1. Qingdao Industrial Energy Storage Research InstituteQingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of Sciences Qingdao 266101 P. R. China
2. School of Materials Science and EngineeringShanghai University Shanghai 200444 P. R. China
3. College of Chemistry and Molecular EngineeringQingdao University of Science and Technology Qingdao 266042 Shandong P. R. China
4. Société Civile Synchrotron SOLEILL'Orme des Merisiers Saint‐Aubin–BP 48 91192 Gif‐sur‐Yvette CEDEX France
5. Beijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of Sciences Beijing 100190 P. R. China
6. School of Computer Engineering and ScienceShanghai University Shanghai 200444 P. R. China
7. Australian Nuclear Science and Technology Organisation Locked Bag 2001 Kirrawee DC NSW 2232 Australia
8. School of ChemistryThe University of Sydney Sydney 2006 Australia
9. Key Laboratory for Renewable EnergyBeijing Key Laboratory for New Energy Materials and DevicesBeijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of Sciences Beijing 100190 P. R. China