1. Institute of Fuel Cells, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
2. Joint Center for Artificial Photosynthesis, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
3. Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720, United States
4. Materials Simulation Center and Joint Center for Artificial Photosynthesis, California Institute of Technology, Pasadena, California 91125, United States
5. Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States