Methods for preparing large-area graphene film and large-area graphene composite films

A graphene film, large-area technology, applied in graphene, chemical instruments and methods, nanotechnology for materials and surface science, etc., can solve the problems of high preparation cost, long suction filtration time, inconvenience, etc. The effect of flexibility and flatness, no pollution to the environment, and easy manipulation
CN103265012AInactive Publication Date: 2013-08-28卫辉市卓力科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
卫辉市卓力科技有限公司
Publication Date
2013-08-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for preparing a large-area graphene film. The method comprises the following steps of pouring a graphene oxide aqueous solution on a paper base material to obtain a uniformly-covering graphene oxide film, carrying out drying curing treatment, and dipping the paper base material with the graphene oxide film into hydroiodic acid for a reduction reaction, wherein in the reduction reaction, the paper base material is hydrolyzed under the acidic condition and simultaneously, reacts with an acid to produce bubbles so that the graphene oxide film is automatically separated from the paper base material and the large-area graphene film product is obtained. The invention also discloses a method for preparing the graphene film or large-area graphene composite films. The methods can realize graphene reduction without a high-temperature or a toxic reduction reagent, can conveniently and fast realize film stripping to produce large-area film products and are suitable for large-scale industrial production.
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Description

technical field

[0001] The invention belongs to the technical field of graphene preparation, and more specifically relates to a method for preparing large-area graphene and its composite film. Background technique

[0002] With the development of modern technology, in order to meet the design and power requirements of flexible and portable electronic devices (such as rollable displays, wearable electronics, etc.), making ultra-light, flexible and safe energy storage devices is becoming a research hotspot. . As a new type of carbon material, graphene film is expected to be used in many fields such as energy storage due to its large specific surface area, high mechanical properties, excellent electron transport ability, relatively inert electrochemical properties and low cost. widely used.

[0003] At present, the methods used to prepare graphene films mainly include spin coating, spray coating, suction filtration, and chemical vapor deposition (CVD), among which spin coatin...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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