WO2014051339A1 - 탄성물질을 포함하는 다공성 분리막의 제조방법, 이 방법에 의해 제조된 다공성 분리막 및 이 분리막을 포함하는 이차전지 - Google Patents
탄성물질을 포함하는 다공성 분리막의 제조방법, 이 방법에 의해 제조된 다공성 분리막 및 이 분리막을 포함하는 이차전지 Download PDFInfo
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- WO2014051339A1 WO2014051339A1 PCT/KR2013/008601 KR2013008601W WO2014051339A1 WO 2014051339 A1 WO2014051339 A1 WO 2014051339A1 KR 2013008601 W KR2013008601 W KR 2013008601W WO 2014051339 A1 WO2014051339 A1 WO 2014051339A1
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- porous
- separation membrane
- separator
- elastomer
- elastic material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
- B29C55/06—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
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- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
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- 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
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- H01M50/409—Separators, membranes or diaphragms characterised by the material
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Definitions
- the present invention relates to a method for producing a porous separator, specifically, a method for preparing a porous separator including an elastic material, a porous separator prepared by this method, and a secondary battery including the separator.
- Secondary batteries are chemical batteries that can be used semi-permanently by repeatedly charging and discharging using an electrochemical reaction, and are classified into lead acid batteries, nickel-cadmium batteries, nickel-hydrogen batteries, and lithium secondary batteries.
- the lithium secondary battery is leading the secondary battery market with superior voltage and energy density characteristics compared to other batteries, and lithium ion secondary battery using a liquid electrolyte according to the type of electrolyte, and using a solid electrolyte It is divided into lithium ion polymer secondary battery.
- the lithium secondary battery is composed of a positive electrode, a negative electrode, an electrolyte, and a separator.
- a required characteristic of the separator is to separate the positive electrode and the negative electrode and to electrically insulate the lithium ion based on its high porosity.
- polyolefin-based polymers such as polyethylene (PE), polypropylene (PP), etc., which are advantageous for pore formation and have excellent chemical resistance, mechanical properties, and thermal properties, are mainly used.
- the required characteristics of the separator for a lithium secondary battery include excellent air permeability, low heat shrinkage, high puncture strength, etc., but excellent air permeability is continuously required due to the development of high capacity and high output batteries.
- a wet method is used in which a polyolefin and a pore-forming agent are mixed at high temperature, extruded, and stretched, and then a pore-forming agent is extracted to form a porous membrane for pore formation.
- the dry method without using the solvent is capable of mass production of a wide film, it is preferable to the environmentally wet method because no solvent is required.
- the stretching process has a high probability of occurrence of a short circuit due to the tendency of the film to shrink in its opposite direction.
- the mechanical properties such as tensile strength in the stretching direction or the more stretched direction in the film subjected to the stretching process are greatly strengthened, but the strength in the perpendicular direction or the less stretched direction is relatively high. It was weak and torn, causing problems such as a short circuit.
- excessively shrinkage of the separator may cause an internal short circuit.
- An object of the present invention is to provide a porous separator and a method of manufacturing the same, in which the tearing of the membrane is greatly reduced during the assembly process of the battery or in the assembled battery.
- the content ratio of the elastic material and the polymer resin is made of a mixture of about 40:60 to about 5:95 based on the weight ratio, the elastic material in the mixture
- An elastic material is uniformly dispersed in a polymer, and a porous separator having an elongation at break value of about 250% or more in a direction of low tensile strength at room temperature is provided.
- a method of manufacturing a porous separator comprising stretching to form a membrane, and thermally fixing the stretched membrane to form a porous separator.
- the thermal shrinkage of the membrane is reduced and the tensile elongation can be greatly increased to provide a porous separator with improved stability.
- FIG. 1 is a flow chart illustrating a manufacturing process of a porous separator according to an embodiment of the present invention.
- permeability used in the separator of the present invention refers to the time at which 100 cc of air permeates through the porous substrate, and in the present application, ultra / 100 cc is used as a unit thereof, and can be used interchangeably. It is usually represented by a Gurley value or the like.
