能源问题是人类社会未来面临的重大挑战,从实现电能与化学能相互转换的角度而言,作为一种二维结构材料,石墨烯不仅可以构筑电子导电网络,也可实现对反应活性物种状态的设计和调控,进而改变反应的热力学和动力学,在电化学储能系统中具有十分重要的意义.本文主要介绍了石墨烯的制备方法及其在构筑电子导电网络以实现对反应活性物种状态的设计和调控方面的作用和功能,分别就其在构筑硫复合材料、氧化物复合材料、导电聚合物复合材料等方面进行了讨论,并结合相应的电化学储能系统评价这些复合材料的性能.
The energy crisis is a major challenge for the human society in the future. As a material with two-dimensional structure, graphene can not only build electronic conductive network, but also realize the design and control of the status of reactive species, and then change the thermodynamics and kinetics of reactions. Thus,graphene is of great significance in electrochemical energy storage systems in terms of realizing the transformation from chemical energy to electric energy. This paper mainly reviews the preparation methods of graphene and its functions in constructing electronic conductive network to realize the design and regulation of the status of reactive species. We discuss the construction of sulfur composite materials, oxide composite materials, and conductive polymer composites, and evaluate the performances of these composite materials in corresponding electrochemical energy storage systems.