing a polyolefin resin by stretching at low temperature of the interface between and inorganic particles to obtain a desired a causing the formation of micropores the heat a method. of the mobile communication network. Polyolefin resins wet method of the substrate in which a molten composition [...] perhaps and polyolefin resin (of a polyolefin and a similar molecular structures having low molecular weight organic material, such as paraffin for instance) which comprises kneading together a single phase of a polyolefin and a in the cooling process creates perhaps [...][...] perhaps semiconductor elements on extracts. of the mobile communication network method forming a void in its interior.

The present invention used in polyolefin base film by heat hardening method fine pores forming a limited to, extracts of Barks of the confirmation, if the art method using used to monitor the conform to but, preferably conform to wet method. Dry along the axis relative to the wet method nitride compared to the a thin uniform part and produced by uniformly controlling of fog of mechanical strength can be better porous separation membrane can be produced.

According to one example of the present invention in producing a spandex yarn isolation said when by wet method, perhaps the drawing process value of base film, polyolefin said [...] extraction may be performed in a before or after, perhaps more preferably can be carried out before the extraction [...]. Perhaps [...] extraction before the case of drawing process, by perhaps [...] stretch by softening of a polyolefin work unit stability produced according spaced apart from each other on the a message which wood pulp, reed pulp, corn, due in elongation in addition the result of the sheet, stretched sheet extraction process after perhaps [...] more easily removed from the contact point is turned off.

While, pattern for forming a separation method a base film stretch method by classification by uniaxial stretch method and tool can be biaxially stretched, said roter again 3440 biaxially stretched artworking method biaxially stretched by simultaneous biaxially stretched can be classification. Specifically, value of base film, elongation of email widow, a web page or substrate film longitudinal direction (Machine Direction, MD) and/or cross direction (Transverse Direction, TD) stretched to, said smaller longitudinal direction the orientation a certain stretched uniaxially method for only and, referred to as method, both directions in both said longitudinal direction and a cross direction stretch of the biaxially stretched in this method performing sees the same method.

Furthermore, said biaxially stretched during method, substrate film longitudinal direction and a cross direction method for simultaneously for simultaneous biaxially stretched first film the base material, referred to as method (smaller direction) stretching longitudinal direction, then cross direction (or species direction) method is periodically biaxially stretched for stretched in sees the same method.

According to said one example of the present invention two patterns of the first biaxially stretched preferably, the manufacturing method may be performed in a method, more preferably roter biaxially stretched be by. Roter biaxially stretched when according pick, base film the longitudinal direction of the flow-and a cross direction stretch magnification a control time a more convenient contact point is turned off. Furthermore, sheet device toothing between gripping region and the non-recessed areas of a grip by draw-down ratio than the a final stretched product quality of device toothing sheet be ensuring uniformity of the separation of a fixed seat from stability by preventing the developing layer is formed on the first conductive contact point is turned off.

Hereinafter, also 1 reference to two patterns of the first manufacturing method according to one example of the present invention relative to. specifically,. Figure 1 shows a manufacturing method according to one example of the present invention also a process according to two patterns of the first outlines is a mimetic shown.

Also with a 1, according to one example method of the present invention pattern for forming a separation [...] and single composition for base film is first extrusion fed into the extrusion process; said gel as a matter of obtained after extrusion is cast process film manufacturing sheet; said sheet after film (isolation) (MD) MD drawing process for stretched in a longitudinal direction; said species-direction orientation (TD) by the lateral sheet after 1 in difference TD drawing process 1 for difference; said 1 perhaps from sheet stretched cross difference extracting [...] communicates with an extractor and dried and a drying step; said drying sheeting stretched difference 2 in a lateral direction while performing ten fixations 2 difference TD elongation and render the process; and ten fixations rough sheet includes winding process for winding.

Said base film used in extrusion process said composition for use an include polyolefin resin composition. Said polyolefin resin composition consisting of only a or at least one polyolefin resin 1,1 one or more polyols pin orgin resin, used instead the memory device stores a resin and/or inorganic materials can be mixed composition including..

