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Carbon film obtained by self assembly of graphene oxide or its derivatives and preparation method thereof

A graphene and derivative technology, applied in the field of highly ordered carbon film and its preparation, can solve the problems of poor bonding between the carbon film and the substrate, difficult to control the thickness of the carbon film, complicated preparation process, etc., and achieve simple process and good mechanical properties. , the effect of simple preparation process

Active Publication Date: 2011-10-19
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of poor bonding between the existing carbon film and the substrate, complex preparation process, high cost, and difficulty in controlling the thickness of the carbon film during the preparation process. The present invention provides a self- Carbon film obtained by assembly and preparation method thereof

Method used

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  • Carbon film obtained by self assembly of graphene oxide or its derivatives and preparation method thereof
  • Carbon film obtained by self assembly of graphene oxide or its derivatives and preparation method thereof
  • Carbon film obtained by self assembly of graphene oxide or its derivatives and preparation method thereof

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specific Embodiment approach 1

[0026] Specific embodiment 1: This embodiment is a carbon film obtained by self-assembly of graphene oxide or its derivatives, which is obtained by self-assembly of graphene oxide or its derivatives as a raw material, and the conductivity of the carbon film 1~10 3 S / cm, where the graphene oxide derivative is prepared by modifying graphene oxide with organic amines or organic alcohols.

[0027] The surface of the carbon film of this embodiment is flat and smooth, has good light transmittance and good mechanical properties, the modulus is 80-120 GPa, the hardness is 7-9 Gpa; the carbon film is oriented in order, oriented along the substrate surface, and the thickness is 50nm~ 2μm.

[0028] The graphene oxide raw material in this embodiment is a commercially available product or is prepared by an existing public chemical oxidation method.

specific Embodiment approach 2

[0029] Specific embodiment two: this embodiment is different from specific embodiment one in that the conductivity of the carbon film is 1×102-9×10 2 S / cm. Other parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0030] Specific embodiment three: This embodiment is different from specific embodiment one in that the conductivity of the carbon film is 6×10 2 S / cm. Other parameters are the same as in the first embodiment.

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Abstract

The invention discloses a carbon film obtained by self assembly of graphene oxide or its derivatives and a preparation method thereof, and relates to a preparation method for a highly ordered carbon film. The objective of the invention is to solve the problems existing in the prior art that the combination between a carbon film and a substrate is poor, the preparation technology is complex, the cost is high, and the thickness of carbon films is difficult to control in the process of preparation. The carbon film provided in the invention uses graphene oxide or its derivatives as the raw material and is obtained through the process of self assembly. The carbon film is prepared by the following steps: dispersing graphene oxide or its derivatives in a solvent so as to obtain a solution, immersing a substrate into the solution and allowing the solution to stand at a constant temperature for assembly, wherein the temperature is in a range of 50 to 100 DEG C. The carbon film prepared in the invention has smooth surfaces, strong bonding force to the substrate and good light transmittance and mechanical properties; the modulus of the carbon film is 80 to 120 GPa, and the hardness is 7 to 9 Gpa; the carbon film is orderly orientated along the surface of the substrate, and the thickness of the carbon film is 10 nm to 2 mu m. The preparation process is controllable and concise and produces products with controllable thickness. The carbon film provided in the invention has broad application prospects in such fields as electrode materials, electronic chips, solar cells and high efficient catalysis.

Description

Technical field [0001] The invention relates to a highly ordered carbon film and a preparation method thereof. Background technique [0002] Carbon film material is a type of film material with important application prospects, mainly including diamond-like and graphite-like types. It has the characteristics of high strength, wear resistance, corrosion resistance, and excellent photoelectric performance. It is widely used as a thermal protection material, Grinding materials, photoelectric functional films, and high-temperature semiconductor materials. The preparation technology of carbon film includes physical vapor deposition and chemical vapor deposition, such as magnetron sputtering, ion beam sputtering, atomic layer deposition technology, etc. These technologies are generally difficult to control the deposition thickness, easy to wrinkle, large internal stress, and substrate adhesion Problems such as weak strength, high equipment cost, and difficulty in uniformly covering the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/22C04B41/85
Inventor 李垚牛永安赵九蓬
Owner HARBIN INST OF TECH
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