Assessing performance degradation induced by thermal cycling in solid oxide cells

Enhancing Wind Turbine Blade Preventive Maintenance Procedure through Computational Fluid Dynamics-Based Prediction of Wall Shear Stress

“…Consequently, we can conclude that wall shear stress serves as a reliable predictor of blade surface delamination and associated damage. These results, like the mechanism described in other research [38][39][40], give us confidence that all our settings are correct and that we have obtained numerical fidelity in the results. Therefore, our simulated results are very important for the Lamthakhong Wind Farm as they enable the implementation of an effective preventive maintenance strategy.…”

Syngas Production from CO2 and H2O via Solid-Oxide Electrolyzer Cells: Fundamentals, Materials, Degradation, Operating Conditions, and Applications

“…Researchers have proposed several mechanisms to explain delamination, including the formation of nanoparticles and a secondary phase, accumulation of high oxygen partial pressures, interdiffusion of elements at the electrolyte−electrode interface, and mismatched coefficients of thermal expansion during thermal cycling. 55,115,304,305 Because of a large oxygen-activity gradient, oxygen electrodes may delaminate, which forms gaseous oxygen in the electrolyte near the electrode/electrolyte interface and, in turn, generates nanopores at grain boundaries. Ultimately, the initial generation of micropores destroys the macroscopic continuity between the electrode and electrolyte, which shortens the long-term stability of the cell.…”

“…During SOEC operation, the SOEC commonly degrades via oxygen-electrode delamination. Researchers have proposed several mechanisms to explain delamination, including the formation of nanoparticles and a secondary phase, accumulation of high oxygen partial pressures, interdiffusion of elements at the electrolyte–electrode interface, and mismatched coefficients of thermal expansion during thermal cycling. ,,, …”

Discovering two general characteristic times of transient responses in solid oxide cells

“…The electrical response time of SOC is constrained by the slow heat and mass transfer processes within the cell 15 , 16 . Varying load changes may result in under-performance, thermal safety concerns, and degradation of SOCs 11 , 17 – 19 . To mitigate these challenges, researchers have proposed several control and design strategies 20 – 24 aimed at facilitating safe operation and improving the inherent transient characteristics of SOCs.…”