Said polyolefin resin example, but not limited to, polyethylene (PE), polypropylene or poly-4-methyl-1-pentene as to the aromatic hydrocarbon. They are 2 be used alone or in at least one can be used is mixed with a. I.e., said polyolefin resin are employed either alone or in, in addition to mixtures or copolymers thereof, , use can be made of,. Said used instead the memory device stores a resin for example, but not limited to polyamide, polybutylene terephthalate (PBT), polyethylene terephthalate (PET), poly claw lot ripple base Oro ethylene (PCTFE), polyoxymethylene (POM), poly [...] (PVF), polyvinylidene fluoride-(PVdF), polycarbonate, polyarylate, polysulfone, polyether-imide as to the aromatic hydrocarbon. They are 2 be used alone or in at least one can be is used mixed. Specifically, molecular weight of 100,000 g/mol to 1,000,000 g/mol in density polyethylene and molecular weight of 1,000,000 g/mol or more mixing ultrahigh molecular weight polyethylene therefore, in this case the high density polyethylene polyolefin resin to enhance smoothness and convergence of the 50 to 90 parts by weight can be included, 50 to 10 the of ultra-high molecular weight polyethylene can be parts by weight of.

Of inorganic plastic said example, but not limited to, alumina, calcium carbonate, silica, barium sulfate or talc as to the aromatic hydrocarbon 2 be used alone or in the at least one can be used by mixing. Manufacturing isolation layer along wet method of the present invention in establishing an optical fiber at a side when the polyolefin resin and single [...] polyolefin sheet form by extruding together capable of forming a film but, perhaps when the along dry [...] may be without introducing.

Limited to, extracts of Barks of the kind [...] perhaps said aluminum through extrusion can be realized at a temperature said polyolefin resin (or polyol polyolefin resin and other types of resin mixture of) a single on for certain organic compound can be. Perhaps said [...] (nonan) nonan for example, but not limited to, decane (decane), azadecalin (decalin), liquid paraffin (Liquid paraffin, LP) (or paraffin oil) flow such as paraffin, paraffin wax such as aliphatic or cyclic hydrocarbon ; (dibutyl phthalate) dibutyl phthalate, phthalic acid esters such as (dioctyl phthalate) phthalate [...] ; (palmitic acid) palmitic, stearic acid (stearic acid), (oleic acid) oleic, linoleic acid (linoleic acid), 10 to 20 carbons such as (linolenic acid) linolenic acid of fatty acids can; palmitic alcohol, stearic acid alcohol, oleic of 10 to 20 carbons such as alcohol can: such as fatty alcohol. They are 2 be used alone or in at least one can be is used mixed. Preferably during [...] perhaps said, use can be made of, paraffin flow. Liquid paraffin the human body having a high boiling point the reactions highly volatile low wet in the process, and perhaps [...] the tamper-proof device adapted to be.

Perhaps said extracts the [...] a drying process in particular, longitudinal direction elongation and 1 difference cross direction stretched with an organic solvent, perhaps is immersed for air knife which is then subjected to reverse phase [...] judged to be dried is dried through (air knife) can be carried through in such a way that. Said organic solvent methylene chloride, 1, 1, 1-trichloro ethane, fluoro principally comprising aluminum of a halogen, such hydrocarbon current, n-hexanediol, hydrocarbons such as cyclohexane, ethanol, alcohols such as isopropanol, acetone, 2-butane on such as ketones can be limited to blood not. Perhaps [...] flow paraffin the desired program preferably methylene chloride, use can be made of, with an organic solvent.

Of the present invention according to one example, a, 1 2 said cross stretching elongation and cross difference may include a stretch cross difference.

Said 2 difference cross stretch operating isolation layer in a lateral direction for stretch factor is determined, isolation stretched cross difference 1 width of a lateral direction of preferably when L, referred to as isolation a lateral direction of said width and can be manufactured stretched in a be greater than or equal to 1.1 L, more preferably 1.1 L to 1.8 L, more preferably 1.1 L to 1.5 L can extend from about is.

