▎ 摘　　要

The single atom thick sp(2) 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 sp(2) 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 similar to 65000 S.m(-1), and can be readily suspended in solvent.