| 초록 |
The superb electronic and mechanical property of graphene can be very useful for electrodes and composites. Graphene prepared from CVD is still very expensive to apply them to those applications. Few-layer, flake type graphene exfoliated from oxidized graphite, even if economical, has highly disorganized structures far from its original sp2 hybridized carbon network. Here we propose a new and simple route to produce few-layer, flake type graphene with minimized oxidation (＜ 2%) by the intercalation of potassium from alkali salts to raw graphite. Analyses of Raman spectroscopy, TEM, AFM, and XPS prove the successful intercalation of graphite without oxidation and show the graphene flakes generated from this method. Further research to increase average flakes sizes and the yield of few-layer graphene will be discussed with some primary results of applications to electrodes and composites. References 1. Kwon, J.; Lee, S.; Park, K.; Seo, D.; Kong, B.; Kang, K.; Jeon, S., Smal 2011, (accepted). 2. Park, K.; Kwon, J.; Jeon, S., (in prepartion) |
