1. Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research─Fundamental Electrochemistry (IEK−9), 52428 Jülich, Germany
2. Dyson School of Design Engineering, Imperial College London, SW7 2AZ London, United Kingdom
3. Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich GmbH, 52428 Jülich, Germany
4. Central Facility for Electron Microscopy (GFE), RWTH Aachen University, 52074 Aachen, Germany
5. Institute of Physical Chemistry, RWTH Aachen University, D-52074 Aachen, Germany