1. Centre for Materials Science and Nanotechnology (SMN), Department of Chemistry, University of Oslo, Sem Sælands vei 26, Oslo N-0371, Norway
2. Department for Hydrogen Technology, Institute for Energy Technology, Kjeller NO-2027, Norway
3. Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institute, Forschungsstrasse 111, Villigen PSI 5232, Switzerland