Abstract
Solid Oxide Fuel Cells (SOFCs) work under severe environment which deteriorate anode material properties and reduce its serviceable life. Besides electrochemical performance, structural integrity of SOFC anode is essential for successful long-term operation. SOFC anode material is subjected to stresses at high temperature, thermal and redox cycles and fuel gas contaminants effects on its structure during long-term operation. These mechanisms can degrade anode microstructure and decrease electrochemical performance and structural properties. In this research an anode material degradation model is developed and implemented in finite element analysis. The model incorporates thermo-mechanical and fuel gas contaminants degradation effects and predicts long-term structural integrity of SOFC anode. An analytical solution is also developed for button cell deformation under uniform pressure to establish correlation between the degradation model and experimental measurements. Preliminary results of the model application on the planar co-flow SOFC are also presented.
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