▎ 摘　　要

NOVELTY - Preparing shaped graphene fiber involves preparing a substrate, such that the outer surface of the substrate is circular, the inside is a non-circular hole, and the substrate is recorded as the substrate A, or the outside of the substrate is non-circular, the inside is a circular hole, and the substrate is referred to as the substrate B, fixing the outer circumference of substrate A to the inner wall of the capillary A, and the substrate A is perpendicular to the capillary A to obtain the spinning nozzle A, or passing the capillary B through the circular hole of the substrate B, fixing all the boundaries of the circular hole of the substrate B to the outer wall of the capillary B, and making the substrate B perpendicular to the capillary B to obtain assembly of the substrate B and capillary B, inserting the assembly of the substrate B and capillary B into the capillary C, and maintaining the coaxial relationship between the capillary B and capillary C to obtain the spinning nozzle B. USE - Method for preparing shaped graphene fiber is used for energy storage, conductive materials, tissue engineering, textile or biosensing (claimed). ADVANTAGE - The method enables to prepare shaped graphene fiber, which is simple and easy to carry out, and has high precision, and is suitable for continuously preparing large-sized graphene fibers on a large scale. DETAILED DESCRIPTION - The method further involves connecting the injection tube A to the end of the capillary A of one end of the spinning nozzle A to form the spinning device A, or opening a hole in the capillary C tube wall of the spinning nozzle B, setting one end of the capillary C to the S end, and setting the other end to the N end, locating the hole between the junction of the capillary C tube wall and substrate B and S end of capillary C, connecting the sample tube B to the hole, and sealing the S end of the capillary C to form the spinning device B, placing the spinning device A in an external coagulation bath, and then passing the graphene oxide spinning dope into the spinning device A through the sample tube A, solidifying the spinning graphene spinning dope discharged from the spinning device A in a coagulation bath to obtain a solid shaped graphene oxide fiber, and reducing the solid shaped graphene oxide fiber to obtain a solid shaped graphene fiber, such that the cross section of the solid shaped graphene fiber is consistent with the internal hollow structure shape of the substrate A, placing the spinning device B in an external coagulation bath, and then first passing the graphene oxide spinning dope from the sample tube B to the spinning nozzle N end, solidifying the spinning graphene spinning dope discharged from the spinning device B in a coagulation bath to obtain hollow shaped graphene oxide fibers, and reducing the hollow shaped graphene oxide fibers to obtain a hollow profiled graphene fiber, such that the outer portion of the hollow profiled graphene fiber has a circular cross section, and the inner hollow structure is identical to the outer non-circular structure of the substrate B.