WO2012099321A1 - 전기화학소자용 전해질, 그 제조방법 및 이를 구비한 전기화학소자 - Google Patents
전기화학소자용 전해질, 그 제조방법 및 이를 구비한 전기화학소자 Download PDFInfo
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- WO2012099321A1 WO2012099321A1 PCT/KR2011/008023 KR2011008023W WO2012099321A1 WO 2012099321 A1 WO2012099321 A1 WO 2012099321A1 KR 2011008023 W KR2011008023 W KR 2011008023W WO 2012099321 A1 WO2012099321 A1 WO 2012099321A1
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- 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
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0565—Polymeric materials, e.g. gel-type or solid-type
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/20—Manufacture of shaped structures of ion-exchange resins
- C08J5/22—Films, membranes or diaphragms
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/20—Manufacture of shaped structures of ion-exchange resins
- C08J5/22—Films, membranes or diaphragms
- C08J5/2206—Films, membranes or diaphragms based on organic and/or inorganic macromolecular compounds
- C08J5/2275—Heterogeneous membranes
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- 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
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- 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
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
- H01M10/0569—Liquid materials characterised by the solvents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
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- 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 an electrolyte for an electrochemical device, a method for manufacturing the same, and an electrochemical device having the same, and more particularly, to a plastic crystal matrix electrolyte.
- a secondary battery which is a typical case of an electrochemical device, refers to a device that converts external electrical energy into chemical energy and stores it and generates electricity when needed.
- the term “rechargeable battery” is also used to mean that it can be charged multiple times.
- Commonly used secondary batteries include lead storage batteries, nickel cadmium batteries (NiCd), nickel hydrogen storage batteries (NiMH), lithium ion batteries (Li-ion), and lithium ion polymer batteries (Li-ion polymer). Secondary batteries offer both economic and environmental advantages over primary batteries that are used once and discarded.
- Secondary batteries are currently used where low power is used. Examples are devices, handhelds, tools, and uninterruptible power supplies that help start up the car. Recently, the development of wireless communication technology has led to the popularization of portable devices, and there is also a tendency to wirelessize many kinds of conventional devices, and the demand for secondary batteries is exploding. In addition, hybrid vehicles and electric vehicles have been put to practical use in terms of prevention of environmental pollution, and these next-generation vehicles employ technologies that use secondary batteries to reduce value, weight, and increase lifespan.
- secondary batteries are cylindrical, rectangular or pouch type batteries. This is because the secondary battery is manufactured by mounting an electrode assembly composed of a negative electrode, a positive electrode, and a separator inside a pouch-shaped case of a cylindrical or rectangular metal can or an aluminum laminate sheet, and injecting an electrolyte into the electrode assembly. Therefore, since a certain space for mounting the secondary battery is essentially required, the cylindrical, square or pouch type of the secondary battery has a problem in that it acts as a limitation for the development of various types of portable devices. Accordingly, there is a need for a new type of secondary battery that is easy to deform, and in particular, an electrolyte requires a suitable material such as an electrolyte having excellent ion conductivity without fear of leakage.
- a liquid electrolyte which is an ion conductive organic liquid electrolyte in which salts are dissolved in a non-aqueous organic solvent, has been mainly used as an electrolyte for an electrochemical device using an electrochemical reaction.
- the use of a liquid electrolyte in this manner is not only highly likely to degenerate the electrode material and volatilize the organic solvent, but also may cause safety problems such as combustion caused by an increase in the ambient temperature and the temperature of the battery itself.
- a polymer electrolyte such as a gel polymer electrolyte or a solid polymer electrolyte has been proposed to overcome the safety problem of the liquid electrolyte.
- the safety of the electrochemical device is improved in the order of liquid electrolyte ⁇ gel polymer electrolyte ⁇ solid polymer electrolyte, while the performance of the electrochemical device is known to decrease. Due to the performance of such inferior electrochemical devices, batteries using a solid polymer electrolyte have not been commercialized.
- the gel polymer electrolyte is less ionic conductivity than the liquid electrolyte, there is a risk of leakage, there is a disadvantage that the mechanical properties are not excellent.
- Korean Patent Laid-Open Publication No. 2008-33421 discloses an electrolyte using a plastic crystal matrix instead of a liquid organic solvent, which shows an ion conductivity that is inferior to the liquid electrolyte.
