30results about "Filled nanotubes" patented technology

Methods of oxidizing multiwalled carbon nanotubes are provided. The multiwalled carbon nanotubes are oxidized by contacting the carbon nanotubes with gas-phase oxidizing agents such as CO2, O2, steam, N2O, NO, NO2, O3, and ClO2. Near critical and supercritical water can also be used as oxidizing agents. The multiwalled carbon nanotubes oxidized according to methods of the invention can be used to prepare rigid porous structures which can be utilized to form electrodes for fabrication of improved electrochemical capacitors.

Nano-composite structures are formed by pre-loading carbon nanotubes (CNTs) into at least one of a plurality of channels running the length of a cartridge, placing the pre-loaded cartridge in a piston chamber of a die-casting machine, creating a vacuum therein, and filing the piston chamber with molten metal to soak the pre-loaded cartridge and fill empty cartridge channels. Pressure is applied via the piston to eject the carbon nanotubes and molten metal from the cartridge channels and inject the nano-composite mixture into a rod-shaped die cavity. The internal diameter of the cavity is equal to or less than the final diameter of the nozzle. The nano-composite mixture is cooled to form a solid nano-composite rod having the first predetermined diameter, wherein the carbon nanotubes are aligned in a non-random manner. Furthermore, drawing down the nano-composite rod to smaller diameter wire further disperses the nanotubes along the length of the wire.

A vertical chemical vapor deposition (CVD) reactor and a method for synthesizing metal oxide impregnated carbon nanotubes. The CVD reactor includes a preheating zone portion and a reaction zone portion, and preferably an additional cooling zone portion and a product collector. The method includes (a) subjecting a liquid reactant solution comprising an organic solvent, a metallocene, and a metal alkoxide to atomization in the presence of a gas flow comprising a carrier gas and a support gas to form an atomized mixture, and (b) heating the atomized mixture to a temperature of 200° C.-1400° C., wherein the heating forms a metal oxide and at least one carbon source compound, wherein the metallocene catalyzes the formation of carbon nanotubes from the at least one carbon source compound and the metal oxide is incorporated into or on a surface of the carbon nanotubes to form the metal oxide impregnated carbon nanotubes.

The present invention relates to a method for producing a carbon nanotube fiber, and a carbon nanotube fiber produced thereby, the method comprising: a step (S1) for producing a carbon nanotube assembly from a carbon source in the presence of a catalyst and a catalyst activator; a step (S2) for bringing the carbon nanotube assembly into contact with a graphene oxide; and a step (S3) for fiberizingthe carbon nanotube assembly in contact with the graphene oxide.

The invention discloses a carbon-based material based ion collection method. The method includes the following steps: (1) performing pretreatment on a carbon-based material; and (2) soaking the pretreated carbon-based material obtained by the step (1) in a salt solution. The step (1) includes the following steps: a, performing ultrasonic processing on the carbon-based material in a solution; and b, washing the carbon-based material processed by ultrasonic with deionized water, and performing drying for later use. The method has high universality, and can be used in water solution of salt likesodium salt, potassium salt and chlorine salt or organic solutions. The method is simple in preparation process, easy in operation and low in energy consumption; the problem that salt ions are hard toremove during water purification can be solved; a new approach to enrich ions can be opened up; and the method has important meanings in the field of water treatment and good application and market promotion prospects.

The present invention relates to a carbon nanotube fiber and methods for preparing the same. In one embodiment, a method for preparing a carbon nanotube fiber comprises reacting a carbon source in the presence of a catalyst and a catalytic activator to form carbon nanotube aggregates, contacting the carbon nanotube aggregates with graphene oxide, and forming the carbon nanotube aggregates in contact with the graphene oxide into a carbon nanotube fiber.

The invention discloses a copper-filled carbon nanotube array-based composite material and a preparation method thereof. The preparation method includes: providing a carbon nanotube array; placing the copper-containing precursor and the carbon nanotube array in the first temperature zone and the second temperature zone of the chemical vapor deposition equipment; vaporizing the precursor, and reducing The carrier gas carries the precursor into the carbon nanotube array; the reducing carrier gas reacts with the precursor in the carbon nanotube array to form a plurality of nano-copper particles, and the plurality Nano copper particles nucleate and grow in the internal pores of the carbon nanotube array to form a plurality of micron copper particles; high temperature annealing is performed on the carbon nanotube array filled with micron copper particles to make the plurality of micron copper particles The copper particles are fused with each other to obtain the copper-filled carbon nanotube array-based composite material. The copper-filled carbon nanotube array-based composite material prepared by the invention has excellent thermal conductivity.

The present invention relates to Composite comprising CNT fibres and an ionic conducting compound forming a homogeneous continuous phase or a two-phase bicontinuous structure and its process of obtainment by impregnation methods. Furthermore the invention relates to its use as part of an energy storage device such as an structural flexible electrochemical capacitor.

The invention relates to carbon nanofiber filled with metal oxide nanoparticles and a preparation method thereof. The carbon nanofiber filled with the metal oxide nanoparticles is prepared through the following steps: filling carbon nanofiber tubes with a metal salt solution under the action of milling, and carrying out drying and calcination, wherein the particle sizes of the metal oxide nanoparticles are in a range of 5 to 30 nm. The method provided by the invention has the characteristics of short filling time, capability of realizing high filling volume, simple process, greenness, environmental protection, low cost, easiness in industrialization, etc.; and the obtained carbon nanofiber has excellent mechanical and chemical stability, and has good application prospects in the fields of catalysis, sensors, electromagnetic shielding, new energy, biotechnology, high-performance composite materials, etc.

The present invention provides a method for manufacturing a dopant composition-nanomaterial composite, which method makes it possible to simply and efficiently change a Seebeck coefficient value of a nanomaterial. This manufacture method of the present invention includes the step of putting a dopant composition in contact with a nanomaterial in a solvent, the dopant composition containing an anion, a cation, and a scavenger.