Furthermore, said 2 difference cross stretch operating said isolation after stretched larger than a cross area and said cross again shrinking factor is determined, 1 isolation stretched cross difference L, referred to as width of a lateral direction of preferably when 0.9 L width a lateral direction of said isolation of shrinking to less than 1.3 L or more the, more preferably 0.9 L to 1.2 L of shrinking to.. Said isolation within the range each other by the under cut a tensile strength in, in addition of the semiconductor device by lowering the shrinkage melt two patterns of the first two patterns of the first second control signal according to the control., may be enhanced heat resistance. Said 2 difference cross stretch in performing smaller/elongation and cross said shrinkage tensile strength of a desired isolation, melt shrinkage according to suitable number of 1 or more times can be is repeatedly carried out with.

Said 2 stretch cross difference temperature conditions in performing a suitably various temperatures can be adjusted to be in the range from, performed injection sample using temperature conditions in isolation property can be varied from.. Said 2 difference cross elongation and/or render the 140 °C to 110 °C temperature preferably when performing can be.

The of the present invention according to one example, a separation membranes prepared in longitudinal direction is arranged of tensile strength direction and a cross tensile strength of each preferably 2,000 kgf/cm² at least. Furthermore, another according to one example, a of the present invention, said longitudinal direction tensile strength (x) transverse to the direction of tensile strength (y) that preferably 0.7 to Wednesday 1 (y/x).

Isolation the longitudinal direction of the flow-and a cross direction of the tensile strength of when the corresponding to. maintain the stability of the isolation. Specifically, isolation laterally tensile strength of the longitudinal direction of the flow-direction of the tensile strength of a larger difference between its two patterns of the first when the thermal contraction and/or shrinkage melt then it is possible to increase the strength pricking two patterns of the first which can be lowered in addition heat resistance as well as the isolation that attenuates physical strength. problem. Therefore, the present invention refers to drawing process cross difference during manufacturing isolation layer 2 separation membranes prepared by adjusting the longitudinal direction and a cross direction is similar example, abnormal prion protein is extracted tensile strength having improved stability. separation membrane exhibiting.

Said isolation method for measuring the tensile strength of the confirmation, if the limited to, extracts of Barks of, a commonly used in various technical fields of the present invention, use can be made of, method. For measuring the tensile strength of said isolation method, but not limited to, an include: separation membranes prepared the gate (MD) 10 mm × longitudinal (TD) 50 mm rectangular-formed at the point of two different 10 10 a to tailor region and a and then two, each said UTM specimen (tension tester) to 20 mm length to a DC through the converter so that said specimen after physical MD average direction TD direction and pulled for measuring the tensile strength can be carried through in such a way that.

Of the present invention according to one example, a TMA (Thermomechanical Analysis) according to an electrochemical method for of a dump truck shrinkage melt the longitudinal direction of the flow-isolation (a) transverse to the direction (b) shrinkage melt (b/a) non that preferably can be 1.2 hereinafter. Furthermore, another according to one example, a of the present invention, said film and which has undergone a shrinkage of molten longitudinal direction preferably which may be 10% to 35%, more preferably 15% to 30% and the shaft transfers the, more preferably 20% to 30% can be. Furthermore, another of the present invention said according to one example, a film and which has undergone a shrinkage of molten cross direction preferably which may be 5% to 30%, more preferably 10% to 25% and the shaft transfers the, more preferably can be 15% to 25%. Said separation membranes having excellent heat resistance within the range which the film is to be formed, using the same battery according to cell use when opens and closes the cell isolation layer is formed until a significant temperature even is not melted and tolerant of the electrode are formed oppositely on the battery explosion of the body, and the cover and L is an integer of 1.

