TW201833203A - Conductive carbon material dispersion - Google Patents

Abstract

Provided is a conductive carbon material dispersion comprising a conductive carbon material and at least one defoaming agent selected from among acetylene-based surfactants, silicone-based surfactants, metal soap-based surfactants, and acrylic surfactants. The conductive carbon material dispersion can suppress the generation of bubbles in the conductive carbon material dispersion, can be uniformly applied, and can provide a uniform conductive thin film, even when a dispersant having a surfactant activity is used.

Description

Conductive carbon material dispersion

[0001] The present invention relates to a conductive carbon material dispersion, and more particularly to a conductive carbon material dispersion containing a conductive carbon material and an antifoaming agent, and is suitable as a composition for a conductive film.

[0002] In recent years, with the demand for small-sized lightweight or high-performance electronic devices such as smart phones, digital cameras, and game consoles, the development of high-performance batteries has been actively promoted, and it can be reused by charging. The need for secondary batteries has also increased significantly. Among them, a lithium ion secondary battery has a high energy density and a high voltage, and does not have a memory effect at the time of charge and discharge, and is now a secondary battery that is most concentrated in development. In addition, in recent years, the development of electric vehicles has been widely carried out for environmental measures, and secondary batteries as their power sources have been increasingly required to have higher performance. [0003] On the other hand, a lithium ion secondary battery has a positive electrode and a negative electrode that adsorb and release lithium, and a spacer interposed between the lithium and the negative electrode is housed in a container and filled with an electrolyte (lithium ion polymer) The case of the secondary battery is a configuration in which a liquid electrolyte is used instead of a gel-like or all-solid electrolyte. The positive electrode and the negative electrode are generally produced by applying a composition including an active material for adsorbing and releasing lithium, a conductive material mainly composed of a carbon material, and a polymer binder to a current collector such as a copper foil or an aluminum foil. The binder is commercially available as a metal foil, and is preferably soluble in N-methylpyrrolidone (NMP) such as polyvinylidene fluoride (PVdF) for the purpose of adhering the active material to the conductive material. A fluorine-based resin or an aqueous dispersion of an olefin-based polymer. [0004] As described above, the lithium ion secondary battery is also expected to be used as a power source for an electric vehicle or the like, and therefore requires a longer life or safety than the above. However, it is difficult for the adhesion force of the above-mentioned binder to the current collector to be sufficient. When the electrode sheet is subjected to a manufacturing step such as a cutting step or a winding-back step, part of the active material or the conductive material is peeled off from the current collector, and is peeled off. It is the cause of the slight shortcoming or the variation in battery capacity. Moreover, since the adhesive is swollen by the electrolyte for a long period of time, or the volume of the electrode material changes due to the volume change caused by the adsorption and release of lithium by the active material, the electrode material and the current collector are caused. The contact resistance between the two increases, and the battery capacity of one of the active material or the conductive material is deviated from the current collector, and the battery capacity is deteriorated, or the safety is further caused. In particular, in recent years, the development of an active material in which a charge and discharge capacity of an alloy system called a ruthenium or the like in a positive electrode system is larger than that of a conventional one is performed, and thus the volume change due to charge and discharge is also large. The peeling of the electrode material from the current collector is a problem that should be solved as early as possible. [0005] As an attempt to solve the above problems, a method of inserting a conductive adhesive layer between a current collector and an electrode material has been developed. For example, Patent Document 1 discloses a conductive film obtained by dispersing a conductive carbon material by using a surfactant having a oxazoline group as a dispersant and dispersing a conductive carbon material (hereinafter, The current collector (hereinafter also referred to as a composite current collector), which is also referred to as a conductive adhesive layer, can reduce the contact resistance between the current collector and the electrode material, and can suppress the capacity reduction at the time of high-speed discharge, and It is also possible to suppress deterioration of the battery. [0006] However, when the conductive carbon material dispersion as described above is used, bubbles are easily generated in the coating step, the operation becomes complicated when the coating liquid is produced, or when it is applied to the current collector, A coating defect such as repulsion of bubbles is generated to significantly impair the appearance of the coating or a new problem such as the performance of the battery. In particular, in the aqueous dispersion, the use of a carbon nanotube as the conductive carbon material, the use of a polymer having an oxazoline group as a dispersant, and a case where the conductive adhesive layer is a low unit weight, the problem becomes more remarkable. . [0007] In order to solve such problems, an attempt has been made to add an antifoaming agent to a dispersion of a conductive carbon material using a dispersing agent having an interfacial activity to suppress generation of bubbles, but it is impossible to defoam even if an antifoaming agent is added. The antifoaming agent interacts with the dispersing agent or the conductive carbon material to cause the conductive carbon material to aggregate, resulting in failure to maintain a uniform dispersion state, and it is impossible to prepare a uniform conductive film. [Prior Art Document] [Patent Document] [0008] [Patent Document 1] Japanese Patent No. 5773097

[Problems to be Solved by the Invention] The present invention has been made in view of such circumstances, and an object thereof is to provide a bubble capable of suppressing a dispersion of a conductive carbon material even when a dispersing agent having an interfacial activity is used. A conductive carbon material dispersion which is produced and can be uniformly coated to form a uniform conductive film. [Means for Solving the Problems] The inventors of the present invention have carefully studied the results of the above-mentioned objects, and found that by adding a conductive carbon material, it is selected from an acetylene-based surfactant and a polyfluorene-based interfacial activity. At least one antifoaming agent, a metal soap surfactant, and an acrylic surfactant can suppress the generation of bubbles, and it is found that the conductive carbon material can be surprisingly maintained by adding an acetylene surfactant. The present invention can be completed by uniformly dispersing the state and suppressing the generation of bubbles, and obtaining a conductive carbon material dispersion which can be uniformly coated. [0011] That is, the present invention provides: 1. A conductive carbon material dispersion characterized by comprising a conductive carbon material, and an interface activity selected from the group consisting of an acetylene surfactant, a polyoxon surfactant, and a metal soap. One or two or more kinds of antifoaming agents of the agent and the acrylic surfactant. 2. The conductive carbon material dispersion according to 1, wherein the antifoaming agent comprises an acetylene surfactant. 3. The conductive carbon material dispersion according to 1 or 2, which further comprises a conductive carbon material dispersing agent having an interfacial activity, and a dispersing medium. 4. The conductive carbon material dispersion according to any one of 1 to 3, wherein the conductive carbon material comprises one or more selected from the group consisting of graphite, carbon black, and carbon nanotubes. 5. The conductive carbon material dispersion according to any one of 1 to 4, wherein the conductive carbon material comprises a carbon nanotube. 6. The conductive carbon material dispersion according to any one of 3 to 5, wherein the dispersion medium contains water. 7. The conductive carbon material dispersion according to any one of 3 to 6, wherein the conductive carbon material dispersant comprises a polymer having an oxazoline group in a side chain. 8. The conductive carbon material dispersion according to 7, wherein the polymer having an oxazoline group in the side chain is a polymer of an oxazoline monomer represented by the following formula (1); (wherein X represents a polymerizable carbon-carbon double bond group, and R ¹ to R ⁴ each independently represent a hydrogen atom, a halogen atom, an alkyl group having 1 to 5 carbon atoms, an aryl group having 6 to 20 carbon atoms, or An aralkyl group having a carbon number of 7 to 20). 9. The conductive carbon material dispersion according to 8, wherein the chain hydrocarbon group containing a polymerizable carbon-carbon double bond is an alkenyl group having 2 to 8 carbon atoms. 10. The conductive carbon material dispersion according to 8, wherein the oxazoline monomer is selected from the group consisting of 2-vinyl-2-oxazoline, 2-vinyl-4-methyl-2-oxazoline, 2 -vinyl-4-ethyl-2-oxazoline, 2-vinyl-4-propyl-2-oxazoline, 2-vinyl-4-butyl-2-oxazoline, 2-ethylene 5-methyl-2-oxazoline, 2-vinyl-5-ethyl-2-oxazoline, 2-vinyl-5-propyl-2-oxazoline, 2-vinyl- 5-butyl-2-oxazoline, 2-isopropenyl-2-oxazoline, 2-isopropenyl-4-methyl-2-oxazoline, 2-isopropenyl-4-ethyl -2-oxazoline, 2-isopropenyl-4-propyl-2-oxazoline, 2-isopropenyl-4-butyl-2-oxazoline, 2-isopropenyl-5- 2-oxazoline, 2-isopropenyl-5-ethyl-2-oxazoline, 2-isopropenyl-5-propyl-2-oxazoline and 2-isopropenyl-5- One or two or more kinds of butyl-2-oxazolines are in groups. 11. The conductive carbon material dispersion according to 10, wherein the oxazoline monomer is 2-isopropenyl-2-oxazoline. 12. The conductive carbon material dispersion according to any one of 1 to 11, which comprises a crosslinking agent. 13. The conductive carbon material dispersion according to 12, wherein the crosslinking agent comprises a compound which causes a crosslinking reaction with an oxazoline group. 14. The conductive carbon material dispersion according to 13, wherein the compound which causes cross-linking reaction with the oxazoline group comprises a metal salt and a natural polymer selected from synthetic polymers which exhibit cross-linking reactivity in the presence of an acid catalyst. A metal salt and a compound of an ammonium salt of a synthetic polymer which exhibits cross-linking reactivity by heating and an ammonium salt of a natural polymer. 15. The conductive carbon material dispersion according to 14, wherein the compound which causes crosslinking reaction with the oxazoline group comprises a selected from the group consisting of lithium polyacrylate, sodium polyacrylate, ammonium polyacrylate, lithium carboxymethyl cellulose, and carboxymethyl group. A compound of sodium cellulose, carboxymethylcellulose ammonium, and ammonium alginate. 16. The conductive carbon material dispersion according to any one of 1 to 15, which comprises a polymer which becomes a matrix. A conductive adhesive layer obtained by the conductive carbon material dispersion according to any one of 1 to 16. 18. A conductive adhesive layer such as 17, wherein the thickness is 5 μm or less. 19. The conductive adhesive layer of 17, wherein the thickness is 1 μm or less. 20. The conductive bonding layer of 17, wherein the thickness is 0.5 μm or less. A composite current collector for an electrode of an energy storage device, comprising: a current collecting substrate; and a conductive adhesive layer according to any one of 17 to 20 formed on the substrate. An electrode for an energy storage device comprising a composite current collector for an electrode of an energy storage device of 21. 23. The electrode for an energy storage device according to 22, comprising a composite current collector for an energy storage device of 21, and an active material layer formed on the conductive adhesive layer of the composite current collector. 24. An energy storage device comprising an electrode for an energy storage device such as 22 or 23. 25. An energy storage device such as 24, which is a lithium ion secondary battery. A method for producing a foaming-inhibited conductive carbon material dispersion, characterized by mixing a conductive carbon material, a conductive carbon material dispersing agent having an interfacial activity, a dispersing medium, and an acetylene-based surfactant. A defoaming method for a conductive carbon material dispersion, characterized by mixing a conductive carbon material, a conductive carbon material dispersing agent having an interfacial activity, a dispersing medium, and an acetylene surfactant. [Effect of the Invention] [0012] Since the conductive carbon material dispersion of the present invention is less likely to be foamed, it is easy to prepare and uniformly coat, and it is easy to apply the dispersion to a substrate. A uniform film is obtained. Since the obtained film exhibits high conductivity, it is suitable for producing a conductive film, and not only provides a film excellent in adhesion to a substrate, but also can form a large area with good reproducibility by a wet method. Since the film is suitable for use in an energy storage device, it can be suitably used as a wide range of applications such as various semiconductor materials and electrical conductor materials. In particular, since a conductive film having excellent adhesion to a current collecting substrate can be formed, it is preferable to use a conductive film composition for forming a conductive substrate such as a current collecting substrate and an active material that constitutes an electrode of the energy storage device. . Since the electric resistance of the energy storage device can be reduced by using the conductive adhesive layer, it is possible to achieve a longer life without causing a voltage drop and releasing a current, particularly in applications requiring a large current such as an electric vehicle. .

