1. School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
2. GTT-Technologies, Kaiserstraße 103, Herzogenrath 52134, Germany
3. Institute of Energy and Climate Research, Microstructure and Properties of Materials (IEK-2), Forschungszentrum Jülich GmbH, Leo-Brandt-Straße 1, Jülich 52425, Germany