1. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
2. Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
3. State Key Laboratory of Fluorinated Functional Membrane Materials, Shandong Dongyue Polymer Materials Co, Ltd., Zibo 256401, Shandong, China