1. State Key Laboratory of Chemical Resource Engineering
2. Beijing University of Chemical Technology
3. 100029 Beijing
4. China
5. State Key Laboratory of Solidification Processing
6. Center for Nano Energy Materials
7. School of Materials Science and Engineering
8. Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU)
9. Xi'an
10. Faculty of Production Engineering
11. University of Bremen
12. D-28359 Bremen
13. Germany