1. State Key Laboratory of Organic-Inorganic Composites College of Chemical EngineeringBeijing University of Chemical Technology Beijing 100029 P. R. China
2. Research Center of the Ministry of Education for High Gravity Engineering & Technology College of Chemical EngineeringBeijing University of Chemical Technology Beijing 100029 P. R. China
3. General Research Institute of Nonferrous Metals Beijing 100088 P. R. China
4. China Automotive Battery Research Institute Co., Ltd Beijing 101407 P. R. China