Conductive carbon nanotube-metal composite ink

Patent metadata

Field	Value
Publication number	US-9418769-B2
Application number	US-92615210-A
Country	US
Kind code	B2
Filing date	Oct 28, 2010
Priority date	Feb 18, 2010
Publication date	Aug 16, 2016
Grant date	Aug 16, 2016

Abstract

An electrically conductive carbon nanotube-metal composite ink may include a carbon nanotube-metal composite in which metal nanoparticles are bound to a surface of a carbon nanotube by chemical self-assembly. The electrically conductive carbon nanotube-metal composite ink may have higher electrical conductivity than a commonly used metal nanoparticles-based conductive ink, and may also be used in deformable electronic devices that are flexible and stretchable, as well as commonly used electronic devices, due to the bending and stretching properties of the carbon nanotube itself.

First claim

What is claimed is:

1. A conductive carbon nanotube-metal composite ink comprising:
a carbon nanotube-metal composite including at least one carbon nanotube and a self-assembled layer on a surface of the at least one carbon nanotube, wherein the self-assembled layer includes first metal nanoparticles;
second metal nanoparticles separate from the carbon nanotube-metal composite; and
an organic solvent,
wherein the amount of the carbon nanotube-metal composite is in a range of about 0.005 to about 5 wt %, the amount of the second metal nanoparticles is in a range of about 1 to about 15 wt %, and the amount of the organic solvent is in a range of about 80 to about 98.995 wt % based on the total wt % of the carbon nanotube-metal composite, the second metal nanoparticles and the organic solvent.

2. The conductive carbon nanotube-metal composite ink of claim 1 , wherein the carbon nanotube-metal composite further comprises:
a compound having an aromatic hydrocarbon group and a thiol group functionalized with the first metal nanoparticles,
wherein the functionalized first metal nanoparticles are deposited on the surface of the at least one carbon nanotube to form the self-assembled layer.

3. The conductive carbon nanotube-metal composite ink of claim 2 , wherein the compound having an aromatic hydrocarbon group and a thiol group comprises at least one selected from the group consisting of benzyl mercaptan, benzenethiol, triphenylmethanethiol, bromobenzyl mercaptan, aminothiophenol, 2-phenylethanethiol, and mixtures thereof.

4. The conductive carbon nanotube-metal composite ink of claim 1 , wherein the at least one carbon nanotube comprises at least one selected from the group consisting of a single-walled carbon nanotube, a double-walled carbon nanotube, a multi-walled carbon nanotube, a carbon nanotube bundle, and mixtures thereof.

5. The conductive carbon nanotube-metal composite ink of claim 1 , wherein the organic solvent comprises at least one selected from the group consisting of α-terpineol, polyvinylpyrrolidone, ethylene glycol, diethylene glycol, polyethylene glycol, dimethylformamide, poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonate), butyl benzene, methanol, 2-methoxy ethanol, and N-methyl-2-pyrrolidone.

6. The conductive carbon nanotube-metal composite ink of claim 5 , wherein the organic solvent is a mixed solvent of α-terpineol and ethylene glycol.

7. The conductive carbon nanotube-metal composite ink of claim 6 , wherein α-terpineol and ethylene glycol are mixed at a weight ratio in a range of about 70:30 to about 95:5.

8. The conductive carbon nanotube-metal composite ink of claim 1 , wherein the first metal nanoparticles are deposited on the surface of the at least one carbon nanotube uniformly.

9. The conductive carbon nanotube-metal composite ink of claim 1 , wherein the first metal nanoparticles comprise at least one selected from the group consisting of silver (Ag), copper (Cu), gold (Au), nickel (Ni), aluminum (Al), platinum (Pt), magnesium (Mg), palladium (Pd), iron (Fe), and alloys thereof.

10. The conductive carbon nanotube-metal composite ink of claim 1 , wherein the second metal nanoparticles comprise at least one selected from the group consisting of silver (Ag), copper (Cu), gold (Au), nickel (Ni), aluminum (Al), platinum (Pt), magnesium (Mg), palladium (Pd), iron (Fe), and alloys thereof.

Assignees

• Chung Jae-Woo
• Baik Seung-Hyun
• Kim Joong-Hyuk
• Ma ru-jun
• Oh Young-Seok
• Suh Dae-Woo
• Samsung Electronics Co Ltd

Inventors

• Chung Jae-Woo
• Baik Seung-Hyun
• Kim Joong-Hyuk
• Ma ru-jun
• Oh Young-Seok
• Suh Dae-Woo

Classifications

• H01B1/02 Primary

  mainly consisting of metals or alloys · CPC title

• B82Y30/00

  Nanotechnology for materials or surface science, e.g. nanocomposites · CPC title

• C01B31/0273

  Chemistry & Metallurgy · mapped topic

• H01B1/04

  mainly consisting of carbon-silicon compounds, carbon or silicon · CPC title

• B82Y40/00

  Manufacture or treatment of nanostructures · CPC title