1. Center
for Nanochemistry (CNC), Beijing Science and Engineering Center for
Nanocarbons, Beijing National Laboratory for Molecular Sciences, College
of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
2. Centre
of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, Zabrze 41-819, Poland
3. IFW Dresden, 20 Helmholtz Strasse, Dresden 01069, Germany
4. School
of Energy, Soochow University, Suzhou 215006, P. R. China
5. BTR New Energy Materials Inc., Shenzhen 518106, P. R. China
6. Department
of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, P. R. China