Abstract: Graphene and related composite materials have become a popular research topic. Up to now, a lot of efforts have been made to investigating the potential applications of graphene composite materials in such fields as energy-storing materials, conversion equipment, sensor and conducting wire. Graphene composite fiber outperforms multi-dimensional materials such as graphene-based aerosol and graphene composite membrane in terms of mechanical properties and conductivity. Moreover, graphene fiber can be curved, knotted, or even woven into flexible conductive fabric. The paper introduces main production methods, properties and applications of graphene fiber and anticipates its future development.

Key words: graphene; graphene composite fiber; electrical conductivity; mechanical property