1. Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research (IEK), Materials Synthesis and Processing (IEK-1), Wilhelm-Johnen-Straße, Juelich 52428, Germany
2. RWTH Aachen University, Institute of Mineral Engineering (GHI), Aachen, Germany
3. Technical University of Munich, Chair of Energy Systems, Garching 85748, Germany
4. JARA-Energy, Juelich, Germany