1. State Key Laboratory for Physical Chemistry of Solid SurfacesCollaborative Innovation Center of Chemistry for Energy Materials andNational & Local Joint Engineering Research Center for, Preparation Technology of NanomaterialsCollege of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 P.R. China
2. Departments of Physics and ChemistryNanoscience CenterUniversity of Jyväskylä 40014 Jyväskylä Finland