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Method for preparing large-area carbon-based thin film material

A thin-film material and large-area technology, applied in chemical instruments and methods, devices for coating liquid on the surface, carbon compounds, etc., can solve the problems of lack of designability, single film performance, and non-adjustable structure, etc. Strong design, simple preparation process, and controllable surface structure

Inactive Publication Date: 2017-04-05
常州博碳环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are also reports on the application of blade coating method to the preparation of graphene oxide carbon-based thin films (ECS Transactions, 2013, 53(14): 1-9.), but the properties of the prepared thin films are single, the structure cannot be adjusted, and there is no designable

Method used

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  • Method for preparing large-area carbon-based thin film material
  • Method for preparing large-area carbon-based thin film material
  • Method for preparing large-area carbon-based thin film material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh 0.750g of graphite oxide and disperse it in 50mL of ultrapure water, stir it magnetically for 2h, then sonicate it in a water bath for 2h, then use a cell pulverizer to sonicate it for 1h, with a power ratio of 30%, and then stir it magnetically for 36h to obtain viscous graphene oxide. slurry. Spread the clean 1500-grit sandpaper on the scraping machine, adjust the scraping speed to 3cm / s, and the thickness to 50μm. Drop the slurry onto the sandpaper, apply a knife coat, and repeat the dosing and knife coat steps to obtain a uniform film. After drying at 50°C for 48 hours, the film was peeled off from the substrate to obtain a self-supporting graphene oxide film.

Embodiment 2

[0027] Weigh 0.050g of sodium dodecylbenzenesulfonate and graphene modified by sodium dodecylsulfate and disperse it in 50mL of ultrapure water, stir it magnetically for 1h, then sonicate in a water bath for 1h, and then use a cell pulverizer to sonicate for 0.5h. The power ratio is 30%, and after 1h of magnetic stirring, a viscous graphene slurry is obtained. Spread the clean PET substrate on a scraper coating machine, adjust the scraping speed to 10 cm / s, and the thickness to 20 μm. Drop the slurry onto the PET, do the knife coating, and repeat the feeding and knife coating steps to get a uniform film. Dry at 80°C for 1 h to obtain a graphene film tightly combined with the PET substrate.

Embodiment 3

[0029] Weigh 1.000g of activated carbon powder modified by sodium dodecylsulfonate and sodium glycocholate and disperse it in 50mL of ultrapure water, stir it magnetically for 5h, then sonicate in a water bath for 4h, then use a cell disruptor to sonicate for 4h with a power ratio of 30 %, and then through 72h of magnetic stirring, a viscous activated carbon slurry was obtained. Spread the clean copper foil substrate on the scraper coating machine, adjust the scraping speed to about 1cm / s, and the thickness to be 200μm. Drop the slurry onto a copper foil substrate, apply a knife coat, and repeat the dosing and knife coat steps to obtain a uniform film. After drying at 15°C for 72 hours, an activated carbon film tightly bonded to the copper foil substrate was obtained.

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Abstract

The invention relates to a method for preparing a carbon-based thin film material through a scraping coating method. The method includes the steps that copper foil, aluminum foil, titanium foil and other metal serve as bases or PET, cotton cloth, abrasive paper and other nonmetal serve as the bases, a sizing agent uniform in dispersion is coated on the bases in different surface structures in a scraping manner through the scraping coating method, and drying is performed under a certain condition so that the carbon-based thin film material can be obtained; and by selecting, adjusting and controlling the surface topography of the bases, the carbon-based thin film material closely combined with the bases and a self-supporting carbon-based thin film material capable of being stripped from the bases can be obtained. The method is simple in preparation process and high in designability on a thin film, and by selecting the different bases and adjusting and controlling the surface topography of the bases, the carbon-based thin film material in various topographic characteristics and performances can be obtained.

Description

technical field [0001] The invention belongs to the field of preparation of carbon-based film materials, in particular to a method for preparing a large-area carbon-based film material with strong designability. The prepared film has applications in the fields of heat conduction, conduction, adsorption, capacitors, and capacitive deionization electrodes. potential. Background technique [0002] Carbon-based film materials such as flexible activated carbon film, carbon nanotube film, and graphene film have great application potential in the fields of thermal conductivity, electrical conductivity, adsorption, and capacitors, which have attracted the attention of researchers in various disciplines including physics, chemistry, and materials science. Research interests, both basic research and applied development, have received extensive attention. [0003] However, at present, these carbon-based films, especially carbon nanotube films and graphene films, are difficult to achie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D1/26B05D3/00C01B32/194
Inventor 贾宝平郭洋王鹿王秋泽王小周王宏志李耀刚张青红
Owner 常州博碳环保科技有限公司