Provided are a carbon nanotube production device and production method capable of realizing high-temperature heating of a catalyst raw material in a floating catalyst chemical vapor deposition (FCCVD) method, and improving the quality and yield of carbon nanotubes synthesized. A carbon nanotube production device 1 includes a synthesis furnace 2 for synthesizing carbon nanotubes; a catalyst raw material supplying nozzle 3 for supplying a catalyst raw material used to synthesize carbon nanotubes to the synthesis furnace 2; and a nozzle temperature adjusting unit 6 capable of setting a temperature of an inner portion 4 of the catalyst raw material supplying nozzle 3 higher than a temperature of a reaction field 5 of the synthesis furnace 2. By supplying to the synthesis furnace 2 the catalyst raw material that has been thermally decomposed after being heated to a temperate at which a catalyst metal will not yet be condensed, and by having the thermally decomposed catalyst raw material rapidly cooled to a CVD temperature at the synthesis furnace 2, microscopic catalyst metal particles will be generated at a high density in the space of the reaction field 5 such that carbon nanotubes having a small diameter can be vapor-grown at a high density.
A carbon nanotube collection apparatus includes: a collection room having an opening part communicating with a carbon nanotube production apparatus; a winding member arranged inside the collection room and configured to wind a carbon nanotube passed through the opening part from the carbon nanotube production apparatus to form a carbon nanotube wound body; and a separation mechanism configured to move the carbon nanotube wound body from a base end side toward a tip end side of the winding member to separate the carbon nanotube wound body from the winding member.
B65H 67/04 - Arrangements for removing completed take-up packages and replacing by cores, formers, or empty receptacles at winding or depositing stations; Transferring material between adjacent full and empty take-up elements
This carbon nanotube recovering device is for recovering carbon nanotubes, and comprises: a winding chamber; a recovery chamber; a first gas discharge line for discharging a gas supplied to the recovery chamber; and a second gas discharge line for discharging a gas supplied to the winding chamber. The recovery chamber has: a first opening connected to the winding chamber; and an open/close mechanism that opens and closes the first opening. It is possible to change among discharging of gas from the first gas discharge line, discharging of gas from the second gas discharge line, and discharging of gas from both of the first and second gas discharge lines.
An apparatus for recovering carbon nanotubes which is equipped with a recovery chamber for recovering carbon nanotubes, wherein: the recovery chamber has a housing and a storage container provided below the housing; the housing has a first opening which is connected to an apparatus for producing carbon nanotubes, an opening/closing mechanism for opening and closing the first opening, and a second opening which is connected to the storage container; and the storage container is removably attached to the housing.
Provided is a new method capable of highly efficiently producing high-purity monolayer carbon nanotubes without the fear of a reduction in the strength of a reaction tube. This production method for carbon nanotubes by floating catalyst chemical vapor deposition (FC-CVD) comprises: a step for heating a raw material for carbon nanotubes in the presence of an iron-containing catalyst and an alkali metal compound to generate carbon nanotubes.
The present invention provides an apparatus for recovering carbon nanotubes, the apparatus comprising: a recovery chamber which has an opening that leads to a carbon nanotube generation device; a winding member which is arranged within the recovery chamber so as to wind carbon nanotubes that have passed through the opening from the carbon nanotube generation device, thereby forming a carbon nanotube wound body; and a separation mechanism which separates the carbon nanotube wound body from the winding member by moving the carbon nanotube wound body from the base end side to the tip end side of the winding member.
The electrode structure for electronic devices according to the present invention comprises a powdered electrode material, and carbon nanotubes having a volume resistivity of not more than 2×10−2 Ω·cm.
H01B 1/04 - Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of carbon-silicon compounds, carbon, or silicon
H01G 11/36 - Nanostructures, e.g. nanofibres, nanotubes or fullerenes
H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
H01G 11/24 - Electrodes characterised by the structural features of powders or particles used therefor
A CNT production apparatus 1 provided by the present invention includes a cylindrical chamber 10 and a control valve 60 provided to a gas discharge pipe 50. The chamber 10 includes a reaction zone provided in a partial range of the chamber 10 in the direction of the cylinder axis, a deposition zone 22 which is provided downstream of the reaction zone 20, and a deposition state detector 40 that detects a physical property value indicating a deposition state of carbon nanotubes in the deposition zone 22. The apparatus is configured to close the control valve 60 and deposit carbon nanotubes in the deposition zone 22 when the physical property value detected by the deposition state detector 40 is equal to or less than a predetermined threshold value, and configured to open the control valve 60 and recover the carbon nanotubes deposited in the deposition zone 22 when the physical property value exceeds the predetermined threshold value.
