Shuo Zhang1,2,7, Bei Ma3,7, Xingyu Zhou1,2,7, Qilin Hua1,2*, Jian Gong4, Ting Liu1,2, Xiao Cui1,2, Jiyuan Zhu1,2, Wenbin Guo1,2, Liang Jing1,2, Weiguo Hu1,2,5* & Zhong Lin Wang1,2,5,6*
1 CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China.
2 School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China.
3 Graduate School of Electrical and Electronic Engineering, Chiba University, Chiba 263-8522, Japan.
4 Estuarine and Coastal Environment Research Center, Chinese Research Academy of Environmental Sciences, Beijing 100012, P. R. China.
5 Center on Nanoenergy Research, School of Physical Science and Technology, Guangxi University, Nanning 530004, China.
6 School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245, USA.
7 These authors contributed equally: Shuo Zhang, Bei Ma, Xingyu Zhou.