The present project will address: (i) new lightweight nanosized and nanostructured materials for hydrogen storage and (ii) a better understanding of processes for hydrogen uptake and release and the understanding of how catalysts improve kinetics and reve rsibility. The project will combine advanced modelling (DFT first principles full-potential electron structure calculations), synthesis of new compounds by different methods (wet chemistry methods and solid-state synthesis) and advanced characterization ( X-ray and neutron diffraction, TEM, SEM, XPS, kinetics studies, PCT and DSC). All theoretical and experimental tools are available in the 4 institutions participating in the project. The proposal accommodates work for 2 post-doctoral fellows and 1 doctora l fellow. The project will build on the national collaboration established by the National coordinated project on "Materials for hydrogen technology" and the subproject "Materials for hydrogen storage" funded by the NANOMAT-program. In addition there will be strong link to other national and international projects. Some of these projects also involve collaboration between the partners taking part in this proposal.