Provided are a carbon nanotube production device and production method capable of realizing high-temperature heating of a catalyst raw material in a floating catalyst chemical vapor deposition (FCCVD) method, and improving the quality and yield of carbon nanotubes synthesized. A carbon nanotube production device 1 includes a synthesis furnace 2 for synthesizing carbon nanotubes; a catalyst raw material supplying nozzle 3 for supplying a catalyst raw material used to synthesize carbon nanotubes to the synthesis furnace 2; and a nozzle temperature adjusting unit 6 capable of setting a temperature of an inner portion 4 of the catalyst raw material supplying nozzle 3 higher than a temperature of a reaction field 5 of the synthesis furnace 2. By supplying to the synthesis furnace 2 the catalyst raw material that has been thermally decomposed after being heated to a temperate at which a catalyst metal will not yet be condensed, and by having the thermally decomposed catalyst raw material rapidly cooled to a CVD temperature at the synthesis furnace 2, microscopic catalyst metal particles will be generated at a high density in the space of the reaction field 5 such that carbon nanotubes having a small diameter can be vapor-grown at a high density.
A negative electrode active material for a rechargeable battery of the present invention includes a silicon composite composed of a silicon compound and at least one carbon material of graphite, non-graphitizable carbon, and soft carbon, a self-assembled monolayer which covers the surface of the silicon composite and has amino groups, and a carbon compound that is bonded to the self-assembled monolayer via the amino groups and contains carbon atoms as a main component.
2 is in the range of 1.0-2.3; and a step for bringing a gas, which is present in the environment in which the material (A) is being heated to 1200° C. or higher, into contact with a feed gas to generate carbon nanotubes.
B82Y 30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites
B82Y 40/00 - Manufacture or treatment of nanostructures
12.
Positive electrode for lithium-ion rechargeable battery, lithium-ion rechargeable battery, and method for producing positive electrode for lithium-ion rechargeable battery
There is provided a positive electrode for a lithium-ion rechargeable battery in which it is possible to achieve both exceptional electrical conductivity and adhesion of an electrode active material to a current collector and it is possible to dramatically improve battery characteristics compared to those in the related art. A positive electrode for a lithium-ion rechargeable battery includes a current collector; and an electrode active material-containing layer provided on the current collector, wherein the electrode active material-containing layer contains active material particles and a conductive material that connects the active material particles to each other; wherein the mass ratio of the active material particles:the conductive material:other components in the electrode active material-containing layer is 95 to 99.7:0.3 to 5:0 to 1, wherein the conductive material includes a first elongated carbon material having a first length and a second elongated carbon material having a second length larger than the first length, and wherein the ratio of the second length to the first length is 2 or more and 50 or less.
Provided are a manufacturing apparatus and a manufacturing method for a carbon nanotube, which can achieve high-temperature heating of a catalyst raw material in a floating catalyst chemical vapor deposition (FCCVD) method, and can improve the quality and the yield of synthesized carbon nanotubes. The manufacturing apparatus 1 for a carbon nanotube comprises: a synthesis furnace 2 that synthesizes a carbon nanotube; a catalyst raw material supply nozzle 3 that supplies, to the synthesis furnace 2, a catalyst raw material for synthesizing the carbon nanotube; and a nozzle temperature adjustment means 6 which can set the temperature of a cavity part 4 of the catalyst raw material supply nozzle 3 to be higher than the temperature of a reaction field 5 of the synthesis furnace 2. The catalyst raw material is heated to a temperature at which catalyst metal is not condensed, the thermally decomposed catalyst raw material is supplied to the synthesis furnace 2, and the thermally decomposed catalyst raw material is rapidly cooled to the CVD temperature in the synthesis furnace 2 to generate fine catalyst metal particles at high density in a space of the reaction field 5, so that the carbon nanotube having a small diameter can be vapor-phase-grown at high density.
Provided are a method and a device for purifying carbon nanotubes, wherein the vapor pressure of an etching agent at 25°C is lower than 100 Pa so that the leaked etching agent, if any, is precipitated in the form of liquid droplets or a powder and thus the risk of accidents can be largely reduced. The method for purifying carbon nanotubes comprises heating catalytic metal-containing carbon nanotubes 1, which are synthesized by using a catalytic metal 2, and a metal halide 15 and thus bringing the vapor of the metal halide 15 into contact with the catalytic metal-containing carbon nanotubes 1 to thereby remove the catalytic metal 2.
2322322 is in the range of 1.0-2.3; and a step for bringing a gas, which is present in the environment in which the material (A) is being heated to 1200°C or higher, into contact with a feed gas to generate carbon nanotubes.
An electrode structure for electronic devices according to the present invention comprises: an electrode material in the form of a powder; and carbon nanotubes having a volume resistivity of 2 × 10-2 Ω·cm or less.
A CNT manufacturing device 1 provided by the present invention is provided with a cylindrical chamber 10, and a control valve 60 provided to an exhaust pipe 50. The chamber 10 is provided with a reaction zone 20 provided in a partial range of the chamber 10 in the cylinder axial direction of the chamber 10, an accumulation zone 22 provided downstream relative to the reaction zone 20, and an accumulation state sensing unit 40 for sensing a physical value indicating the accumulation state of carbon nanotubes in the accumulation zone 22. The present invention is configured so that the control valve 60 is closed and carbon nanotubes accumulate in the accumulation zone 22 when the physical value sensed by the accumulation state sensing unit 40 is equal to or less than a threshold value, and the control valve 60 is opened and carbon nanotubes accumulated in the accumulation zone 22 are recovered when the physical value exceeds the predetermined threshold value.