[0013] Hereinafter, the present invention will be described in more detail. The conductive carbon material dispersion of the present invention comprises a conductive carbon material and one or two selected from the group consisting of an acetylene surfactant, a polyoxon surfactant, a metal soap surfactant, and an acrylic surfactant. More than the above defoamers. In particular, when suppressing aggregation of the conductive carbon material and maintaining uniform dispersibility, it is preferable to use an antifoaming agent containing an acetylene surfactant, and an antifoaming agent containing 50% by mass or more of the acetylene surfactant. An antifoaming agent containing 80% by mass or more of an acetylene surfactant is preferred, and an antifoaming agent composed only of an acetylene surfactant (100% by mass) is preferred. Further, in the conductive carbon material dispersion of the present invention, the amount of the antifoaming agent is not particularly limited, and it is considered that the foaming suppressing effect is sufficiently exhibited, and aggregation of the conductive carbon material is suppressed to maintain uniform dispersibility. It is preferably 0.001 to 1.0% by mass, and preferably 0.01 to 0.5% by mass, based on the entire dispersion. In the present invention, a specific example of an acetylene surfactant as an antifoaming agent is used, and it is not particularly limited to use an ethoxy group containing acetylene glycol represented by the following formula (A). A surfactant of a base compound is preferred. [0015] In the formula (A), R ⁵ ~R ⁸ The alkyl groups each independently represent a carbon number of 1 to 10, and n and m each independently represent an integer of 0 or more, and n + m = 0 to 40. Specific examples of the alkyl group having 1 to 10 carbon atoms may be any of a linear chain, a branched chain, and a cyclic group, and examples thereof include a methyl group, an ethyl group, an n-propyl group, and an isopropyl group. , n-butyl, sec-butyl, tert-butyl, n-pentyl, n-hexyl, n-heptyl, n-octyl, n-fluorenyl, n-fluorenyl and the like. [0017] Specific examples of the acetylene glycol represented by the above formula (A) include, for example, 2,5,8,11-tetramethyl-6-dodecyne-5,8-diol, and 5, 8-Dimethyl-6-dodecyne-5,8-diol, 2,4,7,9-tetramethyl-5-decyne-4,7-diol, 4,7-dimethyl -5-decyne-4,7-diol, 2,3,6,7-tetramethyl-4-octyne-3,6-diol, 3,6-dimethyl-4-octyne- 3,6-diol, 2,5-dimethyl-3-hexyne-2,5-diol, 2,4,7,9-tetramethyl-5-decyne-4,7-diol Ethoxylate (ethylene oxide addition mole number: 1.3), 2,4,7,9-tetramethyl-5-decyne-4,7-diol ethoxylate (epoxy Ethane addition mole number: 4), 3,6-dimethyl-4-octyne-3,6-diol ethoxylate (ethylene oxide addition mole number: 4), 2 , 5,8,11-tetramethyl-6-dodecyne-5,8-diol ethoxylate (ethylene oxide addition mole number: 6) 2,4,7,9-four Ethoxylate of methyl-5-decyne-4,7-diol (ethylene oxide addition mole number: 10), 2,4,7,9-tetramethyl-5-decyne- Ethoxylate of 4,7-diol (ethylene oxide addition mole number: 30), 3,6-dimethyl-4-octyne-3,6-diol ethoxylate ( Ethylene oxide addition moles: 20), etc., these can be separate One type may be used, or two or more types may be used in combination. [0018] The acetylene-based surfactant which can be used in the present invention can be obtained as a commercial product, and as such a commercially available product, for example, Olfine D-10PG (manufactured by Nissin Chemical Industry Co., Ltd., active ingredient 50 mass) %, light yellow liquid), Olfine E-1004 (made by Rixin Chemical Industry Co., Ltd., active ingredient 100% by mass, light yellow liquid), Olfine E-1010 (made by Rixin Chemical Industry Co., Ltd., active ingredient 100 mass) %, light yellow liquid), Olfine E-1020 (made by Rixin Chemical Industry Co., Ltd., active ingredient 100% by mass, light yellow liquid), Olfine E-1030W (made by Rixin Chemical Industry Co., Ltd., active ingredient 75 mass) %, light yellow liquid), Surfynol 420 (made by Rixin Chemical Industry Co., Ltd., 100% by mass of active ingredient, yellowish viscous material), Surfynol 440 (made by Rixin Chemical Industry Co., Ltd.), active ingredient 100% by mass, light Yellow viscous material), Surfynol 104E (manufactured by Nissin Chemical Industry Co., Ltd., active ingredient 50% by mass, yellowish viscous material). [0019] The polyfluorene-based surfactant used as the antifoaming agent in the present invention is not particularly limited, and may be any of a linear chain, a branched chain, and a ring, as long as it contains at least a polyfluorene chain. Further, any of a hydrophobic group and a hydrophilic group may be contained. Specific examples of the hydrophobic group include methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, sec-butyl group, tert-butyl group, n-pentyl group, and n-hexyl group. An alkyl group such as an n-heptyl group, an n-octyl group, an n-fluorenyl group or an n-fluorenyl group; a cyclic alkyl group such as a cyclohexyl group; an aromatic hydrocarbon group such as a phenyl group; Specific examples of the hydrophilic group include an amine group, a mercapto group, a hydroxyl group, an alkoxy group, a carboxylic acid, a sulfonic acid, a phosphoric acid, a nitric acid, and the like, or an organic salt or an inorganic salt, an ester group, an aldehyde group, and a propylene group. An alcohol group, a heterocyclic group or the like. Specific examples of the polyoxymethylene-based surfactant include, for example, dimethyl polyfluorene oxide, methylphenyl polyfluorene oxide, chlorophenyl polyfluorene oxide, alkyl modified polyoxyl, and fluorine denaturation. Polyoxymethylene, amine-denatured polyoxyl, alcohol-denatured polyoxyl, phenol-denatured polyoxygen, carboxyl-denatured polyoxyl, epoxy-denatured polyoxyl, fatty acid ester-denatured polyoxyl, polyether-denatured polyoxyl Wait. [0021] A commercially available product can be obtained by using a polyoxo-based surfactant which can be used in the present invention, and examples of such a commercially available product include BYK-300, BYK-301, BYK-302, and BYK-306. BYK-307, BYK-310, BYK-313, BYK-320BYK-333, BYK-341, BYK-345, BYK-346, BYK-347, BYK-348, BYK-349 (above trade name, BYK JAPAN) )), KM-80, KF-351A, KF-352A, KF-353, KF-354L, KF-355A, KF-615A, KF-945, KF-640, KF-642, KF-643, KF- 6020, X-22-4515, KF-6011, KF-6012, KF-6015, KF-6017 (above trade name, Shin-Etsu Chemical Co., Ltd.), SH-28PA, SH8400, SH-190, SF-8428 (The above product name, Toray Dow Corning (share) system), Polyflow KL-245 , Polyflow KL - 270, Polyflow KL-100 (above trade name, Kyoeisha Chemical Co., Ltd.), Silface SAG002, Silface SAG005, Silface SAG0085 (above trade name, Nissin Chemical Industry Co., Ltd.). [0022] The metal soap-based surfactant used as the antifoaming agent in the present invention is not particularly limited, and may be a linear, branched chain or cyclic ring containing at least a polyvalent metal ion such as calcium or magnesium. A metal soap of any configuration. More specifically, for example, aluminum stearate, manganese stearate, cobalt stearate, copper stearate, iron stearate, nickel stearate, calcium stearate, zinc laurate, and twenty A salt of a fatty acid having a carbon number of 12 to 22 such as magnesium diacid and a metal (alkaline earth metal, aluminum, manganese, cobalt, copper, iron, zinc, nickel, etc.). The metal soap-based surfactant which can be used in the present invention can be obtained as a commercially available product, and examples of such a commercially available product include Nopko NXZ (trade name, manufactured by Sanno Poko Co., Ltd.). [0023] The acrylic surfactant used as the antifoaming agent in the present invention is not particularly limited as long as it is a polymer obtained by polymerizing at least an acrylic monomer, and at least an alkyl acrylate is polymerized. The polymer is preferably a polymer obtained by polymerizing at least an alkyl acrylate having an alkyl group having 2 to 9 carbon atoms. Specific examples of the alkyl acrylate having 2 to 9 carbon atoms of the alkyl group include ethyl acrylate, n-propyl acrylate, isopropyl acrylate, n-butyl acrylate, and acrylic acid. Butyl ester, t-butyl acrylate, n-octyl acrylate, 2-ethylhexyl acrylate, isodecyl acrylate, and the like. [0024] The acrylic surfactant which can be used in the present invention can be obtained as a commercial product, and examples of such commercially available products include 1970, 230, LF-1980, LF-1982 (-50), and LF-. 1983 (-50), LF-1984 (-50), LHP-95, LHP-96, UVX-35, UVX-36, UVX-270, UVX-271, UVX-272, AQ-7120, AQ-7130 ( Above, Nanben Chemical (share) system name), BYK-350, BYK-352, BYK-354, BYK-355, BYK-358, BYK-380, BYK-381, BYK-392 (above, BYK JAPAN (shares) )), Polyflow No.7, Polyflow No.50E, Polyflow No.85, Polyflow No.90, Polyflow No.95, Flowlen AC-220F, Polyflow KL-800 (above, Kyoeisha Chemical Co., Ltd.) Product name), Newcol series (made by Japan Emulsifier). [0025] The conductive carbon material is not particularly limited, and is preferably a fibrous conductive carbon material, a layered conductive carbon material, or a particulate conductive carbon material when used to form a bonding layer of a secondary battery. . In addition, these conductive carbon materials may be used alone or in combination of two or more. Specific examples of the fibrous conductive carbon material include carbon nanotubes (CNTs) and carbon nanofibers (CNF), and CNTs are used from the viewpoints of conductivity, dispersibility, and availability. It is better. The CNT is generally produced by an arc discharge method, a chemical vapor phase growth method (CVD method), laser polishing, or the like, and the CNT used in the present invention can be obtained by any method. In addition, the CNT has a single layer of CNT (hereinafter also referred to as SWCNT) in which one carbon film (graphene sheet) is wound into a cylindrical shape, and two layers of CNTs in which two graphene sheets are wound into a concentric shape. (hereinafter also referred to as DWCNT), a plurality of layers of CNTs (MWCNTs) are wound into a concentric shape, and in the present invention, SWCNTs, DWCNTs, MWCNTs may be used alone or in combination, or a plurality of them may be used in combination. Further, when SWCNT, DWCNT or MWCNT is produced by the above method, since a catalyst metal such as nickel, iron, cobalt or rhodium is left, it is