Multi-Physics Modeling Assisted Design of Non-Coking Anode for Planar Solid Oxide Fuel Cell Fueled by Low Steam Methane  

基于多物理场模拟的低水甲烷燃料固体氧化物燃料电池的抗积碳阳极设计（英文）

作　　者：Jiang Zhu Bao-xuan Wang Zi-jing Lin 朱江;王宝轩;林子敬(中国科学技术大学物理系合肥微尺度物质科学国家研究中心)

机构地区：[1]Hefei National Laboratory for Physical Sciences at the Microscale&CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics,Department of Physics,University of Science and Technology of China,Hefei 230026,China

出　　处：《Chinese Journal of Chemical Physics》2018年第5期661-666,735,共7页化学物理学报（英文）

基　　金：supported by the National Natural Science Foundation of China (No.11574284 abd No.11774324);the National Basic Research Program of China (No.2012CB215405);Collaborative Innovation Center of Suzhou Nano Science and Technology

摘　　要：Internal reformation of low steam methane fuel is highly beneficial for improving the energy efficiency and reducing the system complexity and cost of solid oxide fuel cells(SOFCs).However,anode coking for the Ni-based anode should be prevented before the technology becomes a reality.A multi-physics fully coupled model is employed to simulate the operations of SOFCs fueled by low steam methane.The multi-physics model produces I-V relations that are in excellent agreement with the experimental results.The multi-physics model and the experimental non-coking current density deduced kinetic carbon activity criterion are used to examine the effect of operating parameters and the anode diffusion barrier layer on the propensity of carbon deposition.The interplays among the fuel utilization ratio,current generation,thickness of the barrier layer and the cell operating voltage are revealed.It is demonstrated that a barrier layer of 400μm thickness is an optimal and safe anode design to achieve high power density and non-coking operations.The anode structure design can be very useful for the development of high efficiency and low cost SOFC technology.

关 键 词：Carbon activity Methane steam reformation Diffusion barrier layer Fuel utilization ratio Non-coking condition 

分 类 号：TM911.4[电气工程—电力电子与电力传动]