WO2005116092A1 - 架橋ポリ(メタ)アクリル酸化合物の製造方法 - Google Patents
架橋ポリ(メタ)アクリル酸化合物の製造方法 Download PDFInfo
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- WO2005116092A1 WO2005116092A1 PCT/JP2005/009893 JP2005009893W WO2005116092A1 WO 2005116092 A1 WO2005116092 A1 WO 2005116092A1 JP 2005009893 W JP2005009893 W JP 2005009893W WO 2005116092 A1 WO2005116092 A1 WO 2005116092A1
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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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/137—Electrodes based on electro-active polymers
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/60—Selection of substances as active materials, active masses, active liquids of organic compounds
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/60—Selection of substances as active materials, active masses, active liquids of organic compounds
- H01M4/602—Polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F222/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
- C08F222/10—Esters
- C08F222/1006—Esters of polyhydric alcohols or polyhydric phenols
- C08F222/102—Esters of polyhydric alcohols or polyhydric phenols of dialcohols, e.g. ethylene glycol di(meth)acrylate or 1,4-butanediol dimethacrylate
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
- H01M4/1399—Processes of manufacture of electrodes based on electro-active polymers
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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 a method for producing a crosslinked poly (meth) acrylic acid compound and a method for producing an electrode of a secondary battery using the compound. More particularly, the present invention relates to a method for producing a crosslinked poly (meth) acrylic acid-troxide conjugate having excellent solvent stability, which is used as an electrode material for a secondary battery having a high energy density and a large capacity.
- lithium ion secondary batteries are used in various electronic devices as high-capacity secondary batteries with high energy density and excellent stability.
- Such a lithium ion secondary battery generally uses a lithium-containing transition metal oxide for the positive electrode and carbon for the negative electrode as active materials, and utilizes the insertion and desorption reactions of lithium ions into and from these active materials. Charging and discharging.
- a solvent constituting an electrolytic solution for transporting charge carriers between the negative electrode and the positive electrode for example, ethylene carbonate, propylene carbonate, dimethyl carbonate, jetinole carbonate, etino Organic solvents such as remethinole carbonate, y-butyrolataton, tetrahydrofuran, dioxofuran, sulfolane, dimethylformamide, dimethylacetamide, N-methyl-2-pyrrolidone, alone or as a mixture of two or more Used.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2002-151084
- the present invention relates to a method for producing a crosslinked poly (meth) acrylic acid conjugate, in particular, a crosslinked poly (meth) acrylic acid-troxide conjugate which is a radical conjugate excellent in solvent stability. And a method for producing an electrode of a secondary battery using the compound.
- the present invention provides a compound represented by the general formula (1):
- n Z 1 represents a hydrogen atom and Z or an oxygen atom having one unpaired electron
- R represents a hydrogen atom or a methyl group
- n represents 5 to:
- a polymerization step of polymerizing a (meth) acrylic acid compound represented by the formula (1) in the presence of a crosslinking agent A method for producing a crosslinked poly (meth) acrylic acid compound, characterized in that:
- the present invention is a method for producing an electrode of a secondary battery, comprising: a coating step of forming a crosslinked poly (meth) acrylic acid compound into a coating; and an application step of applying the coating to a current collector.
- the cross-linked poly (meth) acrylic acid compound is a cross-linked poly (meth) acrylic acid-troxide conjugate produced by the method for producing the cross-linked poly (meth) acrylic acid compound. This is a method for manufacturing a battery electrode.
- the method for producing a crosslinked poly (meth) acrylic acid compound of the present invention is represented by the general formula (2).
- the crosslinked poly (meth) acrylic acid conjugate is obtained by cross-linking the poly (meth) acrylic acid conjugate represented by the general formula (1).
- N Z 1 in the general formula (1) represents a hydrogen atom and Z or an oxygen atom having one unpaired electron.
- n Z 1 in the general formula (1) represents a hydrogen atom and Z or an oxygen atom having one unpaired electron”.
- Z 1 is a all n a hydrogen atom
- a case Z 1 is an oxygen atom having one every n unpaired electrons
- repeating units Z 1 is a hydrogen atom ( a) and a repeating unit (b) in which Z 1 is an oxygen atom having one unpaired electron, and the total number of both repeating units is n.
- the repeating unit (a) and the repeating unit (b) may be bonded alternately or may constitute a block copolymer.
- the “oxygen atom having one unpaired electron” means oxygen having an unpaired electron which a free radical has on an atom.
- R represents a hydrogen atom or a methyl group
- n represents an integer of 5 to 1000000
- N is preferably an integer of 10 to 500,000.
- the polymerization step comprises polymerizing the (meth) acrylic acid compound represented by the general formula (2) in the presence of a crosslinking agent.
- the polymerization step is considered to be capable of performing both the polymerization reaction and the cross-linking reaction by performing the polymerization in the presence of the cross-linking agent. Can be obtained.
- the crosslinking agent and the polymerization step will be described later.
- R in the general formula (2) represents the same group as R in the general formula (1).
- Z 2 in the general formula (2) represents a hydrogen atom when Z 1 in the general formula (1) is a hydrogen atom, and represents hydrogen when Z 1 is an oxygen atom having one unpaired electron. Indicates an oxygen atom having one atom or one unpaired electron.
- the method for producing a crosslinked poly (meth) acrylic acid compound of the present invention includes the above-mentioned polymerization step.
- the method for producing a crosslinked poly (meth) acrylic acid conjugate of the present invention is characterized in that, when Z 1 in the general formula (1) is the same as Z 2 in the general formula (2), By polymerizing the (meth) acrylic acid compound represented by the general formula (2) in the presence of a crosslinking agent, the poly (meth) acrylic acid conjugate represented by the general formula (1) is crosslinked. To produce a crosslinked poly (meth) acrylic acid conjugate.
