1. Institute of Energy and Climate Research IEK-3: Electrochemical Process Engineering, Forschungszentrum Jülich, 52425 Jülich, Germany
2. The Electrochemical Energy, Catalysis and Materials Group, Department of Chemistry, Technical University Berlin, 10623 Berlin, Germany
3. Ernst-Ruska Centre for Microscopy and Spectroscopy with Electrons, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
4. Division of Energy and Environment, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China
5. Chair for Fuel Cells, RWTH Aachen University, 52072 Aachen, Germany