▎ 摘　　要

The present review focuses on the preparations, properties and applications of graphene materials in a few selected functional devices. We have summarized the mechanical exfoliation method, liquid phase stripping, oxidation-reduction method and chemical vapor deposition for the growth of graphene. Several factors such as the substrate, the temperature and reducing agents that influence the properties of graphene are also discussed. In addition, selected applications of graphene, including graphene bulbs, graphene superconductors, graphene chips, rapid heating of graphene, drug carriers, hydrogen storage materials, and graphene battery are surveyed.