- a plastic crystal matrix instead of a liquid organic solvent, which shows an ion conductivity that is inferior to the liquid electrolyte.
- a separator for short circuit prevention is required.
- a linear polymer matrix such as polyethylene oxide may be introduced to improve the mechanical strength of the plastic crystal matrix electrolyte.
- such an electrolyte may not have mechanical properties that can replace the role of a separator.
- an additional drying process is required because a solvent for dissolving the linear polymer is used in the manufacturing process.
- an object of the present invention is to provide a plastic crystal matrix electrolyte excellent in ion conductivity and capable of securing mechanical strength, and a method of manufacturing the same.
- Plastic crystal matrix electrolyte doped with ionic salts to solve the above problems; And a polymer having a weight average molecular weight of 100 to 5000 and a polymer crosslinked structure in which a linear polymer having one functional group is chemically bonded to a side chain.
- the complex may further include a linear polymer having no functional group.
- the electrolyte may include 40 to 90 wt% of the crystalline salt doped plastic crystal matrix electrolyte, and succinonitrile or the like may be used as the plastic crystal matrix.
- the ionic salt is preferably a lithium salt, but lithium bis-trifluoromethanesulfonylimide, lithium bis-perfluoroethylsulfonylimide, lithium tetrafluoroborate and the like can be used.
- linear average polymer having a weight average molecular weight of 100 to 5000, and having one functional group may be polyethylene glycol methacrylate, polyethylene glycol acrylate, polyethylene glycol methyl ether acrylate, polyethylene glycol methyl ether methacrylate, or the like.
- a monomer having two or more functional groups is preferably polymerized, and trimethylolpropane ethoxylate triacrylate, polyethylene glycol dimethacrylate, polyethylene glycol diacrylate, divinylbenzene, polyester Dimethacrylate, divinyl ether, trimethylolpropane trimethacrylate, ethoxylated bisphenol A dimethacrylate, and the like can be used.
- linear polymer having no functional group which may be further included in the present invention, polyethylene oxide, polypropylene oxide, polyoxymethylene, polydimethylsiloxane, polyacrylonitrile, polymethyl methacrylate, polyvinyl chloride, polyvinyl Leaden fluoride, polyvinylidene fluoride-co-hexafluoropropylene, polyethylene imine, poly p-phenylene terephthalamide, polymethoxy polyethyleneglycol methacrylate and poly2-methoxyethyl glycidyl ether Can be.
- a plastic crystal matrix electrolyte doped with an ionic salt of the present invention and a polymer crosslinked structure in which a linear polymer having a weight average molecular weight of 100 to 5000 is chemically bonded to a side chain, including: a plastic crystal matrix electrolyte doped with ionic salts; Monomers having two or more functional groups; And mixing a linear polymer having a weight average molecular weight of 100 to 5000 and having one functional group to prepare a solution. And polymerizing monomers in the solution.
- the electrolyte of the present invention has excellent ionic conductivity corresponding to the liquid electrolyte using plastic crystals, and has a mechanical strength corresponding to the solid electrolyte by introducing a polymer crosslinked structure.
- the electrolyte manufacturing method of the present invention does not necessarily require a solvent, so the drying process can be omitted, and thus there is a simple manufacturing process.
- Such electrolytes have high ionic conductivity and mechanical strength at the level of solid electrolytes, and thus are suitable for cable-type cells that are easily deformed.
- FIG. 1 is a schematic diagram of a solid electrolyte according to one embodiment.
- Example 2 is a graph showing the ion conductivity of Example 1-2 and Comparative Example 2-5.
- Example 4 is a graph showing the tensile strength of Example 1-2.
- the electrolyte of the present invention includes a plastic crystal matrix electrolyte doped with ionic salts; And a polymer cross-linked structure in which a linear polymer having a weight average molecular weight of 100 to 5000 is chemically bonded to a side chain.
- the electrolyte of the present invention which serves as a medium for transporting lithium ions in the positive and negative electrodes, includes a plastic crystal matrix electrolyte and a polymer crosslinked structure.
- Plastic crystals are compounds in which molecules or ions exhibit rotational disorders, while the center of gravity occupies an aligned position in the crystal lattice structure.