Said two patterns of the first method for measuring shrinkage melt limited to, extracts of Barks of the confirmation, if the, a commonly used in various technical fields of the present invention, use can be made of, method. For measuring shrinkage melt said two patterns of the first method, but not limited to, an include: separation membranes prepared the gate (MD) 10 mm × longitudinal (TD) 80 mm rectangular-formed at the point of two different 10 10 a to tailor region and a and then two, each said TMA specimen 0.005 N which a load (Load) under room temperature (about 20 °C and out) from about 200 °C 10 °C while at elevated temperatures a programming rate of/min. until each specimen for measuring the change in length of a to contraction of the member at the initial molten contrast length for measuring the length of a calculates a mean value at the first step, a can be carried through in such a way that.

Another according to one example, a of the present invention, polyolefin isolation and anode, cathode filled with electrolyte includes provides electrochemical cell. The aforementioned of the present invention said manufacturing method said polyolefin isolation separation membranes prepared according to the aforementioned or can be isolation of the present invention.

Another according to one example, a of the present invention, anode, cathode, and including electrolytes interacts with the separation membrane and, said shrinkage melt the longitudinal direction of the flow-isolation TMA according to of a dump truck (a) transverse to the direction (b) shrinkage melt non (b/a) is polyolefinic is 1.2 hereinafter provides electrochemical cell isolation layer is formed.

Limited to, extracts of Barks of the kind of electrochemical cell said confirmation, if the, kinds of known in various technical fields of the invention herein can be cell.

Herein of the invention said electrochemical cell preferably lithium metal secondary battery, lithium ion secondary battery, lithium polymer secondary battery or li-ion polymer secondary battery such as a lithium secondary cell can be.

A method for making an electrochemical cell of the invention herein the limited to, extracts of Barks of confirmation, if the, herein a commonly used in various technical fields of the invention, use can be made of, method.

Said a method for making an electrochemical cell but not limited to, an expanded include: herein of the invention said organic and inorganic composite coating layer isolation layer polyolefin including, between an anode and a cathode and of then, electrolyte is that fills manner cell can be produced.

Herein electrodes constituting an electrode substrate electrochemical cell of the invention, herein a commonly used in various technical fields of the invention method by electrode current electrode active material in the form attached an aquapotin can be produced.

Said invention herein during electrode active material used in confirmation, if the limited to, extracts of Barks of the positive electrode active material contains, of the invention herein an anode which uses typically in various technical fields, use can be made of, active material.

Of positive electrode active material for example, but not limited to, said, lithium manganese oxide, lithium cobalt oxide, lithium nickel oxide, lithium iron oxide or a combination of these lithium composite oxides as to the aromatic hydrocarbon.

Said invention herein during electrode active material used in confirmation, if the limited to, extracts of Barks of carbon, commonly used in various technical fields of the invention herein is a negative electrode active material which, use can be made of,.

For example, but not limited to said anode active material, lithium metal or lithium alloy, carbon, petroleum cock (petroleum coke), activated carbon (activated carbon), graphite (graphite) lithium such as carbon or other as to the aromatic hydrocarbon adsorbing material.

Invention herein used in limited to, extracts of Barks of the electrode current said confirmation, if the, commonly used in various technical fields of the invention herein a electrode current, use can be made of, current collector.

Said electrode current collector at anode current collector for example, but not limited to a material, aluminum, nickel or a combination thereof of foils produced by as to the aromatic hydrocarbon.

Cathode current collector at said electrode current collector for example, but not limited to a material, copper, gold, nickel, copper alloy or their are prepared by combining a of foils as to the aromatic hydrocarbon.

Limited to, extracts of Barks of solvent is an organic solvent such as used in the present invention, if the, commonly used in various technical fields of the invention herein an electrochemical the electrolytic solution, use can be made of,.

Said solvent is an organic solvent such as A⁺ B^- a salt of structure such as, organic solvent dissolved or dissociated it is possible,.

Said A⁺ example, but not limited to, , Li⁺, Na⁺ or K⁺ and a an alkali such as metal cations, or combination of them: cationic.

Said B^- example, but not limited to, , PF₆^-, BF₄^-, Cl^-, Br^-, I^-, ClO₄^-, AsF₆^-, CH₃ CO₂^-, CF₃ SO₃^-, N (CF₃ SO₂)₂^- or C (CF₂ SO₂)₃^- ions, or combination of them: an anionic.

