Graphene fiber and method for manufacturing same
AssigneeIucf-Hyu (Industry-University Cooperation Foundation Hanyang University)
InventorsSeon Jeong Kim, Min Kyoon Shin, Shi Hyeong Kim
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Abstract
The present invention relates to a method for manufacturing a graphene fiber and a graphene fiber manufactured thereby, comprising the following steps: a) preparing a dispersion liquid by dispersing graphene with a surfactant in a solvent; b) preparing a composite fiber by mixing the dispersion liquid with a polymer solution, wet spinning and drying same; and c) removing polymers by heat-treating or treating the composite fiber with strong acid. The graphene fiber manufactured by the method has superior electric and mechanical properties, is flexible, and can be utilized as a storage medium for energy, hydrogen, etc. due to porosity from having a wrinkled structure.
Claims17
A method for producing a graphene fiber, comprising
- a) dispersing graphene and a surfactant in a solvent to prepare a dispersion,
- b) incorporating the dispersion into a polymer solution, wet spinning the resulting solution, followed by drying to produce a composite fiber, and
- c) annealing the composite fiber or treating the composite fiber with a strong acid to remove the polymer.
A porous graphene fiber comprising graphene whose wrinkled structure is maintained.
Dependencies are inferred from the claim text.