WO2015152636A1 - 세퍼레이터의 제조방법, 이로부터 형성된 세퍼레이터 및 이를 포함하는 전기화학소자 - Google Patents
세퍼레이터의 제조방법, 이로부터 형성된 세퍼레이터 및 이를 포함하는 전기화학소자 Download PDFInfo
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- WO2015152636A1 WO2015152636A1 PCT/KR2015/003260 KR2015003260W WO2015152636A1 WO 2015152636 A1 WO2015152636 A1 WO 2015152636A1 KR 2015003260 W KR2015003260 W KR 2015003260W WO 2015152636 A1 WO2015152636 A1 WO 2015152636A1
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- separator
- inorganic particles
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- lithium
- porous polymer
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Definitions
- the present invention relates to a method for manufacturing a separator of an electrochemical device such as a lithium secondary battery, a separator formed therefrom, and an electrochemical device including the same.
- lithium secondary batteries developed in the early 1990s have a higher operating voltage and greater energy density than conventional batteries such as Ni-MH, Ni-Cd, and sulfuric acid-lead batteries that use an aqueous electrolyte solution. I am in the spotlight.
- lithium ion batteries have safety problems such as ignition and explosion due to the use of the organic electrolyte, and are difficult to manufacture.
- the lithium ion polymer battery has been considered as one of the next generation batteries by improving the weakness of the lithium ion battery, but the capacity of the battery is still relatively low compared to the lithium ion battery, and the discharge capacity is improved due to insufficient discharge capacity at low temperatures. This is urgently needed.
- electrochemical devices are produced by many companies, but their safety characteristics show different aspects. It is very important to evaluate the safety and secure the safety of these electrochemical devices. The most important consideration is that the electrochemical device should not cause injury to the user in case of malfunction. For this purpose, safety standards strictly regulate the ignition and smoke in the electrochemical device. In the safety characteristics of the electrochemical device, there is a high possibility that an explosion occurs when the electrochemical device is overheated to cause thermal runaway or the separator penetrates.
- the polyolefin-based porous polymer substrate commonly used as a separator of an electrochemical device exhibits extreme heat shrinkage behavior at a temperature of 100 degrees or more due to material characteristics and manufacturing process characteristics including stretching, and thus, between the cathode and the anode. There is a problem that causes a short circuit.
- a separator having a porous organic-inorganic coating layer formed by coating a mixture of excess inorganic particles and a binder polymer on at least one surface of a porous polymer substrate having a plurality of pores has been proposed.
- the inorganic particles contained in the porous organic-inorganic coating layer have excellent heat resistance, and thus prevent a short circuit between the cathode and the anode even when the electrochemical device is overheated.
- the separator in which the porous organic-inorganic coating layer is formed is generally manufactured through a process of forming an organic-inorganic coating layer on the porous polymer substrate by dip coating.
- the manufacturing method uses an organic solvent-based slurry, safety in the manufacturing process of the electrochemical device may be a problem, and there is a problem that environmental friendliness and economic efficiency are low.
- aqueous slurries are safe, environmentally friendly, and economical, but they have high surface tension, which makes them difficult to apply for separator coating due to low wetting problems on polyolefin-based substrates. .
- the problem to be solved by the present invention is to ensure the wettability with the porous polymer substrate by using an aqueous slurry having a predetermined physical property in the process of manufacturing a separator coated with a slurry on the porous polymer substrate to form an organic-inorganic composite porous coating layer It is to provide a method for manufacturing a separator that can be.
- Another object of the present invention is to provide a separator obtained by the above production method.
- Another object of the present invention is to provide an electrochemical device including the separator.
- the present invention to solve the above problems,
- the capillary number is determined by Equation 1:
- Capillary Number (Ca) ( ⁇ ⁇ U) / ⁇
- ⁇ viscosity (kgfs / m 2 )
- a cathode Anode; And it provides an electrochemical device having the separator interposed between the cathode and the anode.
- the electrochemical device may be a lithium secondary battery.
