| abstract |
Provided is a CNT fiber composed of oriented carbon nanotubes (CNT), which is thin, has a small thickness non-uniformity, has good coilability during coil processing, and has excellent conductivity. The present invention is composed of carbon nanotubes (CNT) having a thickness of 0.01 µm to 3 mm, a thickness non-uniformity of 0.2 or less, a distribution rate a as a roundness of 40% or more, and a distribution rate b of 70% or more. CNT fibers and the following steps: a spinning step of discharging an aqueous dispersion containing a carbon nanotube (CNT) and a surfactant in a coagulation bath containing an organic solvent to obtain a CNT aggregate structure having a thread shape; And a step of continuously pulling the obtained CNT aggregate structure at a linear velocity equal to or higher than the discharge linear velocity from the coagulation bath. |