Preparation method and application of cobalt disulfide and carbon nano fiber composite material

A carbon nanofiber, composite material technology, applied in the directions of carbon fiber, fiber treatment, fiber chemical characteristics, etc., can solve the problems of long charge-discharge cycle, low capacity density, low power density, etc., and achieves fewer synthesis steps, simple operation methods, The effect of increasing the surface area

Active Publication Date: 2017-09-26
TONGJI UNIV
View PDF2 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solar energy and wind energy are efficient, green, environmentally friendly and renewable, but they are not stable. For example, solar energy cannot be generated at night, and wind energy is also uncertain. Solar energy and electric energy cannot be stored like fossil energy, so it is necessary to design a storage Energy systems store and utilize energy

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
  • Preparation method and application of cobalt disulfide and carbon nano fiber composite material
  • Preparation method and application of cobalt disulfide and carbon nano fiber composite material
  • Preparation method and application of cobalt disulfide and carbon nano fiber composite material

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0033] Example 1 (best example)

[0034] A preparation method of a cobalt disulfide and carbon nanofiber composite material that can be used as an electrode material for a supercapacitor, the specific steps are as follows:

[0035] (1) The spinning solution is polyacrylonitrile (PAN, Mw=150,000) solution with a concentration of 10%, using N-N dimethylformamide (DMF) as solvent, stirring for 12h, sucking the mixed PAN solution into a syringe, electrospinning The wire conditions are: voltage 12.5kv, flow rate 0.5mL / h, inner diameter of needle tube 0.8mm, and the distance from needle to aluminum foil, that is, the receiving distance is 10cm. Spinning time 10 hours. The white film obtained after spinning was cut into 2*15cm strips and placed in a tube furnace for pre-carbonization. The conditions were as follows: in an air atmosphere, the temperature was raised to 270°C at 1°C / min at room temperature, maintained for 2h, and cooled to room temperature. Next, the carbonization pr...

Example Embodiment

[0043] Example 2 (comparative example)

[0044] A preparation method of a cobalt disulfide and carbon nanofiber composite material that can be used as an electrode material for a supercapacitor, the specific steps are as follows:

[0045] (1): This step is exactly the same as in Example 1.

[0046] (2) Hydrothermal process: Weigh 20 mg of carbonized carbon fiber, activate it with concentrated nitric acid for 12 h, add 0.1 g of cobalt nitrate hexahydrate and 0.05 g of thioacetamide to 20 mL of deionized water, and ultrasonically dissolve it. After the carbon fiber was washed with water, it was added to 20 mL of solution, the solution was transferred to a 35 mL reaction kettle, and placed in an oven. 140℃ reaction 1h, 3h, 5h . After the reaction, after the reaction kettle was cooled, the carbon fibers were taken out, washed several times with distilled water and ethanol respectively, and vacuum-dried at 60° C. to obtain a composite material.

[0047] The SEM photos of the co...

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 relates to a preparation method and application of a cobalt disulfide and carbon nano fiber composite material. The preparation method comprises the following steps: firstly, preparing carbon nano fiber by using an electrostatic spinning method; by taking N-N dimethyl formamide (DMF) as a solvent, preparing a polyacrylonitrile spinning solution, uniformly stirring, sucking into an injector, and performing electrostatic spinning; cutting a white film obtained after spinning into long strips, and performing thermal treatment in a tubular furnace so as to obtain a black carbon fiber film; activating with concentrated nitric acid, adding cobalt nitrate hexahydrate and thioacetamide so as to obtain a solution, performing ultrasonic treatment, further transferring the solution into a reaction kettle, and performing hydrothermal reaction; after the reaction kettle is cooled after reaction, taking out the carbon fiber, respectively washing the carbon fiber with distilled water and ethanol for multiple times, and performing vacuum drying, thereby obtaining the cobalt disulfide and carbon nano fiber composite material. The cobalt disulfide and carbon nano fiber composite material is used as an electrode material of a supercapacitor, and properties of the supercapacitor can be tested.

Description

technical field [0001] The invention belongs to the technical field of inorganic nanometer materials, and in particular relates to a preparation method and application of a cobalt disulfide and carbon nanofiber composite material. Background technique [0002] In recent years, the average global temperature has risen and fossil fuels have been increasingly depleted. Solving the problem of energy shortage has attracted widespread attention. Scholars have begun to look for alternative new energy sources. Solar energy and wind energy are efficient, green, environmentally friendly and renewable, but they are not stable. For example, solar energy cannot be generated at night, and wind energy is also uncertain. Solar energy and electric energy cannot be stored like fossil energy, so it is necessary to design a storage The energy system uses the stored energy. At present, the more common energy storage systems are batteries and electrostatic capacitors. Batteries have high energy...

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): D01F9/22D06M11/53H01G11/30H01G11/36D06M101/40
CPCD01F9/225D06M11/53D06M2101/40H01G11/30H01G11/36Y02E60/13
Inventor 吴庆生程玉培
Owner TONGJI UNIV
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