1. State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Beijing 100084 China
2. Institute of Physical Chemistry and Center for Materials Research Justus‐Liebig‐University Giessen Heinrich‐Buff‐Ring 17 D‐35392 Giessen Germany
3. Center for High Pressure Science and Technology Advanced Research Beijing 100094 China
4. Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 P. R. China
5. Engineering Laboratory for the Next Generation Power and Energy Storage Batteries Graduate School at Shenzhen Tsinghua University Shenzhen 518055 China