- a (meth) atalylic acid compound represented by the general formula (2) (wherein Z 2 is an oxygen atom having one unpaired electron) (hereinafter referred to as “(meth) acrylic acid-troxide conjugated compound”) Is not particularly limited, and includes, for example, 2,2,6,6-tetramethyl-14-piberidyl (meth) acrylic acid.
- the one obtained by a known method such as -troxidani-dori can be used.
- the method for producing a crosslinked poly (meth) acrylic acid compound of the present invention further comprises an oxygen atom or a hydrogen atom in which n Z 1 in the general formula (1) has one unpaired electron. And when oxygen is an oxygen atom having one unpaired electron and Z 2 in the general formula (2) is a hydrogen atom, represented by the general formula (2) (where Z 2 is a hydrogen atom) ( After the polymerization step of polymerizing a (meth) acrylic acid conjugate (hereinafter sometimes referred to as “(meth) acrylic acid imino compound”) in the presence of a cross-linking agent, a nitroxide-toloxide is further added.
- poly (meth) acrylic acid conjugate (hereinafter referred to as "poly (meth) acrylic acid-troxide compound") In which there) to produce a formed by crosslinked crosslinked poly (meth) ⁇ click Lil Sani ⁇ thereof.
- the -troxidation step it is preferable that the -troxidation of a hydrogen atom is completely performed.However, it is preferable that the -troxidation step has both a hydrogen atom incompletely subjected to nitroxidation and an oxygen atom having one unpaired electron. May be as follows. N pieces of Z 1 in the general formula (1) is - when subjected to complete the door opening Kishido reduction, will only oxygen atoms having one unpaired electron, when performing the incomplete Nitoroki Shidi spoon, hydrogen It becomes an oxygen atom having one atom and one unpaired electron.
- the conjugate obtained through the -troxidation step is referred to with the term ⁇ nitroxide compound '' for convenience, and indicates only that it has an oxygen atom having one unpaired electron and also has a hydrogen atom. Power that may be omitted in some cases Unless otherwise specified, this is a concept that may include hydrogen atoms remaining due to incomplete nitroxidation.
- the poly (meth) acrylic acid conjugate represented by the general formula (1) is combined with a poly (meth) acrylic acid imino compound represented by the following general formula (la) and a compound represented by the general formula ( lb), and is a concept composed of a poly (meth) atalylic acid nitroxide compound represented by lb).
- the (meth) acrylic acid conjugate represented by the general formula (2) is represented by a (meth) acrylic acid imino compound represented by the following general formula (2a) and a general formula (2b) This is a concept composed of (meth) acrylic acid-troxide conjugate.
- the method for producing a crosslinked poly (meth) acrylic acid compound of the present invention comprises the following reaction It is represented in the figure.
- the poly (meth) acrylic acid conjugate comprises n units of the general formula (1) Is a poly (meth) acrylic acid imino compound in which Z 1 is a hydrogen atom, and the (meth) acrylic acid conjugated compound is a (meth) acrylic acid in which Z 2 in the general formula (2) is a hydrogen atom. It is an imino compound.
- a method for producing a crosslinked poly (meth) acrylic acid imino conjugate comprising producing a crosslinked poly (meth) acrylic acid imino compound.
- the poly (meth) acrylic acid conjugate comprises an oxygen atom in which n Z 1 in the general formula (1) has one unpaired electron, or an oxygen atom having a hydrogen atom and one unpaired electron.
- the (meth) acrylic acid conjugate is a (meth) acrylic acid imino compound wherein Z 2 in the general formula (2) is a hydrogen atom,
- the polymerization step is for producing a cross-linked poly (meth) acrylic acid imino conjugate obtained by crosslinking the poly (meth) acrylic acid imino compound represented by the general formula (la),
- the method for producing a cross-linked poly (meth) acrylic acid compound further includes a -troxidation step of -troxidizing the cross-linked poly (meth) acrylic acid compound.
- the first embodiment which also includes the -troxidation step, comprises: (I) polymerizing the (meth) acrylic acid imino compound represented by the general formula (2a) in the presence of a crosslinking agent.
- the method comprises the step of producing a (meth) acrylic acid-troxide conjugate, wherein the crosslinked poly (meth) acrylic acid-troxide conjugate is represented by the general formula (lb):
- a poly (meth) acrylic acid nitroxide conjugate is represented by a general formula (lb) for convenience, but since it has undergone a nitroxide sulfide step, the nitroxide conversion is incomplete as described above. May also have a hydrogen atom remaining after the reaction.
- the crosslinked poly (meth) acrylic acid nitroxide conjugate is obtained by cross-linking the poly (meth) acrylic acid-troxide compound. May also have a hydrogen atom remaining.
- R represents a hydrogen atom or a methyl group.
- the (meth) acrylic acid imino compound represented by the general formula (2a) includes 2, 2, 6 , 6-Tetramethyl-4-piberidyl (meth) acrylate, a commercially available product can be used.
- acrylic acid and methacrylic acid are referred to as (meth) acrylic acid, and acrylate and methacrylate are referred to as (meth) atalylate.
- the crosslinking agent used in the present invention is not particularly limited as long as it has a plurality of polymerizable unsaturated groups in the molecule.
- a (meth) acrylic acid-based polyfunctional compound and an aryl ether-based polyfunctional compound are used.
- Functional compounds and vinyl-based polyfunctional compounds are used.
- (Meth) acrylic acid-based polyfunctional compounds include, for example, ethylene glycol di (meth) atalylate, ethylene glycol di (meth) atalylate, polyethylene glycol di (meth) atalylate, 1,3-propanediol di ( 1,2-butanediol di (meth) atalylate, 1,4-butanediol di (meth) atalylate, 1,5 pentanediol di (meth) atalylate, 1,6 hexanediol di ( (Meta) acrylate, 1,7 heptanediol di (meth) acrylate, 1,8 octanediol di (meth) acrylate, 1,9-nonanediol di (meth) acrylate, 1, 10-decane diol ( (Meta) acrylate, trimethylolpropanetri (meth) acrylate, glycerin di (meth)
- Examples of the aryl ether polyfunctional compound include diethylene glycol diaryl ether and dibutylene glycol diaryl ether.
