Provided is a graphene-based long fiber comprising chemically functionalized graphene sheets that are chemically bonded with one another having an inter-planar spacing d002 from 0.36 nm to 1.5 nm as determined by X-ray diffraction and a non-carbon element content of 0.1% to 40% by weight, wherein the functionalized graphene sheets are substantially parallel to one another and parallel to the fiber axis direction and the fiber contains no core-shell structure, have no helically arranged graphene domains, and have a length no less than 0.5 cm and a physical density from 1.5 to 2.2 g/cm3. The graphene fiber typically has a thermal conductivity from 300 to 1,600 W/mK, an electrical conductivity from 600 to 15,000 S/cm, or a tensile strength higher than 1.0 GPa.
提供了一种
石墨烯基长纤维,该纤维由
化学功能化的
石墨烯片组成,这些
石墨烯片彼此
化学键合,经 X 射线衍射测定,其平面间距 d002 为 0.36 nm 至 1.5 nm,非碳元素含量为 0.1%到40%(重量百分比),其中功能化
石墨烯薄片基本上彼此平行并平行于纤维轴线方向,纤维不包含核壳结构,没有螺旋排列的
石墨烯域,长度不小于0.5厘米,物理密度为1.5到2.2克/立方厘米。
石墨烯纤维的热导率通常为 300-1,600 W/mK,电导率为 600-15,000 S/cm,抗拉强度高于 1.0 GPa。