1. Institutes of Physical Science and Information Technology Anhui Graphene Materials Research Center Anhui University Hefei Anhui 230601 P. R. China
2. Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province College of Environment Zhejiang University of Technology Hangzhou 310014 P. R. China
3. Department of Chemistry Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) University of Science and Technology of China Hefei Anhui 230026 P. R. China