摘要： Graphene has attracted a great number of attentions due to the excellent physical and chemical properties. For the convenience of investigations and applications, it is crucial to produce the grapheme with high-quality and high-yield by an easy-obtained method. In this research, a promising method is demonstrated to produce a high-concentration few-layer graphene (FLG) dispersion by direct micro?uidization in water/surfactant systems. The effects of surfactant selection, chamber pressure and micro?uidization cycles on the graphitic material exfoliation ef?ciency are systematically studied. The FLG concentration and the quality of the as-prepared FLG were determined by a series of characterizations. The graphene dispersions, with an average lateral size of 0.6 (cid:2)m and a few-layer structure, were stabilized by surfactants at a high concentration of up to 1.7 mg/mL and = 0.07–0.56, C/O ～ 19(cid:3)36) within a processing time of a few hours. This method should facilitate the mass production of high-quality graphene by liquid-phase exfoliation and promote the industrial application of graphene.