- Examples of the bur polyfunctional compound include dibutyl benzene.
- (meth) acrylic acid-based polyfunctional compounds are preferably used, and in particular, ethylene glycol di (meth) atarylate, 1,3 butanediol di (meth) ataryl Rate and 1,4 butanediol di (meth) acrylate are preferably used.
- These cross-linking agents can be used alone or in combination.
- the amount of the cross-linking agent used is in accordance with the viewpoint and the amount of the cross-linked poly (meth) acrylic acid-troxide conjugate finally obtained exhibiting sufficient solvent stability by appropriate cross-linking. From the viewpoint of obtaining the effect, the ratio of 0.0001 to 0.25 mol per 1 mol of the (meth) acrylic acid imino compound is more preferable, and the ratio is more preferably 0.0005-0.1 mol, More preferably, it is 0.0001-0.05 mol.
- the method of polymerizing the imino (meth) acrylate compound in the presence of the crosslinking agent is not particularly limited, and examples thereof include a stirrer, a thermometer, and a nitrogen gas.
- a predetermined amount of a (meth) acrylic acid imino compound, a cross-linking agent, and an inert solvent are charged into a reactor equipped with an inlet pipe and a cooling pipe, and the mixture is deoxygenated with nitrogen gas.
- a method of adding a polymerization initiator is exemplified.
- inert solvent examples include aromatic hydrocarbon solvents such as benzene, toluene, and xylene, and ether solvents such as getyl ether and tetrahydrofuran.
- the amount of the inert solvent used is from 50 to 2,000 parts by weight based on 100 parts by weight of the (meth) acrylic acid imino compound from the viewpoint of smoothly proceeding the reaction and obtaining an effect commensurate with the used amount. Parts are preferred.
- the polymerization initiator is not particularly limited, and for example, polymerization initiators such as benzoyl peroxide, lauroyl baroxide, peroxide of tamenodide, peroxide of tertiary butylhydride, and potassium persulfate.
- polymerization initiators such as benzoyl peroxide, lauroyl baroxide, peroxide of tamenodide, peroxide of tertiary butylhydride, and potassium persulfate.
- Azo-based polymerization initiators such as ⁇ , a'-azobisisobutyl mouth-tolyl, 2,2'-azobis-2,4-dimethylvaleronitrile, dimethyl-2,2'-azobisisobutyrate Ammox-ferrous sulfate Z-ammonium persulfate, ethanolanolamine Z potassium persulfate, sodium bromate Z sulfur dioxide, etc .; a redox polymerization initiator; Grignard reagent (n-butylmagnesium bromide, isobutylmagnesium bromide) , T-butynolemagnesium bromide, n-butynolemagnesium chloride, isobutylmagnesium chloride, t-butylmer Neshi um chloride and the like), Arukirurichi ⁇ beam (n- butyl lithium, t chromatography butyl lithium, 1, 1 Jifue - Anion type polymerization initi
- the amount of the polymerization initiator used varies depending on the type of the polymerization initiator used and the reaction temperature. Usually, the amount is 0.005 to 5 parts by weight based on 100 parts by weight of the imino (meth) acrylate compound.
- additives such as a chain transfer agent such as isopropyl alcohol and a polymerization terminator such as methanol may be appropriately added.
- the reaction temperature is preferably 20 to 100 ° C, more preferably -10 to 80 ° C.
- the reaction time varies depending on the reaction temperature and cannot be specified unconditionally, but is usually 2 to: LO time
- the crosslinked poly (meth) acrylic acid compound which is a reaction product obtained by the above-mentioned molding, is prepared by mixing the reaction solution with a solvent such as an aliphatic hydrocarbon such as hexane and the like. Imino acrylate After the compound is precipitated, it can be isolated by filtration or the like. Furthermore, unreacted substances and the like can be removed using hexane, methanol, and the like, washed, and dried to be purified.
- the above-mentioned method of polymerizing the imino (meth) acrylate compound in the presence of the crosslinking agent can be usually carried out by a solution polymerization method.
- the solution polymerization method uses a solvent having a relatively high solubility of the imino (meth) acrylate compound as the inert solvent.
- a suspension polymerization method and an emulsion polymerization method can be suitably used as the polymerization method because of the ease of separation of the reaction product.
- suspension polymerization method for example, a predetermined amount of an imino (meth) acrylate compound, a crosslinking agent, and an oil
- a radical polymerization initiator mixed with an inert hydrocarbon solvent and a surfactant are mixed and dispersed in inert water, then deoxygenated with nitrogen gas, and heated with stirring.
- Examples of the inert hydrocarbon solvent used in the suspension polymerization method include aromatic hydrocarbon solvents such as benzene, toluene, and xylene; n-hexane, n-heptane, and rig-mouth. And acyclic saturated hydrocarbon solvents such as cyclopentane, methylcyclopentane, cyclohexane and methylcyclohexane, and halogenated hydrocarbon solvents such as dichloromethane, chloroform and dichloroethane. And the like.
- aromatic hydrocarbon solvents such as benzene, toluene, and xylene
- n-hexane n-heptane
- rig-mouth rig-mouth
- acyclic saturated hydrocarbon solvents such as cyclopentane, methylcyclopentane, cyclohexane and methylcyclohexane
- halogenated hydrocarbon solvents such as dichloromethane, chlor
- the amount of the inert hydrocarbon-based solvent used is not only from the viewpoint of sufficiently dissolving the (meth) acrylic acid imino compound to allow the polymerization reaction to proceed smoothly, and also from the viewpoint of obtaining the effect corresponding to the amount used, by (meth) 50 to 300 parts by weight, preferably 100 to 200 parts by weight, per 100 parts by weight of the imino acrylate compound! / ⁇ .
