1. Key Laboratory for Renewable Energy; Beijing Key Laboratory for New Energy Materials and Devices; Beijing National Laboratory for Condensed Matter Physics; Institute of Physics; Chinese Academy of Sciences; School of Physical Sciences; University of Chinese Academy of Sciences; Beijing 100190 China
2. Laboratory for Advanced Materials & Electron Microscopy; Beijing National Laboratory for Condensed Matter Physics; Institute of Physics; Chinese Academy of Sciences; Beijing 100190 China
3. National Synchrotron Light Source II; Brookhaven National Laboratory; Upton NY 11973 USA
4. Department of Chemistry; Brookhaven National Laboratory; Upton NY 11973 USA