Advances in Metal Supported Cells in the METSOFC EU Consortium

Publication: Research - peer-reviewArticle in proceedings – Annual report year: 2012

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Employing a mechanically robust metal support as the structural element in SOFC has been the objective of various development efforts. The EU-sponsored project “METSOFC”, completed at the end of 2011, resulted in a number of advancements towards implementing this strategy. These include robust metal supported cells (MSCs) having low ASR at low temperature, incorporation into small stacks of powers approaching ½kW, and stack tolerance to various operation cycles. DTU Energy Conversion's (formerly Risø DTU) research into planar MSCs has produced an advanced cell design with high performance. The novel approach has yielded roboust, defect-free cells fabricated by a unique and well-tailored co-sintering process. At low operation temperatures (650°C), these cells have shown remarkable ASRs: 0.35 Ωcm2 in cell tests (16 cm2 active area) and under 0.3 Ωcm2 in button cells (0.5 cm2 active area). Further success was attained with even larger cell areas of 12 cm squares, which facilitated integration into stacks at Topsoe Fuel Cell. Development of MSC stacks showed that the MSCs could achieve similar or better performance, compared to SoA anode supported ceramic cells. The best stacked MSCs had power densities approaching 275 mW/cm2 (at 680°C and 0.8V). Furthermore, extended testing at AVL determined extra stack performance and reliability characteristics, including behavior towards sulfur and simulated diesel reformate, and tolerance to thermal cycles and load cycles. These and other key outcomes of the METSOFC consortium are covered, along with associated work
supported by the Danish National Advanced Technology Foundation.

Original languageEnglish
TitleProceedings
Number of pages10
PublisherEuropean Fuel Cell Forum
Publication date2012
PagesA0903
StatePublished

Conference

Conference10th European SOFC Forum
CountrySwitzerland
CityLuzern
Period26/06/1229/06/12

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