1. Shenyang National Laboratory for Materials Science
2. Institute of Metal Research
3. Chinese Academy of Sciences
4. Shenyang 110016
5. China
6. Max Plank Institute for Chemical Energy Conversion
7. Mülheim an der Ruhr 101365
8. Germany
9. Research Center for Analysis and Measurement
10. Kunming University of Science and Technology
11. Kunming 650093