- the present invention provides a method for manufacturing a separator that can form an organic-inorganic composite coating layer on the surface of a porous polymer substrate using an aqueous slurry, thereby securing process safety and economical efficiency, and having the separator thus obtained.
- the safety of the electrochemical device can be improved.
- a method of preparing a separator includes preparing an aqueous slurry including inorganic particles, a binder polymer, and an aqueous medium, and then applying the same to at least one surface of a porous polymer substrate to form an organic-inorganic composite porous coating layer.
- the capillary number of the aqueous slurry may be determined by Equation 1 below.
- Capillary Number (Ca) ( ⁇ ⁇ U) / ⁇
- ⁇ is the viscosity (kgf ⁇ s / m 2 )
- U is the coating speed (m / s)
- ⁇ is the surface tension (kgf / m).
- the capillary water is an element that determines the wettability of the aqueous slurry, and by appropriately controlling the capillary water, it is possible to secure the wettability of the porous polymer substrate and the aqueous slurry to ensure easy coating property.
- This capillary number is determined by the viscosity, coating speed and surface tension of the aqueous slurry, the viscosity may vary depending on the solids content and feed temperature of the aqueous slurry.
- the coating rate means a rate at which the aqueous slurry is applied onto the substrate, and the wettability of the aqueous slurry to the substrate may vary according to the coating rate.
- the surface tension since the wettability may be secured when the surface tension is low, this value may be minimized through additives.
- the value determined by Equation 1 may be in the range of 0.3 to 65, for example, 0.5 to 45. In such a range, the wettability with the porous polymer substrate having a low surface tension may be secured to obtain easy coatability.
- the viscosity of the aqueous slurry can be adjusted to an appropriate range, where a thickener may be used.
- a thickener is not particularly limited as long as it is a substance capable of adjusting the viscosity of the aqueous slurry.
- the ratio of the thickener with respect to an aqueous slurry is 0.1 mass% or more with respect to an inorganic substance normally, Preferably it is 0.5 mass% or more, More preferably, it is 0.6 mass% or more, and as an upper limit, it is usually 5 It is the range of mass% or less, Preferably it is 3 mass% or less, More preferably, it is 2 mass% or less. If it is less than this range, applicability
- the viscosity of the aqueous slurry may also vary depending on the supply temperature. As the temperature decreases, the viscosity increases, and when the temperature increases, the viscosity decreases. Therefore, by selecting an appropriate feed temperature, it is possible to appropriately control the viscosity of the aqueous slurry. As such a supply temperature range, 10-50 degreeC can be illustrated.
- the viscosity of the aqueous slurry adjusted through the thickener may have a range of 0.005 to 0.05 kgf ⁇ s / m 2 , for example, 0.01 to 0.25 kgf ⁇ s / m 2 .
- the coating speed of the aqueous slurry may be appropriately adjusted to a range in which the application of the aqueous slurry to the porous polymer substrate is easily performed, that is, a range in which wettability is secured.
- Such coating speed may be determined by variables in the process, such as mechanical control, such as the speed or tension of the roller, and may range from 10 to 100 m / s, for example 30 to 70 m / s. If it is out of the range, there is a problem that the applicability of the aqueous slurry is lowered or the process time is long and economic efficiency is lowered.
- an additive may be introduced into the aqueous slurry to induce a decrease in surface tension
- additives include emulsifiers, and specifically, hydrophilic surfactants such as polyoxyethylene (10) -hydrogenated castor oil, At least one hydrophilic surfactant selected from the group consisting of polyoxyethylene (40) -hydrogenated castor oil, polyoxyethylene (60) -hydrogenated castor oil, siloxane, polysorbate 60, polysorbate 80 and polysorbate 20 Include.
- Such additives may be added in an amount of about 0.1 to about 3.0 weight percent based on the weight of the aqueous slurry.
- the surface tension of the aqueous slurry may be adjusted in the range of 0.0015 to 0.007 kgf / m.
- the aqueous medium used in the aqueous slurry may be water or a mixed medium of alcohol and water.
- the alcohol may be methanol, ethanol, propanol, isopropanol, butanol, t-butanol, pentanol and the like, but is not limited thereto.
