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Iodine doped carbon nanotube cables exceeding specific electrical conductivity
 

Summary: Iodine doped carbon nanotube cables
exceeding specific electrical conductivity
of metals
Yao Zhao1
*, Jinquan Wei1,2
*, Robert Vajtai1
, Pulickel M. Ajayan1
& Enrique V. Barrera1
1
Department of Mechanical Engineering and Materials Science, Rice University, Houston, United States, 2
Department of Mechanical
Engineering, Tsinghua University, China.
Creating highly electrically conducting cables from macroscopic aggregates of carbon nanotubes, to replace
metallic wires, is still a dream. Here we report the fabrication of iodine-doped, double-walled nanotube
cables having electrical resistivity reaching ,1027
V.m. Due to the low density, their specific conductivity
(conductivity/weight) is higher than copper and aluminum and is only just below that of the highest specific
conductivity metal, sodium. The cables exhibit high current-carrying capacity of 104
,105
A/cm2

  

Source: Ajayan, Pulickel M. - Department of Mechanical Engineering and Materials Science, Rice University

 

Collections: Materials Science