Hierarchical composite structures based on graphene foam or graphene-like foam

The present invention relates to a hierarchical composite structure comprising an open cell graphene foam or graphene-like foam, wherein the graphene foam or graphene-like foam is coated with a conductive nanoporous spongy structure and wherein at least 10% v/v of the hollow of the pores of the graphene foam or graphene-like foam is filled with the conductive nanoporous spongy structure. The invention also relates to a process for preparing a hierarchical composite structure wherein a conductive nanoporous spongy structure is electrodeposited so as to coat the open-cell graphene foam or graphene-like foam and to partially fill the hollow of the pores of the graphene foam or graphene-like foam. 本发明涉及包括开孔石墨烯泡沫或类石墨烯泡沫的分层复合材料结构，其中石墨烯泡沫或类石墨烯泡沫被涂布有导电纳米多孔海绵结构，并且其中石墨烯泡沫或类石墨烯泡沫的至少10％v/v的孔的中空被填充有导电纳米多孔海绵结构。本发明还涉及用于制备分层复合材料结构的方法，其中导电纳米多孔海绵结构被电沉积以便涂布开孔石墨烯泡沫或类石墨烯泡沫和部分地填充石墨烯泡沫或类石墨烯泡沫的孔的中空。