Facile fabrication of graphene composite microwires via drying-induced size reduction of hydrogel filaments | Zendy

Hyung-Jun Koo | Zendy; Sung-Kon Kim | Zendy; Paul V. Braun | Zendy

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Facile fabrication of graphene composite microwires via drying-induced size reduction of hydrogel filaments

Author(s) -

Hyung-Jun Koo,

Sung-Kon Kim,

Paul V. Braun

Publication year - 2014

Publication title -

rsc advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.746

H-Index - 148

ISSN - 2046-2069

DOI - 10.1039/c4ra01154f

Subject(s) - graphene , fabrication , composite number , materials science , reduction (mathematics) , nanotechnology , composite material , chemical engineering , medicine , alternative medicine , pathology , geometry , mathematics , engineering

Graphene based electrical conductors are under consideration for numerous applications in energy storage, energy conversion devices, electronics and sensors. Here, we report a facile and versatile method for fabrication of graphene based composite microwires ranging from ∼20 to 250 μm in diameter via size reduction during dehydration of extruded larger diameter graphene oxide-loaded agarose hydrogel fibers. The graphene oxide is effectively reduced to graphene by chemical and thermal treatment. After dehydration and reduction, the resulting graphene composite microwires exhibit high electrical conductivities of up to 1.8 S m−1.

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