Method for making carbon fiber film

Patent metadata

Field	Value
Publication number	US-2016023903-A1
Application number	US-201414526449-A
Country	US
Kind code	A1
Filing date	Oct 28, 2014
Priority date	Jul 25, 2014
Publication date	Jan 28, 2016
Grant date	—

Abstract

A method for making carbon fiber film includes drawing a carbon nanotube film from a carbon nanotube array. The carbon nanotube film is successively passed through a first room and a second room. A carrier gas and a carbon source gas are supplied to the first room and a carbon layer is formed on the carbon nanotube film located in the first room. The carbon nanotube film with the carbon fiber film is taken into the second room from the first room, and the carbon layer is graphitized.

First claim

What is claimed is:

1 . A method for making carbon fiber film comprising:
drawing a carbon nanotube film from a carbon nanotube array, and making the carbon nanotube film successively pass through a first room and a second room; supplying a carrier gas and a carbon source gas to the first room and forming a carbon layer on the carbon nanotube film located in the first room; and taking the carbon nanotube film with the carbon fiber film into the second room from the first room, and graphitizing the carbon layer.

2 . The method of claim 1 , wherein in a process of the forming and graphitizing the carbon layer, and the carbon nanotube film is suspended.

3 . The method of claim 2 , wherein one end of the carbon nanotube film is connected to the carbon nanotube array, and another end of the carbon nanotube film is held by a supporting shaft.

4 . The method of claim 1 , wherein the forming the carbon layer comprises:
supplying the carrier gas to the first room; supplying the carbon source gas to the first room; and heating the first room to a temperature from about 800 degrees Celsius to about 1000 degrees Celsius, and cracking the carbon source gas to form a plurality of amorphous carbons, wherein the plurality of amorphous carbons is deposited on the carbon nanotube film in the first room.

5 . The method of claim 4 , further comprising depositing the plurality of amorphous carbons on a surface of a plurality of carbon nanotubes of the carbon nanotube film, and in a plurality of micropores formed by adjacent carbon nanotubes.

6 . The method of claim 5 , wherein the carbon layer encloses each of the plurality of carbon nanotubes.

7 . The method of claim 1 , wherein a thickness of the carbon layer is greater than or equal to 5 nanometers.

8 . The method of claim 1 , wherein a thickness of the carbon layer is greater than or equal to 100 nanometers.

9 . The method of claim 1 , wherein the carbon nanotube film successively passes through the entire first room and the entire second room by using a drawing tool, and the carbon nanotube film is fixed on a supporting shaft.

10 . The method of claim 9 , wherein when the supporting shaft is rolled, the carbon nanotube film continues to be pulled from the carbon nanotube array, and the carbon nanotube film with the carbon layer in the first room is pulled into the second room.

11 . The method of claim 1 , wherein a pressure in the first room is in a range from about 50 Pa to about 1000 Pa.

12 . The method of claim 1 , wherein a pressure in the second room is in a range from about 50 Pa to about 1000 Pa.

13 . The method of claim 1 , further graphitizing the carbon layer at a temperature from about 2000 degrees Celsius to about 3000 degrees Celsius.

14 . The method of claim 1 , wherein the carbon layer is graphitized to form a plurality of graphene sheets joined with the carbon nanotube film by a covalent bond.

15 . The method of claim 1 , further comprising depositing a plurality of conductive particles after graphitizing the carbon layer.

16 . The method of claim 15 , wherein the plurality of conductive particles comprises alloy nanoparticles, metal-oxide nanoparticles, graphite oxide composite nanoparticles, or their combinations.

17 . A method for making carbon fiber film comprising:
drawing a carbon nanotube film from a carbon nanotube array; forming a carbon layer on the carbon nanotube film by cracking a carbon source gas; and graphitizing the carbon layer.

18 . The method of claim 17 , further comprising pulling the carbon nanotube film into a first room, and supplying a carrier gas and the carbon source gas to the first room to form the carbon layer in the first room.

19 . The method of claim 17 , further comprising making the carbon nanotube film with the carbon layer into a second room, and heating the second room to a temperature from about 2000 degrees Celsius to about 3000 degrees Celsius for graphitizing the carbon layer.

20 . The method of claim 17 , further comprising depositing a plurality of conductive particles after graphitizing the carbon layer.

Assignees

• Univ Tsinghua
• Hon Hai Prec Ind Co Ltd

Inventors

• Jiang Kai-Li
• Wang Jia-Ping
• Fan Shou-Shan
• Lin xiao-yang
• Zhao Wei
• Liu Peng

Classifications

• C01B32/184 Primary

  Preparation · CPC title

• C01B31/0446

  Chemistry & Metallurgy · mapped topic

• C01B31/0226 Primary

  Chemistry & Metallurgy · mapped topic

• D01F9/12

  Carbon filaments; Apparatus specially adapted for the manufacture thereof · CPC title

• C01B32/16

  Preparation · CPC title