1. Hefei National Laboratory for Physical Sciences at the Microscale CAS Key Laboratory of Materials for Energy Conversion Department of Materials Science and Engineering University of Science and Technology of China Hefei Anhui 230026 P. R. China
2. Guizhou Provincial Key Laboratory of Computational Nano-Material Science Guizhou Education University Guiyang Guizhou 550018 P. R. China
3. Research Institute of Petroleum Exploration & Development (RIPED) PetroChina Beijing 100083 P. R. China
4. Hefei National Laboratory for Physical Sciences at the Microscale CAS Center for Excellence in Nanoscience University of Science and Technology of China Hefei Anhui 230026 P. R. China
5. Institute of Energy Hefei Comprehensive National Science Center Hefei Anhui 230031 P. R. China