A review on manifold synthetic and reprocessing methods of 3D porous graphene-based architecture for Li-ion anode

At present, active materials have been introduced with the drawback of low specific capacity of commercial graphite electrodes and to meet the increasing demands for lithium-ion batteries with high energy density. However, volume expansion of active materials and poor electrical conductivity of them are deadly problems in charge transportation and cycle stability. Confronting with these problems, three-dimensional porous graphene sheets combining with active substances show great promise, which have much more new physiochemical properties and present excellent electrochemical performances in anodes, getting a great deal of attention. Therefore, in this review, we summarize manifold synthesis methods, such as hydrothermal/solvothermal, chemical vapor deposition and self-assembly methods of three-dimensional porous graphene-based composite for lithium ion anodes, aiming to illustrate synthesis methods may affect the structure of materials and anode performances. And we also present two main methods in reprocessing three-dimensional porous graphene materials to improve Li-ion storage. We hope that this article which reviews the synthesis and reprocessing methods of three-dimensional porous graphene-based composite anode can give inspirations for readers.