Graphene is a very promising material and appears particularly suitable in order to develop efficient hydrogen storage systems, especially if it is ¿decorated¿ with proper metal ions. Recently, we have synthesized gram-scale defective graphene samples via chemical methods and decorated them with Lithium and Nickel atoms. Although a structural characterization is still missing, the investigation of the morphology of the carbon planes, the defects as well as the interaction between decorating metals and the local environment is a fundamental prerequisite to support atomistic modeling and gain a better understanding of the interaction between the hydrogen molecules and graphene-based systems. Hence, it is proposed to investigate the morphology of graphene and metal decorated graphene samples at the nanoscale usingthe NIMROD diffractometer at the ISIS .