1. Beijing Key Laboratory for Theory and Technology of Advanced Battery MaterialsDepartment of Materials Science and EngineeringCollege of EngineeringPeking University Beijing 100871 P. R. China
2. Department of Energy and Resource EngineeringCollege of EngineeringPeking University Beijing 100871 P. R. China
3. Research Institute of Electrochemical EnergyNational Institute of Advanced Industrial Science and Technology (AIST) Ikeda Osaka 563‐8577 Japan
4. AIST‐Kyoto University Chemical Energy Materials Open Innovation Laboratory (ChEM‐OIL) Yoshida, Sakyo‐ku Kyoto 606‐8501 Japan