- the amount of the water used is 200 to 1500 parts by weight per 100 parts by weight of the imino (meth) acrylate compound. 300 to 1000 parts by weight are more preferred.
- the oil-soluble radical polymerization initiator in the suspension polymerization method is not particularly limited, and examples thereof include benzoyl peroxide, di-tert-butyl peroxide, lauroyl peroxide, diisopropyl propyl peroxide carbonate, and the like.
- Peroxide polymerization initiators such as dicyclohexylperoxydicarbonate; ⁇ , ⁇ '-azobisisobutymouth-tolyl, 2,2, -azobis-2,4-dimethylvale-tolyl, dimethyl-2,2 Azo-based polymerization initiators such as, -azobisisobutyrate; redox-based polymerization initiators such as benzoyl peroxide-dimethylayurin, di-tert-butyl Z-dimethylayurin, lauroyl baroxide Z-dimethyla-line, etc.
- azo-based polymerization initiators such as ⁇ , ⁇ , -azobisisobutyl-tolyl which are inexpensive and easy to handle are preferably used.
- the amount of the oil-soluble radical polymerization initiator used varies depending on the type of the oil-soluble radical polymerization initiator used and the reaction temperature, but is usually 0.005 to 5 parts by weight based on 100 parts by weight of the (meth) acrylic acid imino compound. Department.
- additives such as a chain transfer agent such as isopropyl alcohol and a polymerization terminator such as methanol may be appropriately added.
- any of an aionic surfactant, a cationic surfactant, a non-ionic surfactant, and an amphoteric surfactant may be used. Can be.
- anionic surfactants include sodium fatty acid, potassium fatty acid, sodium alkyl sulfate, sodium alkyl benzene sulfonate, sodium alkane sulfonate, sodium alkyl phosphate, acyloyl methyl taurate, sodium ⁇ -methyl-pyramidopropionate, Sodium monoalkyl biphenyl ether disulfonate, sodium naphthalene sulfonate Formalin condensate, sodium acyl glutamate, sodium polyoxyethylene alkyl ether sulfate, sodium polyoxyethylene alkyl ether ether alkyl benzene sulfonate, polyoxyethylene alkyl ether methyl carboxylate And sodium polyoxyethylene alkyl ether ethanesulfonate.
- cationic surfactant monoalkyltrimethylammonium-dimethylmethosulfate Cationized cellulose, alkyltrimethylammonium-dimethyl chloride, distearyldimethylammonium-dimethylchloride, dialkyldimethylammonium-dimethylchloride, dialkyldimethylbenzylammonium-dimethylchloride, alkylpyridyl-dimethylchloride and the like.
- non-ionic surfactant examples include fatty acid monodaliseride, sorbitan fatty acid partial ester, polyoxyethylene alkyl ether, polyoxyethylene alkylphenyl ether, polyoxyethylene fatty acid monodaliseride, and polyoxyethylene sorbitol fatty acid moiety.
- Ester polyoxyethylene sorbitan fatty acid partial ester, polyoxyethylene lanolin alcohol ether, polyethylene glycol fatty acid monoester, polyethylene glycol fatty acid diester, polyoxyethylene fatty amine, polyglycerin fatty acid partial ester, bis (2-hydroxyethyl) alkylamine, Alkyl dimethyl amine oxide, fatty acid alkylolamide, ⁇ -methoxy polyoxyethylene ⁇ -alkyl ether, polyoxy Polyoxypropylene Proc copolymers, poly O alkoxy polyoxypropylene alkyl ethers, polyoxyethylene ⁇ isethionate les glycol, sugar fatty acid partial esters, and the like.
- amphoteric surfactants include ⁇ acylamidopropyl- ⁇ , ⁇ ⁇ ⁇ ⁇ dimethylammoniobetaine, ⁇ acylamidopropyl ⁇ ,, ⁇ , monodimethyl ⁇ , - ⁇ -hydroxypropylammo-sulfobetaine, ⁇
- Examples of the amphoteric surfactants include ⁇ acylamidopropyl- ⁇ , ⁇ ⁇ ⁇ ⁇ dimethylammoniobetaine, ⁇ acylamidopropyl ⁇ ,, ⁇ , monodimethyl ⁇ , - ⁇ -hydroxypropylammo-sulfobetaine, ⁇
- Examples of the amphoteric surfactants include ⁇ acylamidopropyl- ⁇ , ⁇ ⁇ ⁇ ⁇ dimethylammoniobetaine, ⁇ acylamidopropyl ⁇ ,, ⁇ , monodimethyl ⁇ , - ⁇ -hydroxypropylammo-sulfobetaine, ⁇
- Examples include acylamidoe
- sodium alkylbenzenesulfonate and sodium polyoxyethylenealkylphenyletheralkylbenzenebenzenesulfonate are preferred from the viewpoint of industrial availability, low cost, and stability of the quality of the obtained compound. It is preferably used, and among them, sodium dodecylbenzenesulfonate and sodium polyoxyethylen-nor-ether ether dodecylbenzenesulfonate are preferably used.
- the amount of the surfactant used is commensurate with the viewpoint and the amount used in which the reaction proceeds smoothly.
- the amount of the water is preferably 0.05 to 1 part by weight with respect to 100 parts by weight of the water, and more preferably 0.1 to 0.4 part by weight.
- the reaction temperature is preferably from 30 to 100 ° C, more preferably from 40 to 80 ° C.
- the reaction time varies depending on the reaction temperature, it cannot be unconditionally determined, but is usually 0.5 to: L0 hour.