- porous polymer substrate coated using the aqueous slurry examples include a porous polymer film substrate or a porous polymer nonwoven substrate.
- a separator made of a porous polymer film made of polyolefin such as polyethylene and polypropylene may be used, and the polyolefin porous polymer film substrate may have a shutdown function at a temperature of, for example, 80 to 130 ° C.
- the polyolefin porous polymer film may be a high-density polyethylene, a linear low-density polyethylene, a low-density polyethylene, an ultra high molecular weight polyethylene such as polyethylene, polypropylene, polybutylene, polypentene, or the like. Can be formed.
- the porous polymer film substrate may be a porous polymer film using a variety of polymers, such as polyester in addition to polyolefin.
- the porous polymer film base material may be formed in a structure in which two or more film layers are laminated, and each film layer may be formed of a polymer in which two or more kinds of polymers, such as polyolefin and polyester, described above are singly or mixed. It may be.
- the porous polymer nonwoven fabric base may be made of a fiber using a polymer such as the above-described polyolefin-based polymer or polyester such as polyethylene terephthalate (PET) having higher heat resistance. Even when manufacturing the porous polymeric nonwoven substrate, it may be prepared by mixing a single fiber or two or more fibers.
- a polymer such as the above-described polyolefin-based polymer or polyester such as polyethylene terephthalate (PET) having higher heat resistance.
- PET polyethylene terephthalate
- the material or form of the porous polymer film substrate may be variously selected as desired.
- the thickness of the porous polymer substrate is not particularly limited, but is preferably 1 to 100 ⁇ m, more preferably 5 to 50 ⁇ m, and the pore size and pore present in the porous polymer substrate are also not particularly limited, but 0.01 to 50, respectively. Preference is given to m and 10 to 95%.
- the method of coating the aqueous slurry on the porous polymer substrate is not particularly limited, but it is preferable to use a slot coating method or a dip coating method.
- the slot coating is capable of adjusting the thickness of the porous coating layer according to the flow rate supplied from the metering pump in such a way that the coating liquid supplied through the slot die is applied to the front surface of the substrate.
- dip coating is a method of dipping and coating the substrate in the tank containing the coating liquid, and it is possible to adjust the thickness of the porous coating layer according to the concentration of the coating liquid and the rate of removing the substrate from the coating liquid tank, and after immersion for more accurate coating thickness control It may be post-weighed through, etc., and then dried in an oven to form a porous coating layer on both sides of the porous polymer substrate.
- the inorganic particles are not particularly limited as long as they are electrochemically stable. That is, the inorganic particles that can be used in the present invention are not particularly limited as long as the oxidation and / or reduction reactions do not occur in the operating voltage range (for example, 0 to 5 V on the basis of Li / Li + ) of the applied electrochemical device.
- the ionic conductivity of the electrolyte may be improved by contributing to an increase in the dissociation degree of the electrolyte salt, such as lithium salt, in the liquid electrolyte.
- the inorganic particles preferably include high dielectric constant inorganic particles having a dielectric constant of 5 or more, preferably 10 or more.
- inorganic particles having a dielectric constant of 5 or more include BaTiO 3 , Pb (Zr, Ti) O 3 (PZT), Pb 1-x La x Zr 1-y Ti y O 3 (PLZT, 0 ⁇ x ⁇ 1 , 0 ⁇ y ⁇ 1), Pb (Mg 1/3 Nb 2/3 ) O 3 -PbTiO 3 (PMN-PT), Hafnia (HfO 2 ), SrTiO 3 , SnO 2 , CeO 2 , MgO, NiO, CaO, ZnO, ZrO 2 , Y 2 O 3 , Al 2 O 3 , boehmite ( ⁇ -AlO (OH)), TiO 2, SiC Or mixtures thereof.
- the inorganic particles may be inorganic particles having lithium ion transfer capability, that is, inorganic particles containing lithium elements but having a function of transferring lithium ions without storing lithium.
