1. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
2. Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, No. 300, Changjiang Road, Yantai, Shandong 264006, China
3. Qingdao Key Laboratory of Lubrication Technology for Advanced Equipment, Qingdao Center of Resource Chemistry & New Materials, Qingdao 266000, China