LIU Feng and WANG Chao of the CAS Institute of Mechanics propose a theoretical framework to make use of electrical conductivity of 3D graphene foams. They combined a model of conductance between graphene sheets with a second model of the network structure of 3D graphene foams as studied by molecular dynamics simulation, and extracted geometric features such as average contact areas and contact densities. They found that as the number of layers of graphene sheets increases, the conductivity first increases and then decreases, an observation which now will be exploited experimentally.

CAS news release, July 30, 2018