Graphene composites have significant advantages in improving electrochemical properties and applications. Graphene is an ideal material for improving electrochemical performance due to its two-dimensional structure, high electrical conductivity and large specific surface area. However, pure graphene still has some defects in electrochemical performance, such as agglomeration problems, interfacial problems, stability problems, and high production cost, etc. Therefore, the composite of graphene with organic, metallic and non-metallic materials can significantly improve the electrochemical performance and the thermal management of composites. The high strength properties of graphene also enhance the mechanical properties of composites and improve the tensile and compressive strength of materials. Compared with traditional materials, the low density of graphene can help reduce the overall weight of the composite material and improve its corrosion resistance. This paper compares these three composites in terms of improved electrochemical properties and explores the improvement of electrical properties to some extent by compositing graphene with these three materials. Finally, some applications of such composites such as batteries, flexible electronics and capacitors are also analyzed.
