Interdiffusion at electrochemical interfaces between yttria-stabilized zirconia and doped ceria |
| |
| Affiliation: | 1. Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research (IEK), Materials Synthesis and Processing (IEK-1), Wilhelm-Johnen-Straße, 52428 Juelich, Germany;2. RWTH Aachen University, Institute of Mineral Engineering (GHI), Aachen, Germany;3. JARA-Energy, Juelich, Germany;1. Interdisciplinary Graduate School of Engineering Science, Kyushu University, 6–1 Kasuga-koen, Kasuga-shi, Fukuoka 816-8580, Japan;2. Research Center for Structural Materials, National Institute for Materials Science, 1–2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan;3. Research Network and Facility Services Division, National Institute for Materials Science, 1–2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan;4. Nanostructures Research Laboratory, Japan Fine Ceramics Center, 2–4-1 Mutsuno, Atsuta-ku, Nagoya 456-8587, Japan;1. State Key Laboratory for Mechanical Behavior of Materials & School of Materials Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China;2. State Key Laboratory for Mechanical Behavior of Materials & School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China;3. Yixin Electronic Material Co., Ltd, Rizhao 272306, China;1. Guangxi Key Laboratory of Optical and Electronic Materials and Devices, College of Material Science and Engineering, Guilin University of Technology, Guilin 541004, China;2. School of Mechanical Engineering, Guilin University of Aerospace Technology, Guilin 541004, China;3. Key Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, Guilin University of Technology, Guilin 541004, China;1. Institute of Advanced Structure Technology, Beijing Institute of Technology, Haidian District, Beijing 100081, PR China;2. Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, PR China;3. Yangzhou Pinghang Power Technologies Ltd., Co., Yangzhou, Jiangsu, 225200, PR China |
| |
| Abstract: | Integration of doped ceria into fuel electrode-supported solid oxide cells is challenging due to high sintering temperatures leading to undesirable interdiffusion between the layers.We investigate the influence of the dopant in ceria X0.1Ce0.9O1.95 (10XDC, X = Y, Gd or Sm) on the interdiffusion with yttria-stabilized zirconia (8YSZ). Powder mixtures of 8YSZ and 10XDC were sintered at temperatures between 1000 and 1400 °C to quantify the phase formation. Interdiffusion in layered systems sintered at 1400 °C was investigated by SEM. Symmetrical Ni-10XDC cells with an 8YSZ electrolyte were analyzed using impedance spectroscopy. Despite small differences in the interdiffusion behavior, different dopants do not lead to significant changes in the cell impedance.Notably, the presence of NiO in the fuel electrode leads to enhanced interdiffusion kinetics of 10XDC with 8YSZ and the formation of porosity at the electrolyte interface. The detrimental influence of these microstructural changes on the electrode performance was investigated. |
| |
| Keywords: | Interdiffusion Interfaces Electrochemistry Fuel cell materials Doped ceria |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