necessary to carry out purification for removing the impurities. The removal of impurities can effectively use acid treatment and ultrasonic treatment by nitric acid, sulfuric acid, and the like. However, acid treatment by nitric acid, sulfuric acid or the like may cause damage to the π-conjugated system constituting the CNT and impair the properties of the CNT itself. Therefore, it is preferably used after purification under appropriate conditions. [0027] Specific examples of the CNT that can be used in the present invention include a super growth method CNT [National Research and Development Corporation, New Energy, Industrial Technology Development Organization], and eDIPS-CNT [National Research and Development Corporation New Energy] Industrial Technology Development Co., Ltd.], SWNT Series [(shares) Nikken Carbon: Product Name], VGCF Series [Showa Electric Co., Ltd.: Product Name], FloTube Series [CNano Technology Co., Ltd.: Product Name] , AMC [Ube Industries Co., Ltd.: product name], NANOCYL NC7000 series [Nanocyl SA company: product name], Baytubes [BAYER company: product name], GRAPHISTRENGTH [Arkema company: trade name], MWNT7 [ Hodogaya Chemical Industry Co., Ltd.: trade name], Titan CNT [manufactured by Hypeprion Catalysis International Co., Ltd.: trade name]. [0028] Specific examples of the layered conductive carbon material include graphite, graphene, and the like. The graphite is not particularly limited, and various commercially available graphites can be used. Graphene is a sheet of sp2 bonded carbon atoms having a thickness of one atom, and is a hexagonal lattice structure such as a honeycomb formed by bonding a carbon atom thereto, and has a thickness of about 0.38 nm. Further, in addition to commercially available graphene oxide, graphene oxide obtained by treating graphite by the Hummers method may also be used. [0029] Specific examples of the particulate conductive carbon material include carbon black such as furnace black, channel black, acetylene black, and thermal black. The carbon black is not particularly limited, and various commercially available carbon blacks may be used, and the particle diameter thereof is preferably 5 to 500 nm. [0030] As the solvent, pure water; ethers such as tetrahydrofuran (THF), diethyl ether, 1,2-dimethoxyethane (DME), etc.; dichloromethane, chloroform, 1,2- can be used alone. Halogenated hydrocarbons such as dichloroethane; N,N-dimethylformamide (DMF), N,N-dimethylacetamide (DMAc), N-methyl-2-pyrrolidone (NMP) And other amides; acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone and other ketones; methanol, ethanol, isopropanol, n-propanol and other alcohols; n-g An aliphatic hydrocarbon such as an alkane, n-hexane or cyclohexane; an aromatic hydrocarbon such as benzene, toluene, hydrazine or ethylbenzene; ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, propylene glycol A glycol ether such as a monomethyl ether; an organic solvent such as a glycol such as ethylene glycol or propylene glycol; or a combination of two or more thereof, which is low in cost, high in safety, and low in environmental load. In view of the above, a solvent containing at least pure water is preferred, and a solvent of pure water alone is preferred. The conductive carbon material dispersing agent used in the present invention is not particularly limited as long as the conductive carbon material can be dispersed in a solvent, and the conductive film obtained by drying has strength, so that it has A polymer-based dispersant having an interfacial activity is preferred. Specific examples of the polymer-based dispersant having an interfacial activity include oxazoline polymers; polyalkylene glycols such as polyethylene glycol and polypropylene glycol; and polyacrylamide; Styrene sulfonic acid; poly(meth)acrylic acid derivatives such as poly(meth)acrylic acid, sodium poly(meth)acrylate, poly(methyl)acrylate, etc.; polyethylene such as polyvinyl alcohol or polyvinyl acetal Alcohol derivatives; cellulose derivatives of methyl cellulose, carboxy cellulose, hydroxymethyl cellulose; natural polymers and derivatives thereof such as starch, lignosulfonate, sodium alginate, etc., such polymers The constituent unit, that is, a copolymer of two or more kinds of polymerizable monomers, a copolymer with another monomer, a crown ether or the like, which is called a phase shift catalyst, etc., is used in order to form a bonding layer of a secondary battery. The oxazoline polymer is preferred from the viewpoints of dispersibility, solubility, adhesion to a current collector substrate, and the like. The oxazoline polymer is not particularly limited as long as it is a polymer bonded to an oxazoline group directly or via a spacer such as an alkyl group, in the repeating unit constituting the main chain. Specifically, a radical polymerization of an oxazoline monomer having a polymerizable carbon-carbon double bond group at the 2-position as shown in the formula (1) is obtained at the 2-position of the oxazoline ring. The repeating unit in which the polymer main chain or the spacer is bonded is preferably a vinyl-based polymer having an oxazoline group in the side chain. [0034] [0035] The above X represents a polymerizable carbon-carbon double bond group, R ¹ ~R ⁴ Each of them independently represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 5 carbon atoms, an aryl group having 6 to 20 carbon atoms, or an aralkyl group having 7 to 20 carbon atoms. The polymerizable carbon-carbon double bond group which the oxazoline monomer has is a chain hydrocarbon group containing a polymerizable carbon-carbon double bond, as long as it contains a polymerizable carbon-carbon double bond, and is not particularly limited. Preferably, an alkenyl group having 2 to 8 carbon atoms such as a vinyl group, an allyl group or an isopropenyl group is preferred. Here, examples of the halogen atom include a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom. The alkyl group having 1 to 5 carbon atoms may be any of a linear chain, a branched chain, and a cyclic ring, and examples thereof include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, and an n-butyl group. Base, sec-butyl, tert-butyl, n-pentyl, cyclohexyl and the like. Specific examples of the aryl group having 6 to 20 carbon atoms include a phenyl group, a decyl group, a tolyl group, a biphenyl group, and a naphthyl group. Specific examples of the aralkyl group having 7 to 20 carbon atoms include a benzyl group, a phenylethyl group, and a phenylcyclohexyl group. Specific examples of the oxazoline monomer having a polymerizable carbon-carbon double bond group in the formula represented by the formula (1) include, for example, 2-vinyl-2-oxazoline, 2- Vinyl-4-methyl-2-oxazoline, 2-vinyl-4-ethyl-2-oxazoline, 2-vinyl-4-propyl-2-oxazoline, 2-vinyl -4-butyl-2-oxazoline, 2-vinyl-5-methyl-2-oxazoline, 2-vinyl-5-ethyl-2-oxazoline, 2-vinyl-5 -propyl-2-oxazoline, 2-vinyl-5-butyl-2-oxazoline, 2-isopropenyl-2-oxazoline, 2-isopropenyl-4-methyl-2 -oxazoline, 2-isopropenyl-4-ethyl-2-oxazoline, 2-isopropenyl-4-propyl-2-oxazoline, 2-isopropenyl-4-butyl- 2-oxazoline, 2-isopropenyl-5-methyl-2-oxazoline, 2-isopropenyl-5-ethyl-2-oxazoline, 2-isopropenyl-5-propyl 2-oxazoline, 2-isopropenyl-5-butyl-2-oxazoline and the like are preferably 2-isopropenyl-2-oxazoline from the viewpoint of availability and the like. Further, in consideration of the use of an aqueous solvent to prepare a conductive carbon material dispersant, it is preferred that the oxazoline polymer is water-soluble. Such a water-soluble oxazoline polymer may be a homopolymer of an oxazoline monomer represented by the above formula (1), but in order to further improve solubility in water, the above-mentioned oxazoline monomer may be It is preferred that at least two monomers of the (meth) acrylate monomer having a hydrophilic functional group are subjected to radical polymerization. Specific examples of the (meth)acrylic monomer having a hydrophilic functional group include (meth)acrylic acid, 2-hydroxyethyl acrylate, methoxypolyethylene glycol acrylate, and acrylic acid. Monoesters with polyethylene glycol esters, 2-aminoethyl acrylate and its salts, 2-hydroxyethyl methacrylate, methoxypolyethylene glycol methacrylate, methacrylic acid and polyethylene glycol Monoester, 2-aminoethyl methacrylate and its salts, sodium (meth)acrylate, ammonium (meth)acrylate, (meth)acrylonitrile, (meth)acrylamide, N-hydroxyl Methyl (meth) acrylamide, N-(2-hydroxyethyl) (meth) acrylamide, sodium styrene sulfonate, etc. may be used alone or in combination of two or more. Among these, a monoester of (meth)acrylic acid methoxypolyethylene glycol, (meth)acrylic acid and polyethylene glycol is suitable. Further, in the present invention, the oxazoline monomer and the (meth) group having a hydrophilic functional group may be used in combination within a range which does not adversely affect the dispersion of the conductive carbon material of the obtained oxazoline polymer. Other monomers than acrylic monomers. Specific examples of the other monomer include methyl (meth)acrylate, ethyl (meth)acrylate, butyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, and (methyl). a (meth) acrylate monomer such as stearyl sulfonate, (meth)acrylic acid perfluoroethyl or (meth)acrylic acid phenyl; and an α-olefin system such as ethylene, propylene, butylene or pentene a monomer; a halogenated olefin monomer such as vinyl chloride, vinylidene chloride or vinyl fluoride; a styrene monomer such as styrene or α-methylstyrene; a carboxylic acid such as vinyl acetate or vinyl propionate. A vinyl ester-based monomer, a vinyl ether-based monomer such as methyl vinyl ether or ethyl vinyl ether, or the like may be used alone or in combination of two or more. [0040] In the monomer component used in the production of the oxazoline polymer used in the present invention, the content of the oxazoline monomer is 10% by mass from the viewpoint of further increasing the CNT dispersing ability of the oxazoline polymer obtained. The above is preferable, and it is preferably 20% by mass or more, and more preferably 30% by mass or more. Further, the upper limit of the content of the oxazoline monomer in the monomer component is 100% by mass, and in this case, a homopolymer of the oxazoline monomer can be obtained. On the other hand, from the viewpoint of