石墨烯复合纤维材料研究进展

石墨烯具有优越的力学、电学、热学等性能。石墨烯纳米片组装成石墨烯纤维,将石墨烯优异的性能应用到先进的宏观材料中,石墨烯纤维可用于组装柔性电极、导电织物等智能器件。不同的制备方法赋予石墨烯纤维不同的功能化性能,比如高温石墨化处理会大大减少纤维的缺陷,从而获得很高的力学性能;通过掺杂不同元素,可以使石墨烯纤维具有非常好的导电性和导热性;通过界面协同作用增强石墨烯片层间的界面强度,使石墨烯纤维在提高力学性能的同时,保证较高的导电性;限域水热法制备,可以通过控制玻璃毛细管的形状来获得不同宏观形状的石墨烯纤维。综述了石墨烯纤维研究的最新进展,主要关注不同的制备方法以及后处理过程对石墨烯纤维的力学性能、电学性能以及功能化应用的影响。

Progress in Research of Graphene Nanocomposite Fibers

Graphene has superior mechanical,electrical and thermal properties.Graphene fiber(GF)is an ideal bridge for integrating the excellent properties of graphene nanosheets into advanced,macroscopic,and functional materials for applications.Different fabrication techniques endow GF with different functional applications.For example,high temperature graphitization will greatly reduce the defects of fibers in all scales and achieve high mechanical properties.Through doping with different elements,the electrical conductivity and thermal conductivity of graphene fibers are dramatically enhanced.The synergistic interfacial interaction of graphene sheets could endow the graphene fibers with excellent mechanical properties and electrical conductivity at the same time.The GF fabricated through dimensionally confined hydrothermal strategy could be modified to different macroscopic shapes by controlling the shape of the glass capillary.This paper summarizes the significant advances in GFs,including the different preparation and the post-treating processes.