1. School of Materials Science and Engineering
2. Dalian University of Technology
3. Dalian 116024
4. P. R. China
5. State Key Laboratory of Molecular Reaction Dynamics
6. Dalian Institute of Chemical Physics
7. Chinese Academy of Science
8. Dalian 116023
9. Bremen Center for Computational Materials Science
10. University of Bremen
11. D-28359 Bremen
12. Germany