1. Max Planck Institute for Chemical Energy Conversion, Mülheim 45470 (Germany)
2. Fritz‐Haber‐Institut der Max‐Planck‐Gesellschaft, Berlin 14195 (Germany)
3. Helmholtz‐Center Berlin for Materials and Energy, BESSY II, Berlin 12489 (Germany)
4. Engineering Department, University of Cambridge, Cambridge CB3 0FA (UK)
5. Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley 94720 (USA)
6. Diamond Light Source, Oxfordshire OX11 0QX (UK)
7. Department of Physics, Tamkang University, Tamsui 251 (Taiwan)