Li Lin?, Bing Deng?, Jingyu Sun?§, Hailin Peng*?∥, and Zhongfan Liu*?∥
? Center for Nanochemistry, 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
? Soochow Institute for Energy and Materials Innovations (SIEMIS), College of Physics, Optoelectronics and Energy, Soochow University, Suzhou 215006, P. R. China
§ Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Soochow University, Suzhou 215006, P. R. China
∥ Beijing Graphene Institute (BGI), Beijing 100095, P. R. China