- puncture strength used in the separator of the present invention refers to the resistance of the separator to danger from the outside, for example, penetration of an external object, using g as its unit, puncture strength or piercing strength, and the like. It can be used interchangeably, and typically, the higher this value, the lower the short circuit failure rate in the separator.
- elongation at break used in the separator of the present invention refers to the ratio of the increased distance from the initial stage until the separator is torn at room temperature, using% as its unit. This tensile elongation measurement can be carried out through a tensile test.
- an elastic material is uniformly dispersed in the polymer resin.
- the content ratio of the elastic material and the polymer resin is about 40:60 to about 5:95, or about 30:70 to about 10:90 based on the weight ratio.
- the elongation at break value in the direction of low tensile strength at room temperature may be about 250% or more, or about 300% or more.
- the polymer resin may be, for example, a polyolefin polymer resin without limitation as a raw material particle of the separator provided between the positive electrode and the negative electrode of the secondary battery to maintain an insulating state to prevent a short circuit.
- a polyolefin-based polymer resin is one selected from polyethylene, such as high density polyethylene, linear low density polyethylene, low density polyethylene or ultra high molecular weight polyethylene, polypropylene, polybutylene, polypentene, or a combination of two or more thereof. It is not limited thereto.
- An elastic material is generally used in the present invention means a material having elasticity that can be stretched up to two times or more of its original length under stress and can quickly shrink back to its original length when relaxed.
- elastomers include, but are not limited to, elastomers, natural rubbers or artificial rubbers.
- Non-limiting examples of these elastomers include polyolefin elastomers (POEs), styrenic block copolymers (SBCs), vinyl chloride elastomers, and chlorinated polyethylene elastomers ( chlorinated polyethylene elastomer (CPE), urethane elastomer (TPU), polyester elastomer (TPEE), polyamide elastomer (TPAE), fluorinated elastomer and silicone It may include an elastomer (silicone elastomer).
- PEOs polyolefin elastomers
- SBCs styrenic block copolymers
- vinyl chloride elastomers vinyl chloride elastomers
- chlorinated polyethylene elastomers chlorinated polyethylene elastomer (CPE), urethane elasto
- the polyolefin-based elastomer is one selected from the group consisting of olefins such as ethylene, propylene, butylene, pentene, hexene, heptene and octene, or two or more kinds of polymers such as copolymers, ternary Copolymers or mixtures thereof, or elastomers copolymerized therewith, or one monomer selected from the group consisting of ethylene, propylene, butylene, pentene, hexene, heptene and octene has a skeletal chain structure of the copolymer and the other It may be a graft copolymer in which a monomer of a kind is bound in a branch form.
- olefins such as ethylene, propylene, butylene, pentene, hexene, heptene and octene
- two or more kinds of polymers such as copolymers, ternary
- the polyolefin-based elastomer may be an ethylene-octene copolymer. According to another embodiment of the present invention, the polyolefin-based elastomer may be a copolymer, a terpolymer, a block copolymer, or a graft copolymer including polypropylene in a main chain.
- the polyolefin-based elastomer has a Tm of 90 ° C to 165 ° C.
- Tm 90 degrees C or less, heat resistance falls and it is not suitable for using as a separator of an electrochemical device.
- the porous separator according to one embodiment of the present invention is uniaxial, such as machine direction (MD), or biaxially stretched.
- uniaxial stretching means stretching the membrane in one direction
- biaxial stretching means stretching the membrane in two directions approximately perpendicular to each other. This stretching is performed to form pores in the separator and to impart strength.
- the membrane thus stretched has a property of shrinking in the direction opposite to the stretching direction.
- shrinkage may be more severe in the case of heat rise due to internal or external factors of the battery, which may cause a short circuit of the battery and the like.
