▎ 摘　　要

NOVELTY - Method for preparing conductive fiber containing surface polypyrrole pleated core-shell structure involves (a) preparing the spinning solution, extruding the spinning solution into the coagulation bath solution by wet spinning or syringe, precipitating the spinning solution in the coagulation bath solution to obtain the gel fiber, (b) soaking the gel fiber in the oxidizing agent solution and the pyrrole monomer for time, and drying after the reaction is completed to obtain the polypyrrole gel fiber, and (c) reducing the polypyrrole gel fiber to obtain a conductive fiber with a polypyrrole pleated core-shell structure on the surface. USE - The method used for preparing conductive fiber containing surface polypyrrole pleated core-shell structure (claimed), which is used in energy conversion, energy storage, and sensors. ADVANTAGE - The method is simple, cost-effective, and produces the product on a large scale, increases the specific surface area of the fiber, and improves fiber's capacitance performance and piezoresistive performance.