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

Carbon nanofiber composite material loaded with nickel hydroxide nanosheets and nickel cobaltate nanocrystals, and preparation method thereof and application of carbon nanofiber composite material loaded with nickel hydroxide nanosheets and nickel cobaltate nanocrystals

A carbon nanofiber, nickel hydroxide technology, used in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., can solve the problems of structural instability, poor conductivity, etc. Discharge rate, tight bonding effect

Active Publication Date: 2019-10-15
WUHAN UNIV OF TECH
View PDF3 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, poor electrical conductivity and their structural instability greatly hinder the development of NiCo composites in the field of supercapacitors

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
  • Carbon nanofiber composite material loaded with nickel hydroxide nanosheets and nickel cobaltate nanocrystals, and preparation method thereof and application of carbon nanofiber composite material loaded with nickel hydroxide nanosheets and nickel cobaltate nanocrystals
  • Carbon nanofiber composite material loaded with nickel hydroxide nanosheets and nickel cobaltate nanocrystals, and preparation method thereof and application of carbon nanofiber composite material loaded with nickel hydroxide nanosheets and nickel cobaltate nanocrystals
  • Carbon nanofiber composite material loaded with nickel hydroxide nanosheets and nickel cobaltate nanocrystals, and preparation method thereof and application of carbon nanofiber composite material loaded with nickel hydroxide nanosheets and nickel cobaltate nanocrystals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Preparation of carbon nanofiber composites (NCH CNF) loaded with nickel hydroxide nanosheets and nickel cobaltate nanocrystals:

[0043] (1) Dissolve 0.3g of polyacrylonitrile (PAN) in 10mL of N,N-dimethylformamide organic solution, heat at 80°C and stir for 30 minutes until completely dissolved, then add 0.3g of polyvinylpyrrolidone (PVP) respectively , 0.5g cobalt acetate, 0.25g nickel acetate, and continuously stirred for 24 hours to form a uniform transparent organic liquid to prepare a precursor solution. Keep the air humidity at 15%, electrospin at 15kV and 30°C, keep 2mL h -1 Spinning at a dripping rate of 4 hours, standing and drying at 80°C overnight to obtain a carbon nanofiber precursor;

[0044] (2) Put the prepared electrospun nanofibers into a quartz tube, and heat them at 1°C min under a nitrogen atmosphere. -1 Calcined at a heating rate of 500°C, kept for 300 minutes when the temperature reached 500°C, and then cooled naturally to obtain a carbon nanof...

Embodiment 2

[0049] Preparation of NCH-CNF:

[0050] (1) Dissolve 0.25g of polyacrylonitrile (PAN) in 10mL of N,N-dimethylformamide organic solution, heat at 80°C and stir for 30 minutes until completely dissolved, then add 0.25g of polyvinylpyrrolidone (PVP) respectively , 0.25g cobalt acetate, 0.5g nickel acetate, and continuously stirred for 24 hours to form a uniform transparent organic liquid to prepare a precursor solution. Keep the air humidity at 15%, electrospin at 15kV and 30°C, keep 2mL h -1 Spinning at a dripping rate of 4 hours, standing and drying at 80°C overnight to obtain a carbon nanofiber precursor;

[0051] (2) Put the prepared electrospun nanofibers into a quartz tube, and heat them at 3°C ​​min under a nitrogen atmosphere. -1 Calcined at a heating rate of 400°C, kept for 240 minutes when the temperature reached 400°C, and then cooled naturally to obtain a carbon nanofiber composite material loaded with nickel cobaltate nanocrystals;

[0052] (3) Disperse 0.02g of c...

Embodiment 3

[0055] Preparation of NCH-CNF:

[0056] (1) Dissolve 0.2g of polyacrylonitrile (PAN) in 10mL of N,N-dimethylformamide organic solution, heat at 80°C and stir for 30 minutes until completely dissolved, then add 0.2g of polyvinylpyrrolidone (PVP) respectively , 0.5g cobalt acetate, 0.25g nickel acetate, and continuously stirred for 24 hours to form a uniform transparent organic liquid to prepare a precursor solution. Keep the air humidity at 15%, electrospin at 15kV and 30°C, keep 2mL h -1 Spinning at a dripping rate of 4 hours, standing and drying at 80°C overnight to obtain a carbon nanofiber precursor;

[0057] (2) Put the prepared electrospun nanofibers into a quartz tube, and heat them at 5°C min under a nitrogen atmosphere. -1 Calcined at a heating rate of 600°C, kept for 120 minutes when the temperature reached 600°C, and then cooled naturally to obtain a carbon nanofiber composite material loaded with nickel cobaltate nanocrystals;

[0058] (3) Disperse 0.02g of carbo...

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
The average particle sizeaaaaaaaaaa
Thicknessaaaaaaaaaa
Diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a carbon nanofiber composite material loaded with nickel hydroxide nanosheets and nickel cobaltate nanocrystals, and a preparation method thereof and application of a carbon nanofiber composite material loaded with nickel hydroxide nanosheets and nickel cobaltate nanocrystals. In the composite material, the carbon nanofiber is simultaneously and uniformly loaded with nickelcobaltate nanocrystals and nickel hydroxide nanosheets, wherein the nickel cobaltate nanocrystals are uniformly inlaid in the carbon nanofiber to jointly form a carbon nanofiber framework, and the nickel hydroxide nanosheets are vertically and alternately distributed on the surface of the carbon nanofiber framework. The preparation method comprises the following steps of: (1) obtaining a carbon nanofiber precursor containing an organic carbon source, a cobalt source and a nickel source; (2) calcining the product obtained in the step (1) in an inert gas atmosphere; and (3) growing nickel hydroxide on the surface of the calcined product to obtain a final product. The composite material has the advantages of the large specific surface area, the stable structure and the excellent electrochemical performance, wherein the specific volume can reach 1926Fg-1 under the current density of 2Ag-1, and the composite material can be used as an anode material of a super capacitor.

Description

technical field [0001] The invention belongs to the technical field of electrode material synthesis, and in particular relates to a carbon nanofiber composite material loaded with nickel hydroxide nanosheets and nickel cobaltate nanocrystals, and a preparation method and application thereof. Background technique [0002] Supercapacitors are currently the most popular energy storage devices, which include two different types of energy storage mechanisms: electric double-layer capacitors and pseudocapacitive capacitors, which are outstanding for their high power density, long life, high power output, high power output, etc. Merit became one of the most promising candidates. With the rapid development of electronic devices and hybrid electric vehicles, the assembly of supercapacitors with high energy density, fast charge and discharge performance, and higher growth and upside potential is the solution to the rapid growth of environmentally friendly renewable energy devices in t...

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): H01G11/24H01G11/30H01G11/36H01G11/86
CPCH01G11/24H01G11/30H01G11/36H01G11/86Y02E60/13
Inventor 余家国张留洋徐李倩昀
Owner WUHAN UNIV OF TECH
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