1. Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education)
2. College of Physics
3. Jilin University
4. Changchun 130012, China
5. Laboratory for Surface Science and Technology and
6. Department of Chemistry
7. University of Maine
8. Orono, USA
9. College of Chemistry
10. State Key Laboratory on Integrated Optoelectronics
11. College of Electronic Science and Engineering
12. Changchun, China