- inorganic particles having a lithium ion transfer capacity include lithium phosphate (Li 3 PO 4 ), lithium titanium phosphate (Li x Ti y (PO 4 ) 3 , 0 ⁇ x ⁇ 2, 0 ⁇ y ⁇ 3), Lithium aluminum titanium phosphate (Li x Al y Ti z (PO 4 ) 3 , 0 ⁇ x ⁇ 2, 0 ⁇ y ⁇ 1, 0 ⁇ z ⁇ 3), 14Li 2 O-9Al 2 O 3 -38TiO 2 -39P 2 (LiAlTiP) x O y series glass such as O 5 (0 ⁇ x ⁇ 4, 0 ⁇ y ⁇ 13), lithium lanthanum titanate (Li x La y TiO 3 , 0 ⁇ x ), lithium lanthan
- the average particle diameter of the inorganic particles is not particularly limited, but in order to form a porous coating layer having a uniform thickness and an appropriate porosity, it is preferably in the range of 0.001 to 10 ⁇ m. If the thickness is less than 0.001 ⁇ m, the dispersibility may be reduced, and if the thickness is more than 10 ⁇ m, the thickness of the porous coating layer formed may be increased.
- the binder polymer preferably uses a polymer having a glass transition temperature (T g ) of ⁇ 200 to 200 ° C., which may improve mechanical properties such as flexibility and elasticity of the finally formed porous coating layer. Because.
- the binder polymer does not necessarily have an ion conducting ability, but when a polymer having an ion conducting ability is used, the performance of the electrochemical device may be further improved. Therefore, the binder polymer is preferably as high as possible dielectric constant. In fact, since the dissociation degree of the salt in the electrolyte depends on the dielectric constant of the solvent of the electrolyte, the higher the dielectric constant of the binder polymer, the higher the dissociation of the salt in the electrolyte.
- Non-limiting examples of such binder polymers include styrene-butadiene rubber (SBR), acrylate (acrylate), and the like.
- the weight ratio of the inorganic particles and the binder polymer is preferably in the range of 50:50 to 99: 1, more preferably 60:40 to 99: 1, even more preferably 70:30 to 95: 5.
- the content ratio of the inorganic particles to the binder polymer is less than 50:50, the pore size and porosity of the porous coating layer formed by increasing the content of the polymer may be reduced.
- the content of the inorganic particles exceeds 99 parts by weight, since the binder polymer content is small, the peeling resistance of the porous coating layer formed may be weakened.
- the binder polymer may be dispersed in an emulsion in a solvent and non-limiting examples of solvents that may be used to facilitate uniform mixing and solvent removal include water, methanol, ethanol, and isopropyl. Alcohol (isopropyl alcohol) or a mixture thereof.
- the slurry in which the inorganic particles are dispersed and the binder polymer is dissolved in the solvent may be prepared by dissolving the binder polymer in the solvent and then adding the inorganic particles and dispersing the binder polymer.
- the inorganic particles may be added in a state of being crushed to an appropriate size, but after adding the inorganic particles to the solution of the binder polymer, it is preferable to disperse the inorganic particles while crushing by using a ball mill method.
- the organic-inorganic composite porous coating layer prepared by the above method may have improved wettability with respect to the porous polymer substrate, thereby improving connectivity.
- the inorganic particles are filled and bound to each other by the binder polymer in contact with each other, thereby forming an interstitial volume between the inorganic particles, and between the inorganic particles.
- the interstitial volume becomes an empty space to form pores.
- the binder polymer is attached to each other so that the inorganic particles are bound to each other, for example, the binder polymer is connected and fixed between the inorganic particles.
- the pores of the organic-inorganic composite porous coating layer are pores formed by the interstitial volume between the inorganic particles being an empty space, which is substantially in a closed packed or densely packed structure by the inorganic particles. It is a space defined by the inorganic particles interviewed with.
- An electrochemical device may be manufactured by laminating a separator manufactured according to the above method between the cathode and the anode.
- Electrochemical devices include all devices that undergo an electrochemical reaction, and specific examples include capacitors such as all kinds of primary, secondary cells, fuel cells, solar cells, or supercapacitor elements.
