1. State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals
2. School of Material Science and Engineering
3. Lanzhou University of Technology
4. Lanzhou 730050
5. P. R. China
6. Laboratory of Clean Energy Chemistry and Materials
7. State Key Laboratory of Solid Lubrication
8. Lanzhou Institute of Chemical Physics
9. Chinese of Academy of Sciences
10. Lanzhou 730000