1. Beijing Key Laboratory of Environmental Science and Engineering School of Material Science & Engineering Beijing Institute of Technology Beijing 100081 P. R. China
2. School of Chemistry and Chemical Engineering Beijing Institute of Technology Beijing 100081 P. R. China
3. Collaborative Innovation Center of Electric Vehicles in Beijing Beijing 100081 P. R. China
4. Advanced Technology Research Institute Beijing Institute of Technology Jinan 250300 P. R. China