1. Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, IEK-1 Materials Synthesis and Processing (IEK-1), 52425 Jülich, Germany
2. Faculty of Science and Technology, Inorganic Membranes, University of Twente, 7500 AE Enschede, The Netherlands
3. Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, IEK-12, Helmholtz-Institute Münster: Ionics in Energy Storage, Corrensstr. 46, 48149 Münster, Germany
4. Central Facility for Electron Microscopy GFE, RWTH Aachen University, 52074 Aachen, Germany
5. Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons ER-C, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany