关键词：电池；电化学设备；石墨烯；超级电容器
摘 要：The catenating property of carbon makes it unique to forming various architectures (e.g. diamond, fullerenes, carbon nanotubes, graphene, etc.) at nanolevel. Graphene, a 2D material, has received increasing attention since the first historical isolation of single-layer graphene from the crystalline graphite in 2004 owing to its unique physicochemical properties and ease of functionalization. Suitable methods have been discovered to synthesize graphene and its composites with metal/oxide nanoparticles for use in electrochemical devices to improve their efficiencies. This chapter with a brief description of methods of synthesis of graphene and its structural characterization presents a detailed review of the work carried out on application of graphene to improve the performance of electrochemical devices, namely fuel cells, supercapacitors and batteries.