1. Department
of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
2. Stanford
Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94035, United States
3. Chemistry
Department, Brookhaven National Laboratory, Upton, New York 11973, United States
4. Beijing
National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
5. Energy
Storage and Distributed Resources Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
6. Department
of Physics, University of California San Diego, La Jolla, California 92093, United States
7. Center for
Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
8. Advanced
Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
9. Center for High Pressure Science & Technology Advanced Research, Shanghai 201203, China
10. Department
of NanoEngineering, University of California San Diego, La Jolla, California 92093, United States