- the rotating phase of plastic crystals usually occurs as a solid-solid transition below the melting point, often forming plastic properties and mechanical fluidity and high conductivity.
- the ionic salts when doped, it shows high ion conductivity and is suitable as an electrolyte for secondary batteries.
- the plastic crystal electrolyte exhibits fluidity, and thus mechanical properties thereof are deteriorated, in order to improve this, in the present invention, a polymer crosslinked structure in which a weight average molecular weight is 100 to 5000 and a linear polymer having one functional group is chemically bonded to a side chain It was.
- FIG. 1 shows a schematic diagram of a solid electrolyte according to one embodiment.
- the polymer crosslinked structure 10 having a three-dimensional structure by chemical bonds between molecular chains forms a crosslinked structure unlike a linear polymer
- the fluidity of the plastic crystal matrix electrolyte is complemented.
- the crosslinking is not easily deformed with respect to heat, the electrolyte of the present invention does not soften even when heat is applied, thereby ensuring thermal stability.
- the polymer crosslinked structure 10 of the present invention has a weight average molecular weight of 100 to 5000 and the linear polymer 20 having one functional group is chemically bonded to the side chain, and lithium ions are moved by a hopping mechanism.
- lithium ions have an effect of facilitating hopping. That is, the chain mobility of the polymer cross-linked structure is improved due to the introduction of the linear polymer 20 having a weight average molecular weight of 100 to 5000, thereby making the movement of ions more smooth, thereby contributing to the improvement of ion conductivity.
- linear polymer 20 having such a weight average molecular weight and having one functional group
- polyethylene glycol methacrylate, polyethylene glycol methyl ether acrylate, polyethylene glycol methyl ether methacrylate, or the like can be used as the linear polymer 20 having such a weight average molecular weight and having one functional group.
- the electrolyte of the present invention includes a plastic crystal matrix electrolyte doped with ionic salts; And a polymer crosslinked structure having a weight average molecular weight of 100 to 5000 and a linear polymer having one functional group chemically bonded to a side chain, and the complex is doped with a monomer having two or more functional groups capable of crosslinking and an ionic salt.
- the monomers may be polymerized to form a crosslinked structure.
- the polymer crosslinked structure formed thereby contributes to the improvement of the mechanical properties of the electrolyte and imparts corresponding mechanical properties to the solid electrolyte.
- the plastic crystal matrix electrolyte is uniformly distributed, the ion conductivity is also excellent.
- the electrolyte of the present invention may be a composite further comprising a linear polymer having no functional group, in this case, due to the higher mobility of the linear polymer chain 30 than the case of the polymer crosslinked structure 10 alone, The flexibility is excellent and the ion conductivity is also relatively high.
- Such linear polymer 30 should be interpreted to include not only linear polymer but also branched polymer.
- Such linear polymers include polyethylene oxide, polypropylene oxide, polyoxymethylene, polydimethylsiloxane, polyacrylonitrile, polymethyl methacrylate, polyvinyl chloride, polyvinylidene fluoride, polyvinylidene fluoride-co-hexa Fluoropropylene, polyethylene imine, polyp-phenylene terephthalamide and the like can be used.
- polymethoxy polyethyleneglycol methacrylate, poly2-methoxy ethyl glycidyl ether, or the like can be used as the branched polymer that can be used in combination.
- the solid electrolyte of the present invention may include 40 to 90% by weight of the ionic salt-doped plastic crystal matrix electrolyte.
- Such a polymer crosslinked structure is preferably a polymerized monomer having two or more functional groups, and the monomer having two or more functional groups is meant to include not only monomers but also oligomers having 2 to 20 repeating units.
- the monomer having two or more functional groups is not limited in its kind, but trimethylolpropane ethoxylate triacrylate, polyethylene glycol dimethacrylate, polyethylene glycol diacrylate, divinylbenzene, polyester dimethacrylate , Divinyl ether, trimethylolpropane, trimethylolpropane trimethacrylate, ethoxylated bisphenol A dimethacrylate, and the like can be used.
- the plastic crystal matrix is not limited in kind, but succinonitrile is preferably used.
