We successfully demonstrate a new and green method to continuously synthesize high quality graphene via a liquid exfoliation process and apply it to Li ion batteries, heat dissipation, EMI shielding and anticorrosion applications.The critical problem for the commercialization of graphene is the cost issue. Even for hummers’ method or CVD process, both of these approaches suffer from high cost. Our proposed green process is a cost-effective and green process to obtain high quality graphene for Li ion battery applications.Owing to the excellent properties, graphene nanosheets have been widely reported for many applications, such as composite materials, energy materials, optical electronic materials. Here we propose a green process is cost-effective and green process to obtain high quality graphene. Our graphene could be applied on Li ion batteries, heat dissipation, EMI shielding, anticorrosion and as fillers for composite materials.