Said organic solvent for example, but not limited to, propylene carbonate (Propylene carbonate; PC), ethylene carbonate (EC), [...] (Diethyl carbonate; DEC), dimethyl carbonate (DMC), deep [...] DPC), Dimethylsulphoxide, acetonitrile (Acetonitrile), [...], [...], tetrahydrofuran (Tetrahydrofuran), N-methyl-2-pyrrolidone (NMP), ethyl [...] Taxine or gamma (EMC) (Butyrolactone-γ) as to the aromatic hydrocarbon. They are 2 be used alone or in at least one can be used by mixing.

Hereinafter, in the embodiment, compared e.g. and e.g. through the described S406 the present invention. Just, these in the embodiment, the present invention is exemplified and e.g. compared OS and which purpose: to avoid a, thus of the present invention range limited to not.

In the embodiment 1

Weight average molecular weight of 600,000 g/mol in density polyethylene (High-density polyethylene, HDPE; Mitsui chemical yarn product) and 25.5 weight average molecular weight of 2,400,000 g/mol invention provides an ultrahigh-molecular weight polyethylene (Ultra High Molecular Weight Polyethylene, UHMWPE; Mitsui chemical yarn product) 4.5 parts by weight of mixed resin, and liquid paraffin (LP) 70 parts by weight (far eastern emulsion) biaxially extrusion fed into the extrusion section.

After extrusion through a die-T said obtained using cooling rolls gel as a matter of and radiating the light of the predetermined sheet said sheet is stretched in a stretch ratio in the range of 4.5 (MD) species least one selected from the group, cross (TD) stretch magnification is 7 stretch performed for all the cross difference 1.

Said 1 difference cross stretched polyethylene substrate film methylene chloride (ternary fine chemicals), the washed liquid paraffin was very dry extracts the number of complete. Furthermore, said dried film a work stretched to orient at ratio in the range of 1.4 L (L: said 1 difference cross stretched isolation a lateral direction of width) after stretched cross is, cross to be 1.1 L ratio in the range of stretched to orient at 2 contracting cross is stretch performed for all the cross difference. Said 2 a massage cream, an essence, performed in conjunction with a non-stretching cross difference with ten fixations was 127 °C temperature conditions. Said 2 it opens and really it is thick elongation and cross difference (winding) winding film 14 so that its wall thickness is to micro m in polyolefin porous separation membrane manufacturing processes and the cost of production.

In the embodiment 2

In said in the embodiment 1, in drawing process cross difference said 2, dried film a work stretched to orient at ratio in the range of 1.4 L after stretched cross is, 1.2 L ratio in the range of stretched to orient at cross same is said in the embodiment 1 except for the host supplying contracting cross the same method in been produced with at isolation layer.

In the embodiment 3

In said in the embodiment 1, in drawing process cross difference said 2, dried film a work stretched to orient at ratio in the range of 1.2 L after stretched cross is, 1.0 L ratio in the range of stretched to orient at cross same is said in the embodiment 1 except for the host supplying contracting cross the same method in been produced with at isolation layer.

In the embodiment 4

In said in the embodiment 1, in drawing process cross difference said 2, dried film a work stretched to orient at ratio in the range of 1.1 L after stretched cross is, 1.0 L ratio in the range of stretched to orient at cross same is said in the embodiment 1 except for the host supplying contracting cross the same method in been produced with at isolation layer.

In the embodiment 5

In said in the embodiment 1, in drawing process cross difference said 2, dried film a work stretched to orient at ratio in the range of 1.2 L after stretched cross is, 1.1 L ratio in the range of stretched to orient at cross same is said in the embodiment 1 except for the host supplying contracting cross the same method in been produced with at isolation layer.

In the embodiment 6

In said in the embodiment 1, in drawing process cross difference said 2, dried film a work stretched to orient at ratio in the range of 1.1 L after stretched cross is, 0.9 L ratio in the range of stretched to orient at cross same is said in the embodiment 1 except for the host supplying contracting cross the same method in been produced with at isolation layer.

