Preparation method of polyaniline/carbon nano tube/nano-copper composite material

A technology of carbon nanotube composite and carbon nanotube, which is applied in the direction of electrolytic capacitors, capacitors, electrical components, etc., can solve the problems of low capacitance and low conductivity, achieve the effect of pure product, improve conductivity and prevent oxidation

Inactive Publication Date: 2013-07-24
HEILONGJIANG UNIV
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  • Summary
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method of polyaniline / carbon nanotube / nano-copper composite material in order to solve the problems of low conductivity and low capacitance of the existing polyaniline / carbon nanotube conductive composite material

Method used

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  • Preparation method of polyaniline/carbon nano tube/nano-copper composite material
  • Preparation method of polyaniline/carbon nano tube/nano-copper composite material
  • Preparation method of polyaniline/carbon nano tube/nano-copper composite material

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specific Embodiment approach 1

[0023] Specific embodiment one: the preparation method of a kind of polyaniline / carbon nanotube / nano-copper composite material of this embodiment is carried out according to the following steps:

[0024] 1. Acidification treatment of carbon nanotubes: mix concentrated sulfuric acid and concentrated nitric acid evenly at a volume ratio of 3:1 to obtain a mixed solution; add carbon nanotubes to the above mixed solution at a ratio of 1g:80mL according to the mass-volume ratio Put it into a three-necked bottle with a reflux cooling device, stir and mix evenly, then heat to 50°C-80°C, and reflux for 1-3h at a stirring speed of 200-500r / min, cool to room temperature, filter, and then remove the solid phase Wash until the pH is 7.0, then put it into a vacuum drying oven, and dry it for 12 to 48 hours at a temperature of 40°C to 60°C to obtain acidified carbon nanotubes;

[0025] Two, the preparation of nano-copper / carbon nanotube composite powder: the mass volume ratio of the acidifi...

specific Embodiment approach 2

[0035] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the vacuum degree of the suction filtration and washing described in step two and step three is 2×10 4 Pa. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0036] Specific embodiment three: this embodiment is different from specific embodiments one to two in that: the dropping speed described in step three is 1 drop / 15 seconds. Others are the same as the specific embodiment 1 to 2.

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Abstract

The invention discloses a preparation method of a polyaniline / carbon nano tube / nano-copper composite material, relates to a preparation method of the polyaniline / carbon nano tube composite material, and aims at solving the problems that the existing polyaniline / carbon nano tube composite material is low in electric conductivity and low in capacitance. The method is implemented as follows: firstly, putting a carbon nano tube into mixed acid, conducting backflow processing on the carbon nano tube and then conducting vacuum drying; secondly, acidizing the carbon nano tube, adding the acidized carbon nano tube into copper sulfate solution, adding NaOH solution and hydrazine hydrate solution respectively, heating, and then conducting vacuum drying to obtain nano copper / carbon nano tube composite powder; adding the nano copper / carbon nano tube into mixed solution of aniline and hydrochloric acid, then dropping ammonium persulfate solution, heating and conducting vacuum drying to obtain the polyaniline / carbon nano tube / nano-copper composite material. According to the preparation method, the size of the nano copper particles is 5-15nm, surface active agent is not needed, the nano copper can be prevented from being oxidized, the electric conductivity of the composite electrode materials is improved, the specific capacitance value is improved, and the preparation method is applied to the field of capacitor electrode materials.

Description

technical field [0001] The invention relates to a preparation method of a polyaniline / carbon nanotube composite material. Background technique [0002] Conductive polymers are used as supercapacitor electrode materials, and their specific capacitance mainly comes from Faraday quasi-capacitance. The advantage is that the corresponding polymer structure can be selected through molecular design, so as to further improve the performance of the polymer to obtain electrode materials that meet the requirements. At present, polyaniline, polypyrrole, polyacetylene, polythiophene, etc. are studied more. [0003] Polyaniline has attracted widespread attention because of its low cost and excellent performance. Conductive polyaniline has good conductivity, doping / dedoping and relatively large specific surface area, and is an ideal electrode material for supercapacitors. For the polyaniline electrode material, it is anion that enters the positive electrode during charging and dischargin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/02C08K9/02C08K7/00C08K3/04C08K3/08H01G9/042
Inventor 赵东宇贾晓莹金政闫飞
Owner HEILONGJIANG UNIV
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