Carbon nanotube composite fiber and method for manufacturing the same

A method for manufacturing a carbon nanotube composite fiber comprising:

• preparing a carbon nanotube raw material;
• reacting the carbon nanotube raw material with a conductive polymer to obtain a carbon nanotube covalently bonded to the conductive polymer;
• forming a spinning dope obtained by dispersing the carbon nanotube covalently bonded to the conductive polymer in a solvent;
• and
• spinning the spinning dope to obtain a carbon nanotube composite fiber, wherein
• the conductive polymer comprises one or more selected from Chemical Formulas 1 to 3:
• in Chemical Formulas 1 to 3, n is an integer equal to or larger than 1.