Continuous production method of fibrous carbon nanohorn aggregate

Patent metadata

Field	Value
Publication number	US-11511998-B2
Application number	US-201817059086-A
Country	US
Kind code	B2
Filing date	May 29, 2018
Priority date	May 29, 2018
Publication date	Nov 29, 2022
Grant date	Nov 29, 2022

Abstract

The present invention addresses the problem of providing a method for producing a fibrous carbon nanohorn aggregate with higher efficiency. According to one embodiment of the present invention, a method for producing a carbon nanohorn aggregate comprising a fibrous carbon nanohorn aggregate, is provided, which includes a step (a) of fixing the end of a rod-shaped carbon target to a fixing jig, and a step (b) of irradiating the rod-shaped carbon target with a laser light, and moving the irradiation position of the laser light in the longitudinal direction of the rod-shaped carbon target without rotating the rod-shaped carbon target.

First claim

The invention claimed is:

1. A method for producing a carbon nanohorn aggregate comprising a fibrous carbon nanohorn aggregate, the method comprising:
a step (a) of fixing an end of a rod-shaped carbon target to a fixing jig, and
a step (b) of irradiating the rod-shaped carbon target with a laser light, and moving a irradiation position of the laser light in a longitudinal direction of the rod-shaped carbon target without rotating the rod-shaped carbon target,
wherein a spot diameter of the laser light is 0.5 mm to 5 mm, and a width of the rod-shaped carbon target is 1 mm to 20.5 mm.

2. A method for producing a carbon nanohorn aggregate according to claim 1 , wherein the step (a) is a step of fixing ends of a plurality of rod-shaped carbon targets to the fixing jig, and
the method further comprising a step (c) of rotating the fixing jig after the step (b), so as to switch the irradiation position of the laser light to another rod-shaped carbon target.

3. A method for producing a carbon nanohorn aggregate according to claim 1 , wherein in the step (b), the irradiation position of the laser light is moved from an end portion not fixed by the fixed jig to an end portion fixed by the fixed jig.

4. A method for producing a carbon nanohorn aggregate according to claim 1 , wherein the rod-shaped carbon target has a depth of 1 mm to 20 mm.

5. A member for manufacturing a carbon nanohorn aggregate comprising a fibrous carbon nanohorn aggregate, the member comprising:
a plurality of rod-shaped carbon targets and a fixing jig for fixing the plurality of rod-shaped carbon targets at an end of the fixing jig,
wherein the rod-shaped carbon target has a width of 1 mm to 20.5 mm.

6. The manufacturing member according to claim 5 , wherein the rod-shaped carbon target has a depth of 1 mm to 20 mm.

Assignees

• Nec Corp

Inventors

• Yuge Ryota

Classifications

• C01B2204/02

  Single layer graphene · CPC title

• C01B2204/22

  Electronic properties · CPC title

• C01P2004/03

  obtained by SEM · CPC title

• B01J19/121

  Coherent waves, e.g. laser beams (lasers per se H01S3/00) · CPC title

• C01P2004/04

  obtained by TEM, STEM, STM or AFM · CPC title