Size dependence of warpage in solid oxide fuel cell

Azari, Khaled; Mohandesi, Jamshid Aghazadeh; Vaghasloo, Y. Alizadeh

doi:10.1016/j.jpowsour.2015.10.016

Cited by 4 publications

(4 citation statements)

References 52 publications

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“…Figure 3 shows the small half-cells after this step. Further experimental details of the fabrication process are described in previous works (Azari et al, 2015;Azari et al, 2016).…”

Section: Sample Preparationmentioning

confidence: 99%

Experimental Investigation on Potential Effect of Cell Shape and Size on the Residual Stress in Solid Oxide Fuel Cells

Azari

Abdoli²,

Torabi³

et al. 2022

Front. Energy Res.

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In the manufacturing process of solid oxide fuel cells (SOFCs), the residual stresses and curvature are developed in components due to the differences in material properties of cell layers. Residual stress may lead to the crack formation in the cell layers and facilitates cell fracture. In this work, the changes of the residual stress in the electrolyte layer of the anode-supported planar solid oxide fuel cells are experimentally determined at room temperature. The “sin2ψ” technique of X-ray diffraction method is employed to measure the residual stress in the half-cell samples. Investigation on the changes of the residual stress and curvature state in the scaling-up process of the cell is crucial for commercial use. Therefore, several cells with different sizes and shapes are investigated to evaluate the potential impact of cell size and cell shape on the residual thermal stress. Values of about −610 MPa are determined for the electrolyte layer on an oxidized ∼400 μm thick anode substrate. The results reveal that despite the effect of size and shape on the radius of curvature, these parameters have no significant impact on the residual stress level.

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“…Figure 3 shows the small half-cells after this step. Further experimental details of the fabrication process are described in previous works (Azari et al, 2015;Azari et al, 2016).…”

Section: Sample Preparationmentioning

confidence: 99%

Experimental Investigation on Potential Effect of Cell Shape and Size on the Residual Stress in Solid Oxide Fuel Cells

Azari

Abdoli²,

Torabi³

et al. 2022

Front. Energy Res.

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“…Dried green half-cell was cut into suitable geometries to acquire the desired sizes and shapes after sintering. Further experimental details of the fabrication process are described elsewhere [51,52].…”

Section: Sample Preparationmentioning

confidence: 99%

Investigation on Potential Effect of Cell Shape and Size on the Residual Stress in Solid Oxide Fuel Cells

Azari

Abdoli

Torabi

et al. 2021

Preprint

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In the manufacturing process of solid oxide fuel cells (SOFCs), the residual stresses and curvature are developed in components due to the differences in material properties of cell layers. Significant residual stress may lead to the formation of cracks in the cell layers and facilitates cell fracture. In this work, the changes of the residual stress in the electrolyte of the anode-supported planar solid oxide fuel cells are experimentally determined at room temperature. The “sin2ψ” technique of X-ray diffraction method is employed to measure the residual stress in the half-cell samples. Several cells with different sizes and shapes are investigated to evaluate the potential impact of cell size and cell shape on the thermal residual stress. Because investigation on the changes of the residual stress and curvature state in the scaling up process of cell is crucial for commercial use. Values of about − 610 MPa are determined for an electrolyte layer on an oxidized ∼400µm thick anode substrate. The results reveal that in spite of the effect of size and shape on the radius of curvature, these parameters have no significant effect on the residual stress level.

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“…Some researchers have focused on the mechanical stability of SOFC. Azari et al [1] reported that the curvature radius of the cell increased significantly with the increase in the size of the cell. Nguyen et al [2] found that the optimal sintering temperatures of the anode and electrolyte are 1400 ~ 1450°C , and the best sintering temperature of the cathode is 1200 ~ 1250°C .…”

Section: Introductionmentioning

confidence: 99%

Analysis of the contact resistance of the symmetrical double side cathode solid oxide fuel cell

Zhang

Zheng

Dong

et al. 2023

J. Phys.: Conf. Ser.

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In recent years, all research on symmetrical double side cathode solid oxide fuel cell (SDSC-SOFC) has mainly focused on electrochemical and mechanical properties. However, there is a lack of research on the contact resistance of SDSC-SOFC. The sintering model of SDSC-SOFC is established first, and then based on the sintering model, the impact of the pre-tightening force is considered. The effects of end plate thickness and pre-tightening force on contact resistance are analyzed. In order to improve the mass power density of SDSC-SOFC, an end plate thickness of 30 mm is recommended. The average contact resistance of the cathode decreases with the increase of the pre-tightening force, but the decreasing rate is reduced. When the pre-tightening force is greater than 400 N, the impact of the pre-tightening force on the average cathode contact resistance can be ignored.

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Size dependence of warpage in solid oxide fuel cell

Cited by 4 publications

References 52 publications

Experimental Investigation on Potential Effect of Cell Shape and Size on the Residual Stress in Solid Oxide Fuel Cells

Experimental Investigation on Potential Effect of Cell Shape and Size on the Residual Stress in Solid Oxide Fuel Cells

Investigation on Potential Effect of Cell Shape and Size on the Residual Stress in Solid Oxide Fuel Cells

Analysis of the contact resistance of the symmetrical double side cathode solid oxide fuel cell

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