1. Department of Materials Science and EngineeringPeking University Beijing 100871 China
2. Institute of PhysicsChinese Academy of Sciences Beijing 100190 China
3. Key Laboratory for Photonic and Electric Bandgap MaterialsMinistry of EducationHarbin Normal University Harbin 150025 China
4. The Beijing Innovation Center for Engineering Science and Advanced TechnologyPeking University Beijing 100871 China
5. Key Laboratory of Theory and Technology of Advanced Batteries MaterialsCollege of EngineeringPeking University Beijing 100871 China