Carbon Nanohorns / Single Wall Carbon Nanohorns (SWNHs) from READE

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Reade Advanced Materials offers:

Carbon Nanohorns

Synonyms: Carbon nanohorns, single wall carbon nanohorns, SWNHs, carbon nanotubes

Carbon Nanohorn Characteristics:

Carbon nanohorns have the same graphitic carbon atom structure as normal carbon nanotubes. The main characteristic of the carbon nanohorns is that when many of the nanohorns group together an aggregate (a secondary particle) of about 100 nanometers is created. The advantage being, that when used as an electrode for a fuel cell, not only is the surface area extremely large, but also, it is easy for the gas and liquid to permeate to the inside. In addition, compared with normal nanotubes, because the nanohorns are easily prepared with high purity. It is expected to become a low-cost raw material.

Carbon Nanohorn Description:

a) Electrical conductivity -- probably the best conductor of electricity on a nanoscale level that can ever be possible.
b) Thermal conductivity -- comparable to diamond along the tube axis.
c) Mechanical -- probably the stiffest, strongest, and toughest fiber that can ever exist.
d) Chemistry of carbon -- can be reacted and manipulated with the richness and flexibility of other carbon molecules. Carbon is the basis of most materials we use every day.
e) Molecular perfection -- essentially free of defects.
f) Self-assembly -- strong van der Waals attraction leads to spontaneous roping of many nanotubes. Important in certain applications.

Chemical Properties Available:

a) Carbon

Physical Properties Available:

Usually to customer specification

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Potential Market Applications:
- a) Li-ion batteries for portable electronic devices
  b) Ultra-strong high-tech composites
  c) Conductive composites and coatings for lightning protection
  d) EMI shielding
  e) Supercapacitors
  f) Fuel cells
  g) Hydrogen storage
  h) Electron emitters for flat-panel displays and cold cathodes
  i) Artificial organs
  j) Molecular electronics
Additional Application Comments:

EC's Iijima called carbon nanohorns the next frontier for developing nano-batteries with up to 10 times the capacitance of the best lithium ion batteries. The horns are
easy to make at room temperature, and in Japan we are told that they can produce them with a 90 percent yield at a rate of 50 grams per hour. That's 50 times faster than the production of single-walled nanotubes. Nanohorn cell phone batteries are now being developed, and Nissan Motors has invested $300 million to develop fuel cells from them, Iijima said. Source: EE Times, October 2001

Packaging:

Usually to customer specification

TSCA (SARA Title III) Status:

Unknown. For further information please call the E.P.A. at 1.202.554.1404

CAS Number:

To be determined

Safety Notice:

Before using, user shall determine the suitability of the product for its intended use, and user assumes all risk and liability whatsoever in connection therewith.

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