CARBON NANOTUBE ASSEMBLY AND PROCESS FOR PRODUCING THE SAME

摘要

An aggregate of carbon nanotubes satisfying all the following requirements (1) to (3): (1) the volume resistivity is from 1×10 -5 ©·cm to 5×10 -3 ©·cm; (2) at least 50 out of 100 carbon nanotubes are double-walled carbon nanotubes in observation by a transmission electron microscope; and (3) the weight loss from 200°C to 400°C in thermogravimetry at a temperature rise of 10°C/min is from 5% to 20%. The object is to provide an aggregate of carbon nanotubes of high electrical conductivity and a method for producing such aggregate of carbon nanotubes easily with high yield.