(420ae) Preparation of High Performance Graphene Fibers By Wet-Spinning Method

Authors: 
Zhao, C., Nanjing University of Posts and Telecommunications
Tong, S., Nanjing University of Posts and Telecommunications
Mo, S., Nanjing University of Posts and Telecommunications
Wang, J., Nanjing University of Posts and Telecommunications
Fan, T., Peking University
Tang, W., Nanjing University of Posts and Telecommunications
Yuan, C., Nanjing University of Posts and Telecommunications
Liu, Y., Peking University Shenzhen Graduate School
Min, Y. G., Nanjing University of Posts and Telecommunications

In this study, we use lamellar graphite to prepare GO, and then integrate the large GO sheets into macroscopic fibers by wet-spinning method. We use amines alcohol solution as a new kind coagulation liquid. In the process, meters-long graphene fibers were continuously spun from GO suspensions followed by thermal reduction. By varying wet-spinning conditions, a series of graphene fibers were prepared, then, the performances of the fibers were investigated, through all of these works we find the optimal conditions to fabricating high mechanical strength graphene fibers. The as-prepared graphene fibers’s mechanical strength mechanical strength can be achieved 200 MPa, and they possessed with good flexibility, the electronic conductivity reached 38 S/cm.