1. Key Laboratory of Preparation and Applications of Environmentally Friendly Material of the Ministry of Education & College of Chemistry Jilin Normal University Changchun 130103 P.R. China
2. Department of Chemical and Biomolecular Engineering University of California Los Angeles CA 90095 USA
3. Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies Nanjing University of Aeronautics and Astronautics Nanjing 210016 P.R. China
4. State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P.R. China