Self-supporting CNT (Carbon Nano-Tube) film-faradaic pseudocapacitance composite material

A technology of carbon nanotube film and carbon nanotube film, applied in the field of self-supporting carbon nanotube film-pseudocapacitive composite material and its preparation, can solve the problems of cumbersome process, capacity loss, conductance drop, etc., and achieve controllable operation , excellent ductility and flexibility, and good uniformity

Inactive Publication Date: 2013-11-20
TIANJIN UNIV
View PDF2 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of capacity loss and conductance drop caused by the addition of binders in the existing electrode preparation process and the shortcomings of cumbersome processes in the traditional electrode preparation and coating technology, and to provide a self-supporting carbon based Preparation method of nanotube film-pseudocapacitive material composite electrode

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
  • Self-supporting CNT (Carbon Nano-Tube) film-faradaic pseudocapacitance composite material
  • Self-supporting CNT (Carbon Nano-Tube) film-faradaic pseudocapacitance composite material
  • Self-supporting CNT (Carbon Nano-Tube) film-faradaic pseudocapacitance composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Example 1 (method 1)

[0043] (1) Pretreatment of carbon nanotube film

[0044] A macroscopic film of carbon nanotubes prepared by chemical vapor deposition, mixed acid (concentrated H 2 SO 4 with concentrated HNO 3 , with a volume ratio of 3:1), impregnated the carbon tube membrane for 12 hours for pretreatment, and introduced hydrophilic groups (carboxylic acid and hydroxyl) to improve the hydrophilicity of the carbon tube membrane. Then rinse off any residual acid with copious amounts of deionized water.

[0045] (2) Preparation of precursor solution

[0046] Prepare 0.15mol / L manganese sulfate solution and 0.1mol / L potassium permanganate solution as precursor solution respectively.

[0047] (3) Liquid phase synthesis reaction

[0048] Use two glass slides to clamp the carbon nanotube film between them, add 5 drops of 0.15mol / L manganese sulfate and 0.1mol / L potassium permanganate solution to the left and right sides of the carbon nanotube respectively, rely on...

Embodiment 2

[0050] Example 2 (method 1)

[0051] (1) Pretreatment of carbon nanotube film

[0052] Macroscopic film of carbon nanotubes prepared by chemical vapor deposition method, 16mol / L concentrated HNO 3 Immerse the carbon tube membrane for 12 hours for pretreatment, and introduce hydrophilic groups (carboxylic acid and hydroxyl) to improve the hydrophilicity of the carbon tube membrane. Then rinse off any residual acid with copious amounts of deionized water.

[0053] (2) Preparation of precursor solution

[0054] Prepare 0.1mol / L potassium permanganate solution as the precursor solution.

[0055] (3) Liquid phase synthesis reaction

[0056] Use two glass slides to clamp the carbon nanotube film between them, take 5 drops of 0.1mol / L potassium permanganate solution and add it to the edge of the glass slide, and rely on the capillary force of the carbon nanotubes to diffuse the solution on both sides to the carbon nanotubes. In the tube network structure, the sandwich structure ...

Embodiment 3

[0058] Embodiment 3 (method 1)

[0059] (1) Pretreatment of carbon nanotube film

[0060] A macroscopic film of carbon nanotubes prepared by chemical vapor deposition, mixed acid (concentrated H 2 SO 4 with concentrated HNO 3 , the volume ratio is 3:1, and then diluted twice) to impregnate the carbon tube membrane for 12 hours for pretreatment, and introduce hydrophilic groups (carboxylic acid and hydroxyl) to improve the hydrophilicity of the carbon tube membrane. Then rinse off any residual acid with copious amounts of deionized water.

[0061] (2) Preparation of precursor solution

[0062] Take 20ml 1mol / L nickel sulfate, 15ml 0.25mol / L potassium persulfate, 5ml ammonia (25%-28%) and 10ml H 2 O was quickly stirred and mixed to prepare a precursor mixed solution.

[0063] (3) Liquid phase synthesis reaction

[0064] Use two glass slides to sandwich the carbon nanotube film between them, take 5 drops of the mixed solution and add it to the edge of the glass slide, and ...

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 self-supporting CNT (Carbon Nano-Tube) film-faradaic pseudocapacitance composite material and a preparation method thereof. A CNT film participates in reaction by being used as a self-supporting continuous base body, the wall of a single CNT or the surface of a CNT bundle in a network structure of the CNT film is compounded with material with good faradaic pseudocapacitance performance, and the faradaic pseudocapacitance material comprises MnO2, Ni(OH)2 and PANI. According to the preparation method disclosed by the invention, the process is simple, and the defects of tedious technology and the like of a traditional electrode coating preparation method are overcome; and a prepared composite thin film has the advantages of large mechanical strength and good electrical conductivity, has excellent ductility and flexibility, is flexible electrode material and has a great application prospect in fields of a super capacitor and the like.

Description

technical field [0001] The invention relates to nanometer materials, in particular to a self-supporting carbon nanotube film-pseudocapacitance composite material and a preparation method thereof. Background technique [0002] Due to their unique physical and chemical properties, such as high electrical conductivity, chemical and mechanical stability, carbon nanotubes have become a research hotspot in recent supercapacitor composite electrode materials. Carbon tubes are usually introduced with pseudocapacitive properties (transition metal oxides and conducting polymers (MnO 2 , Ni(OH) 2 , PANI, etc.) materials to improve the cycle stability and conductivity of the composite, and realize the combination of high energy, high power density and excellent cycle performance of the composite, which is also the research focus of supercapacitor electrode materials in recent years. The traditional electrode preparation process usually adopts the coating method, that is, the electrode...

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): H01G11/36H01G11/86
CPCY02E60/13
Inventor 侯峰周叶万志鹏董留兵
Owner TIANJIN 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