- the length of the separator in the case of uniaxial stretching, may be longer than that of the positive electrode so that an extra separator is left over the edges of both electrodes positioned on both sides of the separator in consideration of the stretching direction or the shrinking direction thereof.
- the length of the separator may be longer than that of the positive electrode along the more stretched direction or a contracted direction thereof.
- the secondary battery comprising a positive electrode, a negative electrode, and the above-described separator interposed therebetween.
- the secondary battery may include a lithium secondary battery including a lithium metal secondary battery, a lithium ion secondary battery, a lithium polymer secondary battery or a lithium ion polymer secondary battery.
- Anodes, cathodes and the like can be readily prepared by processes and / or methods known in the art.
- the positive electrode is manufactured in a form in which a positive electrode active material is bound to a positive electrode current collector according to a conventional method known in the art.
- the negative electrode is manufactured in a form in which the negative electrode active material is bound to the negative electrode current collector according to conventional methods known in the art.
- the negative electrode active material may be, for example, carbon such as hardly graphitized carbon or graphite carbon; Li x Fe 2 O 3 (0 ⁇ x ⁇ 1), Li x WO 2 (0 ⁇ x ⁇ 1), Sn x Me 1-x Me ' y O z (Me: Mn, Fe, Pb, Ge; Me' Al, B, P, Si, a Group 1, 2, 3 element, halogen of the periodic table, 0 ⁇ x ⁇ 1;1 ⁇ y ⁇ 3;1 ⁇ z ⁇ 8); Lithium metal; Lithium alloys; Silicon-based alloys; Tin-based alloys; SnO, SnO 2 , PbO, PbO 2 , Pb 2 O 3 , Pb 3 O 4 , Sb 2 O 3 , Sb 2 O 4 , Sb 2 O 5 , GeO, GeO 2 ,
- a + comprises Li +, Na +, an alkali metal cation or an ion composed of a combination thereof, such as K + and B - is PF 6 -, BF 4 -, Cl -, Br -, I -, ClO 4 -, AsF 6 -, CH 3 CO 2 -, CF 3 SO 3 -, N (CF 3 SO 2) 2 -
- Salts containing ions consisting of anions such as C (CF 2 SO 2 ) 3 - or combinations thereof include propylene carbonate (PC), ethylene carbonate (EC), diethyl carbonate (DEC), dimethyl carbonate (DMC), Dipropyl carbonate (DPC), dimethyl sulfoxide, acetonitrile, dimethoxyethane, diethoxyethane, tetrahydrofuran, N-methyl-2-pyrrolidone (PC), propylene carbonate (PC), ethylene carbonate (EC), diethyl carbonate (DEC), dimethyl carbonate (D
- the injection of the electrolyte may be performed at an appropriate step in the battery manufacturing process, depending on the manufacturing process and the required physical properties of the final product.
- a lamination (stack) and folding process of the separator and the electrode may be performed in addition to the general winding process.
- the method of manufacturing a porous separator according to another aspect of the present invention includes (S1) forming an extruded sheet, (S2) forming a membrane, and (S3) forming a porous separator.
- step S1 polymers and elastic materials are selected and mixed according to a desired separator, and the mixture is extruded to form an extruded sheet.
- elastomers such as polyolefin-based elastomers typically have a low melting point (T m ).
- T m melting point
- the heat shrinkage of the resulting separator may increase.
- the elastic material is used in a small amount, the desired elongation cannot be achieved, and a high yield strain on the stress-strain (SS) curve is difficult to be improved.
- the polymer and the elastic material are preferably mixed in a weight ratio of about 95: 5 to about 60:40, or about 90:10 to about 70:30.
- the mixture of the polymer and the elastic material is extruded through an extruder.
- the extruder is not particularly limited and may be an extruder conventionally used in the art, such as but not limited to an extruder having a T-die or a tubular die attached thereto.
