石墨烯分散液的制备以及应用前景

Preparation and Application Perspective of Graphene Dispersion

石墨烯因独特的晶体结构和丰富新奇的光电性能而成为研究前沿和热点。高浓度稳定分散的石墨烯分散液有着巨大的应用前景,可广泛应用于能源存储、电子信息、功能材料等多个领域。但石墨烯纳米片不亲水也不亲油,易发生团聚,难以长时间稳定分散在溶液中。本文分析了石墨烯在不同溶剂中的溶解性,综述了当前国内外一些石墨烯分散液的制备方法和开发前景,指出分子修饰法将是石墨烯分散液功能化制备的发展方向,这为石墨烯分散液的功能化应用提供了重要的参考。

Graphene,a monolayer of carbon atoms with a tight packing of honeycomb lattice,has many excellent properties such as thermal,electrical and mechanical properties.However,harnessing the exceptional properties of graphene often requires its dispersion into aqueous or organic media,and dispersion must be achieved at a concentration and stability appropriate to the final application.In fact,the strong interaction between graphene sheets means it disperses poorly in all but a few high boiling organic solvents.This review presents an overview of graphene dispersion applications and a discussion of dispersion strategies in aqueous or organic solvents.It is known that surfactant-molecular modification is the mainly development trend for the preparation of graphene dispersion.In this review,important potential application in the new material field is also discussed.