- the crosslinked poly (meth) acrylic acid compound which is a reaction product obtained by force, exists in the form of particles in the reaction solution, and thus can be isolated by filtering the reaction solution. Further, it can be purified by removing unreacted substances and the like using water, hexane and the like, washing and drying.
- emulsion polymerization method which is another polymerization method according to the first embodiment of the present invention
- a predetermined amount is measured by using a reactor equipped with a stirrer, a thermometer, a nitrogen gas introduction pipe, and a cooling pipe.
- the imino (meth) acrylate compound, cross-linking agent, and surfactant are mixed and dispersed in water, which is an inert solvent, and then deoxygenated with nitrogen gas, and a water-soluble radical polymerization initiator is added. And heating under stirring.
- the water-soluble radical polymerization initiator in the emulsion polymerization method is not particularly limited, and examples thereof include peroxide-based polymerization initiators such as ammonium persulfate, sodium persulfate, and potassium persulfate, and ferrous sulfate.
- peroxide-based polymerization initiators such as ammonium persulfate, sodium persulfate, and potassium persulfate, and ferrous sulfate.
- Redox-based polymerization initiators such as ammonium Zammonium persulfate, ethanolamine Z potassium persulfate, and the like.
- a peroxide initiator such as potassium persulfate which is inexpensive and easy to handle is preferably used.
- the type and amount of the surfactant, the amount of the polymerization initiator, the amount of water used as the inert solvent, the reaction temperature and the reaction time are the same as those in the suspension polymerization method. You can apply Chino.
- an inert hydrocarbon solvent similar to that used in the suspension polymerization method may be appropriately added in order to dissolve the imino (meth) acrylate compound.
- An additive such as a chain transfer agent or a polymerization terminator such as methanol may be appropriately added.
- the crosslinked poly (meth) acrylic acid compound which is a reaction product obtained by force, is prepared, for example, by mixing the reaction solution with a large amount of cold water to precipitate the crosslinked poly (meth) acrylic acid compound. After that, it can be isolated by filtration or the like. In addition, water, hexane, methanol, etc. It can be purified by removing unreacted substances and the like, washing and drying.
- the crosslinked poly (meth) acrylic acid-troxide conjugate is obtained by subjecting the crosslinked poly (meth) acrylic acid imino compound obtained as described above to -troxidation. Can be manufactured.
- the method for subjecting the crosslinked poly (meth) acrylic acid compound to -troxidation is not particularly limited.
- a secondary amine having steric hindrance may be converted to an oxidizing agent using an oxidizing agent.
- a known method of producing a compound having a corresponding nitroxide free radical by oxidation and the like can be used. Examples of the operation of this method include the above-mentioned cross-linking poly (meth) acrylic acid imino compound After mixing with an active solvent, a method of reacting under stirring without adding an oxidizing agent may be used.
- Examples of the inert solvent used for the -troxidation include halogenated hydrocarbons such as dichloromethane, chloroform and dichloroethane; and aliphatic -tolyls such as acetonitrile, propio-tolyl, and butyl-tolyl. , Benzonitrile, aromatic-tolyls such as tol-tolyl, alcohols such as methanol, ethanol, n-prononore, iso-prononole, n-butanol, sec-butanol, iso-butanol, tert-butanol and benzene And aromatic hydrocarbons such as toluene and xylene. Of these, halogenated hydrocarbons such as dichloromethane, chloroform and dichloroethane, and alcohols such as methanol and ethanol are preferably used.
- the amount of the inert solvent used in the -troxidation is determined from the viewpoint of smoothly proceeding the reaction and obtaining an effect commensurate with the amount used, from the viewpoint of obtaining an effect commensurate with the amount used. Desirable is 50 to 5000 weight% per 100 weight% of the product, more preferably 100 to 3000 weight%.
- oxidizing agent examples include peroxides such as hydrogen peroxide, formic acid, peracetic acid, perbenzoic acid and perphthalic acid, and halides thereof, silver oxide, lead tetraacetate, hexacyano iron ( III) Oxidation products such as potassium acid and potassium permanganate, and air.
- peroxides such as hydrogen peroxide, formic acid, peracetic acid, perbenzoic acid and perphthalic acid, and halides thereof, silver oxide, lead tetraacetate, hexacyano iron ( III) Oxidation products such as potassium acid and potassium permanganate, and air.
- the amount of the oxidizing agent used is (meth) acrylic acid used in the production of the cross-linked poly (meth) acrylic acid imino compound from the viewpoint of smoothly proceeding the reaction and obtaining an effect commensurate with the amount used.
- the ratio is preferably 1 to 40 mol per 1 mol of the imino compound.
- the polymerization method of the polymerization step in the first embodiment of the present invention which is more preferably 1.5 to 15 mol, is a solution polymerization method, the ratio is 1.5 to 5.0 mol. It is desirable that the ratio be more preferably 1.6 to 3.0 mol.
- a catalyst can be used.
- the catalyst include a catalyst used in a usual -oxidation reaction.
- the catalyst include a compound containing a metal element selected from Group 6 of the Group 18 element periodic table, such as tungsten and molybdenum.
- a metal element selected from Group 6 of the Group 18 element periodic table such as tungsten and molybdenum.
- the catalyst include tungstic acid, phosphorous tungstate, and tungsten.
- the amount of the catalyst to be used is preferably from 0.01 to 100 parts by weight of the cross-linked poly (meth) acrylate imino compound from the viewpoint of smoothly proceeding the reaction and obtaining an effect commensurate with the amount used.
- the polymerization method of the polymerization step in the first embodiment of the present invention is a solution polymerization method, preferably 20 parts by weight is more preferably 0.01 to 10 parts by weight, the crosslinked poly (meth)
- the amount is preferably 0.001 to 0.1 part by weight, more preferably 0.01 to 0.05 part by weight, per 100 parts by weight of the imino acrylate compound.