- 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 among the secondary batteries is preferable.
- Both electrodes of the cathode and the anode to be applied together with the separator of the present invention are not particularly limited, and the electrode active material may be prepared in a form bound to the electrode current collector according to conventional methods known in the art.
- Non-limiting examples of the cathode active material of the electrode active material may be a conventional cathode active material that can be used in the cathode of the conventional electrochemical device, in particular lithium manganese oxide, lithium cobalt oxide, lithium nickel oxide, lithium iron oxide or a combination thereof It is preferable to use one lithium composite oxide.
- Non-limiting examples of anode active materials include conventional anode active materials that can be used for the anodes of conventional electrochemical devices, in particular lithium metal or lithium alloys, carbon, petroleum coke, activated carbon, Lithium adsorbents such as graphite or other carbons are preferred.
- Non-limiting examples of the cathode current collector is a foil made by aluminum, nickel or a combination thereof, and non-limiting examples of the anode current collector by copper, gold, nickel or a copper alloy or a combination thereof. Foils produced.
- Electrolyte that may be used in the electrochemical device of the present invention is A + B - A salt of the structure, such as, A + comprises a Li +, Na +, an alkali metal cation or an ion composed of a combination thereof, such as K + B - it 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 -, C Salts containing ions consisting of anions such as (CF 2 SO 2 ) 3 - or a combination thereof are propylene carbonate (PC), ethylene carbonate (EC), diethyl carbonate (DEC), dimethyl carbonate (DMC), dipropyl Carbonate (DPC), dimethylsulfoxide, acetonitrile, dimethoxyethane, diethoxyethane, tetrahydrofuran, N-methyl-2-pyrrolidone
- the electrolyte injection may be performed at an appropriate stage of the battery manufacturing process, depending on the manufacturing process and the required physical properties of the final product. That is, it may be applied before the battery assembly or at the end of battery assembly.
- Boehmite ( ⁇ -AlO (OH)) having a particle size of 500 nm as an inorganic material (Nabaltec, Apyral AOH60), styrene butadiene rubber (SBR) as a binder polymer (JSR, TRD102A), and carboxymethyl cellulose (CMC) as a thickener ( Daicel Chemical Industry Co., Ltd., 1220) was mixed in a ratio of 90: 6: 4, dissolved in water at 50 ° C. for at least 3 hours, and then crushed and dispersed in inorganic particles using a ball mill method for at least 12 hours. Aqueous slurry of 30% solids was prepared.
- an emulsifier (Dow Corning, 67 additive) was added at 0.1% of the weight of the slurry.
- the viscosity of the prepared slurry was 0.007 kgf ⁇ s / m 2 , and the surface tension was 0.0025 kgf / m.
- a slurry and a separator were prepared in the same manner as in Example 1, except that the coating speed was changed to 1.5 m / sec in Example 1. Under the above conditions, the capillary number was 4.2, and the manufactured separator was able to secure a uniform thickness of 1 ⁇ m or less in the width direction.
- a slurry and a separator were prepared in the same manner as in Example 2, except that the composition of the slurry was changed to 85: 10: 5 in Example 2. Under the above conditions, the capillary number was 24.0, and the manufactured separator was able to secure a uniform thickness of 1 ⁇ m or less in the width direction.
- a slurry and a separator were prepared in the same manner as in Example 1, except that the emulsifier was not used in Example 1. Capillary number under the above conditions was 0.23. In the coating process, a rivetlet phenomenon occurred, and thus a uniform porous coating layer could not be formed over the entire width of the substrate.
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Abstract
Description
Claims (21)
- 무기물 입자, 바인더 고분자, 및 수계 매질을 포함하는 수계 슬러리를 준비하는 단계;상기 수계 슬러리를 다공성 고분자 기재의 적어도 일면 상에 도포하여 유기-무기 복합 다공성 코팅층을 형성하는 단계;를 포함하고,상기 수계 슬러리의 캐필러리 수(Capillary number)가 0.3 내지 65 인 세퍼레이터의 제조방법:상기 캐필러리 수(capillary number)는 하기 수학식 1에 의해 결정된다:캐필러리 수(Ca) = (μ × U) / σ식 중,μ = 점도(kgf·s/m2)U = 코팅속도(m/s)σ = 표면장력(kgf/m).
