High temperature stability of porous metal substrates under highly humidified hydrogen conditions for metal supported Solid Oxide Fuel Cells

Sarasketa-Zabala, E.; Otaegi, Laida; Rodrı́guez-Martı́nez, Lide M.; Alvarez, Mario; Burgos, N.; Castro, Francisco; Villarreal, I.

doi:10.1016/j.ssi.2012.06.014

Cited by 33 publications

(19 citation statements)

References 38 publications

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“…The overall polarization resistances were 0.17, 0.26, 0.40 and 0.72 Ω cm 2 while the pure ohmic resistances were 0.10, 0.11, 0.16 and 0.24 Ω cm 2 at 800°C, 750°C, 700°C and 650°C, respectively. One of the drawbacks of the SOEC employing a metal support is the oxidation of the metal support under high steam content [23]. The MS-SOEC comprised of ferritic steel/Ni-YSZ/YSZ/LSCF has been demonstrated and showed a degradation rate of 3.2% kh −1 at a steam content of 43% and a current density of −0.3 A cm −2 at 800°C [24].…”

Section: Resultsmentioning

confidence: 99%

“…Secondly, the oxygen electrode catalyst, Nd 2 O 3 -Nd 2 NiO 4+ δ (Nd 2 O 3 -NNO), was introduced into the porous SSZ backbone using an aqueous solution containing Nd(NO 3 ) 3 , Ni(NO 3 ) 2 and citric acid in a molar ratio of 2:1:3. After drying, the Ni-Sm 0.2 C 0.8 O 2 − δ (SDC) was impregnated into the porous 430 L-YSZ backbone as Electrochemistry Communications 54 (2015) [23][24][25][26][27] the hydrogen electrode catalyst at a weight ratio of 2:8 [13]. Both catalysts were impregnated into the porous SSZ backbone and porous 430 L-8YSZ backbone for each experiment.…”

Section: Methodsmentioning

confidence: 99%

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High performance solid oxide electrolysis cell with impregnated electrodes

Chen

Zhou

Liu

et al. 2015

Electrochemistry Communications

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

High performance solid oxide electrolysis cell with impregnated electrodes

Chen

Zhou

Liu

et al. 2015

Electrochemistry Communications

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“…Thyssen Krupp's data however show high ASRs for SS 446 alloy (24% Cr), compared to Crofer, at 800°C. More detailed properties of Crofer 22H, and a comparison with APU and other alloys, have been compiled by Sarasketa‐Zabala et al (2012), shown in Tables and .…”

Section: Review Of Metallic Porous Substrates and Icsmentioning

confidence: 99%

Recent developments in metal‐supported solid oxide fuel cells

Krishnan

2017

WIREs Energy & Environment

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Metal‐supported solid oxide fuel cells (MSCs) offer certain strategic advantages over the more conventional solid oxide fuel cells (SOFCs), which comprise only ceramic materials. Since alloys such as ferritic steels are very similar in their coefficient of thermal expansion (CTE) with ceramic components, viz., cerias, zirconias, and nickel oxide doped with either of them, they could provide excellent thermal cyclability while maintaining a strong interlayer bond. Therefore, in an anode‐supported cell the entire NiO‐ceramic support can be replaced by a ferritic steel porous support—the catalytically active NiO is therefore, a functional layer only. A huge savings in materials cost is achievable, because cerias and zirconias [usually doped with Y, Gd, Sm rare earth (RE) elements] are considerably more expensive that ferritic steels. Lowering the capital costs for SOFCs is an extensive global undertaking with US Department of Energy (DOE) laying down targets such as ~$ 200/kW for the stack itself, in order for SOFCs to become competitive with grid power costs and to offer a power source that promises 24 × 7 power supply for critical applications. This will eventually lead to a premier electricity generation device in the distributed power space, with the highest known electrical efficiencies (>50%). MSCs need very robust, high precision, and cost‐effective manufacturing techniques, which are scalable to high volumes. One of the main goals in this review is to showcase some of the work done in this area since the last review (2010), and to assess the technology challenges, and new solutions that have emerged over the past few years. WIREs Energy Environ 2017, 6:e246. doi: 10.1002/wene.246 This article is categorized under: Fuel Cells and Hydrogen > Science and Materials

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“…When ferritic stainless steels are used in porous supports for SOFCs, the oxidation behavior differs from that observed in dense interconnects. In addition to chromia, Fe 2 O 3 has been observed on porous supports: this phase forms when there is a high surface area and insufficient chromium available in the bulk to form only Cr 2 O 3 on the surface 9, 10. Another issue associated with Cr 2 O 3 ‐forming supports (as well as dense interconnects) is chromium poisoning.…”

Section: Introductionmentioning

confidence: 99%

Degradation of La_0.6Sr_0.4Co_0.2Fe_0.8O_3–_δ–Ce_0.8Sm_0.2O_1.9 Cathodes on Coated and Uncoated Porous Metal Supports

et al. 2016

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The degradation of composite LSCF-SDC cathodes on porous 430 stainless steel supports was investigated. Two degradation mechanisms were observed: a multi-layer oxide scale, believed to consist of Cr 2 O 3 and SrCrO 4 , formed at the support-cathode interface, and small amounts of chromium were detected within the cathodes. To reduce degradation, La 2 O 3 and Y 2 O 3 reactive element oxide coatings were deposited on the internal pore surfaces of the metal supports. The reactive element oxide coatings reduced the amount of volatile chromium that deposited in the cathodes. As a result, the degradation rates of the cathodes on coated supports were significantly lower than the degradation rates of cathodes made on uncoated metal supports. In cathode symmetrical cells, polarization resistance degradation rates as low as 2.56 10 -6 Ω cm 2 h -1 were observed over 100 hours on coated metal supports, compared to an average of 1.23 10 -4 Ω cm 2 h -1 on uncoated supports.

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High temperature stability of porous metal substrates under highly humidified hydrogen conditions for metal supported Solid Oxide Fuel Cells

Cited by 33 publications

References 38 publications

High performance solid oxide electrolysis cell with impregnated electrodes

High performance solid oxide electrolysis cell with impregnated electrodes

Recent developments in metal‐supported solid oxide fuel cells

Degradation of La_0.6Sr_0.4Co_0.2Fe_0.8O_3–_δ–Ce_0.8Sm_0.2O_1.9 Cathodes on Coated and Uncoated Porous Metal Supports

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High temperature stability of porous metal substrates under highly humidified hydrogen conditions for metal supported Solid Oxide Fuel Cells

Cited by 33 publications

References 38 publications

High performance solid oxide electrolysis cell with impregnated electrodes

High performance solid oxide electrolysis cell with impregnated electrodes

Recent developments in metal‐supported solid oxide fuel cells

Degradation of La0.6Sr0.4Co0.2Fe0.8O3–δ–Ce0.8Sm0.2O1.9 Cathodes on Coated and Uncoated Porous Metal Supports

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Degradation of La_0.6Sr_0.4Co_0.2Fe_0.8O_3–_δ–Ce_0.8Sm_0.2O_1.9 Cathodes on Coated and Uncoated Porous Metal Supports