1. State Key Laboratory of Chemical Resource Engineering; Beijing University of Chemical Technology; Beijing 100029 P. R. China
2. School of Materials Science and Technology; Beijing University of Chemical Technology; Beijing 100029 P. R. China
3. No. 45 Research Institute, China Electronics Technology Group Corporation; Hebei Province 065201 P. R. China
4. Key Laboratory of Carbon Fiber and Functional Polymer of Education Ministry; Beijing University of Chemical Technology; Beijing 100029 P. R. China
5. Beijing Key Laboratory of Electrochemical Process and Technology for Materials; Beijing University of Chemical Technology; Beijing 100029 P. R. China