- the ionic salts doped in the plastic crystal matrix electrolyte are preferably lithium salts, and lithium bis-trifluoromethanesulfonylimide, lithium bis-perfluoroethylsulfonylimide, lithium tetrafluoroborate, and the like can be used. Can be.
- the effect of the present invention may be more excellent.
- Plastic crystal matrix electrolyte doped with an ionic salt according to the present invention And a weight average molecular weight of 100 to 5000, and a method of preparing an electrolyte including a composite of a polymer crosslinked structure in which a linear polymer having one functional group is chemically bonded to a side chain is as follows.
- a plastic crystal matrix electrolyte doped with ionic salts Monomers having two or more functional groups; And the weight average molecular weight is 100 to 5000, by mixing a linear polymer having one functional group to prepare a solution (step S1).
- a ionic salt, a plastic crystal matrix, a linear polymer having a weight average molecular weight of 100 to 5000 and having one functional group and a monomer having two or more crosslinkable functional groups It is also possible to prepare solutions by mixing.
- the monomer having two or more functional groups capable of crosslinking is meant to include not only monomers but also oligomers having 2 to 20 repeating units, and the aforementioned monomers can be used.
- the above-mentioned plastic crystalline matrix electrolyte and ionic salt can also be used.
- the ionic salt may use a concentration of 0.1 to 3 moles relative to the plastic crystal matrix.
- a solvent may be added at the time of mixing, but the solvent is not necessarily essential. However, when a solvent is used, a drying step for removing the solvent is additionally required. In addition, a photoinitiator such as benzoin may be selectively added for polymerization of the monomer.
- the mixed solution may further include a linear polymer having no functional group. Since these linear polymers do not have functional groups, they do not participate in the polymerization and thus do not bind with the crosslinked structure.
- a solid electrolyte is prepared by polymerizing monomers having two or more functional groups in the solution (step S2).
- polymerization is not specifically limited, The method of superposing
- the solid electrolyte of the present invention described above may be used in an electrochemical device including a positive electrode and a negative electrode.
- the electrochemical device of the present invention includes 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.
- the solid electrolyte of the present invention is manufactured into a lithium secondary battery by injecting an electrode structure composed of a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode.
- the positive electrode, the negative electrode, and the separator constituting the electrode structure all those conventionally used for manufacturing a lithium secondary battery may be used.
- the electrolyte for a lithium secondary battery of the present invention is a solid electrolyte, the separator can be replaced.
- the positive electrode and the negative electrode are composed of a current collector and an active material.
- sulfides, selenides and halides may also be used.
- a carbon material lithium metal, silicon, tin, or the like, which can normally occlude and release lithium ions, may be used, and metal oxides such as TiO 2 and SnO 2 having a potential for lithium of less than 2V may be used.
- a carbon material may be used, and as the carbon material, both low crystalline carbon and high crystalline carbon may be used.
- Soft crystalline carbon and hard carbon are typical low crystalline carbon, and high crystalline carbon is natural graphite, Kish graphite, pyrolytic carbon, liquid crystal pitch-based carbon fiber.
- High temperature calcined carbon such as (mesophase pitch based carbon fiber), meso-carbon microbeads, Mesophase pitches and petroleum or coal tar pitch derived cokes.
- the negative electrode may include a binder, and the binder may include vinylidene fluoride-hexafluoropropylene copolymer (PVDF-co-HFP), polyvinylidene fluoride, polyacrylonitrile, Various kinds of binder polymers, such as polymethylmethacrylate, may be used.
- porous polymer films conventionally used as separators for example, polyolefins such as ethylene homopolymer, propylene homopolymer, ethylene / butene copolymer, ethylene / hexene copolymer and ethylene / methacrylate copolymer, etc.
- the porous polymer film made of the polymer may be used alone or by laminating them, or a conventional porous nonwoven fabric, for example, a non-woven fabric made of high melting point glass fiber, polyethylene terephthalate fiber, or the like may be used. It is not.
- the external shape of the lithium secondary battery of the present invention is not particularly limited, but may be cylindrical, square, pouch type, or coin type using a can. In addition, it may be a cable type lithium secondary battery having a structure such as a linear wire.
