1. CAS Key Laboratory of Molecular Nanostructure and Nanotechnology and Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences (CAS) Beijing 100190 P. R. China
2. University of Chinese Academy of Sciences Beijing 100049 P. R. China
3. School of Metallurgy and Environment Central South University Changsha 410083 P. R. China
4. Hunan ShanShanEnergy Technology Co., Ltd Hunan 410006 P. R. China
5. BASF Shanshan Battery Materials Co., Ltd Ningxia 755000 P. R. China