首页 | 本学科首页   官方微博 | 高级检索  
     


Effect of thermal cycling on durability of a solid oxide fuel cell stack with external manifold structure
Affiliation:1. Department of Mechanical Engineering, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan;2. Department of Hydrogen Energy Systems, Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan;3. TOHO GAS Fuel Cell Technology Group, 507-2 Shinpomachi, Tokai, Aichi, 476-8501, Japan;1. Department of Mechanical Engineering, National Central University, Jhong-Li District, Tao-Yuan City 32001, Taiwan;2. Division of Nuclear Fuels and Materials, Institute of Nuclear Energy Research, Lung-Tan District, Tao-Yuan City 32546, Taiwan;1. Hefei National Laboratory for Physical Sciences at Microscales & CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, Department of Physics, University of Science and Technology of China, Hefei, 230026, China;2. Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China;1. School for Engineering of Matter, Transport and Energy, Arizona State University, 501 E. Tyler Mall, Tempe, AZ, 85287-6106, USA;2. Department of Mechanical and Aerospace Engineering, Syracuse University, Syracuse, NY, 13244, USA;1. School of Materials Science and Engineering, State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science & Technology, 430074 Wuhan, Hubei, China;2. School of Automation, Huazhong University of Science & Technology, 430074 Wuhan, Hubei, China;3. School of Naval Architecture & Ocean Engineering, Huazhong University of Science & Technology, 430074 Wuhan, Hubei, China
Abstract:A 5-cell stack with external manifold is thermal cycled between room temperature and 750 °C fifteen times. The electric performances after each cycle are measured and compared. The stack has an initial peak output of 328.44 W and shows excellent stability in thermal cycling. The average operating voltage degradation rate is only 0.8% corresponding each thermal cycle. A cell from the stack is randomly chosen for electrochemical evaluation. Its performance is found to be comparable to a cell which is not thermal cycled. Post-test examination shows deterioration of cathode contact materials at points of contact and cracks throughout the oxide layer between corrugated and bipolar plates to be the main causes of the degradation.
Keywords:Solid oxide fuel cell stack  Thermal cycling  Performance degradation  Post-test examination
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号