- the extrusion process can be carried out at a conventional extrusion temperature, but is preferably carried out in the range of "melting point of the polymer + temperature of about 10 °C" to "melting point of the polymer + temperature of about 100 °C". Extrusion of the mixture at a temperature higher or lower than this range of temperature may cause thermal degradation reaction of the polymer, thus making molding difficult and deteriorating physical properties of the prepared film. Through this extrusion process, an extruded sheet is formed.
- step S2 the extruded sheet formed in step S1 is subjected to an annealing and stretching process.
- the annealing process may use a method of contacting the extruded sheet with a heated metal sheet, a method of heating the extruded sheet from a roll inside or outside the oven, or heating by infrared irradiation, and the like. It is also possible to use a method of heating the roll in an oven by winding it on a roll, and the like.
- the temperature of the annealing may be set at a temperature lower than the melting point of the polymer used, for example, a temperature range between the temperature lower than the melting point and the melting point of the polymer, and the annealing may be performed while the temperature is gradually changed.
- stretching in the range of about 0 to about 20%, preferably in the range of about 0 to about 10% with respect to the length of the extruded sheet can increase the elastic recovery rate of the film.
- the annealing temperature is equal to or higher than the melting point of the polymer, the structure of the polymer used in the present invention melts and collapses, thereby forming a structure having no orientation upon cooling.
- the annealing time is preferably about 30 seconds or more. If the annealing time is within 30 seconds, the annealing of the extruded sheet is not sufficient, so that the increase in elastic recovery rate is slight.
- the stretching process is carried out through a stretching method commonly used in the art.
- This stretching method may include processes such as low temperature stretching and / or high temperature stretching using a stretching machine conventionally used in the art.
- Non-limiting examples of this stretching machine include sequential biaxial stretching machine and the like.
- Such elongated membranes may, for example, have improved mechanical strength.
- the stretching process is carried out in the machine direction (MD direction, machine direction, longitudinal direction) and / or transverse direction (TD), vertical direction.
- the tensile strength in the stretching direction is increased by the stretching step in all or one of these directions.
- the separator of the present invention may be carried out in the stretching process in longitudinal (MD) stretching and / or transverse (TD) stretching alone (eg uniaxial stretching), simultaneously or sequentially (eg biaxial stretching). .
- step S3 the film stretched in the step S2 is thermally fixed by heat treatment. This thermal fixation forms a porous separator.
- the stretched membrane is finally heat set to obtain a separator having the desired air permeability.
- the stretch-relaxed film by the preceding process undergoes heat fixation to reduce the shrinkage of the final film by removing the last remaining stress.
- Heat fixation is to fix the film for a certain time as it is under tension at a temperature below the melting point of the polymer used, and to force the film to shrink to remove the residual stress by applying heat.
- Heat fixation is advantageous for high temperatures to lower the shrinkage, but if too high, the membrane partially melts, causing the formed pores to become clogged, resulting in reduced air permeability.
- Such heat set temperatures may range from, for example, but not limited to, "melting point of the polymer-temperature of about 80 ° C" to "melting point of the polymer-temperature of about 5 ° C".
- the pores in the membrane will produce a desired range of porosity and / or air permeability, such as about 35% or more of porosity and / or about 300 sec / 100 cc or less of permeability of 15 ⁇ m thick.
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- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cell Separators (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
인장신도(%) | |
실시예 1 | 320 |
실시예 2 | 375 |
비교예 1 | 120 |
Claims (18)
- 탄성물질과 고분자 수지의 함량비가 중량비를 기준으로 40:60 내지 5:95로 혼합된 혼합물로 이루어지며, 상기 혼합물에서 상기 탄성물질(elastic material)이 고분자 수지 중에 균일하게 분산되어 있고, 상온에서의 인장신도가 낮은 방향의 인장신도(elongation at break) 값이 250% 이상인 다공성 분리막.
- 제1항에 있어서,상기 고분자 수지가 폴리올레핀계 고분자인 것을 특징으로 하는 다공성 분리막.
