Hydrogen storage in solids is becoming an ever more important technology. We theoretically design a completely new material for hydrogen storage, which is quite different from the present materials. This kind of material, base on monolayer graphene, is thought to be extremely flexible. First-principles calculations and kinetic theory of gases are employed to evaluate this material. The results demonstrate that it is promising for hydrogen storage. More than anything, the hydrogen storage capacity of this material is about 4 mmol g(-1) at 300 K and 1 atm. (C) 2018 Elsevier B.V. All rights reserved.