1. Hefei National Laboratory for Physical Sciences at Microscale CAS Key Laboratory of Materials for Energy Conversion Department of Materials Science and Engineering Synergetic Innovation Center of Quantum Information & Quantum Physics University of Science and Technology of China Hefei 230026 P. R. China
2. School of Environment and Civil Engineering Dongguan University of Technology Dongguan Guangdong 523808 P. R. China
3. Shanghai Synchrotron Radiation Facility (SSRF) Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201204 P. R. China
4. Institute of Solid State Physics Hefei Institute of Physical Science Chinese Academy of Sciences Hefei 230031 P. R. China
5. Department of Chemistry City University of Hong Kong Kowloon Hong Kong 999077 P. R. China