Acta Phys. -Chim. Sin. ›› 2012, Vol. 28 ›› Issue (10): 2465-2470.doi: 10.3866/PKU.WHXB201209103

• PHYSICAL CHEMISTRY OF MATERIALS • Previous Articles     Next Articles

Solution-Processable, Highly Conductive, Permanently Rippled Graphene Sheets

FAN Cheng-Wei, ZHANG Xin, CHEN Sheng, WANG Hai-Fang, CAO Ao-Neng   

  1. Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai 200444, P. R. China
  • Received:2012-07-23 Revised:2012-09-10 Published:2012-09-26
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (21073117), National Key Basic Research Program (973) (2009CB930200, 2011CB933402), and Shanghai Leading Academic Disciplines, China (S30109).

Abstract:

The single atom thick sp2 carbon structure of graphene gives rise to its unique properties and potential applications. However, one serious obstacle for its application is that graphene is prone to aggregate in suspension and gradually stack into graphite. Here, we report a novel approach to solve this problem. The basic idea is to introduce sp2 carbon nano-islands on the graphene sheets that act as permanent ripples to prevent the stacking and graphitization of graphene and make it easy to re-suspend. Unlike most functionalization methods, this approach avoids the introduction of heteroatoms. Thus, it does not deteriorate the structure and change the properties of graphene. The carbon-rippled graphene has a remarkable electronic conductivity of ~65000 S·m-1, and can be readily suspended in solvent.

Key words: Graphene, Ripple, Carbon nanocage, Expandable graphite, Conductivity, Solution stability

MSC2000: 

  • O641