1. Paul Scherrer Institut, 5232 Villigen-PSI, Switzerland
2. Institute of Materials Physics, University of Göttingen, 37077 Göttingen, Germany
3. Department of Materials, Imperial College London, London SW7 2BP, United Kingdom
4. Next-Generation Fuel Cell Research Centre, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
5. Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
6. Department of Chemistry and Applied Biosciences, Laboratory of Inorganic Chemistry, ETH Zürich, Vladimir-Prelog-Weg 1-5/10, 8093 Zürich, Switzerland
7. International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
8. School of Materials and Energy, University of Electronic Science and Technology of China, 2006 Xiyuan Road, Chengdu 611731, Sichuan People’s Republic of China
9. NAST Center & Department of Chemical Science and Technology, University of Rome Tor Vergata, 00133 Rome, Italy