- 제1항에 있어서,상기 캐필러리 수 Ca 가 0.4 내지 45 인 것을 특징으로 하는 세퍼레이터의 제조방법.
- 제1항에 있어서,상기 점도(kgf·s/m2) μ가 0.005 내지 0.05 인 것을 특징으로 하는 세퍼레이터의 제조방법.
- 제1항에 있어서,상기 코팅속도(m/s) U가 0.15 내지 2.0 인 것을 특징으로 하는 세퍼레이터의 제조방법.
- 제1항에 있어서,상기 표면장력(kgf/m) σ가 0.0015 내지 0.005 인 것을 특징으로 하는 세퍼레이터의 제조방법.
- 제1항에 있어서,상기 수계 매질이 물, 또는 알코올과 물의 혼합매인 것을 특징으로 하는 세퍼레이터의 제조방법.
- 제1항에 있어서,상기 다공성 고분자 기재는 다공성 고분자 필름 기재 또는 다공성 고분자 부직포 기재인 것을 특징으로 하는 세퍼레이터의 제조방법.
- 제7항에 있어서,상기 다공성 고분자 필름 기재는 폴리올레핀계 다공성 고분자 필름 기재인 것을 특징으로 하는 세퍼레이터의 제조방법.
- 제8항에 있어서,상기 폴리올레핀계 다공성 고분자 필름 기재는 폴리에틸렌, 폴리프로필렌, 폴리부틸렌 및 폴리펜텐으로 이루어진 군으로부터 선택된 일 종 이상의 고분자로 형성된 것을 특징으로 하는 세퍼레이터의 제조방법.
- 제1항에 있어서,상기 다공성 고분자 기재의 두께는 5 내지 50 ㎛이고, 기공 크기 및 기공도는 각각 0.01 내지 50 ㎛ 및 10 내지 95%인 것을 특징으로 하는 세퍼레이터의 제조방법.
- 제1항에 있어서,상기 유기-무기 복합 다공성 코팅층을 형성하는 단계가 슬랏 코팅 방법으로 수행되는 것을 특징으로 하는 세퍼레이터의 제조방법.
- 제1항에 있어서,상기 유기-무기 복합 다공성 코팅층을 형성하는 단계가 딥 코팅 방법으로 수행되는 것을 특징으로 하는 세퍼레이터의 제조방법.
- 제1항에 있어서,상기 무기물 입자의 평균입경은 0.001 내지 10 ㎛인 것을 특징으로 하는 세퍼레이터의 제조방법.
- 제1항에 있어서,상기 무기물 입자는 유전율 상수가 5 이상인 무기물 입자, 리튬 이온 전달 능력을 갖는 무기물 입자 및 이들의 혼합물로 이루어진 군으로부터 선택된 무기물 입자인 것을 특징으로 하는 세퍼레이터의 제조방법.
- 제14항에 있어서,상기 유전율 상수가 5 이상인 무기물 입자는 BaTiO3, Pb(Zr,Ti)O3 (PZT), Pb1-xLaxZr1-yTiyO3(PLZT, 0<x<1, 0<y<1), Pb(Mg1/3Nb2/3)O3-PbTiO3(PMN-PT), 하프니아(HfO2), SrTiO3, SnO2, CeO2, MgO, NiO, CaO, ZnO, ZrO2, SiO2, Y2O3, Al2O3, 보헤마이트(γ-AlO(OH)), SiC 및 TiO2로 이루어진 군으로부터 선택된 어느 하나의 무기물 입자 또는 이들 중 2종 이상의 혼합물인 것을 특징으로 하는 세퍼레이터의 제조방법.
