1. Centre for Material Science and Nanotechnology, Department of Chemistry, University of Oslo, P.O. Box 1033, Blindern, Oslo 0371, Norway
2. Department of Battery Technology, Institute for Energy Technology (IFE), Instituttveien 18, Kjeller 2027, Norway
3. European Synchrotron Radiation Facility (ESRF), 71 avenue des Martyrs, CS40220, Grenoble 38043, Cedex 9, France