1. Advanced Li-ion Battery Engineering Laboratory, CAS Engineering Laboratory for Graphene and Key Laboratory of Graphene Technologies and Applications of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, P. R. China
2. College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences (UCAS), Beijing 100049, P. R. China
3. State Key Laboratory of Metastable Materials Science and Technology, Hebei Key Laboratory of Applied Chemistry, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
4. National Graphene Innovation Center, Ningbo 315205, P. R. China