further improving the water solubility of the oxazoline polymer obtained, the content of the (meth)acrylic monomer having a hydrophilic functional group in the monomer component is 10% by mass or more. Preferably, it is preferably 20% by mass or more, and more preferably 30% by mass or more. Further, the content of the other monomer in the monomer component is within the range which does not affect the CNT dispersing ability of the obtained oxazoline polymer as described above, and since it differs depending on the type, it is not impossible. It is determined sexually, but it is preferably set in the range of 5 to 95% by mass, preferably 10 to 90% by mass. The average molecular weight of the oxazoline polymer is not particularly limited, and the weight average molecular weight is preferably from 1,000 to 2,000,000. When the weight average molecular weight of the polymer is less than 1,000, the dispersibility of the conductive carbon material is remarkably lowered, or the dispersibility is not exhibited. On the other hand, when the weight average molecular weight exceeds 2,000,000, there is a fear that the operation of the dispersion treatment becomes extremely difficult. An oxazoline polymer having a weight average molecular weight of 2,000 to 1,000,000 is preferred. Further, the weight average molecular weight of the present invention is a measurement value (in terms of polystyrene) obtained by gel permeation chromatography. The oxazoline polymer which can be used in the present invention can be synthesized by radical polymerization of the above-mentioned monomer by a known method, and a commercially available product can also be obtained. As such a commercially available product, for example, Epocross WS-300 (manufactured by Nippon Shokubai Co., Ltd., solid concentration: 10% by mass, aqueous solution), Epocross WS-700 (manufactured by Nippon Shokubai, solid concentration: 25% by mass, aqueous solution), Epocross WS-500 ((Japanese) Japanese catalyst system, solid concentration 39% by mass, water / 1-methoxy-2-propanol solution), poly(2-ethyl-2-oxazoline) (Aldrich), poly ( 2-ethyl-2-oxazoline) (AlfaAesar), poly(2-ethyl-2-oxazoline) (VWR International, LLC), and the like. Further, in the case of a commercially available solution, it may be used as it is, or it may be replaced by a solvent of interest. In the present invention, the mixing ratio of the conductive carbon material dispersing agent and the conductive carbon material can be made to be about 100:1 to 1:100 by mass ratio. In addition, the concentration of the surfactant in the dispersion liquid is not particularly limited as long as the concentration of the conductive carbon material is dispersed in the solvent, and in the present invention, it is 0.001 to 50% by mass in the dispersion liquid. Preferably, it is preferably from 0.01 to 40% by mass. Further, the concentration of the conductive carbon material in the dispersion is changed depending on the mechanical properties, electrical properties, thermal properties, and the like required for the film, and at least one portion of the conductive carbon material is randomly dispersed. In the present invention, it is preferably 0.001 to 50% by mass in the dispersion, more preferably 0.01 to 40% by mass, and more preferably 0.02 to 30% by mass. Further, the conductive carbon material dispersion of the present invention may contain a crosslinking agent which is soluble in the above solvent. As the crosslinking agent, any of the compound which causes a crosslinking reaction with the dispersing agent to be used, or a self-crosslinking compound, can be reacted with the dispersing agent from the viewpoint of further improving the solvent resistance of the obtained film. A cross-linking agent is preferred. [0045] As a compound which causes a crosslinking reaction with a dispersing agent, for example, if the dispersing agent is an oxazoline polymer, it has two or more carboxyl groups, a hydroxyl group, a mercapto group, an amine group, a sulfinic acid group, an epoxy group, or the like. The compound having a functional group reactive with the oxazoline group is not particularly limited, and a compound having two or more carboxyl groups is preferred. Further, there is a functional group which causes a crosslinking reaction due to heating at the time of film formation or in the presence of an acid catalyst, for example, a sodium salt, a potassium salt, a lithium salt, an ammonium salt or the like of a carboxylic acid. It can also be used as a crosslinking agent. Specific examples of such a compound include a synthetic polymer such as polyacrylic acid or a copolymer thereof which exhibits crosslinking reactivity in the presence of an acid catalyst, and a natural high of carboxymethylcellulose or alginic acid. a metal salt of a molecule, which is a synthetic polymer and a ammonium salt of a natural polymer which exhibit cross-linking reactivity by heating, and particularly a sodium polyacrylate which exhibits crosslinking reactivity in the presence of an acid catalyst or under heating conditions. Lithium polyacrylate, ammonium polyacrylate, sodium carboxymethylcellulose, lithium carboxymethylcellulose, carboxymethylcellulose ammonium, etc. are preferred. Further, a commercially available product can be obtained by a compound which causes a crosslinking reaction with an oxazoline group, and as such a commercially available product, for example, sodium polyacrylate (manufactured by Wako Pure Chemical Industries, Ltd., polymerization degree 2,700) can be mentioned. ~7,500), sodium carboxymethylcellulose (manufactured by Wako Pure Chemical Industries, Ltd.), sodium alginate (manufactured by Kanto Chemical Co., Ltd., deer grade 1), Aron A-30 (ammonium polyacrylate, East Asian synthesis) , a solid content of 32% by mass, an aqueous solution), DN-800H (carboxymethylcellulose ammonium, manufactured by Dell Fine Chemicals Co., Ltd.), ammonium alginate (manufactured by Hicam), and the like. The self-crosslinking crosslinking agent may, for example, be an aldehyde group, an epoxy group, a vinyl group, an isocyanate group or an alkoxy group of a hydroxyl group, an aldehyde group, an amine group, an isocyanate group or a ring for a carboxyl group. An oxy group, a compound having a crosslinkable functional group which reacts with each other in the same molecule, such as an isocyanate group or an aldehyde group of an amine group, or a hydroxyl group (dehydration condensation) having a same crosslinkable functional group reacting with each other, A compound such as a mercapto group (disulfide bond), an ester group (Claisen condensation), a decyl group (dehydration condensation), a vinyl group, an acrylonitrile group or the like. Specific examples of the self-crosslinking crosslinking agent include a polyfunctional acrylate which exhibits crosslinking reactivity in the presence of an acid catalyst, a tetraalkoxynonane, a monomer having a blocked isocyanate group, and At least one block copolymer of a hydroxyl group, a carboxylic acid, an amine group, or the like. [0048] Such a self-crosslinking crosslinking agent is commercially available, and as such a commercially available product, for example, a polyfunctional acrylate such as A-9300 (ethoxylated iso-cyanuric acid) is exemplified. Triacrylate, manufactured by Shin-Nakamura Chemical Co., Ltd., A-GLY-9E (ethoxylated glycerin triacrylate (EO9mol), manufactured by Shin-Nakamura Chemical Co., Ltd.), A-TMMT (pentaerythritol tetraacrylate) , New Nakamura Chemical Industry Co., Ltd.), tetraalkoxy decane, such as tetramethoxy decane (manufactured by Tokyo Chemical Industry Co., Ltd.), tetraethoxy decane (manufactured by Toyo Chemical Co., Ltd.), with Isocyanate-based polymers such as Elastron series E-37, H-3, H38, BAP, NEW BAP-15, C-52, F-29, W-11P, MF-9, MF-25K (first industry) Pharmaceutical (share) system, etc. [0049] Each of the above-mentioned crosslinking agents may be used singly or in combination of two or more kinds. The amount of the crosslinking agent to be added varies depending on the solvent to be used, the substrate to be used, the required viscosity, the desired film shape, and the like, and is preferably 0.001 to 80% by mass, and 0.01 to 50% by mass based on the dispersing agent. Preferably, it is preferably from 0.05 to 40% by mass. In the present invention, as a catalyst for promoting the crosslinking reaction, for example, p-toluenesulfonic acid, trifluoromethanesulfonic acid, pyridinium p-toluenesulfonic acid, salicylic acid, sulfinic acid, citric acid, benzoic acid, or the like may be added. An acidic compound such as hydroxybenzoic acid or naphthalenecarboxylic acid, and/or 2,4,4,6-tetrabromocyclohexadienone, benzoin tosylate, 2-nitrobenzyl tosylate, organic A thermal acid generator such as an alkyl sulfonate. The amount of the catalyst added is 0.0001 to 20% by mass based on the dispersant, preferably 0.0005 to 10% by mass, and more preferably 0.001 to 3% by mass. Further, in the conductive carbon material dispersion of the present invention, it may be a matrix polymer. The matrix polymer may, for example, be polyvinylidene fluoride (PVdF), polytetrafluoroethylene, tetrafluoroethylene-hexafluoropropylene copolymer, or vinylidene fluoride-hexafluoropropylene copolymer [P (VDF-HFP). )], a fluorine-based resin such as vinylidene fluoride-trifluoroethylene chloride copolymer [P(VDF-CTFE)], polyvinylpyrrolidone, ethylene-propylene-diene terpolymer, PE (poly Polyolefin resin such as ethylene), PP (polypropylene), EVA (ethylene-vinyl acetate copolymer), EEA (ethylene-ethyl acrylate copolymer); PS (polystyrene), HIPS (impact resistant polymerization) Styrene), AS (acrylonitrile-styrene copolymer), ABS (acrylonitrile-butadiene-styrene copolymer), MS (methyl-styrene copolymer methacrylate), styrene-butadiene Polystyrene resin such as rubber; polycarbonate resin; vinyl chloride resin; polyamide resin; polyimine resin; sodium polyacrylate, PMMA (polymethyl methacrylate), etc. Resin; PET (polyethylene terephthalate), polybutylene terephthalate, polyethylene naphthalate, polybutylene naphthalate, PLA (polylactic acid), poly-3-hydroxybutyric acid Gathering Polyester resin such as ester, polybutylene succinate, polyethylene succinate/adipate; polyphenylene ether resin; denatured polyphenylene resin; polyacetal resin; polyfluorene resin Polyphenylene sulfide resin; polyvinyl