Single Wall Nanohorn

 

Nanohorn comprising one layer of carbon atoms

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One of the SWNT (single walled carbon nanotube) types, with an irregular horn-like shape, which may be a critical component of a new generation of fuel cells. "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." See NEC uses Carbon Nanotubes to Develop a Tiny Fuel Cell for Mobile Applications and here is a TEM image.

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One of the SWNT (single walled carbon nanotube) types, with an irregular horn-like shape.

Source

One of the SWNT (single walled carbon nanotube) types, with an irregular horn-like shape.

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