1. School of Material Science and Engineering
2. Kunming University of Science and Technology
3. Kunming 650093
4. P. R. China
5. School of Materials Science and Engineering
6. Computational Centre for Molecular Science
7. Institute of New Energy Material Chemistry
8. Nankai University
9. Tianjin 300350
10. College of Physics and Information Technology
11. Shaanxi Normal University
12. Xian 710119
13. Faculty of Science