Preparation method of graphene fibers

Abstract

The invention discloses a preparation method of graphene fibers. The preparation method comprises the following steps: (1), a mixture of a graphene oxide solution and a water-soluble reducing agent is added into a tubular reactor, wherein the water-soluble reducing agent is one or more of ascorbic acid, sodium ascorbate, sodium citrate, HI, HBr, NaHSO3, Na2S, ethylenediamine, p-phenylenediamine and hydroquinone; (2), the tubular reactor in the step (1) is heated, and graphene oxide is reduced and assembled to aqueous graphene gel fibers, and the heating temperature is 60-95 DEG C; and (3), the aqueous graphene gel fibers obtained in the step (2) is dried to obtain the graphene fibers. The preparation method is simple to operate, mild in conditions and low in raw material cost; and the graphene fibers obtained with the preparation method are uniform in structure, excellent in mechanical property and easiness in functionalization.

Description

Technical field

[0001] The invention relates to a method for preparing graphene fibers. Background technique

[0002] As the most basic structural unit of all carbon materials, graphene has a true single atomic layer thickness and a strict two-dimensional structure, and has high mechanical strength, elasticity, thermal conductivity, electrical conductivity, and quantum Hall effect. Since the British scientists Andrejeim and Kostiano Voseno won the Nobel Prize in 2010 for their discovery of graphene, graphene research has reached an unprecedented research climax, and more and more studies have found that it is in energy storage. The special fields of, electrical devices, catalysis and biomedicine have huge application prospects.

[0003] From the perspective of practical applications, it is undoubtedly a very valuable research direction to transform nano-graphene materials into macrostructure materials. There have been a large number of studies aimed at the research and preparatio...

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