alcohol resin; polyglycolic acid; modified starch; cellulose acetate, carboxymethyl cellulose, cellulose triacetate; chitin, chitosan; thermoplastic resin such as lignin , or polyaniline and its semi-oxide aniline green base; polythiophene; polypyrrole; polyphenylacetylene; polyphenylene; conductive polymer such as polyacetylene, and epoxy resin; urethane acrylate a phenol resin, a melamine resin, a urea resin, a thermosetting resin such as an alkyd resin, or a photocurable resin. In the conductive carbon material dispersion of the present invention, since water is suitably used as a solvent, the matrix polymer is also water-soluble. Examples of the nature include sodium polyacrylate, sodium carboxymethylcellulose, water-soluble cellulose ether, sodium alginate, polyvinyl alcohol, polystyrenesulfonic acid, polyethylene glycol, etc., and particularly suitable for polymerization. Sodium acrylate, carboxymethyl fiber Sodium. In the case of the commercially available product, for example, sodium polyacrylate (manufactured by Wako Pure Chemical Industries, Ltd., polymerization degree: 2,700 to 7,500), carboxymethyl cellulose, and the like. Sodium (made by Wako Pure Chemical Industries, Ltd.), sodium alginate (made by Kanto Chemical Co., Ltd., Deer 1), Metolose SH series (hydroxypropyl methylcellulose, Shin-Etsu Chemical Co., Ltd.), Metolose SE series (hydroxyethyl methylcellulose, manufactured by Shin-Etsu Chemical Co., Ltd.), JC-25 (completely saponified polyvinyl alcohol, manufactured by Japan VAM & POVAL Co., Ltd.), JM-17 (intermediate saponified polyvinyl alcohol, Japanese VAM & POVAL Co., Ltd., JP-03 (partially saponified polyvinyl alcohol, manufactured by VAM & POVAL Co., Ltd.), polystyrenesulfonic acid (manufactured by Aldrich Co., Ltd., solid content: 18% by mass, aqueous solution), and the like. The content of the matrix polymer is not particularly limited, and it is preferably from 0.0001 to 99% by mass in the composition, and preferably from 0.001 to 90% by mass. The method for preparing the conductive carbon material dispersion of the present invention is any one, and the surfactant, the conductive carbon material, the solvent, and the antifoaming agent are mixed in an arbitrary order, and the crosslinking agent and the matrix are used as necessary. The molecule can be used to prepare the dispersion. At this time, it is preferable to carry out dispersion treatment of a mixture composed of a surfactant, a conductive carbon material, and a solvent, and by this treatment, the dispersion ratio of the conductive carbon material can be further improved. Examples of the dispersion treatment include wet treatment using a ball mill, a bead mill, a jet mill, or the like, or ultrasonic treatment using a sink type or probe type sonicator, in particular, using a jet mill. Wet processing or ultrasonic processing of the machine is suitable. Further, since the defoaming agent is added in advance before the dispersion treatment, foaming is preferably suppressed during the dispersion treatment, but the dispersion of the conductive carbon material by the surfactant may be inhibited. It can also be added after the dispersion process. Further, the crosslinking agent or the matrix polymer may be added after preparing a dispersion containing components other than these. In the conductive carbon material dispersion prepared by the above operation, the dispersant is physically adsorbed on the surface of the conductive carbon material to form a composite. When the conductive film is produced using the conductive carbon material dispersion of the present invention, the conductive carbon material dispersion (the conductive film composition) can be applied to the substrate or the formed product on which the film is to be formed. This is produced by natural or heat drying to form a conductive adhesive layer. The substrate or the formation is not particularly limited, and metals such as copper, aluminum, nickel, gold, silver, and the like, and alloys thereof; carbon materials; metal oxides; conductive polymers; polyethylene, poly-ply Synthetic polymers such as ethylene glycol diester, polypropylene, and polyamidene; natural polymers such as cellulose and chitosan. The thickness thereof is not particularly limited, and is preferably 1 to 100 μm in the present invention. The conductive film obtained from the conductive carbon material dispersion of the present invention is present between the current collecting substrate and the active material layer constituting the electrode of the energy storage device, and particularly preferably a conductive adhesive layer for bonding the two. . In the present invention, examples of the energy storage device include an electric double layer capacitor, a lithium secondary battery, a lithium ion secondary battery, a proton polymer battery, a nickel hydrogen battery, an aluminum solid capacitor, an electrolytic capacitor, and a lead storage battery. In the energy storage device, the conductive film obtained from the conductive carbon material dispersion of the present invention is particularly suitable for use in an electrode of an electric double layer capacitor or a lithium ion secondary battery. When an electrode is produced using the composition for a conductive thin film of the present invention, it is preferred to form a composite current collector composed of a current collecting substrate and a conductive adhesive layer. This composite current collecting system can be produced by applying the above-described conductive carbon material dispersion (composition for a conductive film) on a current collecting substrate, and drying it by natural or heat drying to form a conductive adhesive layer. As the current collecting substrate, it is preferable to use it as a user of the current collecting substrate which is an electrode for an energy storage device, and for example, copper, aluminum, nickel, gold, silver, and alloys or carbon materials thereof, metal oxide can be used. A film such as a material or a conductive polymer. The thickness thereof is not particularly limited, and is preferably 1 to 100 μm in the present invention. [0056] The thickness of the conductive adhesive layer in the present invention is preferably 5 μm or less, preferably 1 μm or less, and 0.5 μm or less, in consideration of increasing the energy density of the battery and reducing the resistance of the conductive adhesive layer. Better. The thickness of the conductive adhesive layer can be calculated by observing the cross section of the conductive adhesive layer using a scanning microscope (hereinafter, SEM) or by dividing the unit weight by the specific gravity of the conductive adhesive layer. The cross section of the conductive adhesive layer can be obtained by, for example, tearing the composite current collector and processing it by an ion beam. [0057] The unit weight is the mass of the conductive adhesive layer (g) to the area of the conductive adhesive layer (m) ² When the conductive adhesive layer is formed into a pattern, the area is only the area of the conductive adhesive layer, and does not include the current collecting substrate exposed between the conductive adhesive layers formed into a pattern. The area. The quality of the conductive adhesive layer is, for example, a test piece of an appropriate size cut out from the composite current collector, and the mass W0 thereof is measured, and then the conductive adhesive layer is peeled off from the composite current collector, and the mass W1 after peeling off the conductive adhesive layer is measured. And calculating from the difference (W0-W1), or measuring the mass W2 of the collector substrate in advance, and thereafter measuring the mass W3 of the composite collector having formed the conductive bonding layer, and the difference therefrom ( W3-W2) to calculate. Examples of the method of peeling off the conductive adhesive layer include a method of dissolving the conductive adhesive layer, or immersing the conductive adhesive layer in a solvent which is swollen, and wiping off the conductive adhesive layer by a cloth or the like. [0058] The specific gravity of the conductive adhesive layer can be calculated, for example, by dividing the unit weight by the film thickness. Further, the measurement can be carried out by a bead substitution method, a tap density measurement, or the like. [0059] The film thickness can be adjusted by a known method. For example, when the conductive adhesive layer is formed by coating, the solid concentration of the coating liquid (the CNT-containing composition) for forming the conductive adhesive layer, the number of times of application, and the coating liquid of the coating machine are changed. Adjust the distance between the mouths. When it is desired to increase the unit weight, it is to increase the solid concentration, increase the number of coatings, or increase the spacing. When it is desired to reduce the unit weight or the film thickness, it is such as to reduce the solid concentration, reduce the number of coatings, or reduce the pitch. [0060] Examples of the coating method include a spin coating method, a dip coating method, a flow coating method, an inkjet method, a spray coating method, a bar coating method, a gravure coating method, and a slit coating method. Method, roll coating method, flexographic printing method, transfer printing method, brush coating method, blade coating method, air knife coating method, etc., from the viewpoint of work efficiency, etc., it is suitable for inkjet method, casting method, Dip coating method, bar coating method, knife coating method, roll coating method, gravure coating method, flexographic printing method, spray coating method. The temperature at the time of heat drying is also arbitrary, preferably about 50 to 200 ° C, and preferably about 80 to 150 ° C. [0061] Further, the energy storage device electrode can be formed by forming an active material layer on the conductive adhesive layer of the composite current collector. Here, as the active material, various active materials used in the past energy storage device electrodes can be used. For example, in the case of a lithium secondary battery or a lithium ion secondary battery, as a positive electrode active material, a chalcogen compound capable of adsorbing and desorbing lithium ions, a chalcogen compound