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Enhanced electrical conductivity of doped graphene fiber via vacuum deposition

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2021, 31(4), pp.613-618
  • DOI : 10.1007/s42823-020-00193-3
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : August 6, 2020
  • Accepted : September 19, 2020
  • Published : August 1, 2021

Park Beum Jin 1 PARK, HOSEOK 1

1성균관대학교

Accredited

ABSTRACT

Graphene fber is considered as a potential material for wearable applications owing to its lightness, fexibility, and high electrical conductivity. After the graphene oxide (GO) solution in the liquid crystal state is assembled into GO fber through wet spinning, the reduced graphene oxide (rGO) fber is obtained through a reduction process. In order to further improve the electrical conductivity, herein, we report N, P, and S doped rGO fbers through a facile vacuum difusion process. The precursors of heteroatoms such as melamine, red phosphorus, and sulfur powders were used through a vacuum difusion process. The resulting N, P, and S doped rGO fbers with atomic% of 6.52, 4.43 and 2.06% achieved the higher electrical conductivities compared to that of rGO fber while preserving the fbrious morphology. In particular, N doped rGO fber achieved the highest conductivity of 1.11 ×104 S m−1, which is 2.44 times greater than that of pristine rGO fber. The heteroatom doping of rGO fber through a vacuum difusion process is facile to improve the electrical conductivity while maintaining the original structure.

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