Method for preparing graphene film

A graphene film and film technology, applied in the field of graphene, can solve problems such as environmental pollution, graphene is not easy to form a film, and process conditions are difficult to control, so as to achieve the effect of simple process flow

Inactive Publication Date: 2015-03-25
BOE TECH GRP CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] The embodiment of the present invention provides a kind of graphene thin film preparation method, and its technological process is simple, overcomes the problems that graphene is not easy to form thin film in the prior art, process condition is difficult to control and easily brings pollution to the environment,

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Embodiment Construction

[0030] The preparation method of the graphene film preparation method of the present invention is introduced below in conjunction with specific examples.

[0031] The processing steps of the preparation method for preparing graphene film provided by the embodiment of the present invention are as follows: figure 1 shown, including but not limited to the following steps:

[0032] (1) graphene oxide acidic solution is coated on the magnesium film;

[0033] (2) drying the magnesium film deposited with graphite oxide;

[0034] (3) The graphene film is peeled off from the magnesium film.

[0035] Due to the method of preparing graphene using hydrazine hydrate as a reducing agent, the reducibility of hydrazine hydrate is too strong to cause a violent reaction and affect the quality of the graphene film. At the same time, the strong toxicity of hydrazine hydrate pollutes the environment. After a complicated waste gas treatment process, the method of vacuum thermal expansion require...

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Abstract

The invention relates to a method for preparing a graphene film. The method comprises the following steps: coating a graphene oxide acid solution on a magnesium film, drying the magnesium film deposited with graphene oxide, and dissolving the magnesium film by using diluted acid, thereby obtaining the graphene film. The method is simple in process condition, environmental friendly, low in cost and beneficial for large-scale preparation of the graphene film.

Description

technical field [0001] The invention relates to the technical field of graphene, in particular to a method for preparing a graphene film. Background technique [0002] Graphene is a new type of material in which carbon atoms are tightly packed into a hexagonal lattice structure in two-dimensional space, and is the basic unit of zero-dimensional fullerene, one-dimensional carbon nanotubes and three-dimensional graphite. Since Novoselov et al. obtained independent graphene in 2004, due to its excellent mechanical and physical properties, it has rapidly become a hot spot in material science research. At present, graphene research has been widely carried out in various fields. For example, graphene can be used to prepare Field emission transistors (FETs) and field emission displays have potential application prospects in the fields of sensors, solar cells, lithium-ion batteries, supercapacitors and liquid crystal displays. Among them, graphene films can replace polysilicon, ITO ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04
Inventor 张大成董文储苏京周影
Owner BOE TECH GRP CO LTD
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