Prepn of carbon naotube-polyaniline composite material for super capacitor

A technology of supercapacitors and composite materials, applied in capacitors, electrolytic capacitors, circuits, etc., can solve problems such as low specific capacitance of carbon nanotubes, and achieve the effect of solving low specific capacitance and increasing specific capacitance

Inactive Publication Date: 2007-01-03
JIANGXI UNIVERSITY OF FINANCE AND ECONOMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention prepares a carbon nanotube-polyaniline composite material with excellent performance through the selection of the deposition material and the control of the deposition process, which greatly improves the specific volume of the carbon nanotube and effectively solves the problem of low carbon nanotube Specific volume problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] Accurately weigh 1g of CNTs into 0.5mol / L HCl solution and fully ultrasonically disperse, then dissolve 1mL of aniline into 1mol / L HCl solution and pour it into the CNTs suspension for ultrasonic dispersion. After the CNTs suspension is uniformly dispersed , Dissolve 3.42g (NH 4 ) 2 S 2 O 8 Slowly add dropwise to the reaction solution and stir for 2h at 0℃. Filter the reaction product, rinse with deionized water and vacuum dry at 60℃ for 24h to obtain CNTs-PANI composite material. At this time, the quality of PANI in the composite material The score is 50%.

[0008] The properties of the prepared carbon nanotube-polyaniline composite:

[0009] Carbon nanotube specific volume F / g: 46

[0010] Carbon nanotube-polyaniline specific volume F / g: 163

Embodiment 2

[0012] Accurately weigh 0.82g of CNTs into the 1mol / L HCl solution and fully ultrasonically disperse, then dissolve 1mL of aniline into the 1mol / L HCl solution and pour it into the CNTs suspension for ultrasonic dispersion. After the CNTs suspension is uniformly dispersed , Dissolve 3.42g (NH 4 ) 2 S 2 O 8 Slowly add dropwise to the reaction solution and stir for 2h at 0℃. Filter the reaction product, rinse with deionized water and vacuum dry at 60℃ for 24h to obtain CNTs-PANI composite material. At this time, the quality of PANI in the composite material The score is 55%.

[0013] The properties of the prepared carbon nanotube-polyaniline composite:

[0014] Carbon nanotube specific volume F / g: 46

[0015] Carbon nanotube-polyaniline specific volume F / g: 197

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Abstract

In the preparation process of carbon nanotube-polyaniline composite material for super capacitor, polyaniline is deposited onto the surface of carbon nanotube. During charging and discharging, polyaniline produces electrochemical doping-dedoping effect to generate false capacitance and to increase the specific capacitance of carbon nanotube. By means of the selection of the deposited material and the control of the deposition process, the present invention prepares carbon nanotube-polyaniline composite material with excellent performance and greatly raised specific capacitance.

Description

Technical field [0001] The invention relates to a method for preparing a carbon nanotube-polyaniline composite material for supercapacitors. Background technique [0002] Electrochemical capacitors have become a research hotspot in the international energy field due to their wide application prospects and huge potential markets. Carbon nanotubes (CNTs) are ideal electrode materials for electrochemical capacitors due to their high conductivity, high mesopore content, no "dead holes", and good electrochemical stability. However, due to the relatively low specific surface area of ​​carbon nanotubes, its specific volume is also low. The low specific volume of carbon nanotubes has become a bottleneck restricting their use as electrode materials for supercapacitors. Summary of the invention [0003] The purpose of the present invention is to provide a method for preparing a carbon nanotube-polyaniline composite material for supercapacito...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/02C08K3/04H01G9/00
CPCY02E60/13
Inventor 邓梅根方勤冯义红杨邦朝
Owner JIANGXI UNIVERSITY OF FINANCE AND ECONOMICS
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