▎ 摘　　要

NOVELTY - Preparing three-dimensional graphene fiber by thermal chemical vapor deposition involves making precursor fibers of three-dimensional graphene fiber materials. The carbon-containing polymers are prepared by spinning. The precursor fiber obtained is stabilized in an appropriate temperature and atmosphere. The stabilized precursor fiber obtained is carbonized at a suitable atmosphere and temperature to obtain carbon fiber. USE - Method for preparing three-dimensional graphene fiber by thermal chemical vapor deposition for functional composite material, water treatment, electromagnetic shielding, sensors and energy field. DETAILED DESCRIPTION - Preparing three-dimensional graphene fiber by thermal chemical vapor deposition involves making precursor fibers of three-dimensional graphene fiber materials. The carbon-containing polymers are prepared by spinning. The precursor fiber obtained is stabilized in an appropriate temperature and atmosphere. The stabilized precursor fiber obtained is carbonized at a suitable atmosphere and temperature to obtain carbon fiber. The carbon fibers are grown in a suitable reaction atmosphere and temperature by thermal chemical vapor deposition to grow vertically oriented graphene sheets to obtain three-dimensional graphene fibers. An INDEPENDENT CLAIM is included for a three-dimensional graphene fiber material, where graphene sheet is vertically grown on the surface of the fiber and has excellent electrical conductivity.