- 제2항에 있어서,상기 폴리올레핀계 고분자 수지가 폴리에틸렌, 폴리프로필렌, 폴리부틸렌 및 폴리펜텐으로 이루어진 군으로부터 선택되는 1종, 또는 이들 중 2종 이상의 조합물인 것을 특징으로 하는 다공성 분리막.
- 제1항에 있어서,상기 탄성물질이 탄성중합체(elastomer), 천연고무 또는 인조고무인 것을 특징으로 하는 다공성 분리막.
- 제4항에 있어서,상기 탄성중합체가 폴리올레핀계 탄성중합체(polyolefin elastomer, POE)인 것을 특징으로 하는 다공성 분리막.
- 제5항에 있어서,상기 폴리올레핀계 탄성중합체가 에틸렌, 프로필렌, 부틸렌, 펜텐, 헥센, 헵텐 및 옥텐으로 이루어진 군으로부터 선택되는 1종, 또는 이들 중 2종 이상의 중합체, 또는 이들과 공중합된 탄성중합체인 것을 특징으로 하는 다공성 분리막.
- 제1항에 있어서,일축 또는 이축 연신되어 있는 것을 특징으로 하는 다공성 분리막.
- 제7항에 있어서,상기 일축 연신을 종방향(machine direction, MD)으로 실시하는 것을 특징으로 하는 다공성 분리막.
- 양극, 음극, 및 이들 사이에 개재된 제1항 내지 제8항 중 어느 한 항의 다공성 분리막을 포함하는 이차전지.
- 제9항에 있어서,상기 이차전지가 리튬 이차전지인 것을 특징으로 하는 이차전지.
- 고분자 수지와 탄성물질(elastic material)을 95:5 내지 60:40의 중량비로 혼합하여 혼합물을 준비하고 상기 혼합물을 압출기를 통하여 압출시켜 압출 시트를 형성하는 단계,상기 압출 시트를 어닐링하고 연신하여 막을 형성하는 단계, 및상기 연신된 막을 열 고정시켜 다공성 분리막을 형성하는 단계를 포함하는다공성 분리막의 제조방법.
- 제11항에 있어서,상기 고분자 수지가 폴리올레핀계 고분자인 것을 특징으로 하는 다공성 분리막의 제조방법.
- 제12항에 있어서,상기 폴리올레핀계 고분자가 폴리에틸렌, 폴리프로필렌, 폴리부틸렌 및 폴리펜텐으로 이루어진 군으로부터 선택되는 1종, 또는 이들 중 2종 이상의 조합물인 것을 특징으로 하는 다공성 분리막의 제조방법.
- 제11항에 있어서,상기 탄성물질이 탄성중합체(elastomer), 천연고무 또는 인조고무인 것을 특징으로 하는 다공성 분리막의 제조방법.
- 제14항에 있어서,상기 탄성중합체가 폴리올레핀계 탄성중합체(polyolefin elastomer, POE)인 것을 특징으로 하는 다공성 분리막의 제조방법.
- 제15항에 있어서,상기 폴리올레핀계 탄성중합체가 에틸렌, 프로필렌, 부틸렌, 펜텐, 헥센, 헵텐 및 옥텐으로 이루어진 군으로부터 선택되는 1종, 또는 이들 중 2종 이상의 중합체, 또는 이들과 공중합된 탄성중합체인 것을 특징으로 하는 다공성 분리막의 제조방법.
- 제11항에 있어서,상기 압출 시트의 연신이 일축 또는 이축 연신인 것을 특징으로 하는 다공성 분리막의 제조방법.
- 제17항에 있어서,상기 일축 연신을 종방향(machine direction, MD)으로 실시하는 것을 특징으로 하는 다공성 분리막의 제조방법.
