1. National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, Anhui, P. R. China
2. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
3. Energy and Power Engineering Institute, Henan University of Science and Technology, Luoyang 471003, Henan, P. R. China
4. Department of Chemistry, Chemical Theory Center, and Minnesota Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
5. State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, Anhui, P. R. China