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Low-walled carbon nanotube fiber bundle and preparation process thereof

A technology of carbon nanotube fiber and double-walled carbon nanotube, which is applied in the field of oligowalled carbon nanotube fiber bundle and its preparation technology, can solve problems such as the purity of carbon nanotube fiber, and achieve sufficient and stable energy and material exchange High and uniform reaction temperature

Pending Publication Date: 2022-05-13
JIANGSU CNANO TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of carbon nanotube fiber purity and industrial production, the application provides an oligowalled carbon nanotube fiber bundle and its preparation process

Method used

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  • Low-walled carbon nanotube fiber bundle and preparation process thereof
  • Low-walled carbon nanotube fiber bundle and preparation process thereof
  • Low-walled carbon nanotube fiber bundle and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Refer to attached figure 1 , a horizontal microwave plasma cloud device, including a mixed feed member 3, an ignition device 4, a quartz inner liner 5, a receiving device 6 and an exhaust gas discharge device 7, wherein the mixed feed member 3, the ignition device 4, the quartz inner The liner 5 and the receiving device 6 are arranged sequentially according to the preparation process of feeding, ignition and heating, reaction and receiving, and the mixed feeding member 3 is connected with a micro injection pump and a carrier gas inlet device 2, and the mixed slurry passes through the micro The syringe pump is injected into the mixed feed member 3, and the mixed carrier gas enters into the mixed feed member 3 through the carrier gas inlet device 2; and the quartz liner 5 is connected with a microwave power supply 8 and a magnetron 9, and the magnetron The tube 9 controls the stable output and operation of the microwave power, and the outer wall of the quartz-lined tube 5...

Embodiment 2

[0057] Refer to attached figure 2 , a vertical microwave plasma cloud equipment, according to the preparation process of carrier gas feed, temperature rise, reaction, and material collection, including carrier gas inlet device 2, quartz inner liner 5, material receiving device 6 and tail gas discharge device arranged in sequence 7, wherein the quartz liner 5 includes a plasma cloud reaction zone 51 and a mixing reaction zone 52, the output end of the plasma cloud reaction zone 51 is connected to the input end of the mixing reaction zone 52, the plasma cloud reaction zone 51 is connected with a microwave power supply 8, and the mixing The reaction zone 52 is connected with a micro-injection pump, and the outer wall of the quartz liner 5 corresponding to the plasma cloud reaction zone 51 is provided with a stainless steel water-cooled clip 10; after the mixed carrier gas enters the plasma cloud reaction zone 51, it is heated up under the action of the plasma cloud, and then The...

Embodiment 3

[0059] Preparation of organic slurry: adding ferrocene to ethanol, stirring evenly, wherein the mass content of ferrocene is 5%;

[0060] Preparation of mixed slurry: adding methyl mercaptan as a co-catalyst into the organic slurry and mixing evenly to prepare mixed slurry.

[0061] This embodiment adopts the vertical microwave plasma cloud equipment of Embodiment 2, the microwave power of the control equipment is 3KW, and Ar / H is fed through the carrier gas inlet device 2 2 Mix the carrier gas, and control the flow rate of Ar in the mixed carrier gas to be 50L / min, H 2 The flow rate is 20L / min, Ar / H 2 The mixed carrier gas is excited by microwaves in the plasma cloud reaction zone 51 of the quartz liner 5 to generate a high-temperature ion cloud flame, and the temperature of the mixed reaction zone 52 is rapidly raised to 1080°C; then the mixed slurry prepared above is injected into the In the mixed reaction zone 52 of the quartz liner 5, the injection speed of the micro-in...

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Abstract

The invention relates to the field of carbon nanofibers, and particularly discloses a few-walled carbon nanotube fiber bundle and a preparation process thereof.The preparation process comprises the steps that a carbon source, an organic iron catalyst and a cocatalyst are mixed to prepare mixed slurry, H2 or Ar / H2 mixed carrier gas is used and introduced into microwave plasma cloud reaction equipment, high-temperature ion cloud flames are generated under microwave excitation, and the low-walled carbon nanotube fiber bundle is obtained; the mixed slurry is quantitatively added into a plasma cloud filled with carrier gas, few-walled carbon nanotube fibers are continuously generated through an in-situ reaction, and generated few-walled carbon nanotube fiber bundles comprise single-walled carbon nanotube fibers, double-walled carbon nanotube fibers and three-layer-wall carbon nanotube fibers; the sum of the proportions of the double-walled carbon nanotube fibers and the three-layer-walled carbon nanotube fibers is less than 65%, and the balance is the single-walled carbon nanotube fibers; the TGA purity of the carbon nanotube fiber bundle product is greater than or equal to 85%, the amorphous carbon content is less than or equal to 5%, the TGA purity is high, the crystallinity is high, the flexibility is good, the preparation process is simple to operate, the reaction temperature is uniform, the repeatability is good, and the stability is high.

Description

technical field [0001] The application relates to the field of carbon nanomaterials, more specifically, it relates to an oligowalled carbon nanotube fiber bundle and a preparation process thereof. Background technique [0002] Oligo-walled (referring to single-walled, double-walled and triple-walled) carbon nanotube fibers are a type of carbon nanotubes. This type of carbon nanotubes has excellent electrical conductivity, and at the same time has a higher aspect ratio and better flexibility. Adding carbon nanotubes to the electrode materials of lithium-ion batteries can effectively form a conductive network, improve the conductivity of the electrodes, and make lithium-ion batteries have excellent performance, specifically manifested in large battery capacity and long cycle life, suitable for high-end digital batteries And new energy vehicle power battery. Moreover, such carbon nanotubes have good crystallinity and good flexibility, and have potential application value in s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/159C01B32/158C01B32/16C01B32/162
CPCC01B32/159C01B32/158C01B32/16C01B32/162C01B2202/02C01B2202/04C01B2202/30C01B2202/36C01B2202/34C01B2202/32
Inventor 谢宝东徐壮刘等等韩少秋张美杰郑涛
Owner JIANGSU CNANO TECHNOLOGY CO LTD
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