1. Qingdao Industrial Energy Storage Research Institute Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 P. R. China
2. School of Chemical Engineering University of Chinese Academy of Sciences Beijing 100190 P. R. China
3. Société Civile Synchrotron SOLEIL L'Orme des Merisiers Saint-Aubin, BP 48 91192 GIF-sur-Yvette CEDEX France
4. College of Materials Science and Engineering Qingdao University of Science and Technology Qingdao 266042 P. R. China
5. Shandong Energy Institute Qingdao 266101 P. R. China
6. School of Future Technology University of Chinese Academy of Sciences Beijing 100190 P. R. China
7. College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao 266042 P. R. China