Preparation method of pine needle-shaped carbon nanotube/carbon fiber composite carbon material

A carbon nanotube and carbon fiber technology, applied in the field of preparation of pine needle-shaped carbon nanotube/carbon fiber composite carbon materials, can solve the problems of high cost, poor flexibility of three-dimensional porous network structure, small specific surface area and the like

Inactive Publication Date: 2020-06-02
启东茂材实业有限公司
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The integration of conductive materials and current collectors has the advantage of a stable conductive network structure, but there ar

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1

[0021] A method for preparing pine needle-shaped carbon nanotube / carbon fiber composite carbon material includes the following steps: ultrasonic cleaning of Toray TGP-H-060 carbon paper in isopropanol for 30 minutes, drying at 70°C for 30 minutes, and then drying in the tube Heat treatment at 590℃ for 7.5h in an inert atmosphere in the furnace, and then put it into concentrated HNO 3 Soak the surface of carbon fiber in medium for 4.5h, finally rinse with distilled water to neutrality, and dry at 70℃ for 7.5h; dissolve 15 parts of iron nitrate and 1.5 parts of sucrose in a mixed solvent of 55 parts of acidic silica sol and 10 parts of ethanol , Magnetic stirring at room temperature for 14 hours to obtain the metal iron catalyst precursor solution; the activated carbon paper was immersed in the above solution for 2 hours, taken out and placed in a Buchner funnel for suction filtration for 4 seconds, dried at 70 ℃ for 4.5 hours, the process was repeated 3 times to...

Example Embodiment

[0022] Example 2

[0023] A method for preparing pine needle-shaped carbon nanotube / carbon fiber composite carbon material includes the following steps: ultrasonic cleaning of Toray TGP-H-060 carbon paper in isopropanol for 25 minutes, drying at 65°C for 25 minutes, and then drying in the tube Heat treatment at 585℃ for 7h in an inert atmosphere in the furnace, and then put it into concentrated HNO 3 Soak in medium for 4h to etch the surface of carbon fiber, finally rinse with distilled water to neutrality, and dry at 65℃ for 7h; dissolve 10 parts of ferric nitrate and 1 part of sucrose in a mixed solvent of 50 parts of acidic silica sol and 5 parts of ethanol at room temperature Magnetically stirred for 13 hours to obtain the metal iron catalyst precursor solution; the activated carbon paper was immersed in the above solution for 1.5 hours, taken out and placed in a Buchner funnel for suction filtration for 4 seconds, dried at 65°C for 4 hours, and this process was repeated 3 tim...

Example Embodiment

[0024] Example 3

[0025] A method for preparing pine needle-shaped carbon nanotube / carbon fiber composite carbon material includes the following steps: ultrasonic cleaning of Toray TGP-H-060 carbon paper in isopropanol for 35 minutes, drying at 75°C for 35 minutes, and then drying in the tube Heat treatment at 595℃ for 8h in an inert atmosphere in the furnace, and then put it into concentrated HNO 3 Soak the surface of carbon fiber for 5h in medium, rinse with distilled water to neutrality, and dry at 75℃ for 8h; dissolve 20 parts of ferric nitrate and 2 parts of sucrose in a mixed solvent of 60 parts of acidic silica sol and 15 parts of ethanol at room temperature Magnetically stirred for 15 hours to obtain the metal iron catalyst precursor solution; the activated carbon paper was immersed in the above solution for 2.5 hours, taken out and placed in a Buchner funnel for suction filtration for 4 seconds, dried at 75°C for 5 hours, and this process was repeated 3 times , To form ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a preparation method of a pine needle-shaped carbon nanotube/carbon fiber composite carbon material. The preparation method comprises the following steps: carrying out ultrasonic cleaning on carbon paper in isopropanol, drying, carrying out heat treatment, soaking in concentrated HNO3, rinsing, and drying; dissolving ferric nitrate and sucrose in a mixed solvent of acidic silica sol and ethanol, and stirring to obtain a metal iron catalyst precursor solution; and soaking the carbon paper into the solution, carrying out suction filtration, drying, placing on a porcelainboat, introducing Ar, heating to 280-290 DEG C, switching to H2, reducing, adjusting the flow of Ar and H2, heating to 745-755 DEG C, injecting a xylene ferrocene mixed solution into a reaction tube,reacting for 2-3 hours, closing H2, cooling the tubular furnace to 420-440 DEG C in an Ar atmosphere, calcining for 2.5-3.5 hours, and cooling to obtain the catalyst. According to the invention, multi-walled carbon nanotubes with high graphitization degree, high distribution density, large specific surface area and uniform tube diameter can be deposited on the pretreated carbon paper carbon fibers.

Description

technical field [0001] The invention relates to a preparation method of a pine needle-shaped carbon nanotube / carbon fiber composite carbon material. Background technique [0002] Elemental sulfur is abundant in the earth and has the advantages of low price, environmental friendliness, and non-toxicity. It has a good application prospect as the cathode material of lithium secondary batteries. The lithium-sulfur battery assembled with elemental sulfur as the positive electrode and metal lithium as the negative electrode has a theoretical specific capacity of 1675mAh / g and a mass specific energy of 2600Wh / kg, which is five times that of the current lithium-ion battery (500Wh / kg). According to the latest report, when the positive electrode sulfur load is 90%, the initial specific capacity of the battery reaches 1115mAh / g, and it can still reach 670mAh / g after 1000 cycles, and the average capacity decay rate per cycle is only 0.039%. With the successive breakthroughs in major te...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C01B32/00C01B32/162
CPCC01B32/00C01B32/162C01B2202/06
Inventor 不公告发明人
Owner 启东茂材实业有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap