Control of Solid Oxide Fuel Cells Damage using Infrared Thermography

El-amiri, Asseya; Saifi, Abderrahim; Obbadi, Abdellatif; Errami, Youssef; Sahnoun, Smail; Elhassnaoui, Ahmed

doi:10.1109/irsec.2017.8477422

Cited by 2 publications

(2 citation statements)

References 7 publications

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“…Because SOFC consists of a layered composite of several materials, the ΔTEC of each component will lead to mechanical stresses that will cause damage to the cell ( Figure 10 a,b). [ 43 ] The most serious obstacle is the breakdown of electrolytes. The electrode material must have a TEC value that is slightly larger than the electrolyte to accommodate thermal flexibility during the expansion of the electrolyte.…”

Section: Mismatch Of Tecmentioning

confidence: 99%

Figure‐of‐Merit Compatibility of Solid Oxide Fuel Cells

et al. 2023

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Solid oxide fuel cell (SOFC) is one of the most efficient energy converters which can produce electricity from reactions of gaseous chemicals. However, a high operating temperature (T o) of 800–1200 °C is required to achieve the highest peak performance. Such high T o triggers miscellaneous problems, that is, mechanical disintegration with further degradation of its electrical performance for a long‐term application. Despite accomplishing various approaches for the improvement of SOFC performance, the standard level to determine SOFC performance has never been achieved. To date, a quantitative analysis is only pinpointing the power output density (P out). The SOFC cannot be simply determined by a mere P since other parameters that is chemical stability between SOFC components, mismatch of thermal expansion coefficient, and area‐specific resistance also contribute to the mechanical durability and electrochemical stability of the SOFC. Hence, herein, a novel idea is proposed to characterize the overall performance of SOFC through the figure‐of‐merit compatibility (χ cp) of SOFC cells. The χ cp can reflect a level of SOFC performance, thus it can be utilized for future improvements.

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Section: Mismatch Of Tecmentioning

confidence: 99%

Figure‐of‐Merit Compatibility of Solid Oxide Fuel Cells

et al. 2023

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“…Shao et al, developed the dynamic theoretical model to predict energy conversion and crack propagation in SOFC unit, and the result showed that crack propagation path depended on the location and orientation of precrack. On the basis of quantitative analysis of temperature distribution by pulsed infrared thermography, 15,16 El‐Amiri et al, obtained crack initiation information, and crack propagation was simulated in electrolyte/anode‐supported planar SOFCs 17 . Furthermore, the mechanism of crack initiation and degradation for planar SOFC at high working temperature was obtained, and crack initiation in the anode–electrolyte interface was concluded by Kim et al 18 …”

Section: Introductionmentioning

confidence: 99%

Numerical study of detecting crack initiation in a planar solid oxide fuel cell

Fahs

Ghassemi

Fahs

2020

Env Prog and Sustain Energy

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Converting chemical energy into electricity is done by an electrochemical device known as a fuel cell. Thermal stress is caused by high operating temperature, between 700 and 1,000 C, of solid oxide fuel cell (SOFC). Thermal stress is the main cause of crack initiation and crack propagation. This phenomenon may cause gas leakage, structure instability and cease operation of the SOFC before its lifetime. The aim of this study is to present a method that predicts the initiation of cracks in an anisotropic porous planar SOFC. The coupled governing nonlinear differential equations are solved numerically as for heat transfer, fluid flow, mass transfer, mass continuity, and momentum. An in-house computer code which is based on computational fluid dynamics, computational structural mechanics and extended finite element method is utilized and developed. This code, according to Darcy and Navier-Stokes thermofluid model, determines the temperature and stress distribution. The results show that the highest thermal stress occurs at the upper corners of cathode and at the lower corners of the anode. The maximum temperature occurs at the middle of the electrolyte cathode and electrolyte anode, while the maximum pressure occurs at the middle of the upper and lower section of the anode and cathode. In addition, the thickness of the cathode electrode at the left side is increased by 1.5%. Finally, the crack initiation occurs at the left side between the upper and lower corners of the cathode.

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Control of Solid Oxide Fuel Cells Damage using Infrared Thermography

Cited by 2 publications

References 7 publications

Figure‐of‐Merit Compatibility of Solid Oxide Fuel Cells

Figure‐of‐Merit Compatibility of Solid Oxide Fuel Cells

Numerical study of detecting crack initiation in a planar solid oxide fuel cell

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