containing lithium ions, a polyanionic compound, or the like can be used. Sulfur monomer and its compounds. As such a chalcogen compound capable of adsorbing and desorbing lithium ions, for example, FeS ₂ , TiS ₂ MoS ₂ V ₂ O ₆ V ₆ O ₁₃ MnO ₂ Wait. As a chalcogen compound containing a lithium ion, LiCoO is mentioned, for example. ₂ LiMnO ₂ LiMn ₂ O ₄ LiMo ₂ O ₄ LiV ₃ O ₈ LiNiO ₂ Li _x Ni _y M _1-y O ₂ (M), M represents at least one metal element selected from the group consisting of Co, Mn, Ti, Cr, V, Al, Sn, Pb, and Zn, and 0.05 ≦ x ≦ 1.10, 0.5 ≦ y ≦ 1.0). As the polyanionic compound, for example, LiFePO can be mentioned. ₄ Wait. As the sulfur compound, for example, Li can be mentioned ₂ S, ruthenic acid, etc. [0062] On the other hand, as the negative electrode active material constituting the above negative electrode, for example, an alkali metal, an alkali alloy, or an absorption can be used. Release at least one monomer, oxide, sulfide, nitride of lithium ion selected from elements of Groups 4 to 15 of the periodic table, or reversibly absorb. A carbon material that emits lithium ions. Examples of the alkali metal include Li, Na, and K. Specific examples of the alkali metal alloy include metals such as Li, Li-Al, Li-Mg, Li-Al-Ni, Na, and Na-Hg. Na-Zn and the like. Examples of the monomer which absorbs at least one element selected from the group 4 to 15 elements of the periodic table of lithium ions, for example, bismuth or tin, aluminum, zinc, arsenic or the like can be mentioned. Specific examples of the oxide include, for example, tin antimony oxide (SnSiO). ₃ ), lithium lanthanum oxide (Li ₃ BiO ₄ ), lithium zinc oxide (Li ₂ ZnO ₂ ), lithium titanium oxide (Li ₄ Ti ₅ O ₁₂ )Wait. Specific examples of the sulfide include lithium iron sulfide (Li _x FeS ₂ (0≦x≦3)), lithium copper sulfide (Li _x CuS (0≦x≦3)) and the like. Similarly, as the nitride, a transition metal nitride containing lithium is exemplified, and specific examples thereof include Li. _x M _y N (M=Co, Ni, Cu, 0≦x≦3, 0≦y≦0.5), lithium iron nitride (Li ₃ FeN ₄ )Wait. As reversible absorption. Examples of the carbon material that emits lithium ions include graphite, carbon black, coke, glassy carbon, carbon fiber, carbon nanotubes, or the like. Further, in the case of an electric double layer capacitor, a carbonaceous material can be used as an active material. Specific examples of the carbonaceous material include activated carbon, and the like, and examples thereof include activated carbon obtained by carbonizing a phenol resin and then activating the phenol resin. Further, in the electrode of the present invention, in addition to the above-mentioned active material, a conductive auxiliary agent may be added. Specific examples of the conductive auxiliary agent include carbon black, ketjen black, acetylene black, carbon whiskers, carbon fibers, natural graphite, artificial graphite, titanium oxide, cerium oxide, aluminum, nickel, and the like. [0065] The active material layer can be formed by applying an active material, a binder polymer, and an electrode slurry according to the solvent described above to the conductive adhesive layer, and drying it naturally or by heating. The binder polymer can be appropriately selected from known materials, and examples thereof include polyvinylidene fluoride (PVdF), polyvinylpyrrolidone, polytetrafluoroethylene, and tetrafluoroethylene-hexafluoropropylene copolymer. Vinylene fluoride-hexafluoropropylene copolymer [P(VDF-HFP)], vinylidene fluoride-trifluoroethylene chloride copolymer [P(VDF-CTFE)], polyvinyl alcohol, polyimine, Conductive polymers such as ethylene-propylene-diene terpolymer, styrene-butadiene rubber, carboxymethyl cellulose (CMC), polyacrylic acid (PAA), and polyaniline. Further, the amount of the binder polymer added is 0.1 to 20 parts by mass, particularly preferably 1 to 10 parts by mass, per 100 parts by mass of the active material. The solvent which is exemplified as the above-mentioned oxazoline polymer may be appropriately selected from the above-mentioned types of the binder, and in the case of a water-insoluble binder such as PVdF, NMP is suitable. In the case of a water-soluble binder such as PAA, water is suitable. [0066] The coating method of the electrode slurry is the same as the above-described composition for forming a conductive adhesive layer. Further, the temperature at the time of heat drying may be any, preferably from 50 to 200 ° C, preferably from 80 to 150 ° C. [0067] The energy storage device of the present invention includes the electrode, and more specifically, at least one of a positive and a negative electrode including at least one pair of positive and negative electrodes, a spacer separating the electrodes, and an electrolyte. It is composed of the above-mentioned energy storage device electrodes. Since the energy storage device is characterized in that the electrode of the energy storage device is used as an electrode, a spacer or an electrolyte or the like of other device constituent members can be appropriately selected from known materials. Specific examples of the spacer include a cellulose spacer, a polyolefin spacer, and the like. The electrolyte can be either a liquid or a solid, and can be either a water-based or non-aqueous system. The electrode for an energy storage device of the present invention can also be practically used when it is applied to a device using a non-aqueous electrolyte. Performance. [0068] The nonaqueous electrolyte solution is a nonaqueous electrolyte solution obtained by dissolving an electrolyte salt in a nonaqueous organic solvent. Examples of the electrolyte salt include lithium salts such as lithium tetrafluoroborate, lithium hexafluorophosphate, lithium perchlorate, and lithium trifluoromethanesulfonate; tetramethylammonium hexafluorophosphate and tetraethylammonium a quaternary ammonium salt such as fluorophosphate, tetrapropylammonium hexafluorophosphate, methyltriethylammonium hexafluorophosphate, tetraethylammonium tetrafluoroborate or tetraethylammonium perchlorate. Examples of the nonaqueous organic solvent include alkyl carbonate such as propyl carbonate, ethyl carbonate, and butyl carbonate; dimethyl carbonate, methyl ethyl carbonate, and diethyl carbonate. A dialkyl carbonate such as a nitrile such as acetonitrile or a guanamine such as dimethylformamide. [Examples] Hereinafter, the present invention will be specifically described by way of Production Examples, Examples and Comparative Examples, but the present invention is not limited by the following examples. Further, the measuring device used is as follows. (1) Probe-type ultrasonic irradiation device: manufactured by Hielscher Ultrasonics Co., Ltd., UIP1000 (2) Bar coater (film production) Device: (share) SMT made PM-9050MC (3) Selectable roll (select-roller )) Preparation of precursor dispersion of OSP-30, OSP-13, OSP-8 [1970] [Production Example 1-1] Epocross WS mixing an aqueous solution containing an oxazoline polymer -700 (manufactured by Nippon Shokubai Co., Ltd., solid content concentration 25% by mass, weight average molecular weight 4×10 ⁴ The amount of the oxazoline group was 4.5 mmol/g, 2.0 g, and 47.5 g of distilled water, and 0.5 g of a multilayer CNT ("NC7000" manufactured by Nanocyl Co., Ltd.) of a conductive carbon material was further mixed. The obtained mixture was subjected to ultrasonic treatment at room temperature for 30 minutes using a probe type ultrasonic irradiation device, and was prepared to uniformly disperse the CNT to form the precursor dispersion A. [Production Example 1-2] The mixture contains ammonium polyacrylate (PAA-NH) ₄ Aron A-30 (East Asian synthesis (stock), solid concentration 31.6% by mass) 0.7g, ammonium alginate (alginic acid NH) ₄ (2 g of 1% aqueous solution of (()), and 29.3 g of distilled water. The obtained solution was mixed with 50 ml of the precursor dispersion liquid A before the production example 1-1 to prepare a precursor dispersion liquid B in which CNTs were uniformly dispersed. [Production Example 1-3] The same procedure as in Production Example 1-1 was carried out except that the conductive carbon material was changed to 0.5 g of acetylene black ("Denka Black" manufactured by Denki Kagaku Co., Ltd.). Into the precursor dispersion C. [Production Example 1-4] The conductive precursor dispersion liquid D was prepared in the same manner as in Production Example 1-2 except that the precursor dispersion liquid A was changed to the precursor dispersion liquid C. [2] Preparation of Conductive Carbon Material Dispersion [Example 1-1] Preparation of precursor dispersion B50g prepared in Mixed Production Example 1-2, and acetylene surfactant (antifoaming agent) Olfine E- 1004 (manufactured by Nissin Chemical Industry Co., Ltd., solid content: 100% by mass) 25 mg, and prepared into a conductive carbon material dispersion. [Example 1-2] Except that the acetylene-based surfactant Olfine E-1004 was changed to 25 mg of the acetylene-based surfactant Surfynol 420 (solid content: 100% by mass, manufactured by Nissin Chemical Industry Co., Ltd.) Others were prepared into a conductive carbon material dispersion in the same manner as in Example 1-1. [Example 1-3] The precursor dispersion D 50 prepared in Mixed Production Example 1-4, and the acetylene surfactant Olfine E-1004 (manufactured by Nissin Chemical Industry Co., Ltd., solid concentration 100) Mass%) 25 mg, which was prepared into a conductive carbon material dispersion. [Example 1-4] Except that the acetylene-based surfactant Olfine E-1004 was changed to 25 mg of the acetylene-based surfactant Surfynol 420 (solid content: 100% by mass, manufactured by Nissin Chemical Industry Co., Ltd.) Others were prepared into a conductive carbon material dispersion in the same manner as in Example 1-3. [Example 1-5] The acetylene-based surfactant Olfine E-1004 was changed to a polyfluorene-based defoamer Polyflow KL100 (manufactured by Kyoeisha Chemical Co., Ltd., solid concentration: 100% by mass) 25 mg. Other than the same procedure as in Example 1-1, a conductive carbon material dispersion was prepared. [Example 1-6] The acetylene-based surfactant Olfine E-1004 was changed to a metal soap-based antifoaming agent, Nopko NXZ (manufactured by Sannoteco Co., Ltd., solid content: 100% by mass) Other than the 25 mg, the same procedure as in Example 1-1 was carried out