Influence of Interface Morphology on the Thermal Stress Distribution of SOFC under Inhomogeneous Temperature Field

Jiamiao Xie, Jingyang Li, Wenqian Hao () and Fenghui Wang ()
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Jiamiao Xie: School of Aerospace Engineering, North University of China, Taiyuan 030051, China
Jingyang Li: School of Aerospace Engineering, North University of China, Taiyuan 030051, China
Wenqian Hao: School of Aerospace Engineering, North University of China, Taiyuan 030051, China
Fenghui Wang: Bi-Inspired and Advanced Energy Research Center, Department of Engineering Mechanics, Northwestern Polytechnical University, Xi’an 710129, China

Energies, 2023, vol. 16, issue 21, 1-13

Abstract: Excessive thermal stress can cause the failure of a solid oxide fuel cell (SOFC), and an inhomogeneous temperature field is one of the reasons for thermal stress in the cell. In the present work, the bi-dimensional thermo-mechanical coupling models of SOFCs with different interface morphologies including planar and corrugated cells are proposed. The temperature distribution of two types of cells under the action of heat conduction is analyzed. Further, the inhomogeneous temperature field caused by gas flow is used as the thermal load to compare the thermal stress distribution of planar and corrugated cells. The influence of interface morphology on the temperature distribution, stress distribution and the contribution of the temperature gradient to stress distribution are investigated. This research provides a reference for reducing thermal stress and improving the stability of SOFC.

Keywords: inhomogeneous temperature field; heat conduction; thermal stress; interface morphology; corrugated SOFC (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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