1. Collaborative Innovation Center of Chemistry for Energy Materials (iChEM)State Key Laboratory of Physical Chemistry of Solid SurfacesThe MOE Key Laboratory of Spectrochemical Analysis and InstrumentationCollege of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
2. Department of Materials Chemistry, School of Chemical and Materials EngineeringQuanzhou Normal University Quanzhou 362000 China
3. Present address: Institute of PhysicsCarl von Ossietzky University Oldenburg 26129 Oldenburg Germany