▎ 摘　　要

Graphene and its composites are expected to be the promising candidate for electrode materials of lithium-ion battery. However, the fabrication of graphene based materials is a challenge and the related growth mechanism has not been clarified up to date. Here, the porous SnO2 nanospheres/graphene composite is prepared by the in situ hydrothermal method. The article focuses on research and discussed the influence of preparation conditions, such as GO, HCl, temperature and time ect., on the morphology of the composites. This work reveals the growth mechanism of the porous SnO2 nanospheres/graphene composite, which may contribute to the correct understanding of graphene-based materials for designing or fabricating the electrode materials of lithium-ion battery.