- PEGDMA polyethylene glycol dimethacrylate
- Lithium bis-trifluoromethan sulfonylimide was added to the ethylene oxide unit of PEGDMA in an amount of 1/8 in molar ratio and then mixed to mix uniformly with each other.
- a mixture was prepared by adding 3% by weight of benzoin, an ultraviolet (UV) initiator, to PEGDMA.
- PEGDMA polyethylene glycol dimethacrylate having a weight average molecular weight of 400
- Lithium bis-trifluoromethan sulfonylimide was added to the ethylene oxide units of PEO and PEGDMA in an amount of 1/8 in molar ratio and then mixed to mix uniformly.
- a mixture was prepared by adding 3% by weight of benzoin, an ultraviolet (UV) initiator, to PEGDMA.
- Comparative Examples 4 and 5 were prepared in the same manner as in Comparative Example 3 by varying the mixing ratio.
- the mechanical properties are greatly improved compared to the pure crystal matrix, so that there is less concern about short circuit and disconnection even when a force is applied to the battery from the outside.
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Abstract
Description
Claims (22)
- 이온성염이 도핑된 플라스틱 크리스탈 매트릭스 전해질; 및 중량평균분자량이 100 ~ 5000이며 1개의 관능기를 갖는 선형 고분자가 사이드 체인으로 화학결합된 고분자 가교구조체의 복합체를 포함하는 전기화학소자용 고체 전해질.
- 제 1항에 있어서,상기 복합체는 관능기를 갖지 않는 선형 고분자를 더 포함하는 복합체인 것을 특징으로 하는 전기화학소자용 고체 전해질.
- 제 1항에 있어서,상기 전기화학소자용 고체 전해질은 이온성염이 도핑된 플라스틱 크리스탈 매트릭스 전해질 40 내지 90 중량%를 포함하는 것을 특징으로 하는 전기화학소자용 고체 전해질.
- 제 1항에 있어서,상기 플라스틱 크리스탈 매트릭스 전해질은 숙시노니트릴을 포함하는 것을 특징으로 하는 전기화학소자용 고체 전해질.
- 제 1항에 있어서,상기 이온성염은 리튬염인 것을 특징으로 하는 전기화학소자용 고체 전해질.
- 제 5항에 있어서,상기 리튬염은 리튬 비스-트리플루오로메탄설포닐이미드, 리튬 비스-퍼플루오로에틸설포닐이미드 및 리튬 테트라플루오로보레이트 중에서 선택된 1종의 화합물 또는 2종 이상의 혼합물인 것을 특징으로 하는 전기화학소자용 고체 전해질.
- 제 1항에 있어서,상기 중량평균분자량이 100 ~ 5000이며, 1개의 관능기를 갖는 선형 고분자는 폴리에틸렌 글리콜 메타크릴레이트, 폴리에틸렌 글리콜 아크릴레이트, 폴리에틸렌 글리콜 메틸에테르아크릴레이트, 폴리에틸렌 글리콜 메틸에테르메타크릴레이트 중에서 선택된 1종의 화합물 또는 2종 이상의 혼합물인 것을 특징으로 하는 전기화학소자용 고체 전해질.
- 제 1항에 있어서,상기 고분자 가교구조체는 2개 이상의 관능기를 갖는 단량체가 중합된 것을 특징으로 하는 전기화학소자용 고체 전해질.
- 제 8항에 있어서,상기 2개 이상의 관능기를 갖는 단량체는 트리메틸올프로판 에톡실레이트 트리아크릴레이트, 폴리에틸렌 글리콜 디메타크릴레이트, 폴리에틸렌 글리콜 디아크릴레이트, 디비닐벤젠, 폴리에스터 디메타크릴레이트, 디비닐에테르, 트리메틸올프로판, 트리메틸올프로판 트리메타크릴레이트 및 에톡실레이티드 비스 페놀 A 디메타크릴레이트 중에서 선택된 1종의 단량체 또는 2종 이상의 혼합물인 것을 특징으로 하는 전기화학소자용 고체 전해질.
