Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Doped carbon fiber net and preparation method thereof

A technology of carbon fiber mesh and carbon fiber, which is applied in the field of doped carbon fiber mesh and its preparation, can solve the problems of not being able to improve the conductivity of electrodes, uneven distribution of electrode active substances, and excessive electrode current, so as to achieve good conductivity, Guaranteed strength and reduced dosage

Inactive Publication Date: 2015-02-18
CENT SOUTH UNIV
View PDF5 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since carbon nanotubes and carbon fibers are not easy to disperse, if carbon nanotubes or carbon fibers are directly added to the electrode material, it is easy to cause uneven distribution of electrode active materials, which cannot improve the conductivity of the electrode well, and even cause excessive local current of the electrode and affect the electrode material. Battery Life

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Doped carbon fiber net and preparation method thereof
  • Doped carbon fiber net and preparation method thereof
  • Doped carbon fiber net and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A doped carbon fiber network, the doped carbon fiber network is a network structure formed by the mutual fusion of carbon fibers, the carbon fiber contains a doping element whose outermost electron number is not 4, wherein the carbon fiber has a diameter between 10 and 500nm The solid fiber or hollow fiber, that is, the carbon fiber is in the shape of solid filament or hollow tube, and the doping element is any two or more of aluminum, boron, nitrogen and phosphorus. The carbon fibers in the doped carbon fiber network are fused at the nodes to form a whole , and its overall fusion connectivity is good. The above-mentioned doping element may also be one of aluminum, boron, nitrogen and phosphorus. figure 1 It shows the carbon fiber in the doped carbon fiber network of the present invention, Figure 4 to Figure 6 Three different doped carbon fiber meshes are shown separately.

[0029] In this embodiment, the doped carbon fiber network is specifically a network structure...

Embodiment 2

[0032] A preparation method of doped carbon fiber net, comprising the following steps,

[0033] (1) To prepare a polyacrylonitrile nanofiber membrane, 5 g of polyacrylonitrile powder with a molecular weight of 150,000 was dissolved in 50 g of N,N-dimethylformamide, and stirred at a constant temperature of 85° C. for 8 h to disperse evenly. Inhale the mixed solution into a 20mL syringe equipped with a stainless needle, and use a high-voltage electrospinning machine under the conditions of an injection voltage of 15-20 kV and a receiving distance of 15cm (2) Place the polyacrylonitrile nanofiber membrane in a tube furnace In the process, the temperature was raised to 1100°C at a heating rate of 2°C / min, and carbonized for 4 hours under an inert gas protective atmosphere to obtain a carbon fiber film; after the reaction was completed, it was naturally cooled to room temperature, and the carbon fiber film was taken out;

[0034] (3) Stir the carbon fiber membrane, boron trioxide a...

Embodiment 3

[0038] A preparation method of doped carbon fiber net, comprising the following steps,

[0039](1) To prepare a polyacrylonitrile nanofiber membrane, 5 g of polyacrylonitrile powder with a molecular weight of 150,000 was dissolved in 50 g of N,N-dimethylformamide, and stirred at a constant temperature of 85° C. for 8 h to disperse evenly. Inhale the mixed solution into a 20mL syringe equipped with a stainless needle, and use a high-voltage electrospinning machine to spin into a film under the conditions of an injection voltage of 15-20 kV and a receiving distance of 15 cm to obtain a polyacrylonitrile nanofiber film;

[0040] (2) Put the polyacrylonitrile nanofiber membrane in a tube furnace, raise the temperature to 600~1000℃ at a heating rate of 2℃ / min, and carbonize it under an inert gas protective atmosphere for 4 hours to obtain a carbon fiber membrane; after the reaction is completed, it will naturally Cool to normal temperature, take out the carbon fiber membrane;

[0...

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

PropertyMeasurementUnit
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a doped carbon fiber net and a preparation method of the doped carbon fiber net. The doped carbon fiber net is in a net-shaped structure formed by integrating carbon fibers, the carbon fiber has a doped element, the number of outermost electrons of the doped element is not 4, the doped carbon fiber net has the advantages of even distribution of gaps, and excellent overall integration property, electrical conductivity, plasticity and toughness, and the amount of the used carbon fibers is reduced greatly while the strength is guaranteed. The preparation method comprises the steps of preparing a polyacrylonitrile nanofiber or a polyacrylonitrile nanofiber membrane, carbonizing to obtain the carbon fiber or a carbon fiber membrane, doping at the high temperature, washing with acid to remove impurities or washing with alkaline to remove impurities, and the like. The preparation method has the advantages of simple preparation process, low cost, high easiness in operation and implementation, and the like, and precious metals and catalysts are not related.

Description

technical field [0001] The invention relates to the technical field of new materials and their preparation, in particular to a doped carbon fiber net and a preparation method thereof. Background technique [0002] Carbon materials have the advantages of light weight, wear resistance, high temperature resistance, chemical stability and good electrical conductivity, so they are widely used in aerospace, navigation, construction, catalysis, chemical industry, energy storage and other fields. In terms of structural material reinforcement, due to the light weight, strong corrosion resistance and high tensile strength of carbon fiber, it is usually achieved by weaving carbon fiber bundles into a mesh to reduce the amount of carbon materials on the basis of ensuring that the strength meets the requirements. . In applications such as electrochemical energy storage that require high material conductivity, granular carbon materials such as graphite and acetylene black are usually add...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/00
Inventor 刘素琴史浪袁浩赵匡明
Owner CENT SOUTH UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com