▎ 摘　　要

In this work, enlightened by origami theory, the folding of graphene on the mechanical properties of graphene aerogels (GA) was investigated. Graphene oxide (GO) sheets were folded by the coordination interaction and electrostatic interaction. Highly porous and continuous three-dimensional (3D) architectures of folded graphene aerogels (fGA) were fabricated with folded graphene sheets. Characterizations of the GO, GA, folded GO (fGO), and fGA were performed by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), mechanical properties testing, Raman and so on. The results indicated that the fGA got circular pores, the diameter of which was smaller than that of GA. fGA had good mechanical properties. Even the cycle times were up to 50, the mechanical strength still reserved well. Raman mapping was carried to probe the load transfer of aerogels. The results suggested fGA could transfer load more effectively than that of GA. Finite element model suggested that the structure of folded graphene is more stable than that of the graphene. (C) 2018 Published by Elsevier B.V.