Flash cosintering of a lanthanum strontium cobalt ferrite nanofibre/Gd-doped ceria bilayer structure |
| |
| Affiliation: | 1. School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd, Shanghai 200240, China;2. Shanghai Key Laboratory of Advanced High-Temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd, Shanghai 200240, China;3. Department of Electronic Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd, Shanghai 200240, China;1. Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science & Technology University, Beijing 100083, China;2. Beijing Institute of Aeronautical Materials, Aero Engine Corporation of China, Beijing 100095, China;3. AECC Sichuan Gas Turbine Establishment, Mianyang 621000, China;4. Research Institute Aero-Engine, Beihang University, 100190, China;1. School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, Anhui, China;2. National Key Laboratory of Science and Technology on Vacuum Technology & Physics, Lanzhou Institute of Physics, Lanzhou 730000, China;3. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China;1. Giant Dielectric and Computational Design Research Group (GD–CDR), Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand;2. Synchrotron Light Research Institute (Public Organization), 111 University Avenue, Muang District, Nakhon Ratchasima 30000, Thailand;1. Central Institute of Engineering, Electronics and Analytics – and Engineering and Technology (ZEA-1), Forschungszentrum Jülich GmbH, Jülich, Germany;2. Institute of Energy and Climate Research – Materials Synthesis and Processing (IEK-1), Forschungszentrum Jülich GmbH, Jülich, Germany;3. Faculty of Mechanical Engineering, RWTH Aachen University, Aachen, Germany;1. State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, Liaoning, China;2. Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110169, Liaoning, China;3. University of Chinese Academy of Sciences, Beijing 100049, China;4. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110169, Liaoning, China;5. School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, Liaoning, China |
| |
| Abstract: | For solid oxide fuel cells, an important structural requirement is that the electrolyte layer needs to be dense and the electrode layer porous, which is difficult to obtain by conventional cosintering. In this work, flash cosintering of a double layer structure consisting of a Gd-doped ceria substrate with a lanthanum strontium cobalt ferrite nanofibre coating is investigated. Experimental and finite element modelling results reveal that when the LSCF layer is connected to the electrode, the heat is concentrated in the LSCF layer, which leads to a huge temperature gradient and introduces severe cracking. When the LSCF layer is electrically isolated from the electrode, the heat is concentrated in the GDC layer, and the temperature gradient is dramatically reduced. In this situation, the density of GDC can reach 92.86% while a high porosity of 52.26% is maintained in the LSCF layer, which is higher than that of the conventional cosintered sample. |
| |
| Keywords: | Flash Sintering Solid Oxide Fuel Cell Double Layer Significant Difference in Porosities |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
