1. State Key Laboratory of Silicon MaterialsKey Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province & School of Materials Science and EngineeringZhejiang University Hangzhou 310027 P. R. China
2. Shanghai Institute of Space Power‐Sources Shanghai 201100 P. R. China
3. School of Materials Science and EngineeringKey Laboratory of Advanced Energy Storage Materials of Guangdong ProvinceSouth China University of Technology Guangzhou 510640 P. R. China
4. School of Advanced MaterialsPeking UniversityShenzhen Graduate School Shenzhen 518055 P. R. China