Determination of the bonding strength in solid oxide fuel cells’ interfaces by Schwickerath crack initiation test

Boccaccini, Dino Norberto; Ševeček, Oldřich; Frandsen, Henrik Lund; Dlouhý, Ivo; Molin, Sebastian; Charlas, Benoit; Hjelm, Johan; Cannio, Maria; Hendriksen, Peter Vang

doi:10.1016/j.jeurceramsoc.2017.04.018

Cited by 19 publications

(8 citation statements)

References 28 publications

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“…Nevertheless, the commercialization of SOFCs is still hindered by critical issues with durability and cost of installation. Durability issues stem from both moderate degradation rates of active electrodes and specific issues of material selection and combination of materials that can tolerate rapid fluctuations in operating temperatures . Cell and interconnect components in SOFC‐stacks are commonly sealed using glass or glass‐ceramic sealants, cf.…”

Section: Introductionmentioning

confidence: 99%

A Ba‐free sealing glass with a high coefficient of thermal expansion and excellent interface stability optimized for SOFC/SOEC stack applications

Ritucci

Agersted

Zielke

et al. 2018

Int J Applied Ceramic Tech

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A new glass-ceramic composition containing Si, Mg, Ca, Na, Al, Zr, and B is presented here as sealant for planar SOFCs/SOECs, with the aim of joining the metallic interconnect (Crofer22APU) to the solid oxide cell (YSZ electrolyte or CGO barrier layer). Characteristic temperature, thermo-mechanical properties, and compositional variations are reviewed and discussed by thermal analyses and in situ XRD, in order to design and optimize the sealing profile and reduce the residual porosity. The glass after heat treatment partially devitrifies into augite and nepheline with residual glass phase of around 64.3%; after crystallization the glass-ceramic sealant has a coefficient of thermal expansion of 12.8 9 10 À6 K À1 and it is compliant with the other materials typically used for stack components.This work shows that the developed glass-ceramic can successfully join the ceramic cell with the Crofer22APU (preoxidized and alumina coating), proven by tests on small and large-scale samples. No signs of unwanted reactions at the glass-metal and the glass-cell interface are observed and sufficient gas tightness is achieved. K E Y W O R D Sglass-ceramics, solid oxide fuel cell, synthesis, thermal analysis

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Section: Introductionmentioning

confidence: 99%

A Ba‐free sealing glass with a high coefficient of thermal expansion and excellent interface stability optimized for SOFC/SOEC stack applications

Ritucci

Agersted

Zielke

et al. 2018

Int J Applied Ceramic Tech

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“…For example, Molin et al evaluated a Co3O4/LSM based dual layer coating, that successfully limited the corrosion rate of the interconnect but was permeable to Cr diffusion. Thus coatings both lowering the chromium diffusion and limiting oxide growth with good mechanical properties are required [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Microstructural and electrical characterization of Mn-Co spinel protective coatings for solid oxide cell interconnects

Molin

Sabato

Bindi

et al. 2017

Journal of the European Ceramic Society

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“…DSE‐SOFCs will break when the internal force was greater than the bonding stress between anode and electrolyte layers. However, the internal force was less than the bonding stress . Therefore, the symmetric structure caused cells more stable and not easily be disturbed by external factors.…”

Section: Resultsmentioning

confidence: 99%

Structure evaluation of anode‐supported planar solid oxide fuel cells based on single/double‐sided electrolyte(s) under redox conditions

Liu

Zheng

Wang

et al. 2019

Int J Applied Ceramic Tech

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Structure evaluation was comparably studied with the traditional thin anode-supported solid oxide fuel cells based on single-sided electrolyte (SSE-SOFCs) and the thick flat-tube solid oxide fuel cells based on double-sided electrolytes (DSE-SOFCs) under redox conditions. Results showed that the structure of DSE-SOFCs remained unchanged, especially the electrolyte kept un-cracked during the redox process, whereas SSE-SOFC was warped and, in some cases, cracked as the thickness of supported anode was less than 1 mm, which indicated that the DSE-SOFCs exhibited better redox stability than the SSE-SOFCs. K E Y W O R D Sanode-supported solid oxide fuel cells, redox, structure evaluation

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Determination of the bonding strength in solid oxide fuel cells’ interfaces by Schwickerath crack initiation test

Cited by 19 publications

References 28 publications

A Ba‐free sealing glass with a high coefficient of thermal expansion and excellent interface stability optimized for SOFC/SOEC stack applications

A Ba‐free sealing glass with a high coefficient of thermal expansion and excellent interface stability optimized for SOFC/SOEC stack applications

Microstructural and electrical characterization of Mn-Co spinel protective coatings for solid oxide cell interconnects

Structure evaluation of anode‐supported planar solid oxide fuel cells based on single/double‐sided electrolyte(s) under redox conditions

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