- the reaction temperature is preferably from 0 to 75 ° C, more preferably from 20 to 50 ° C.
- the reaction after mixing the cross-linked poly (meth) acrylic acid imino compound, the inert solvent and the oxidizing agent, the mixture can be reacted at the above temperature under stirring, but the oxidizing agent is added as described above. It is preferable because the reaction can be easily performed with high yield.
- the reaction time while the oxidizing agent is added is not particularly limited, but is usually 1 to 10 hours, preferably 3 to 6 hours. Further, usually, after the addition of the oxidizing agent, Hold for ⁇ 10 hours to complete the reaction.
- the crosslinked poly (meth) acrylic acid-troxide compound obtained by force can be isolated from the reaction solution by a combination of filtration, drying and the like.
- the crosslinked poly (meth) acrylic acid compound does not necessarily need to be dissolved in an inert solvent, for example, the reaction proceeds easily even in a swollen state.
- the poly (meth) acrylic acid conjugate comprises the general formula (1) in the n Z 1 is an oxygen atom having one unpaired electron, or an oxygen atom having one hydrogen atom and unpaired electrons poly (meth) acrylic acid - a Torokishidi ⁇ product, the ( meth) acrylic Sani ⁇ product, the Z 2 in the general formula (2) is a hydrogen atom (meth) acrylic acid Imino compounds Dressings containing, which may be the general formula (2) in the Z 2 is not It is a (meth) acrylic acid-troxide compound which is an oxygen atom having one counter electron.
- (meth) acrylic acid conjugate may be a compound containing a (meth) acrylic acid imino compound and is a (meth) acrylic acid-troxide compound”
- the (meth) acrylic acid compound may be an aggregate of (meth) acrylic acid-troxide conjugate compound molecules and may also contain a (meth) acrylic acid imino compound molecule.
- the second embodiment has the following general formula (2b):
- a method for producing a cross-linked poly (meth) acrylic acid-troxide conjugate comprising producing a cross-linked poly (meth) acrylic acid-troxide conjugate comprising:
- the (meth) acrylic acid-troxidide conjugate is represented by the general formula (2b) for convenience, but since it has been subjected to the nitroxide ligating step, the nitroxide conversion is not performed as described above. It may have a hydrogen atom that remains after the completion.
- the (meth) acrylic acid-troxide conjugate is not particularly limited, but may be represented by the following general formula (2a):
- R represents the same group as R in the general formula (2b)
- R is preferably obtained by subjecting a (meth) acrylic acid imino compound represented by the formula to -troxidation.
- R in the general formula (2b) and R in the general formula (2a) represent the same group.
- the (meth) acrylic acid-troxidide conjugate represented by the general formula (2b) is 2,2,6,6-tetramethyl 4-piberidi-loxy (meth) acrylate. .
- the crosslinked poly (meth) acrylate imino compound is -troxidized to form a bridge poly ( A method similar to the above-described method for producing a nitroxydide methacrylate acrylate can be used.
- the method of polymerizing the (meth) acrylic acid-troxide compound represented by the general formula (2b) in the presence of a crosslinking agent is not particularly limited.
- the cross-linked poly (meth) The same method as the above-described solution polymerization method for producing an imino acrylate compound can be used.
- the (meth) acrylic acid-troxide conjugate and a cross-linking agent such as ethylene glycol dimethacrylate, 1,3 butanediol dimethacrylate and 1,4 butanediol dimethacrylate are used.
- aromatic hydrocarbon solvents such as benzene, toluene, and xylene
- acyclic saturated hydrocarbon solvents such as n-hexane, n-heptane, and lignin
- cyclopentane, methylcyclopentane Cyclohexane, methylcyclohexane, and other cyclic saturated hydrocarbon solvents, and inert solvents such as ethyl ether, tetrahydrofuran, and other ether solvents, and then deoxygenate with nitrogen gas.
- Anion-based heavy such as lithium (n-butyllithium, t-butyllithium, 1,1-diphenylhexyllithium, etc.) More method of adding a polymerization initiator of the initiator, etc., cross-linked poly (meth) acrylic acid - it is possible to obtain a Torokishidi ⁇ thereof.
- the amount of the crosslinking agent used is such that the obtained cross-linked poly (meth) acrylate nitroxide compound exhibits sufficient solvent stability by appropriate crosslinking and an effect commensurate with the amount used.
- the mole of 0.00001 to 0.25 harmful to one mole of the conjugate is preferable, and this harmful ij compound is more preferable.
- the thickness be 0.1 monol, more preferably 0.0001 to 0.05 monol.
- the crosslinked poly (meth) acrylic acid-troxide compound obtained by force can be isolated from the reaction solution by a combination of unit operations such as filtration and drying.
- the electrode of a secondary battery can be manufactured by binding the crosslinked poly (meth) acrylic acid-troxide conjugate obtained in the present invention to a current collector.
- the current collector is an electrode component that collects electric charges generated from the electrodes of the secondary battery, and is made of a conductor.
- the member used for the current collector include metal foils such as nickel, aluminum, copper, gold, silver, aluminum alloys and stainless steel, metal plates and meshes, and carbon rods. .
- the method for producing an electrode of a secondary battery of the present invention includes a step of forming a coating of the crosslinked poly (meth) acrylic acid-troxide compound and a coating step of applying the coating to a current collector.
- the coating method and the coating method can be performed by using known methods and apparatuses, which are not particularly limited.
- An example of the method of coating is to mix a cross-linked poly (meth) acrylic acid-troxide compound with a binder and then add a solvent to form a slurry.
- the binder include, for example, polyvinylidene fluoride, bilidenefluoride-hexafluoropropylene copolymer, bilidenefluoride-tetrafluoroethylene copolymer, styrene′butadiene copolymer rubber, Examples include resin binders such as polypropylene, polyethylene, polyimide, and various polyurethanes.