- 제 2항에 있어서,상기 관능기를 갖지 않는 선형 고분자는 폴리에틸렌옥사이드, 폴리프로필렌 옥사이드, 폴리옥시메틸렌, 폴리디메틸실록산, 폴리아크릴로니트릴, 폴리메틸메타크릴레이트, 폴리비닐클로라이드, 폴리비닐리덴 플루오라이드, 폴리비닐리덴플루오라이드-코-헥사플로로프로필렌, 폴리에틸렌이민, 폴리p-페닐렌 테레프탈아미드, 폴리메톡시 폴리에틸렌글리콜메타크릴레이트 및 폴리2-메톡시 에틸 글리시딜 에테르 중에서 선택된 1종의 화합물 또는 2종 이상의 혼합물인 것을 특징으로 하는 전기화학소자용 고체 전해질.
- 제 2항에 있어서,상기 중량평균분자량이 100 ~ 5000이며, 1개의 관능기를 갖는 선형 고분자가 사이드 체인으로 화학결합된 고분자 가교구조체는 폴리에틸렌 글리콜 메타크릴레이트이 화학결합된 폴리에틸렌 글리콜 디메타크릴레이트이며, 상기 관능기를 갖지 않는 선형 고분자는 폴리에틸렌옥사이드인 것을 특징으로 하는 전기화학소자용 고체 전해질.
- (S1) 이온성염이 도핑된 플라스틱 크리스탈 매트릭스 전해질; 2개 이상의 관능기를 갖는 단량체; 및 중량평균분자량이 100 ~ 5000이며 1개의 관능기를 갖는 선형 고분자를 혼합하여 용액을 제조하는 단계; 및(S2) 상기 용액 내의 2개 이상의 관능기를 갖는 단량체를 중합시키는 단계를 포함하는 제 1항 내지 제 11항 중에서 선택된 어느 한 항의 전기화학소자용 고체 전해질의 제조방법.
- 제 12항에 있어서,상기 (S1) 단계의 용액은 관능기를 갖지 않는 선형 고분자를 더 포함하는 것을 특징으로 하는 전기화학소자용 고체 전해질의 제조방법.
- 제 12항에 있어서,상기 플라스틱 크리스탈 매트릭스 전해질은 숙시노니트릴을 포함하는 것을 특징으로 하는 전기화학소자용 고체 전해질의 제조방법.
- 제 12항에 있어서,상기 이온성염은 플라스틱 크리스탈 매트릭스 전해질 대비 0.1 내지 3 몰농도인 것을 특징으로 하는 전기화학소자용 고체 전해질의 제조방법.
- 제 12항에 있어서,상기 이온성염은 리튬염인 것을 특징으로 하는 전기화학소자용 고체 전해질의 제조방법.
- 제 16항에 있어서,상기 리튬염은 리튬 비스-트리플루오로메탄설포닐이미드, 리튬 비스-퍼플루오로에틸설포닐이미드 및 리튬 테트라플루오로보레이트 중에서 선택된 1종의 화합물 또는 2종 이상의 혼합물인 것을 특징으로 하는 전기화학소자용 고체 전해질의 제조방법.
- 제 12항에 있어서,상기 2개 이상의 관능기를 갖는 단량체는 트리메틸올프로판 에톡실레이트 트리아크릴레이트, 폴리에틸렌 글리콜 디메타크릴레이트, 폴리에틸렌 글리콜 디아크릴레이트, 디비닐벤젠, 폴리에스터 디메타크릴레이트, 디비닐에테르, 트리메틸올프로판, 트리메틸올프로판 트리메타크릴레이트 및 에톡실레이티드 비스 페놀 A 디메타크릴레이트 중에서 선택된 1종의 단량체 또는 2종 이상의 혼합물인 것을 특징으로 하는 전기화학소자용 고체 전해질의 제조방법.
- 제 12항에 있어서,상기 중량평균분자량이 100 ~ 5000이며, 1개의 관능기를 갖는 선형 고분자는 폴리에틸렌 글리콜 메타크릴레이트, 폴리에틸렌 글리콜 아크릴레이트, 폴리에틸렌 글리콜 메틸에테르아크릴레이트, 폴리에틸렌 글리콜 메틸에테르메타크릴레이트 중에서 선택된 1종의 화합물 또는 2종 이상의 혼합물인 것을 특징으로 하는 전기화학소자용 고체 전해질의 제조방법.