Disclosed is a manufacturing method which comprises: loading a liquid medium into a dispersing container; loading carbon nanotubes into the dispersing container and adjusting the viscosity of the contents of the dispersing container to a prescribed load target value; and subjecting the contents of the dispersing container to a dispersion treatment using an annular gap type bead mill to achieve a prescribed dispersion target value for the viscosity of the contents. This manufacturing method is characterized in that the loading of the carbon nanotubes and the dispersion treatment are repeated until the carbon nanotube concentration in the contents of the dispersing container reaches a desired value. According to this manufacturing method, even a high concentration carbon nanotube dispersion can be homogeneously dispersed.
B01J 13/00 - Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
20.
Process and apparatus for producing composite material that includes carbon nanotubes
A process and an apparatus for producing a composite material utilize a rotatable hollow body that is inclined with an upstream side being higher than a downstream side. A reaction zone is defined within an elongated chamber in the hollow body. Protrusions inwardly extend from an inner peripheral wall of the hollow body adjacent to the reaction zone. Base material is input into the chamber via a base material introduction port and a carbon source vapor is input into the chamber via a carbon source supply port. A heater heats the reaction zone to a temperature at which carbon nanotubes form on the base material from the carbon source vapor. The protrusions catch base material disposed on the inner peripheral wall of the hollow body when the hollow body rotates and then drop the base material through the reaction zone so that the base material contacts the carbon source vapor.
The present invention provides a carbon nanotube dispersion, in which carbon nanotubes are uniformly dispersed and a satisfactory dispersed state is maintained over a long period of time, and also inherent properties of carbon nanotubes can be exhibited. The carbon nanotube dispersion contains an alcohol solvent (preferably a lower alcohol having about 1 to 4 carbon atoms) and a polyvinyl acetal resin.
Disclosed is a method of producing a cell culture vessel (10) having a carbon nanotube (CNT) layer (14) on its surface. The method comprises the steps of providing a vessel (12) having a predetermined shape; providing a CNT dispersion of a CNT material composed primarily of CNT dispersed in a dispersion medium at a concentration of not more than 50 mg/L; and forming the carbon nanotube layer (14) on the surface of the vessel (12). The formation of the CNT layer (14) is achieved by alternately repeating a supply step of applying the CNT dispersion solution to the vessel (12) and a drying step of drying the applied dispersion solution one or more times.
A method for producing a carbon nanotube-containing conductor having a conductive layer on the surface of an objective substrate, the method including: pressing a carbon nanotube network layer, via a release substrate having the carbon nanotube network layer thereon, against a transparent objective substrate coated with an electron beam-curable liquid resin composition to infiltrate the liquid resin composition into the carbon nanotube network layer; irradiating it with electron beams to cure the liquid resin composition; and peeling away the release substrate to obtain an objective substrate having a resin composition layer with carbon nanotubes embedded in the surface thereof.
A process for efficiently producing a composite material comprising a base and carbon nanotubes (CNTs) deposited on the surface thereof, on the basis of a CVD method. The process comprises: feeding a CNT-supporting base (P) and a carbon-source vapor (V) to the heatable chamber of a cylinder (10), the cylinder (10) having been disposed obliquely so that the cylinder can be rotated on the major axis and one end (10a) of the major axis is located above; and yielding CNTs on the surface of the base. The positions of a CNT-supporting-base introduction part (30) and a carbon-source-vapor supply part (40) are determined so that the CNT-supporting base comes into contact with the carbon-source vapor in a reaction zone (12) disposed in at least some of an upstream-side region within the chamber. Protrusions (20) have been disposed on the inner circumferential wall of the chamber. Due to this, by rotating the cylinder, the CNT-supporting base is moved from the upstream side to the downstream side of the cylinder while repeatedly being caught in and lifted up with the protrusions and falling.
It is intended to provide a carbon nanotube dispersion wherein carbon nanotubes are uniformly dispersed and can exert the characteristics inherent to the carbon nanotubes while sustaining a favorable dispersion state over a long period of time. This carbon nanotube dispersion contains an alcoholic solvent (preferably a lower alcohol having from about 1 to about 4 carbon atoms) and a polyvinyl acetal resin.
C08L 29/14 - Homopolymers or copolymers of acetals or ketals obtained by polymerisation of unsaturated acetals or ketals or by after-treatment of polymers of unsaturated alcohols
Disclosed is a method for producing a cell culture vessel (10) having a carbon nanotube (CNT) layer (14) on its surface. The method comprises the steps of: providing a vessel (12) having a predetermined shape; providing a CNT dispersion solution comprising a dispersion medium and a CNT material mainly composed of a CNT and dispersed in the dispersion medium at a concentration of 50 mg/L or less; and forming the CNT layer (14) on the surface of the vessel (12). The formation of the CNT layer (14) is achieved by alternately repeating a supply step of applying the CNT dispersion solution on the vessel (12) and a drying step of drying the applied dispersion solution once or more times.
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