Microstructures of Graphene applied as Electrode Materials in Lithium-ion Batteries

With the dramatic increase in the consumption of electric energy, lithium-ion batteries (LIBs) become one of the most important devices for energy storage. Among various types of electrode materials in LIBs, graphene is one of the potential alternations due to the outstanding conductivity and ability of ions storage. But the limitation of capacity and stability brings challenges when applying graphene in LIBs directly. Recently, the microstructure of graphene is focused more to improve the performances of LIBs furtherly. Several kinds of microstructure in graphene have been designed including three-dimensional (3D) microstructure, core-shell microstructure, sandwich microstructure, and porous microstructure. This review aims to summarize the designs of these microstructures, conclude the effect of each microstructure and provide suggestions for future development.