to prepare a conductive carbon material dispersion. [Example 1-7] In addition to changing the acetylene surfactant Olfine E-1004 to an acrylic defoamer Polyflow KL800 (manufactured by Kyoeisha Chemical Co., Ltd., solid concentration 93% by mass) 26.9 mg Others were prepared into a conductive carbon material dispersion in the same manner as in Example 1-1. [Comparative Example 1-1] The acetylene-based surfactant Olfine E-1004 was changed to a polyether-based antifoaming agent SN Defoamer 170 (manufactured by Sannocop Co., Ltd., solid content: 100% by mass) 25 mg. Other than the other method, the conductive carbon material dispersion liquid was prepared in the same manner as in the operation 2-1. [Comparative Example 1-2] The acetylene-based surfactant Olfine E-1004 was changed to a polyether-based defoamer SN Defoamer 260 (manufactured by Sannoteco Co., Ltd., solid concentration: 100% by mass) 25 mg. Other than the same procedure as in Example 1-1, a conductive carbon material dispersion was prepared. [Comparative Example 1-3] The acetylene-based surfactant Olfine E-1004 was changed to a polyether-based antifoaming agent, Disfoam CC-438 (solid content: 100% by mass, manufactured by Nippon Oil Co., Ltd.), 25 mg. Others were prepared into a conductive carbon material dispersion in the same manner as in Example 1-1. [Comparative Example 1-4] The acetylene-based surfactant Olfine E-1004 was changed to a polyether-based antifoaming agent, Disfoam CD-432 (solid content: 100% by mass, manufactured by Nippon Oil Co., Ltd.), 25 mg. Others were prepared into a conductive carbon material dispersion in the same manner as in Example 1-1. [Comparative Example 1-5] The acetylene-based surfactant Olfine E-1004 was changed to a polyether-based antifoaming agent, Disfoam CE-457 (solid stock concentration: 100% by mass, manufactured by Nippon Oil Co., Ltd.), 25 mg. Others were prepared into a conductive carbon material dispersion in the same manner as in Example 1-1. [Comparative Example 1-6] In addition to changing the acetylene-based surfactant Olfine E-1004 to a polyether-based antifoaming agent defoamer PF-H (manufactured by Wako Pure Chemical Industries, Ltd.), the solid concentration was 100%. In the same manner as in Example 1-1 except that %) was 25 mg, a conductive carbon material dispersion liquid was prepared. [Comparative Example 1-7] In addition to changing the acetylene-based surfactant Olfine E-1004 to a polyether-based antifoaming agent defoamer PF-M (manufactured by Wako Pure Chemical Industries, Ltd.), the solid concentration was 100%. In the same manner as in Example 1-1 except that %) was 25 mg, a conductive carbon material dispersion liquid was prepared. [Comparative Example 1-8] In addition to changing the acetylene-based surfactant Olfine E-1004 to a polyether-based antifoaming agent defoamer PF-L (manufactured by Wako Pure Chemical Industries, Ltd.), the solid concentration was 100%. Other than the above, except for 25 mg, a conductive carbon material dispersion was prepared in the same manner as in Example 2-1. [Comparative Example 1-9] The acetylene-based surfactant Olfine E-1004 was changed to a fluorine-based antifoaming agent Flowlen AO-82 (manufactured by Sannocop Co., Ltd., solid content: 1.8% by mass) 25 mg. Other than the same procedure as in Example 1-1, a conductive carbon material dispersion was prepared. [Comparative Example 1-10] Except that the acetylene-based surfactant Olfine E-1004 was changed to a polyether-based antifoaming agent, Disfoam CD-432 (solid stock concentration: 100% by mass, manufactured by Nippon Oil Co., Ltd.), 25 mg. Others were prepared into a conductive carbon material dispersion in the same manner as in Example 1-3. [3] Evaluation of Conductive Carbon Material Dispersion [Example 2-1] The conductive carbon material dispersion prepared in Example 1-1 was added to a spiral tube (manufactured by Maruemu, No. 8). ), shaking with a hand for 30 seconds to make bubbles. After standing for 300 seconds, the liquid state of the conductive carbon material dispersion and the amount of bubbles on the liquid surface were visually confirmed. As a result, the liquid state of the conductive carbon material dispersion is maintained, and the bubbles disappear and float to the surface. [Example 2-2] The same procedure as in Example 2-1 was carried out except that the conductive carbon material dispersion was changed to the conductive carbon material dispersion prepared in Example 1-2. As a result, the liquid state of the conductive carbon material dispersion is maintained, and the bubbles disappear and float to the surface. [Example 2-3] The same procedure as in Example 2-1 was carried out except that the conductive carbon material dispersion was changed to the conductive carbon material dispersion prepared in Example 1-3. As a result, the liquid state of the conductive carbon material dispersion is maintained, and the bubbles disappear and float to the surface. [Example 2-4] The same procedure as in Example 2-1 was carried out except that the conductive carbon material dispersion was changed to the conductive carbon material dispersion prepared in Example 1-4. As a result, the liquid state of the conductive carbon material dispersion is maintained, and the bubbles disappear and float to the surface. [Example 2-5] The same procedure as in Example 2-1 was carried out except that the conductive carbon material dispersion was changed to the conductive carbon material dispersion prepared in Example 1-5. As a result, the liquid state of the conductive carbon material dispersion changes and the CNT becomes agglomerated, but the bubble disappears and floats out of the liquid surface. [Example 2-6] The same procedure as in Example 2-1 was carried out except that the conductive carbon material dispersion was changed to the conductive carbon material dispersion prepared in Example 1-6. As a result, the liquid state of the conductive carbon material dispersion changes and becomes agglomerated, but the bubbles disappear and float out of the liquid surface. [Example 2-7] The same procedure as in Example 2-1 was carried out except that the conductive carbon material dispersion was changed to the conductive carbon material dispersion prepared in Example 1-7. As a result, the liquid state of the conductive carbon material dispersion changes and the CNT becomes agglomerated, but the bubble disappears and floats out of the liquid surface. [Comparative Example 2-1] The same procedure as in Example 2-1 was carried out except that the conductive carbon material dispersion was changed to the conductive carbon material dispersion prepared in Comparative Example 1-1. As a result, the liquid state of the conductive carbon material dispersion changes, the CNTs become agglomerated, and the liquid surface is covered by the bubbles. [Comparative Example 2-2] The same procedure as in Example 2-1 was carried out except that the conductive carbon material dispersion was changed to the conductive carbon material dispersion prepared in Comparative Example 1-2. As a result, the liquid state of the conductive carbon material dispersion changes, the CNTs become agglomerated, and the liquid surface is covered by the bubbles. [Comparative Example 2-3] The same procedure as in Example 2-1 was carried out except that the conductive carbon material dispersion was changed to the conductive carbon material dispersion prepared in Comparative Example 1-3. As a result, the liquid state of the conductive carbon material dispersion changes, the CNTs become agglomerated, and the liquid surface is covered by the bubbles. [Comparative Example 2-4] The same procedure as in Example 2-1 was carried out except that the conductive carbon material dispersion was changed to the conductive carbon material dispersion prepared in Comparative Example 1-4. As a result, the liquid state of the conductive carbon material dispersion changes, the CNTs become agglomerated, and the liquid surface is covered by the bubbles. [Comparative Example 2-5] The same procedure as in Example 2-1 was carried out except that the conductive carbon material dispersion was changed to the conductive carbon material dispersion prepared in Comparative Example 1-5. As a result, the liquid state of the conductive carbon material dispersion changes, the CNTs become agglomerated, and the liquid surface is covered by the bubbles. [Comparative Example 2-6] The same procedure as in Example 2-1 was carried out except that the conductive carbon material dispersion was changed to the conductive carbon material dispersion prepared in Comparative Example 1-6. As a result, the liquid state of the conductive carbon material dispersion is maintained, but the liquid surface is covered with bubbles. [Comparative Example 2-7] The same procedure as in Example 2-1 was carried out except that the conductive carbon material dispersion was changed to the conductive carbon material dispersion prepared in Comparative Example 1-7. As a result, the liquid state of the conductive carbon material dispersion is maintained, but the liquid surface is covered with bubbles. [Comparative Example 2-8] The same procedure as in Example 2-1 was carried out except that the conductive carbon material dispersion was changed to the conductive carbon material dispersion prepared in Comparative Example 1-8. As a result, the liquid state of the conductive carbon material dispersion is maintained, but the liquid surface is covered with bubbles. [Comparative Example 2-9] The same procedure as in Example 2-1 was carried out except that the conductive carbon material dispersion was changed to the conductive carbon material dispersion prepared in Comparative Example 1-9. As a result, the liquid state of the conductive carbon material dispersion changes, the CNTs become agglomerated, and the liquid surface is covered by the bubbles. [Comparative Example 2-10] The same procedure as in Example 2-1 was carried out except that the conductive carbon material dispersion was changed to the conductive carbon material dispersion prepared in Comparative Example 1-10. As a result, the liquid state of the conductive carbon material dispersion changes, and acetylene black aggregates, and the liquid surface is covered with bubbles. [Comparative Example 2-11] The same procedure as in Example 2-1 was carried out except that the