- Specific examples of the solvent include dimethylformamide and N-methylpyrrolidone.
- the slurry obtained by the above-mentioned coating is dropped on the surface of the current collector, developed by a wire bar so as to have a uniform thickness as a whole, and then dried to remove the solvent. There is a method of removing.
- an auxiliary conductive material and an ion conductive auxiliary material may be appropriately added to the crosslinked poly (meth) acrylic acid-troxide conjugate for the purpose of lowering impedance.
- the auxiliary conductive material include carbonaceous fine particles such as graphite, carbon black and acetylene black, and conductive polymers such as polyaline, polypyrrole, polythiophene, polyacetylene and polyacene.
- the ion conduction aid include a polymer gel electrolyte and a polymer solid electrolyte.
- the thickness of the coating film obtained by applying the crosslinked poly (meth) acrylic acid-troxide compound formed into the paint is preferably from 10 to 1000 ⁇ m, more preferably from 50 to 300 ⁇ m. .
- the electrode obtained by the production method of the present invention can be suitably used as a material for a secondary battery having a high energy density and a large capacity, such as a lithium ion secondary battery.
- a crosslinked poly (meth) acrylic acid conjugate especially a crosslinked poly (meth) acrylic acid-troxide compound having excellent solvent stability, which is used as an electrode active material for a secondary battery.
- a manufacturing method and a method for manufacturing an electrode of a secondary battery using the compound are provided.
- Example 1 was repeated in the same manner as in Example 1 except that 2.50 g (12.5 mmol) of ethylene glycol dimethacrylate was used in place of 1.23 g (6.2 mmol) of ethylene glycol dimethacrylate. 17.2 g of a crosslinked polymethacrylic acid-troxidide conjugate of red powder was obtained.
- Example 3
- Example 1 was repeated except that 1.23 g (6.2 mmol) of ethylene glycol dimetharate was replaced by 1.40 g (6.2 mmol) of 1,3-butanediol dimetharate. Similarly, 17.2 g of a crosslinked polymethacrylic acid-troxide conjugate of red powder was obtained.
- reaction solution was filtered to separate a white precipitate, and the filtrate was washed with 600 ml of a 10% by weight aqueous solution of potassium carbonate and 600 ml of a saturated saline solution. After dehydration with magnesium sulfate, removal of magnesium sulfate, and drying under reduced pressure, 70.2 g of a red powdery methacrylic acid-troxide compound was obtained.
- the obtained crosslinked polymethacrylic acid imino conjugate was washed with 500 ml of water and then with 500 ml of hexane, and then dried under reduced pressure to obtain 22.8 g of a crosslinked polymethacrylic acid imino compound as a white powder (yield 99.5). %).
- the obtained crosslinked polymethacrylic acid-troxidized conjugate was washed with 500 ml of methanol and then with 500 ml of water, and then dried under reduced pressure to obtain a red powdered crosslinked polymethacrylic acid-troxidized conjugate 10.Og. .
- Example 5 A white powdered crosslinked polymethacrylic acid imino compound was obtained in the same manner as in Example 5, except that 0.36 g of sodium dodecylbenzenesulfonate was used instead of 0.30 g of sodium dodecylbenzenesulfonate. 6 g (98.7% yield) 0
- the obtained cross-linked polymethacrylic acid-troxide compound was washed with 500 ml of methanol and then with 500 ml of water, and then dried under reduced pressure to obtain a red powder of a crosslinked polymethacrylic acid-troxide conjugate 10.10 lg. .
- the reaction solution was filtered to obtain a crosslinked polymethacrylic acid-troxide compound.
- the obtained crosslinked polymethacrylic acid-troxide compound was washed with 500 ml of methanol and then with 500 ml of water, and then dried under reduced pressure to obtain 10.2 g of a red powder of a crosslinked polymethacrylic acid-troxide conjugate. .
- the obtained crosslinked polymethacrylic acid-troxidized conjugate was washed with 500 ml of methanol and then with 500 ml of water, and then dried under reduced pressure to obtain a red powdered crosslinked polymethacrylic acid-troxidized conjugate 10.Og. .
- Example 1 16.9 g of a red powder was obtained in the same manner as in Example 1 except that 1.23 g (6.2 mmol) of ethylene glycol dimethalate was not used.
- Example 4 65.8 g of a red powder was obtained in the same manner as in Example 4 except that 1.23 g (6.2 mmol) of ethylene glycol dimetharate was not used.
- Example 6 10.3 g of a red powder was obtained in the same manner as in Example 6, except that 0.40 g (2.0 mmol) of ethylene glycol dimethacrylate was not used.
- a red powder (10.3 g) was obtained in the same manner as in Example 8 except that 0.80 g (4.0 mmol) of ethylene glycol dimetharate was not used.
- the red powders obtained in Examples 1 to 8 are excellent in solvent stability because the solubility in all solvents used for evaluation is 1% or less. That's what it is.
- Example 2 The red powder obtained in Example 2 was mixed at 10% by weight with respect to each solvent used, and then stored at 40 ° C with stirring. After a predetermined period, the filtrate obtained by filtration was dried under reduced pressure at 150 ° C. and 10 mmHg for 15 hours to obtain a crude dissolved component. The crude dissolved matter was washed with pure water, dried under reduced pressure at 150 ° C and 10 mmHg for 3 hours, and the dissolved matter was obtained to determine the solubility. Table 2 shows the results.
