Performance of Metal Supported SOFCs Operated in Hydrocarbon Fuels and at Low (&lt;650˚C) Temperatures

Christensen, Jens Ole; Hagen, Anke; Sudireddy, Bhaskar Reddy

doi:10.1149/10301.0713ecst

Cited by 7 publications

(5 citation statements)

References 12 publications

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“…Due to the limited availability of the specific cells, the test was continued. The ASR values of the better MSC is in the same range as obtained on similar cells (though slightly different conditions) in EC ( 6) and FC mode (12,13). Figure 3 shows the initial EIS of the cells.…”

Section: Initial Performancesupporting

confidence: 64%

Reversible Metal Supported Solid Oxide Cells

Hagen,

Tasca,

De-Faria

et al. 2023

ECS Trans.

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Solid oxide cells (SOCs) can operate in fuel cell and electrolysis mode, allowing for production of electricity and heat from a green fuel, and for storage of electricity as gas or use as fuel. Lifetime and costs are major factors enabling commercialization. Metal supported SOCs (MSCs) provide cost-competitive materials within the cell. The present study investigates the reversible operation of MSCs, fabricated by tape casting, lamination, and screen-printing, at 650 oC in 50/50 steam/hydrogen gas. In the initial few hundred hours, the MSC show a lower degradation rate compared to a state-of-the-art (SoA) fuel electrode supported cell in the electrolysis mode, while it is ca. comparable in fuel cell mode. Electrochemical impedance evaluation revealed that the degradation is due to a simultaneous increase of the serial and polarization resistances in the MSC while it is mainly due to increase of the polarization resistance in the SoA cell.

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Section: Initial Performancesupporting

confidence: 64%

Reversible Metal Supported Solid Oxide Cells

Hagen,

Tasca,

De-Faria

et al. 2023

ECS Trans.

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“…The ASR values of the better MSC is in the same range as obtained on similar cells (though obtained at slightly different conditions) in EC 8 and FC mode. 15,16 Figure 3 shows the initial EIS of the cells. As already seen from the iV curves (see Fig.…”

Section: Resultsmentioning

confidence: 99%

Reversible Operation of Metal Supported Solid Oxide Cells

Hagen,

Tasca,

De Faria

et al. 2024

J. Electrochem. Soc.

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Solid oxide cells (SOCs) can operate in fuel cell and electrolysis mode. This option allows for production of electricity and heat from a green fuel in fuel cell mode and for storage of electricity as gas or use as fuel in electrolysis mode. Demonstration of reversible SOCs has progressed over the last few years. Increase of lifetime and reduction of costs are major factors for successful commercialization. In metal supported SOCs (MSCs) the thickest layer in the cell, the support layer of a few hundred µm, uses metal instead of Ni/YSZ cermet as in state-of-the-art (SoA) fuel electrode supported cells, thereby enabling a significant cost reduction. The present study investigates SoA Ni/YSZ SOCs and MSCs, fabricated by tape casting, lamination, and screen-printing, in reversible operation at 650oC in 50/50 steam/hydrogen. In the initial few hundred hours, the degradation rate in electrolysis mode is smaller on a MSC compared to a SoA Ni/YSZ cell, while they are comparable in fuel cell mode. According to electrochemical impedance evaluation, the degradation is due to a simultaneous increase of the serial and polarization resistances in the MSC, while it is mainly due to an increase of the polarization resistance in the SoA cell.

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“…Critical issues of metal-supported fuel cells have been analyzed by Larring and Fontaine [25]. International research teams such as Lawrence Berkeley National Laboratory (LBNL)/Nissan/Chemtronergy/UConn, DLR/Plansee/Julich/KIT, and Topsoe/Riso/DTU have demonstrated several manfacturing pathways for MS-SOFC cells, utilization of various fuels , and multi-cell stacks [26][27][28][29][30]. Ceres Power has advanced their "SteelCell" technology to commercialization, with 0.5 kW L -1 volumetric power density reported in a stationary power configuration [20].…”

Section: Introductionmentioning

confidence: 99%