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PL13842195T PL2819215T3 (pl) | 2012-09-25 | 2013-09-25 | Sposób wytwarzania porowatego separatora zawierającego materiał elastyczny, separator porowaty wytwarzany tym sposobem oraz akumulator zawierający ten separator |
IN2239MUN2014 IN2014MN02239A (ko) | 2012-09-25 | 2013-09-25 | |
BR112014024527A BR112014024527B8 (pt) | 2012-09-25 | 2013-09-25 | Método para a fabricação de separador poroso compreendendo material elástico |
EP13842195.3A EP2819215B1 (en) | 2012-09-25 | 2013-09-25 | Method of manufacturing porous separator comprising elastic material, porous separator manufactured by the method, and secondary battery comprising the separator |
JP2015531025A JP6306019B2 (ja) | 2012-09-25 | 2013-09-25 | 弾性物質を含む多孔性分離膜の製造方法、その方法によって製造された多孔性分離膜(セパレータ)、及びその分離膜を含む二次電池 |
CN201380022185.XA CN104272500B (zh) | 2012-09-25 | 2013-09-25 | 制造包含弹性材料的多孔隔膜的方法、通过该方法制造的多孔隔膜以及包括该隔膜的二次电池 |
US14/452,787 US10135053B2 (en) | 2012-09-25 | 2014-08-06 | Method of manufacturing porous separator comprising elastic material, porous separator manufactured by the method, and secondary battery comprising the separator |
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KR10-2012-0106545 | 2012-09-25 | ||
KR20120106545 | 2012-09-25 | ||
KR10-2013-0114158 | 2013-09-25 | ||
KR1020130114158A KR101527549B1 (ko) | 2012-09-25 | 2013-09-25 | 탄성물질을 포함하는 다공성 분리막의 제조방법, 이 방법에 의해 제조된 다공성 분리막 및 이 분리막을 포함하는 이차전지 |
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US14/452,787 Continuation US10135053B2 (en) | 2012-09-25 | 2014-08-06 | Method of manufacturing porous separator comprising elastic material, porous separator manufactured by the method, and secondary battery comprising the separator |
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WO2014051339A1 true WO2014051339A1 (ko) | 2014-04-03 |
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EP (1) | EP2819215B1 (ko) |
JP (1) | JP6306019B2 (ko) |
KR (1) | KR101527549B1 (ko) |
CN (1) | CN104272500B (ko) |
BR (1) | BR112014024527B8 (ko) |
IN (1) | IN2014MN02239A (ko) |
PL (1) | PL2819215T3 (ko) |
WO (1) | WO2014051339A1 (ko) |
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JP6870586B2 (ja) * | 2017-11-15 | 2021-05-12 | トヨタ自動車株式会社 | 非水電解液二次電池 |
JPWO2019167861A1 (ja) * | 2018-02-27 | 2020-12-17 | 東レ株式会社 | フィルム、及びその製造方法 |
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KR102295069B1 (ko) | 2018-08-17 | 2021-08-26 | 주식회사 엘지화학 | 전기화학소자용 분리막 및 이의 제조방법 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107910475A (zh) * | 2017-10-30 | 2018-04-13 | 汪涛 | 一种锂离子电池用多孔隔离膜及其制备方法 |
CN107910475B (zh) * | 2017-10-30 | 2019-11-08 | 江西迪比科股份有限公司 | 一种锂离子电池用多孔隔离膜及其制备方法 |
Also Published As
Publication number | Publication date |
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CN104272500A (zh) | 2015-01-07 |
US10135053B2 (en) | 2018-11-20 |
IN2014MN02239A (ko) | 2015-07-24 |
PL2819215T3 (pl) | 2019-09-30 |
CN104272500B (zh) | 2017-07-14 |
KR101527549B1 (ko) | 2015-06-16 |
US20140342238A1 (en) | 2014-11-20 |
JP6306019B2 (ja) | 2018-04-04 |
JP2015532774A (ja) | 2015-11-12 |
KR20140040060A (ko) | 2014-04-02 |
BR112014024527B8 (pt) | 2023-01-17 |
EP2819215A1 (en) | 2014-12-31 |
EP2819215A4 (en) | 2015-11-04 |
EP2819215B1 (en) | 2019-04-17 |
BR112014024527B1 (pt) | 2021-06-22 |
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