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Furukawa, AIST apply Wet-spinning Method to Produce Polymer-free, High-density Carbon Nanotube.

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Tokyo, Dec 6, 2012 - (JCN) - Furukawa Electric and AIST have produced polymer-free carbon nanotube fibers with with the world's highest electrical conductivity using a wet-spinning method.

The partners first analyzed the conditions for preparation of CNT dispersion liquids and types of congealed liquid, finding that CNT fibers could be produced under certain conditions even with the use of organic solvent that does not contain polymers as congealed liquid.

With the absence of polymer components, an insulating body, the CNT fibers have a high electrical conductivity nearly 20 times greater than that of the conventional wet-spinning method using polymers as congealed liquid.

At present, CNT fibers fall short of regular copper wires in terms of electrical conductivity, but CNTs are stronger and lighter than metals. By maximizing these characteristics, the researchers will continue to add improvements in pursuit of development of next-generation electric wires that match the conductivity of copper wires.

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Publication:JCNN News Summaries
Date:Dec 30, 2012
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