1. College of Materials Science and Engineering, Key Laboratory of Automobile Materials, Ministry of Education, Jilin University, Changchun 130012, China
2. Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
3. College of Physics, Jilin University, Changchun 130012, China
4. Center of Characterization and Analysis, Jilin Institute of Chemical Technology, Jilin 132022, China