A kind of graphene porous fiber and continuous preparation method thereof

Abstract

The invention provides a graphene porous fiber and a continuous preparation method thereof. The continuous preparation method is characterized by including steps of continuously pulling a copper wire and immersing the copper wire in the graphene oxide electrolyte; then performing electrochemistry plating of graphene on the surface of the copper wire through a tri-electrode system; then continuously collecting the copper wire of which surface is coated with the graphene and rolling up; then immersing the copper wire to the ferric chloride solution to dissolve copper wire; at last, applying the surface tension force or external force to make the graphene contract, thus acquiring the graphene porous fiber. The graphene porous fiber prepared by the invention has big adjustment in terms of diameter, porosity and specific surface, and lays a solid foundation for the application of graphene porous fiber in terms of absorption, energy source, sensing and others.

Description

technical field [0001] The invention relates to a graphene porous fiber and a continuous preparation method thereof, belonging to the field of fiber technology. Background technique [0002] Fiber has been deeply applied to a wide range of fields of national defense and national economy, such as aerospace, missile armor, medical environmental protection, home decoration and wearables. The advantages of traditional natural fibers and chemical fibers, such as cotton fiber, hemp fiber, polyester fiber, nylon fiber, vinylon fiber and polypropylene fiber, mainly lie in mechanical properties and wearing properties. However, with the rapid development of science and technology, especially the rapid update of electronic information technology, fibers need to have higher performance and more functions, such as higher strength, excellent electromagnetic properties, sensitive response, good chemical stability sex etc. Therefore, new fibers need to be developed. [0003] Graphene is ...

AI Technical Summary

Problems solved by technology

This method is difficult to produce continuously and requires high temperature

[0004] Therefore, looking at the existing patents and literature reports, the preparation methods of graphene porous fibers are very limited, and none of the existing methods can achieve continuous preparation at room temperature without reduction.

In addition, the adjustment range of diameter, porosity and specific surface area of ​​graphene porous fibers prepared by existing methods is small

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