1. Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes; National Laboratory of Mineral Materials. School of Materials Sciences and Technology; China University of Geosciences; Beijing 100083 China
2. Key Laboratory for Renewable Energy; Beijing Key Laboratory for New Energy Materials and Devices; Beijing National Laboratory for Condensed Matter Physics; Institute of Physics; Chinese Academy of Sciences; Beijing 100190 China