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

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 incl...

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Bibliographic Details
Published in:Energies (Basel) 2023-11, Vol.16 (21), p.7349
Main Authors: Xie, Jiamiao, Li, Jingyang, Hao, Wenqian, Wang, Fenghui
Format: Article
Language:English
Subjects:
Analysis
corrugated SOFC
Crack initiation
Crack propagation
Efficiency
Electrodes
Electrolytes
Energy industry
Fuel cell industry
Fuel cells
Heat
heat conduction
High temperature
Hydrogen as fuel
inhomogeneous temperature field
interface morphology
Interfaces
Investigations
Morphology
thermal stress
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Summary: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.
ISSN:1996-1073
1996-1073
DOI:10.3390/en16217349