Progress in Metal-Supported SOFCs

Tucker, Michael C.; Sholklapper, Tal Z.; Lau, Grace Y.; DeJonghe, Lutgard C.; Visco, Steven J.

doi:10.1149/1.3205581

Cited by 20 publications

(7 citation statements)

References 12 publications

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“…Complex manufacturing process due to the flat-tubular structure. Difficult to seal and stack [26][27][28].…”

Section: Types Of Ms-sofcsmentioning

confidence: 99%

“…Similar to the anode, cathode-related issues can be addressed by utilizing the infiltration method. The application of LSM-infiltrated YSZ cathode in MS-SOFCs has shown promising performance in the temperature range of 650-750 • C [27,108].…”

Section: Cathode Problemsmentioning

confidence: 99%

“…According to the findings of Tucker et al [27], it was observed that the SS-430L MS (metal substrate) on the cathode side (air) developed a chromium scale measuring approximately 0.9 µm in thickness after 1200 h of operation. By extrapolating the growth rate of the scale, the researchers concluded that the cell could potentially function for up to 30,000 h before experiencing cleavage.…”

mentioning

confidence: 99%

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Metal-Supported Solid Oxide Fuel Cells: A Review of Recent Developments and Problems

Opakhai

Кутербеков

2023

Energies

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The design of metal-supported solid oxide fuel cells (MS-SOFCs) has again aroused interest in recent years due to their low cost of materials, strength, and resistance to thermal cycling, as well as the advantages of manufacturability. MS-SOFCs are promising electrochemical devices for hydrogen energy. Compared to SOFCs, where ceramic electrodes or electrolytes are used as a carrier base, they are of great interest due to their fast start-up capability, greater reliability, mechanical stability, and resistance to the thermal cycle. MS-SOFCs have many advantages over conventional ceramic-based SOFCs, with the selection of metal-based electrode materials (anode, cathode) and their degradation processes being some of the biggest challenges facing researchers. Therefore, this review reports on the state of the latest research on MS-SOFCs with various structures, discusses the corresponding electrode materials and their existing problems, and puts forward topical issues that need to be addressed in MS-SOFCs.

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“…Complex manufacturing process due to the flat-tubular structure. Difficult to seal and stack [26][27][28].…”

Section: Types Of Ms-sofcsmentioning

confidence: 99%

Section: Cathode Problemsmentioning

confidence: 99%

mentioning

confidence: 99%

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Metal-Supported Solid Oxide Fuel Cells: A Review of Recent Developments and Problems

Opakhai

Кутербеков

2023

Energies

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“…No growth of this oxide scale has been observed during thousands of hours of continuous cell operation. Note that the ability to form such a coherent oxide scale on the steel substrate is a distinct advantage over other metal-supported SOFC designs using sintered powdermetal derived substrates, where significant interdiffusion of the anode material and the steel have been reported (13,14). A bespoke laser has been developed in collaboration with a major laser manufacturer which enables the drilling of several substrates simultaneously resulting in a commercially viable mass-production process.…”

Section: Cell Structurementioning

confidence: 99%

Development of Highly Robust, Volume-Manufacturable Metal-Supported SOFCs for Operation Below 600°

et al. 2011

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Ceres Power has been developing fuel cell stacks and mCHP systems based on its unique metal-supported SOFC design incorporating a gadolinia-doped ceria (CGO) electrolyte operating in the 450-600°C temperature range. The metal supports are lowcost ferritic stainless steel foils which are perforated using a laser to create a porous region for gas diffusion on the anode side, and an impermeable region around the perimeter for sealing. Conventional volume ceramic processing techniques are used for the deposition of the anode, bulk electrolyte, cathode active and cathode current-collector layers, which are all sintered in a nonreducing atmosphere. A proprietary technique has been developed for the deposition of a dense stabilized zirconia layer and a CGO barrier layer between the bulk CGO electrolyte and the cathode active layer, largely blocking the internal short-circuiting currents inherent in the use of ceria-based electrolytes due to the mixedconductivity of CGO when exposed to an anodic atmosphere. The use of this layer enables close-to-theoretical cell efficiencies to be obtained, whilst still maintaining the advantages of high ionic conductivity and sinterability which make CGO ideal for lowtemperature processing and operation. The present generation of cells being manufactured are designed to meet the commercial requirements for a wall mounted, natural gas fuelled mCHP product, producing an average of 140 mWcm -2 at 0.75 V/cell at 570°C and 60% fuel utilization, operating on steam-reformed natural gas. Open-circuit voltages are around 1.10V operating on hydrogen/nitrogen; close to theoretical values indicating the effective suppression of internal short-circuits. The unique metal supported design facilitates simple and robust hermetic sealing of the cell to the interconnect by welding, and layer-to layer sealing and isolation is achieved using a commercial gasket material, thus largely eliminating degradation due to thermal stress induced seal leakage found in conventional planar SOFC designs. The extreme robustness of the metal foil cell design has been demonstrated by thermally cycling welded cell/interconnect assemblies from 100-600°C (<5 min total cycle time) using an infrared heater and forced air cooling. After 100 cycles, there was no degradation of the gas tightness of the assembly (pressure-decay leak tester). These tested cells were then assembled into a short stack and tested, with electronic performance indistinguishable from a short stack of new cells.

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“…Since the bulk of the material can be composed of inexpensive material, expensive ceramic can be limited to thin functional layers. Additionally, the metal-supported design allows for easily manufacturable and inexpensive conventional metal joining techniques such as brazing, welding and crimp sealing 5 .…”

Section: Introductionmentioning

confidence: 99%

Manufacturing and microstructure of porous metal supports for a solid oxide fuel cell

et al. 2015

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One of the major drawbacks of a solid oxide fuel cell (SOFC) is the longtime stability. In order to have mechanical stability, the cell can be supported by a so-called porous metal support. These metal supports are usually manufactured by tape casting. This work, in contrast, is focused on processing these supports by different powder metallurgical techniques such as the press-and sinter route, gravity sintering or metal injection moulding. For some samples a shrinkage of 15% could be obtained as defined by the shrinkage of the ceramic functional layers (in case of desired ''co-sintering an interval of 15-20% is preferable). The most promising manufacturing routes were found to be gravity sintering (about 50% porosity) and MIM (20-28% porosity): in both cases the pores are homogeneously distributed, and only slight agglomeration of pores can be seen.

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Progress in Metal-Supported SOFCs

Cited by 20 publications

References 12 publications

Metal-Supported Solid Oxide Fuel Cells: A Review of Recent Developments and Problems

Metal-Supported Solid Oxide Fuel Cells: A Review of Recent Developments and Problems

Development of Highly Robust, Volume-Manufacturable Metal-Supported SOFCs for Operation Below 600°

Manufacturing and microstructure of porous metal supports for a solid oxide fuel cell

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