Single‐step fabrication of an anode supported planar single‐chamber solid oxide fuel cell

Sayan, Yunus; Venkatesan, V.; Guk, Erdogan; Wu, Houzheng; Kim, Jung-Sik

doi:10.1111/ijac.13012

Cited by 11 publications

(15 citation statements)

References 28 publications

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“…[ 81 ], the peak specific power of 633 mW cm −2 was achieved on laboratory samples of MS DF-SOFC, whereas the specific power of the stack prototype tested on a commercial camping stove reached only 156 mW cm −2 [ 102 ], which is close to the one of ES DF-SOFC. Mostly, electrolytes and anodes are used as supporting components in SC-SOFC too [ 7 , 60 , 103 , 104 , 105 ]. In the single work [ 106 ] devoted to cathode-supported SC-SOFC, the peak specific power of only 9 mW∙cm −2 was obtained, whereas in AS SC-SOFC, power values of the order of 200–400 mW∙cm −2 are achieved [ 104 , 105 ].…”

Section: Classification Of Sofcmentioning

confidence: 99%

Classification of Solid Oxide Fuel Cells

et al. 2022

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Solid oxide fuel cells (SOFC) are promising, environmentally friendly energy sources. Many works are devoted to the study of materials, individual aspects of SOFC operation, and the development of devices based on them. However, there is no work covering the entire spectrum of SOFC concepts and designs. In the present review, an attempt is made to collect and structure all types of SOFC that exist today. Structural features of each type of SOFC have been described, and their advantages and disadvantages have been identified. A comparison of the designs showed that among the well-studied dual-chamber SOFC with oxygen-ion conducting electrolyte, the anode-supported design is the most suitable for operation at temperatures below 800 °C. Other SOFC types that are promising for low-temperature operation are SOFC with proton-conducting electrolyte and electrolyte-free fuel cells. However, these recently developed technologies are still far from commercialization and require further research and development.

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Section: Classification Of Sofcmentioning

confidence: 99%

Classification of Solid Oxide Fuel Cells

et al. 2022

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“…In order to obtain the designed thicknesses of the electrolyte and electrodes for the anode-supported planar SC-SOFC, these green layers were stacked and subsequently hot-pressed. Details of the chemicals made the green tapes are given by the supplier, and can be found in reference [23]. In addition, the particle size of the cathode green band was chosen to be 1 µm, as opposed to 0.3 µm for the electrolyte and anode green tapes, so as to retard the sintering of the cathode.…”

Section: Row Materialsmentioning

confidence: 99%

“…However, the sintered cell consists of three different layers, cathode, electrolyte and anode. Nevertheless, the equation 3 can still be utilized for the cell in this study if one accept electrolyte and anode as one sheet because the anode and electrolyte possess close shrinkage properties [23] and CTE (see Table 1). Besides, the anode itself is composed of 40% of electrolyte (CGO) material before sintering and the electrolyte thickness is relatively small comparing to anode for the anode supported planar SC-SOFC.…”

Section: Introductionmentioning

confidence: 99%

Residual Stress Measurement of a Single-step Sintered Planar Anode Supported SC-SOFC Using Fluorescence Spectroscopy

Sayan

Kim

2022

Bitlis Eren Üniversitesi Fen Bilimleri Dergisi

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The fluorescence spectroscopy technique was used to measure the residual stress between the cathode and electrolyte of an anode supported planar single-chamber solid oxide fuel cell. The cell was made of (NiO-CGO) :(CGO) :(LSCF-CGO), as anode:electrolyte:cathode and the test was carried out after sintering at room temperature. The measured stress between these layers arises from the sintering stress caused by differential shrinkage from layers during sintering and the thermal expansion co-efficient mismatch between the layers during cooling. Therefore, the residual stress in the cathode and electrolyte layer of the cell due to co-efficient of thermal expansion mismatch during cooling was calculated analytically so as to find sintering stress. According to findings a maximum compressive residual stress of -1084 MPa occurred at the place contiguous to electrolyte layer. The estimated residual stresses in the cell’s cathode and electrolyte layer owing to CTE mismatch for the duration of cooling was calculated as -324 MPa and 15.96 MPa, respectfully. Furthermore, total mean residual compressive stress between cathode and electrolyte was obtained from fluorescence spectroscopy as -703.795. Thus, the main contribution of this residual stress is the stress growth during sintering (-395.755 MPa) due to different shrinkage behavior of adjacent layers.

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“…There has also been some work with 3D printed and tape-casted parts utilizing multilayer and multi-material approaches for making bulk structures [19][20][21][22][23], but a better understanding of the sintering and processing with and without an applied mechanical load is needed to achieve the best densities and properties. Fundamentally, 3D printing of materials needing sintering may have the same constraints as multilayers with different densities because of gaps, defects, and layering effects [22,23], but the focus of this research does not discuss this further.…”

Section: Introductionmentioning

confidence: 99%

A Lamination Model for Pressure-Assisted Sintering of Multilayered Porous Structures

Jin

Cramer

2021

J. Compos. Sci.

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This work describes a lamination model for pressure-assisted sintering of thin, multilayered, and porous structures based on the linear viscous constitutive theory of sintering and the classical laminated plate theory of continuum mechanics. A constant out-of-plane normal stress is assumed in the constitutive relation. The lamination relations between the force/moment resultants and the strain/curvature rates are presented. Numerical simulations were performed for a symmetric tri-layer laminate consisting of a 10% gadolinia doped ceria (Ce0.9Gd0.1O1.95-δ) composite structure, where porous layers were adhered to the top and bottom of a denser layer under uniaxially-applied pressures and the sinter forging conditions. The numerical results show that, compared with free sintering, the applied pressure can significantly reduce the sintering time required to achieve given layer thicknesses and porosities. Unlike free sintering, which results in a monotonic decrease of the laminate in-plane dimension, pressure-assisted sintering may produce an in-plane dimension increase or decrease, depending on the applied pressure and sintering time. Finally, the individual layers in the laminate exhibit different stress characteristics under pressure-assisted sintering.

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Single‐step fabrication of an anode supported planar single‐chamber solid oxide fuel cell

Cited by 11 publications

References 28 publications

Classification of Solid Oxide Fuel Cells

Classification of Solid Oxide Fuel Cells

Residual Stress Measurement of a Single-step Sintered Planar Anode Supported SC-SOFC Using Fluorescence Spectroscopy

A Lamination Model for Pressure-Assisted Sintering of Multilayered Porous Structures

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