Stress and Fracture Behavior of Monolithic Fuel Cell Tapes

Majumdar, S.; Claar, T. D.; Flandermeyer, B. K.

doi:10.1111/j.1151-2916.1986.tb04821.x

Cited by 75 publications

(27 citation statements)

References 4 publications

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“…Majumdar et al reported a detailed study about the stress and fracture behaviour of a three-layer ceramic SOFC developed at the Argonne National Lab [17]. They concluded that small differences in the TECs of different layers results in layer stresses and causes cracking parallel to the plane of the layers.…”

Section: Thermo-mechanical Mismatchmentioning

confidence: 99%

Strategies for Lowering Solid Oxide Fuel Cells Operating Temperature

Tarancón

2009

Energies

185

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Abstract:Lowering the operating temperature of solid oxide fuel cells (SOFCs) to the intermediate range (500-700 ºC) has become one of the main SOFC research goals. High operating temperatures put numerous requirements on materials selection and on secondary units, limiting the commercial development of SOFCs. The present review first focuses on the main effects of reducing the operating temperature in terms of materials stability, thermo-mechanical mismatch, thermal management and efficiency. After a brief survey of the state-of-the-art materials for SOFCs, attention is focused on emerging oxide-ionic conductors with high conductivity in the intermediate range of temperatures with an introductory section on materials technology for reducing the electrolyte thickness. Finally, recent advances in cathode materials based on layered mixed ionic-electronic conductors are highlighted because the decreasing temperature converts the cathode into the major source of electrical losses for the whole SOFC system. It is concluded that the introduction of alternative materials that would enable solid oxide fuel cells to operate in the intermediate range of temperatures would have a major impact on the commercialization of fuel cell technology.

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Section: Thermo-mechanical Mismatchmentioning

confidence: 99%

Strategies for Lowering Solid Oxide Fuel Cells Operating Temperature

Tarancón

2009

Energies

185

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“…With the above understanding, the failure at the SABS-0/ZrO 2 interface can be analysed as follows. The fracture strength of the ZrO 2 electrolyte is ≥ 200 MPa, which is much greater than the tri-layer assembly rupture strength (15 MPa) [34][35][36]. Even with the consideration of the thin electrolyte layer, it is unlikely that the ZrO 2 electrolyte is the failure initiation point.…”

Section: Rupture Strengthmentioning

confidence: 96%

Sealing Evaluation of an Alkaline Earth Silicate Glass for Solid Oxide Fuel/Electrolyser Cells

Mahapatra

2011

Fuel Cells

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Glass is the most recognised material to seal solid oxide fuel/electrolyser cell components. We have developed a SrO‐La2O3‐Al2O3‐SiO2 (SABS‐0) based seal glass with all the desired thermophysical properties and thermochemical stability. In this study, the SABS‐0 seal glass is sandwiched between AISI 441 interconnect alloy and fully stabilised ZrO2 electrolyte for sealing ability evaluation. The sealing performance and the thermal cycling resistance of the tri‐layer assembly are tested by a pressure leakage test with 3–20 K min–1 heating rates for 2,500 h and 100 thermal cycles. The sealing strength is evaluated by a rupture strength test. The results show that the SABS‐0 glass is hermetic for at least 2,500 h and has high rupture strength for solid oxide fuel/electrolyser cell component sealing. The stress state for the tri‐layer assembly has been analysed using three different approaches.

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“…To avoid cell cracking and delamination during cell fabrication and operation, the CTE of anode-support is required to match with those of other cell components [25]. Without adding LaNbO 4 , the CTE of the NiO-YSZ composite was 13.6 Â 10 À6 K À1 , which is in agreement with that reported in literature [26]; adding 30 wt.% of LaNbO 4 into the NiO-YSZ, the CTE of 30LNO decreased to 12.4 Â 10 À6 K À1 , which is even closer to that of YSZ electrolyte (10.3 Â 10 À6 K À1 [26]).…”

Section: Effect Of Lanbo 4 Addition On Thermal Expansion Behaviormentioning

confidence: 99%

Improved mechanical properties and thermal expansion behavior of NiO–Y2O3 stabilized ZrO2 composite by addition of LaNbO4 for anode-support of planar solid oxide fuel cells

Chi

et al. 2015

Journal of Alloys and Compounds

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Stress and Fracture Behavior of Monolithic Fuel Cell Tapes

Cited by 75 publications

References 4 publications

Strategies for Lowering Solid Oxide Fuel Cells Operating Temperature

Strategies for Lowering Solid Oxide Fuel Cells Operating Temperature

Sealing Evaluation of an Alkaline Earth Silicate Glass for Solid Oxide Fuel/Electrolyser Cells

Improved mechanical properties and thermal expansion behavior of NiO–Y2O3 stabilized ZrO2 composite by addition of LaNbO4 for anode-support of planar solid oxide fuel cells

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