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Polyaniline-graphene composite film and its preparation method, cells and e-books

A composite material thin film, graphene technology, applied in battery electrodes, circuits, electrical components and other directions, can solve the problems of defective material structure, complicated preparation process, can not be used as electrode materials, etc., to achieve good quality and thickness controllable. Effect

Active Publication Date: 2012-08-08
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide a method for preparing a polyaniline-graphene composite film and a prepared composite film for the problems in the prior art that the preparation process is complicated and the material structure is defective so that it cannot be used as an electrode material. Material film and batteries and e-books prepared using it as electrode materials, the preparation method has simple process, convenient operation, and the preparation process is environmentally friendly. Compared with the prior art, the present invention has the advantages of simplicity, practicality and high efficiency. The prepared polymer Aniline-graphene composite film is continuous, with controllable thickness and good quality, and can be used as electrode material for batteries and e-books and other fields

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preparation example Construction

[0037] In the preparation method of the polyaniline-graphene composite material film, the preparation method of the aniline-graphene monomer modified electrode includes: the aniline-graphene monomer modified electrode is prepared by preparing a Nafion suspension of graphene and aniline, It is obtained by uniformly coating the Nafion suspension of graphene and aniline on the electrode substrate and drying in a vacuum.

[0038] Specifically, the above-mentioned preparation of the Nafion suspension of graphene and aniline includes: adding graphene and aniline to the Nafion solution at room temperature to fully disperse the suspension; the graphene is 0.002-0.008 g parts by weight, and the aniline is 0.01 -0.09 mL by volume, the Nafion solution is 0.1-5 mL by volume and the concentration is 0.01 to 5 wt%.

[0039] The above-mentioned fully dispersed suspension is specifically: magnetic stirring or ultrasonic oscillation dispersion, magnetic stirring speed 10-60r / min, stirring time 10-5...

Embodiment 1

[0054] Add 0.002g of graphene and 0.01mL of aniline to 0.1mL of Nafion solution with a concentration of 0.01wt%, sonicate for 5min, ultrasonic power of 800w, and control the dispersion temperature of ultrasonic vibration at 20℃ through cold water circulation to obtain uniformly dispersed graphene- Aniline suspension. Take 0.01mL of the suspension and spin-coat it on a 12mm2 electrode substrate (polythiophene film), and dry it in a vacuum at 25°C for 30min with a vacuum of 2KPa to obtain an aniline-graphene modified electrode (AN-GNS). figure 1 As shown, 1 is a graphene sheet, 2 is an aniline monomer, and 3 is an electrode substrate. The graphene sheet 1 has an irregular shape, and the aniline monomer 2 is uniformly dispersed on the surface of the electrode substrate 3. It is electropolymerized by constant current method, and the electrolyte is 0.5mol·L -1 HNO 3 Solution, AN-GNS is working electrode, platinum is auxiliary electrode, saturated calomel electrode is reference elec...

Embodiment 2

[0058] Add 0.005g of graphene and 0.05mL of aniline to 2.5mL of Nafion solution with a concentration of 1wt%, sonicate for 30min, ultrasonic power of 800w, and control the dispersion temperature of ultrasonic vibration at 20℃ through cold water circulation to obtain uniformly dispersed graphene-aniline suspension. Take 0.01 mL of the suspension and spin-coated on a 12 mm2 electrode substrate (polythiophene film), and vacuum-dried at 25°C for 30 min with a vacuum degree of 2KPa to obtain an aniline-graphene modified electrode (AN-GNS). It is electropolymerized by constant current method, and the electrolyte is 0.5mol·L -1 HNO 3 Solution, AN-GNS is working electrode, platinum is auxiliary electrode, saturated calomel electrode is reference electrode, current density is 5mA / cm 2 , The polymerization time is 70s, and the thickness of the polyaniline-graphene composite film is about 0.05mm. The test result of the specific capacitance of the composite film is similar to the first emb...

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Abstract

The invention provides a polyaniline-graphene composite film preparation method, the prepared composite film, cells and e-books which are prepared by using the composite film as an electrode material. By the adoption of an electrochemical polymerization method, aniline-graphene monomer modified elecrodes are used as positive electrodes or working electrodes, and the electrodes are placed in an acidic electrolyte to prepare the thickness-controllable polyaniline-graphene composite film on the surface of the positive electrodes or working electrodes. The technology is simple and practical. As a flexible transparent electrode, the prepared polyaniline-graphene composite film can be used to prepare cells or displace traditional ITO electrodes for electronic products such as e-books.

Description

Technical field [0001] The invention belongs to the technical field of polyamine compositions and graphite-containing organic conductive materials, and specifically relates to a method for preparing a polyaniline-graphene composite film, the prepared composite film, and a battery and e-book prepared using the composite film as electrode material. Background technique [0002] Since Hideki Shirakawa first discovered conductive polymers in 1974, research in the field of conductive polymers has developed rapidly. The outstanding advantage of conductive polymers is that they not only have the electrical and optical properties of metals and inorganic semiconductors, but also have the flexible mechanical properties and processability of organic polymers, as well as electrochemical redox activity. These characteristics determine that conductive polymer materials will play an important role in the development and development of organic optoelectronic devices and electrochemical devices i...

Claims

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Application Information

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IPC IPC(8): H01M4/36G09B5/06
CPCY02E60/12Y02E60/10
Inventor 陈娟柳在健
Owner BOE TECH GRP CO LTD
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