▎ 摘　　要

NOVELTY - The method involves mixing a 3,4-ethylenedioxythiophene monomer, polystyrene sulfonic acid, an oxidant and water, and carrying out chemical polymerization reaction to obtain a poly (3,4-ethylenedioxythiophene)/polystyrene sulfonic acid solution. The obtained product is mixed with graphene oxide water dispersion to obtain a spinning solution. The spinning solution is subjected to wet spinning to obtain a composite fiber precursor and then subjected to reduction reaction to obtain the reduced graphene oxide composite fiber. USE - Method for preparing reduced graphene oxide composite fiber used in wearable device (claimed). ADVANTAGE - The method helps in preparing reduced graphene oxide composite fiber that shows enhanced tensile resistance, improved electrical conductivity and mechanical properties. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for reduced graphene oxide composite fiber.