1 research outputs found
Wet-Spun Continuous Graphene Films
Macroscopic
assembled, self-standing graphene and graphene oxide
(GO) films have been demonstrated as promising materials in many emerging
fields, such as Li ion battery electrodes, supercapacitors, heat spreaders,
gas separation, and water desalination. Such films were mainly available
on centimeter-scale via the time- and energy-consuming vacuum-filtration
method, which seriously impedes their progress and large-scale applications.
Due to the incompatibility between large-scale and ordered assembly
structures, it remains a big challenge to access large-area assembled
graphene thick films. Here, we report for the first time a fast wet-spinning
assembly strategy to produce continuous GO and graphene thick films.
A 20 m long, 5 cm wide, well-defined GO film was readily achieved
at a speed of 1 m min<sup>–1</sup>. The continuous, strong
GO films were easily woven into bamboo-mat-like fabrics and scrolled
into highly flexible continuous fibers. The reduced graphene films
with high thermal and moderate electrical conductivities were directly
used as fast-response deicing electrothermal mats. The fast yet controllable
wet-spinning assembly approach paves the way for industrial-scale
utilization of graphene