- Retention period 10 Retention period 20 Retention period 50 Remarks Propylene power 1 ⁇ 1 ⁇ 1 ⁇ 1 Jetirka 1 Ponate 1 ⁇ 1 ⁇ 1 Ethylene power 1 ton
- the red powder of the crosslinked polymethacrylic acid-troxide compound obtained in Example 1 was pulverized using an agate mortar to a particle size of 100 m or less, of which lg and 50 g of N-methylpyrrolidone as a solvent were used. Were mixed with 0.9 g of graphite powder as an auxiliary conductive material, and stirred to obtain a black slurry. 2 g of this slurry was dropped onto the surface of an aluminum foil (area: 1.5 cm X I. 5 cm, thickness: 100 m) provided with lead wires, and spread using a wire bar so that the entire surface had a uniform thickness. Thereafter, the electrode was dried under reduced pressure at 120 ° C.
- the thickness of the coating film composed of red powder was measured by a film thickness measuring device (MHF-D100LR, manufactured by MORI TEX Co., Ltd.) and found to be 150 ⁇ m.
- Example 1 After cutting this electrolyte film into 2.Ocm X 2.Ocm, the previously prepared red powder obtained in Example 1 was laminated on the electrode bound to the current collector, Lithium bonded copper foil with lead wire (Lithium film thickness 30 m, copper foil film thickness 20 m) was superposed thereon. Subsequently, the whole was rolled up using a 5 mm-thick polytetrafluoroethylene sheet and pressed against each other to bind the red powder obtained in Example 1 to the current collector. A lithium-ion secondary battery using the electrodes was fabricated.
- Example 9 The same procedure as in Example 9 was repeated, except that the red powder obtained in Comparative Example 1 was used instead of the red powder of the crosslinked polymethacrylic acid-troxide compound obtained in Example 1, A lithium ion secondary battery using the electrode was manufactured.
- the thickness of the coating film composed of the red powder was measured in the same manner as in Example 9, and it was 150 m.
- Example 9 For the lithium ion secondary battery obtained in Example 9 and the lithium ion secondary battery using the electrode obtained by binding the red powder obtained in Comparative Example 5 to a current collector, a charge / discharge tester ( The battery was connected to Nagano Corporation (BTS2004W), and the charge and discharge characteristics were evaluated at a constant current density (42 ⁇ A / cm 2 , 20 ° C.).
- an electrode material and a method for manufacturing an electrode which are useful for a secondary battery having a high energy density and a large capacity.
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Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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EP05743720.4A EP1752474B1 (en) | 2004-05-31 | 2005-05-30 | Method for producing crosslinked poly(meth)acrylate compound |
CN2005800176489A CN1961006B (zh) | 2004-05-31 | 2005-05-30 | 交联聚(甲基)丙烯酸化合物的制造方法 |
JP2006513990A JP5124139B2 (ja) | 2004-05-31 | 2005-05-30 | 架橋ポリ(メタ)アクリル酸ニトロキシド化合物の製造方法 |
US11/569,819 US7816457B2 (en) | 2004-05-31 | 2005-05-30 | Method for producing crosslinked poly(meth)acrylate compound |
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EP (1) | EP1752474B1 (ja) |
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JP2008081557A (ja) * | 2006-09-26 | 2008-04-10 | Sumitomo Seika Chem Co Ltd | (メタ)アクリル酸系架橋共重合体の製造方法および該架橋共重合体を用いた二次電池の電極 |
JP2008174543A (ja) * | 2006-12-20 | 2008-07-31 | Sumitomo Seika Chem Co Ltd | (メタ)アクリル酸ジアザアダマンチル化合物およびその製造方法 |
JP2008174725A (ja) * | 2006-12-20 | 2008-07-31 | Sumitomo Seika Chem Co Ltd | (メタ)アクリル酸アダマンチル系架橋重合体およびそれを用いた二次電池の電極 |
FR2911723A1 (fr) * | 2007-01-19 | 2008-07-25 | Arkema France | Electrode comprenant au moins un polynitroxyde triazinique |
WO2008099100A1 (fr) * | 2007-01-19 | 2008-08-21 | Arkema France | Electrode comprenant au moins un polynitroxyde triazinique |
FR2912554A1 (fr) * | 2007-02-12 | 2008-08-15 | Arkema France | Electrode comprenant au moins un nitroxyde et des nanotubes de carbone |
WO2008104683A1 (fr) * | 2007-02-12 | 2008-09-04 | Arkema France | Electrode comprenant au moins un nitroxyde et des nanotubes de carbone |
JP2008222999A (ja) * | 2007-02-14 | 2008-09-25 | Sumitomo Seika Chem Co Ltd | (メタ)アクリル酸アダマンチル系架橋重合体の製造方法および該架橋重合体を用いた二次電池の電極 |
JP2010180285A (ja) * | 2009-02-03 | 2010-08-19 | Sumitomo Seika Chem Co Ltd | ニトロキシドラジカル架橋重合体組成物 |
JP2011074317A (ja) * | 2009-10-01 | 2011-04-14 | Waseda Univ | ポリラジカル化合物の製造方法 |
JP2013184981A (ja) * | 2012-03-05 | 2013-09-19 | Sumitomo Seika Chem Co Ltd | ラジカル材料組成物の製造方法、二次電池用活物質、二次電池用電極、及び、二次電池 |
JP2015060636A (ja) * | 2013-09-17 | 2015-03-30 | 日本電気株式会社 | 二次電池 |
JP2019523792A (ja) * | 2016-06-02 | 2019-08-29 | エボニック デグサ ゲーエムベーハーEvonik Degussa GmbH | 電極材料の製造方法 |
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EP1752474B1 (en) | 2013-06-12 |
US7816457B2 (en) | 2010-10-19 |
JP5124139B2 (ja) | 2013-01-23 |
EP1752474A4 (en) | 2010-03-10 |
CN101704924B (zh) | 2012-06-27 |
US20080319149A1 (en) | 2008-12-25 |
JPWO2005116092A1 (ja) | 2008-04-03 |
CN101704924A (zh) | 2010-05-12 |
CN1961006A (zh) | 2007-05-09 |
CN1961006B (zh) | 2010-05-05 |
EP1752474A1 (en) | 2007-02-14 |
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