- 제14항에 있어서,상기 리튬 이온 전달 능력을 갖는 무기물 입자는 리튬포스페이트(Li3PO4), 리튬티타늄포스페이트(LixTiy(PO4)3, 0 < x < 2, 0 < y < 3), 리튬알루미늄티타늄포스페이트(LixAlyTiz(PO4)3, 0 < x < 2, 0 < y < 1, 0 < z < 3), (LiAlTiP)xOy 계열 glass(0 < x < 4, 0 < y < 13), 리튬란탄티타네이트(LixLayTiO3, 0 < x < 2, 0 < y < 3), 리튬게르마니움티오포스페이트(LixGeyPzSw, 0 < x < 4, 0 < y < 1, 0 < z < 1, 0 < w < 5), 리튬나이트라이드(LixNy, 0 < x < 4, 0 < y < 2), SiS2 (LixSiySz, 0 < x < 3, 0 < y < 2, 0 < z < 4) 계열 glass 및 P2S5 (LixPySz, 0 < x < 3, 0 < y < 3, 0 < z < 7) 계열 glass로 이루어진 군으로부터 선택된 어느 하나의 무기물 입자 또는 이들 중 2종 이상의 혼합물인 것을 특징으로 하는 세퍼레이터의 제조방법.
- 제1항에 있어서,상기 무기물 입자와 바인더 고분자의 중량비가 50:50 내지 99:1 인 것을 특징으로 하는 세퍼레이터의 제조방법.
- 제 1항에 있어서,상기 바인더 고분자는 스타이렌부타디엔 고무(SBR, styrene-butadiene rubber)계, 및 아크릴레이트(acrylate)계로 이루어진 군으로부터 선택된 1종 또는 이들의 혼합물인 것을 특징으로 하는 세퍼레이터의 제조방법.
- 제1항 내지 제18항 중 어느 한 항에 따른 제조방법에 의해 얻어진 세퍼레이터.
- 캐소드와 애노드, 및 상기 캐소드와 애노드 사이에 개재된 상기 제19항의 세퍼레이터를 포함하는 전기화학소자.
- 제20항에 있어서,상기 전기화학소자는 리튬 이차전지인 것을 특징으로 하는 전기화학소자.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL15772588T PL3043403T3 (pl) | 2014-04-01 | 2015-04-01 | Sposób wytwarzania separatora, wytworzony tym sposobem separator oraz urządzenie elektrochemiczne go zawierające |
| CN201580003015.6A CN105814711B (zh) | 2014-04-01 | 2015-04-01 | 隔膜的制造方法、由该方法制造的隔膜以及包含隔膜的电化学装置 |
| EP15772588.8A EP3043403B1 (en) | 2014-04-01 | 2015-04-01 | Method for manufacturing separator, separator manufactured therefrom, and electrochemical element comprising same |
| JP2016557114A JP6576358B2 (ja) | 2014-04-01 | 2015-04-01 | セパレータの製造方法、その方法で形成されたセパレータ、及びそれを含む電気化学素子 |
| US15/021,535 US10158111B2 (en) | 2014-04-01 | 2015-04-01 | Preparation method of separator having organic-inorganic composite porous coating layer, separator formed therefrom, and electrochemical device containing the same |
| US16/184,815 US10910620B2 (en) | 2014-04-01 | 2018-11-08 | Preparation method of separator having organic-inorganic composite porous coating layer, separator formed therefrom, and electrochemical device containing the same |
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| KR1020140038729A KR101707193B1 (ko) | 2014-04-01 | 2014-04-01 | 세퍼레이터의 제조방법, 이로부터 형성된 세퍼레이터 및 이를 포함하는 전기화학소자 |
| KR10-2014-0038729 | 2014-04-01 |
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| US15/021,535 A-371-Of-International US10158111B2 (en) | 2014-04-01 | 2015-04-01 | Preparation method of separator having organic-inorganic composite porous coating layer, separator formed therefrom, and electrochemical device containing the same |
