1. MIIT Key Laboratory of Critical Materials Technology for New Energy, Conversion and Storage, School of Chemistry and Chemical EngineeringHarbin Institute of Technology Harbin 150001 P.R. China
2. School of PhysicsUniversity of Electronic Science & Technology of China Chengdu Sichuan Province 610054 P.R. China
3. Key Laboratory of Micro-systems and Micro-structures Manufacturing of, Ministry of EducationHarbin Institute of Technology Harbin 150001 P.R. China
4. State Key Laboratory of Urban Water Resource and EnvironmentHarbin Institute of Technology Harbin 150001 P.R. China