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Independent self-support wrinkled graphene film in nano thickness and preparation method thereof

A graphene film, self-supporting technology, applied in the direction of graphene, nano-carbon, nanotechnology, etc., can solve the problem of not being able to achieve self-supporting

Active Publication Date: 2018-02-02
杭州德烯科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Furthermore, there is no work reporting the preparation of nanoscale graphene films based on graphene oxide
In general, nanoscale graphene films generally refer to polycrystalline graphene films prepared by chemical vapor deposition, which are fixed on a substrate after wet or dry transfer, and cannot be independently self-sustained in the air. support

Method used

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  • Independent self-support wrinkled graphene film in nano thickness and preparation method thereof
  • Independent self-support wrinkled graphene film in nano thickness and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Graphene oxide was prepared into a graphene oxide DMF solution with a concentration of 0.5ug / mL, and graphene oxide sheets were slowly precipitated with ethyl acetate, and the anodized aluminum oxide (AAO) was used as a substrate to form a film by suction filtration.

[0024] (2) Place the graphene oxide film attached to the AAO film in a closed container and fumigate with HI steam at 60°C for 1 hour.

[0025] (3) The above-mentioned reduced graphene oxide film is sublimated and evaporated at 100° C., and the solid transfer agent camphor is evenly coated on the surface of the graphene film, and heated for a period of time at a temperature below the melting point of the solid transfer agent by 5 degrees. Put the graphene film coated with the solid transfer agent at room temperature, and the graphene film will be automatically separated from the AAO film.

[0026] (4) Slowly volatilize the solid transfer agent from the graphene film supported by the solid transfer age...

Embodiment 2

[0030] (1) Graphene oxide was prepared into a graphene oxide DMSO solution with a concentration of 10ug / mL, and graphene oxide sheets were slowly precipitated with ethyl acetate, and the anodized aluminum oxide (AAO) was used as a substrate to form a film by suction filtration.

[0031] (2) Place the graphene oxide film attached to the AAO film in an airtight container, and fumigate with HI steam at 100°C for 5 hours.

[0032] (3) The above-mentioned reduced graphene oxide film is coated with low-temperature melting (52 degrees), and the solid transfer agent paraffin is evenly coated on the surface of the graphene film, and heated for a period of time at a temperature lower than the melting point of the solid transfer agent by 5 degrees. time. Put the graphene film coated with the solid transfer agent at room temperature, and the graphene film will be automatically separated from the AAO film.

[0033] (4) Slowly volatilize the solid transfer agent supported graphene film obt...

Embodiment 3

[0037] (1) Graphene oxide was prepared into a graphene oxide acetone solution with a concentration of 2ug / mL, graphene oxide sheets were slowly precipitated with n-hexane, and a film was formed by suction filtration with anodized aluminum oxide (AAO) as the substrate.

[0038] (2) Place the graphene oxide film attached to the AAO film in a closed container, and fumigate with HI steam at 80°C for 10 hours.

[0039] (3) The above-mentioned reduced graphene oxide film is coated with a solution, and the solid transfer agent aluminum chloride is evenly coated on the surface of the graphene film, and heated for a period of time at a temperature below the melting point of the solid transfer agent by 5 degrees. Put the graphene film coated with the solid transfer agent at room temperature, and the graphene film will be automatically separated from the AAO film.

[0040] (4) Slowly volatilize the graphene film supported by the solid transfer agent obtained above at 180°C to obtain an i...

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Abstract

The invention discloses an independent self-support wrinkled graphene film in nano thickness and a preparation method thereof. The independent self-support wrinkled graphene film in nano thickness isobtained through film formation by suction filtration of oxidized graphene prior to chemical reduction and high-temperature treatment. The independent self-support wrinkled graphene film in nano thickness is formed by single-layer graphene through physical crosslinking, wherein the graphene is complete in base structure without obvious defects and rich in wrinkles, and the content of turbostraticstructures among lamellas exceed 30%. Since the independent self-support wrinkled graphene film in nano thickness is extremely thin in thickness (16-130 nm) with a great quantity of superficial wrinkles, thereby being highly flexible.

Description

technical field [0001] The invention relates to a high-performance nano material and a preparation method thereof, in particular to a nanoscale thickness independent self-supporting wrinkled graphene film and a preparation method thereof. Background technique [0002] In 2010, two professors Andre GeiM and Konstantin Novoselov from the University of Manchester won the Nobel Prize in Physics for their first successful separation of stable graphene, which set off a wave of research on graphene around the world. Graphene has excellent electrical properties (electron mobility at room temperature can reach 2×10 5 m 2 / Vs), outstanding thermal conductivity (5000W / (MK), extraordinary specific surface area (2630M 2 / g), its Young's modulus (1100GPa) and breaking strength (125GPa). The excellent electrical and thermal conductivity of graphene completely exceeds that of metals. At the same time, graphene has the advantages of high temperature resistance and corrosion resistance, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/184B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01B2204/04
Inventor 高超彭蠡
Owner 杭州德烯科技集团有限公司
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