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Graphene-polyaniline composite material and preparation method thereof

A composite material and polyaniline technology are applied in the field of graphene-polyaniline composite materials and their preparation, and can solve the problems of affecting application, low specific capacity of composite fiber materials, and unimproved specific surface area of ​​composite materials, etc.

Active Publication Date: 2011-07-06
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when graphene is combined with a polymer, because the polymer is easy to agglomerate, it is difficult for the composite material to utilize the large specific surface area of ​​single-layer graphene, and the specific surface area of ​​the entire composite material has not been improved. At the same time, the ratio of the composite fiber material The capacity is still low, and these factors directly affect its application as electrode materials such as supercapacitors

Method used

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  • Graphene-polyaniline composite material and preparation method thereof
  • Graphene-polyaniline composite material and preparation method thereof
  • Graphene-polyaniline composite material and preparation method thereof

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preparation example Construction

[0030] see figure 2 , showing the preparation method flow chart of the graphene-polyaniline composite material of the embodiment of the present invention, the method comprises the following steps:

[0031] S01, the reduction of graphite oxide: adding graphite oxide into a solution system, reducing the graphite oxide in an ultrasonically dispersed state with a reducing agent to form a graphene solution;

[0032] S02, aniline polymerization: adding aniline, hydrogen peroxide, ferric chloride solution and hydrochloric acid solution to the graphene solution, and ultrasonically blending to form graphene-doped polyaniline;

[0033] S03, co-precipitation: reduce the ultrasonic power of the reaction system for the polymerization of aniline, slowly precipitate, then stop the ultrasonic oscillation, and stand still;

[0034] S04, filtering and washing with water: filtering out the obtained precipitated supernatant, and filtering and washing the filtered precipitate;

[0035] S05, activ...

Embodiment 1

[0045] The preparation method of the graphene-polyaniline composite material of present embodiment 1 specifically comprises the following steps:

[0046] (1) Graphite oxide reduction: the preparation method of graphite oxide is obtained according to the improved Hummers method, specifically as follows, get 1.5g graphite oxide and add it to the water of 200ml for ultrasonic dispersion to form a graphene oxide solution uniformly dispersed in a monolithic layer. Then, at room temperature, dropwise add 2 g of phenylhydrazine and several drops of hydrochloric acid solution to the obtained graphene oxide solution, continue ultrasonic oscillation and stir to disperse to form a mixed solution, which is reacted at room temperature for 72 hours to form graphene solution.

[0047] In order to detect the existence of graphene after the reaction in step (1), the graphene obtained by the reaction can be used for scanning electron microscope observation. Such as image 3 As shown, the scan...

Embodiment 2

[0054] The preparation method of the graphene-polyaniline composite material of present embodiment 2 is basically the same as embodiment 1, and the difference is that the phenylhydrazine in step (1) is replaced with other equimolar ratios of hydrazine or hydrazine hydrate, step (1) The quality of graphite oxide in ) is 2.5mg, and the quality of aniline in step (2) is 2g, then other steps and process conditions are basically the same, finally obtain the composite material of the present embodiment, polyaniline is P-type doped in this composite material The mass fraction of graphene in the composite material is about 0.10%, and the mass fraction of polyaniline is about 99.90%.

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Abstract

The invention provides a graphene-polyaniline composite material which comprises the following components in percentage by mass: 0.01-99.99% of graphene and 0.01-99.99% of polyaniline. The graphene and the polyaniline are doped to form a composite structure, and the composite structure has a micro or nano porous structure. The invention also provides a preparation method of the graphene-polyaniline composite material. In the graphene-polyaniline composite material, the graphene and the polyaniline are doped to form a porous composite structure, and such a micro or nano porous structure greatly increases the specific area of the composite material. Due to high conductivity and large specific area, the composite material has high specific capacity when being used as an electrode material. The preparation technique is simple and reliable, can effectively lower the technical cost, and has wide application prospects.

Description

technical field [0001] The invention belongs to the technical field of inorganic-organic composite materials, and in particular relates to a conductive graphene-polyaniline composite material and a preparation method thereof. Background technique [0002] With the increasing development of science and technology, people gradually turn from pure inorganic composite materials or organic composite materials to inorganic-organic composite materials, because they have the dual properties of inorganic materials and organic materials, and also have some unique composite structures. Much favored. [0003] For example, Andre K. Geim of the University of Manchester in the United Kingdom prepared graphene materials in 2004. Due to its unique structure and optoelectronic properties, it has attracted extensive attention. Single-layer graphite is considered as an ideal electrode material due to its large specific surface area, excellent electrical and thermal conductivity, and low therm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/02C08G73/02C08K7/00C08K3/04
Inventor 周明杰王要兵
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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