conductive carbon material dispersion liquid was prepared in the same manner as in Example 2-1 except that the precursor dispersion liquid B was prepared in Production Example 1-2. As a result, the liquid state of the conductive carbon material dispersion is maintained, but the liquid surface is covered with bubbles. [Comparative Example 2-12] The same procedure as in Example 2-1 was carried out except that the conductive carbon material dispersion liquid was changed to the preparation precursor dispersion liquid D in Production Example 1-4. As a result, the liquid state of the conductive carbon material dispersion is maintained, but the liquid surface is covered with bubbles. The above Examples 2-1 to 2-7 and Comparative Examples 2-1 to 2-12 are shown in Table 1. [Table 1] As shown in Table 1, Comparative Examples 2-1 to 2-8 and 2-10 containing a polyether surfactant, and conductive carbon materials prepared by Comparative Examples 2 to 9 containing a fluorine-based surfactant In the dispersion liquid and the conductive carbon material dispersion prepared in Comparative Examples 2-11 and 12 in which the surfactant was not added as the antifoaming agent, bubbles were not immediately removed. On the other hand, Examples 2-1 to 2-4 further containing an acetylene-based antifoaming agent, Examples 2 to 5 containing a polyfluorene-based surfactant, and Examples 2 to 6 containing a metal soap-based antifoaming agent The bubbles in the conductive carbon material dispersion prepared in Example 2-7 containing the acrylic antifoaming agent disappeared immediately. Further, Examples 2 to 5 containing a polyoxo-based surfactant, Examples 2 to 6 containing a metal soap-based antifoaming agent, and Conductive carbon materials prepared in Examples 2 to 7 containing an acrylic antifoaming agent In the dispersion, the bubbles immediately disappear, but the liquid state of the conductive carbon material dispersion changes to cause aggregation. On the other hand, in the conductive carbon material dispersion prepared in Examples 2-1 to 2-4 containing the acetylene-based antifoaming agent, the bubbles immediately disappeared and the uniform dispersion state was maintained. [4] Coating of Conductive Carbon Material Dispersion [Example 3-1] Conductive carbon prepared in Example 1-1 was obtained by a wire bar coater (selective roll: OSP-30) The material dispersion was uniformly spread on an aluminum foil (thickness: 15 μm), and then dried at 150 ° C for 20 minutes to obtain an aluminum foil (hereinafter, a composite current collector) having a uniform conductive adhesive layer having no coating defects. Cut the obtained composite collector into 120cm ² After the area was measured and mass-measured, the conductive adhesive layer was removed by scrubbing with a 0.1 mol/L dilute aqueous hydrochloric acid solution. The mass measurement of the residual aluminum foil was carried out, and the mass change of the conductive adhesive layer was determined by dividing the mass change before and after the removal of the conductive adhesive layer by 268 mg/m. ² . Further, as a result of observing the cross section of the composite current collector by SEM observation, the film thickness was 0.199 μm. The specific gravity of the conductive adhesive layer obtained from this value is 1.35 g/cm. ³ . [Example 3-2] A composite current collector was obtained in the same manner as in Example 3-1 except that the selective roll: OSP-30 was changed to the selective roll: OSP-13. The result of obtaining the unit weight of the obtained conductive adhesive layer was 147 mg/m. ² . The film thickness calculated from the unit weight and the specific gravity determined in Example 3-1 was 0.109 μm. [Example 3-3] A composite current collector was obtained in the same manner as in Example 3-1 except that the selective roll: OSP-30 was changed to the selective roll: OSP-8. The result of obtaining the unit weight of the obtained conductive adhesive layer was 93 mg/m. ² . The film thickness calculated from the unit weight and the specific gravity determined in Example 3-1 was 0.069 μm. [Example 3-4] The same procedure as in Example 3-1 was carried out except that 50 g of pure water was added to 10 g of the conductive carbon material dispersion prepared in Example 1-1 to be diluted, and a composite set was obtained. Electric body. The result of obtaining the unit weight of the obtained conductive adhesive layer was 19 mg/m. ² . The film thickness calculated from the unit weight and the specific gravity determined in Example 3-1 was 0.014 μm.

Claims (27)

A conductive carbon material dispersion comprising a conductive carbon material and one selected from the group consisting of an acetylene surfactant, a polyoxon surfactant, a metal soap surfactant, and an acrylic surfactant More than 2 kinds of defoamers. The conductive carbon material dispersion according to claim 1, wherein the antifoaming agent comprises an acetylene surfactant. The conductive carbon material dispersion according to claim 1 or 2, further comprising a conductive carbon material dispersing agent having an interfacial activity, and a dispersing medium. The conductive carbon material dispersion according to any one of claims 1 to 3, wherein the conductive carbon material comprises one or more selected from the group consisting of graphite, carbon black, and carbon nanotubes. The conductive carbon material dispersion according to any one of claims 1 to 4, wherein the conductive carbon material comprises a carbon nanotube. The conductive carbon material dispersion according to any one of claims 3 to 5, wherein the dispersion medium contains water. The conductive carbon material dispersion according to any one of claims 3 to 6, wherein the conductive carbon material dispersant comprises a polymer having an oxazoline group in a side chain. The conductive carbon material dispersion according to claim 7, wherein the polymer having an oxazoline group in the side chain is a polymer of an oxazoline monomer represented by the following formula (1); In the formula, X represents a polymerizable carbon-carbon double bond group, and R ¹ to R ⁴ each independently represent a hydrogen atom, a halogen atom, an alkyl group having 1 to 5 carbon atoms, an aryl group having 6 to 20 carbon atoms, or carbon. A number of 7 to 20 aralkyl groups. The conductive carbon material dispersion according to claim 8, wherein the chain hydrocarbon group containing a polymerizable carbon-carbon double bond is an alkenyl group having 2 to 8 carbon atoms. The conductive carbon material dispersion according to claim 8, wherein the oxazoline monomer is selected from the group consisting of 2-vinyl-2-oxazoline, 2-vinyl-4-methyl-2-oxazoline, 2 -vinyl-4-ethyl-2-oxazoline, 2-vinyl-4-propyl-2-oxazoline, 2-vinyl-4-butyl-2-oxazoline, 2-ethylene 5-methyl-2-oxazoline, 2-vinyl-5-ethyl-2-oxazoline, 2-vinyl-5-propyl-2-oxazoline, 2-vinyl- 5-butyl-2-oxazoline, 2-isopropenyl-2-oxazoline, 2-isopropenyl-4-methyl-2-oxazoline, 2-isopropenyl-4-ethyl -2-oxazoline, 2-isopropenyl-4-propyl-2-oxazoline, 2-isopropenyl-4-butyl-2-oxazoline, 2-isopropenyl-5- 2-oxazoline, 2-isopropenyl-5-ethyl-2-oxazoline, 2-isopropenyl-5-propyl-2-oxazoline and 2-isopropenyl-5- One or two or more kinds of butyl-2-oxazolines are in groups. The conductive carbon material dispersion according to claim 10, wherein the oxazoline monomer is 2-isopropenyl-2-oxazoline. The conductive carbon material dispersion according to any one of claims 1 to 11, which comprises a crosslinking agent. The conductive carbon material dispersion according to claim 12, wherein the crosslinking agent comprises a compound which causes a crosslinking reaction with the oxazoline group. The conductive carbon material dispersion according to claim 13, wherein the compound which causes the crosslinking reaction with the oxazoline group comprises a metal salt of a synthetic polymer which is selected from the group consisting of an acid catalyst and a natural polymer A metal salt and a compound of an ammonium salt of a synthetic polymer which exhibits cross-linking reactivity by heating and an ammonium salt of a natural polymer. The conductive carbon material dispersion according to claim 14, wherein the compound which causes crosslinking reaction with the oxazoline group comprises a selected from the group consisting of lithium polyacrylate, sodium polyacrylate, ammonium polyacrylate, lithium carboxymethyl cellulose, and carboxymethyl group. A compound of sodium cellulose, carboxymethylcellulose ammonium, and ammonium alginate. The conductive carbon material dispersion according to any one of claims 1 to 15, which comprises a polymer which becomes a matrix. A conductive adhesive layer obtained by the conductive carbon material dispersion according to any one of claims 1 to 16. The conductive adhesive layer of claim 17, wherein the thickness is 5 μm or less. The conductive adhesive layer of claim 17, wherein the thickness is 1 μm or less. The conductive adhesive layer of claim 17, wherein the thickness is 0.5 μm or less. A composite current collector for an electrode of an energy storage device, comprising a current collecting substrate, and a conductive adhesive layer according to any one of claims 17 to 20 formed on the substrate. An electrode for an energy storage device comprising a composite collector for an electrode of the energy storage device of claim 21. An electrode for an energy storage device according to claim 22, comprising the composite collector for an electrode of the energy storage device of claim 21, and an active material layer formed on the conductive adhesive layer of the composite collector. An energy storage device comprising an electrode for an energy storage device as claimed in claim 22 or 23. An energy storage device according to claim 24, which is a lithium ion secondary battery. A method for producing a foaming-inhibited conductive carbon material dispersion, characterized by mixing a conductive carbon material, a conductive carbon material dispersing agent having an interfacial activity, a dispersing medium, and an acetylene surfactant. A defoaming method for a conductive carbon material dispersion liquid, characterized by mixing a conductive carbon material, a conductive carbon material dispersing agent having an interfacial activity, a dispersing medium, and an acetylene surfactant.