▎ 摘　　要

NOVELTY - A silk-derived and nitrogen-doped graphene fiber is obtained by pre-treating silk fiber, activating the pre-treated silk fiber, carrying out high temperature carbonizing and cooling to obtain the finished product. USE - Silk-derived and nitrogen-doped graphene fiber. ADVANTAGE - The graphene fiber has high specific surface area and porosity, high catalytic activity, acid resistance, alkali resistance and high stability.