SUBSTRATE WITH APPROXIMATELY VERTICALLY ALIGNED CARBON NANOTUBES

• US 20140315120A1
• Filed: 11/15/2012
• Published: 10/23/2014
• Est. Priority Date: 11/17/2011
• Status: Abandoned Application

• Current Assignee: Hitachi Zosen Corporation, Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Hitachi Zosen Corporation, Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Imanishi, Masahiro, Yamashita, Tomoya, Miyamoto, Shinji, Sugimoto, Iwao
• Application Number:
  US14/358,191
• Publication Number:
  US 20140315120A1
• Time in Patent Office: Days
• US Class Current: 429/523
• CPC Class Codes: B82Y 30/00 Nanotechnology for materials or surface science, e.g. nanocomposites
• CPC Class Codes: B82Y 40/00 Manufacture or treatment of nanostructures
• CPC Class Codes: C01B 2202/08 Aligned nanotubes
• CPC Class Codes: C01B 2202/36 Diameter
• CPC Class Codes: C01B 32/162 characterised by catalysts
• CPC Class Codes: H01M 2008/1095 Fuel cells with polymeric electrolytes
• CPC Class Codes: H01M 4/96 Carbon-based electrodes
• CPC Class Codes: Y02E 60/50 Fuel cells

Abstract

An object of the present invention is to provide a substrate with approximately vertically aligned carbon nanotubes, the carbon nanotubes configured to have excellent transferability and be able to transfer a carbon nanotube layer that is more uniform in thickness than ever before. Disclosed is a substrate with approximately vertically aligned carbon nanotubes, wherein the carbon nanotubes are approximately vertically aligned on the substrate, and wherein, at the substrate side rather than the middle part of the longitudinal direction of the carbon nanotubes, there is a part where the number density of the carbon nanotubes in an approximately parallel plane to the substrate, is smaller than that in other parts.

Claims

1. A substrate for transferring carbon nanotubes,

wherein carbon nanotubes are approximately vertically aligned on the substrate, and

wherein, at the substrate side rather than the middle part of the longitudinal direction of the carbon nanotubes, there is a part where the number density of the carbon nanotubes in an approximately parallel plane to the substrate, is smaller than that in other parts.

2. The substrate for transferring carbon nanotubes according to claim 1, wherein the diameter of the carbon nanotubes in the substrate interface part is larger than the diameter of the carbon nanotubes in the part where the number density of the carbon nanotubes is smaller than that in other parts.

3. A substrate for transferring carbon nanotubes,

wherein carbon nanotubes are approximately vertically aligned on the substrate, and

wherein, at the substrate side rather than the middle part of the longitudinal direction of the carbon nanotubes, there is a part where the diameter of the carbon nanotubes in an approximately parallel plane to the substrate, is smaller than that in other parts.

4. The substrate for transferring carbon nanotubes according to claim 3, wherein the diameter of the carbon nanotubes in the substrate interface part is larger than the diameter of the carbon nanotubes in the part where the diameter of the carbon nanotubes is smaller than that in other parts.

5. A substrate for transferring carbon nanotubes,

wherein carbon nanotubes are approximately vertically aligned on the substrate, and

wherein, at the substrate side rather than the middle part of the longitudinal direction of the carbon nanotubes, there is a part where the number density and diameter of the carbon nanotubes in an approximately parallel plane to the substrate, are smaller than those in other parts.

6. The substrate for transferring carbon nanotubes according to claim 5, wherein the diameter of the carbon nanotubes in the substrate interface part is larger than the diameter of the carbon nanotubes in the part where the number density and diameter of the carbon nanotubes are smaller than those in other parts.