| US16/184,815 Continuation US10910620B2 (en) | 2014-04-01 | 2018-11-08 | Preparation method of separator having organic-inorganic composite porous coating layer, separator formed therefrom, and electrochemical device containing the same |
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| EP (1) | EP3043403B1 (ko) |
| JP (1) | JP6576358B2 (ko) |
| KR (1) | KR101707193B1 (ko) |
| CN (1) | CN105814711B (ko) |
| PL (1) | PL3043403T3 (ko) |
| TW (1) | TWI591880B (ko) |
| WO (1) | WO2015152636A1 (ko) |
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| TWI844427B (zh) * | 2023-01-10 | 2024-06-01 | 明基材料股份有限公司 | 高熱穩定性隔離膜及其製備方法 |
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| CN109891633B (zh) * | 2016-11-18 | 2022-09-16 | 株式会社Lg新能源 | 隔板和包括该隔板的电化学装置 |
| JP2019016436A (ja) * | 2017-07-03 | 2019-01-31 | 宇部マクセル株式会社 | 積層膜ロールおよびその製造方法 |
| KR20190019503A (ko) | 2017-08-18 | 2019-02-27 | 조용균 | 미세다공 기재의 연속 코팅 방법 및 장치와 그로부터 제조된 코팅 미세다공 기재 |
| PL3553869T3 (pl) * | 2017-10-20 | 2021-11-02 | Lg Chem, Ltd. | Zespół elektrod i urządzenie elektrochemiczne zawierające zespół elektrod |
| KR102280606B1 (ko) | 2018-01-05 | 2021-07-22 | 주식회사 엘지에너지솔루션 | Cmc, 입자형 바인더 및 용해형 바인더를 포함하는 분리막 |
| JP2020161279A (ja) * | 2019-03-26 | 2020-10-01 | 三菱製紙株式会社 | リチウムイオン二次電池用セパレータの製造方法 |
| KR102764920B1 (ko) * | 2019-10-18 | 2025-02-06 | 주식회사 엘지에너지솔루션 | 전기화학소자용 분리막, 상기 분리막을 포함하는 전기화학소자 및 상기 분리막의 제조방법 |
| CN113036131B (zh) | 2019-12-09 | 2024-09-03 | 财团法人工业技术研究院 | 正极材料、包含其的正极及电池 |
| CN113441019A (zh) * | 2020-03-24 | 2021-09-28 | 中昊晨光化工研究院有限公司 | 一种聚四氟乙烯复合过滤材料及其制法与应用 |
| KR102833699B1 (ko) * | 2020-10-29 | 2025-07-15 | 에스케이온 주식회사 | 내열성이 향상된 분리막과 이를 적용한 리튬이차전지 |
| CN112397847B (zh) * | 2020-11-17 | 2023-05-30 | 上海大学(浙江·嘉兴)新兴产业研究院 | 一种锂电池隔膜的水性涂布材料、制备方法及锂电池 |
| CN116154400B (zh) * | 2023-03-29 | 2025-11-21 | 河南大学 | 一种二维阵列毛细管制备Nafion-Li或Nafion膜的方法及其在电池中的应用 |
| CN118336293B (zh) * | 2024-05-11 | 2024-12-10 | 广州埃登达化工有限公司 | 一种锂电池隔膜 |
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Also Published As
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| KR101707193B1 (ko) | 2017-02-27 |
| CN105814711A (zh) | 2016-07-27 |
| TWI591880B (zh) | 2017-07-11 |
| TW201601368A (zh) | 2016-01-01 |
| US10158111B2 (en) | 2018-12-18 |
| EP3043403B1 (en) | 2018-08-29 |
| US10910620B2 (en) | 2021-02-02 |
| PL3043403T3 (pl) | 2019-04-30 |
| CN105814711B (zh) | 2018-09-11 |
| JP6576358B2 (ja) | 2019-09-18 |
| EP3043403A1 (en) | 2016-07-13 |
| US20160226051A1 (en) | 2016-08-04 |
| EP3043403A4 (en) | 2017-05-24 |
| JP2017517834A (ja) | 2017-06-29 |
| KR20150114276A (ko) | 2015-10-12 |
| US20190081306A1 (en) | 2019-03-14 |
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