Synthesis of Graphene Sheets with High Electrical Conductivity and Good Thermal Stability by Hydrogen Arc Discharge Exfoliation
- 3 February 2009
- journal article
- research article
- Published by American Chemical Society (ACS) in ACS Nano
- Vol. 3 (2), 411-417
- https://doi.org/10.1021/nn900020u
Abstract
We developed a hydrogen arc discharge exfoliation method for the synthesis of graphene sheets (GSs) with excellent electrical conductivity and good thermal stability from graphite oxide (GO), in combination with solution-phase dispersion and centrifugation techniques. It was found that efficient exfoliation and considerable deoxygenation of GO, and defect elimination and healing of exfoliated graphite can be simultaneously achieved during the hydrogen arc discharge exfoliation process. The GSs obtained by hydrogen arc discharge exfoliation exhibit a high electrical conductivity of ∼2 × 103 S/cm and high thermal stability with oxidization resistance temperature of 601 °C, which are much better than those prepared by argon arc discharge exfoliation (∼2 × 102 S/cm, 525 °C) and by conventional thermal exfoliation (∼80 S/cm, 507 °C) with the same starting GO. These results demonstrate that this hydrogen arc discharge exfoliation method is a good approach for the preparation of GSs with a good quality.Keywords
This publication has 48 references indexed in Scilit:
- Large Reversible Li Storage of Graphene Nanosheet Families for Use in Rechargeable Lithium Ion BatteriesNano Letters, 2008
- Functionalized graphene sheets for polymer nanocompositesNature Nanotechnology, 2008
- Large-area ultrathin films of reduced graphene oxide as a transparent and flexible electronic materialNature Nanotechnology, 2008
- Graphene Physics in GraphiteAdvanced Materials, 2007
- Transparent, Conductive Graphene Electrodes for Dye-Sensitized Solar CellsNano Letters, 2007
- The rise of grapheneNature Materials, 2007
- Graphene-based composite materialsNature, 2006
- Two-dimensional gas of massless Dirac fermions in grapheneNature, 2005
- Experimental observation of the quantum Hall effect and Berry's phase in grapheneNature, 2005
- Electric Field Effect in Atomically Thin Carbon FilmsScience, 2004