- 제 13항에 있어서,상기 관능기를 갖지 않는 선형 고분자는 폴리에틸렌옥사이드, 폴리프로필렌 옥사이드, 폴리옥시메틸렌, 폴리디메틸실록산, 폴리아크릴로니트릴, 폴리메틸메타크릴레이트, 폴리비닐클로라이드, 폴리비닐리덴 플루오라이드, 폴리비닐리덴플루오라이드-코-헥사플로로프로필렌, 폴리에틸렌이민, 폴리p-페닐렌 테레프탈아미드, 폴리메톡시 폴리에틸렌글리콜메타크릴레이트 및 폴리2-메톡시 에틸 글리시딜 에테르 중에서 선택된 1종의 화합물 또는 2종 이상의 혼합물인 것을 특징으로 하는 전기화학소자용 고체 전해질의 제조방법.
- 양극, 음극 및 전해질을 포함하는 전기화학소자에 있어서,상기 전해질은 제 1항 내지 제 11항 중 어느 한 항의 고체 전해질인 것을 특징으로 하는 전기화학소자.
- 제 21항에 있어서,상기 전기화학소자는 리튬 이차전지인 것을 특징으로 하는 전기화학소자.
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| JP2013550379A JP5653539B2 (ja) | 2011-01-20 | 2011-10-26 | 電気化学素子用電解質、その製造方法、及びそれを備える電気化学素子 |
| CN201180065551.0A CN103329332B (zh) | 2011-01-20 | 2011-10-26 | 电化学装置用电解质、制备所述电解质的方法以及包含所述电解质的电化学装置 |
| US13/936,967 US8852815B2 (en) | 2011-01-20 | 2013-07-08 | Electrolyte for electrochemical device, method for preparing the same and electrochemical device including the same |
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| KR101311494B1 (ko) * | 2010-06-14 | 2013-09-25 | 주식회사 엘지화학 | 전기화학소자용 전해질, 그 제조방법 및 이를 구비한 전기화학소자 |
-
2011
- 2011-01-20 KR KR1020110006006A patent/KR101351897B1/ko active Active
- 2011-10-26 JP JP2013550379A patent/JP5653539B2/ja active Active
- 2011-10-26 CN CN201180065551.0A patent/CN103329332B/zh active Active
- 2011-10-26 EP EP11856563.9A patent/EP2667443B1/en active Active
- 2011-10-26 WO PCT/KR2011/008023 patent/WO2012099321A1/ko not_active Ceased
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2013
- 2013-07-08 US US13/936,967 patent/US8852815B2/en active Active
Patent Citations (2)
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| KR20080033421A (ko) | 2005-07-29 | 2008-04-16 | 내셔날 리서치 카운실 오브 캐나다 | 리튬계 전기화학 장치 내의 플라스틱 결정 전해질 |
| US20100119951A1 (en) * | 2007-05-11 | 2010-05-13 | Ali Abouimrane | Plastic Crystal Electrolyte with a Broad Potential Window |
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| FAN, LI-ZHEN: "Enhanced ionic conductivities in composite polymer electrolytes by using succinonitrile as a plasticizer", SOLID STATE IONICS, vol. 179, no. 27-32, 2008, pages 1772 - 1775, XP023521381 * |
| MACFARLANE, D.R.: "Plastic Crystal Electrolyte Materials: New Perspectives on Solid State Ionics", ADV. MATER., vol. 13, no. 12-13, July 2001 (2001-07-01), pages 957 - 966, XP001130152 * |
| See also references of EP2667443A4 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10707527B2 (en) | 2015-02-17 | 2020-07-07 | Jenax Inc. | Gel polymer electrolyte, electrochemical device, and methods thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| US20130295466A1 (en) | 2013-11-07 |
| KR20120084572A (ko) | 2012-07-30 |
| JP2014504788A (ja) | 2014-02-24 |
| CN103329332A (zh) | 2013-09-25 |
| EP2667443A4 (en) | 2014-10-29 |
| US8852815B2 (en) | 2014-10-07 |
| EP2667443A1 (en) | 2013-11-27 |
| JP5653539B2 (ja) | 2015-01-14 |
| EP2667443B1 (en) | 2016-08-31 |
| CN103329332B (zh) | 2015-11-25 |
| KR101351897B1 (ko) | 2014-01-17 |
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