1. Joint Center for Artificial Photosynthesis, California Institute of Technology, Pasadena, California 91125, United States
2. State Key Laboratory of Mechanical Transmission,
College of Physics, Chongqing University, Chongqing 400044, People’s Republic of China
3. Stanford
Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
4. Department of
Materials Science and Engineering, University of California, Berkeley, California 94720, United States