Graphdiyne as a new allotrope of carbon material was constructed by benzene rings and butadiyne. The large 2D conjugated structure endows graphdiyne with excellent conductivity and flexibility. More importantly, the atomic arrangement of graphdiyne with a unique porous framework structure is very different from the compact structure of other carbon materials, such as graphene and carbon nanotubes. This is of great benefit to the diffusion and transfer of ions and gases. In the meantime, the high specific surface area originating from the pore structure can also provide abundant active sites for the storage of electrons or ions. The high charge density around the acetylenic bond in graphdiyne supplies the adsorption capacity of ions and gases as well as the catalytic ability to some degree. In addition, the mild synthetic route endows graphdiyne with function tunability and good film-forming ability. Benefiting from all these extraordinary properties, graphdiyne would have a bright future for applications in electrochemical energy storage.