Compared example 1

In said in the embodiment 1, in drawing process cross difference said 2, dried film a work stretched to orient at ratio in the range of 1.1 L and stretch cross is, without performing contraction N. separate except for the host supplying isolation method in the same said in the embodiment 1 have been prepared.

Said in the embodiment 1 to 6 and comparison e.g. isolation composition as the composition of 1 according to, species in the lateral orientation difference 1/stretched condition and process 2 to process conditions render the/stretch cross difference table 1 exhibits the clip to.

Experiment example 1

Measuring venting of isolation

Said in the embodiment 1 to 6 and comparison example 1 each made in two patterns of the first for measuring the air permeability is experimentally is performed for all the, thereby.

Separation membranes prepared implementations allocate fewer said in the embodiment and comparison 1 inch (inch) diameter each of is put won or more different has a dimension sufficient to enable each 10 10 a cutting at the point of two region and a and then two, measuring device ( asahitax nose yarn) extrusion using 100cc air specimen each said passage of water it was determined that time. At said times of or five times calculates a mean value the second light drop unit drops part it was determined that the air permeability.

Experiment example 2

Two patterns of the first pricking strength measurement

Said in the embodiment 1 to 6 and comparison example 1 separation membranes prepared in pricking of the magnetic intensity in the direction in which the is experimentally is performed for all the.

Said in the embodiment and comparison (MD) 50 mm × the gate each separation membranes prepared implementations allocate fewer longitudinal (TD) 50 mm at the point of two different 10 10 a to tailor region and a and then two, GATO G5 deck the metering using robotic equipment, put the a specimen to an on hole 10 cm after 1 mm through while simultaneously holding in into a fiber-optic sensor probe force with which it was determined that. Pricking of a specimen each said three times at each strength calculates a mean value was the second light drop unit drops part.

Experiment example 3

Measuring tensile strength of isolation

Said in the embodiment 1 to 6 and comparison e.g. separation membranes prepared in 1 for measuring the tensile strength of is experimentally is performed for all the, thereby.

Said in the embodiment and comparison (MD) 10 mm × the gate each separation membranes prepared implementations allocate fewer longitudinal (TD) 50 mm rectangular-formed at the point of two different 10 10 a to tailor region and a and then two, each said UTM specimen (tension tester) to 20 mm length to a DC through the converter so that said specimen after physical MD direction and pulled it was determined that tensile strength average direction TD.

Experiment 4 e.g.

Measuring axis rate of heat shrinkage of isolation

Said in the embodiment 1 to 6 and comparison example 1 separation membranes prepared in a heatable of the magnetic measuring is experimentally is performed for all the.

Said in the embodiment and comparison (MD) 50 mm × the gate each separation membranes prepared implementations allocate fewer longitudinal (TD) 50 mm at the point of two different 10 10 one to tailor a test specimen was produced. Each specimen 1 in an oven to a of said 105 °C then the composition is left for time, each of a specimen MD direction and TD of a heatable average a measure of the degree to which the bill.

Experiment example 5

Two patterns of the first measuring shrinkage melt

Said in the embodiment 1 to 6 and comparison e.g. separation membranes prepared in 1 for measuring the shrinkage of molten, thereby is experimentally is performed for all the.

Said in the embodiment and comparison the gate separation membranes prepared implementations allocate fewer (TD) 80 mm longitudinal (MD) 10 mm × 10 two different rectangular-formed at the point of cutting a region and a and then two 10, TMA specimen each said 0.005 N which a load (Load) under 200 °C about from room temperature (about 20 °C and out) until each while at elevated temperatures a programming rate of/min. 10 °C MD of a specimen for measuring the change in the length along the TD direction and the, initial length a length to contraction of the member at the melt contrast calculates a mean value calculates a melted by dimensional shrinkage, it was determined that.

Example experiment 1 to 5 according to said table to present a reference measurement plain on the exhibits to 2.