This title appears in the Scientific Report :
2015
Solide Oxide Cells - Development Status at Forschungszentrum Jülich
Solide Oxide Cells - Development Status at Forschungszentrum Jülich
The development of solid oxide fuel cells (SOFCs) at Forschungszentrum Jülich that started mid of the1990’s achieved since then a very well advanced status.In fact, anode supported cells with thin film 8YSZ electrolyte and LSC cathode reached current density of approx. 3.5A/cm² at 700 °C. The high-c...
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Personal Name(s): | Röhrens, Daniel (Corresponding author) |
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Blum, Ludger / de Haart, L.G.J. / Malzbender, Jürgen / Margaritis, Nikolaos / Menzler, Norbert H. | |
Contributing Institute: |
Technoökonomische Systemanalyse; IEK-3 Werkstoffstruktur und -eigenschaften; IEK-2 Werkstoffsynthese und Herstellungsverfahren; IEK-1 Zentralinstitut für Technologie; ZEA-1 Grundlagen der Elektrochemie; IEK-9 |
Imprint: |
2015
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Conference: | 11th International Conference on Ceramic Materials and Components for Energy and Environmental Applications, Vancouver (Canada), 2015-06-14 - 2015-06-19 |
Document Type: |
Conference Presentation |
Research Program: |
Solid Oxide Fuel Cell Fuel Cells |
Publikationsportal JuSER |
The development of solid oxide fuel cells (SOFCs) at Forschungszentrum Jülich that started mid of the1990’s achieved since then a very well advanced status.In fact, anode supported cells with thin film 8YSZ electrolyte and LSC cathode reached current density of approx. 3.5A/cm² at 700 °C. The high-chromium containing interconnect steel Crofer 22 APU and its enhanced creep strengthmodification Crofer 22 H are well established in the community. Glass-ceramic sealing based stack design andoperation strategies have been improved resulting in increased mechanical robustness.Recently a 2 kW stack was operated for 5000 h revealing a degradation rate of only 0.3%/kh. Short stacks arecurrently running for more than 64,000 h with degradation rates of 0.7%/kh and for > 34,500 h with < 0.3%/kh. As aspecial highlight, a 20 kW<sub>el</sub> system based on four 5 kW stacks has also been operated successfully.Recently also the use of the “classical” SOFC as electrolyser (SOEC) has been introduced showing moderatedegradation rates.A third approach is the realization of the SOFC/SOEC system as a rechargeable oxide battery (ROB). In such an ROBthe fuel side is filled with a water vapour/hydrogen gas mixture and subsequently sealed off. A metal (in initial studiesiron was used) which can be reduced (charged) in SOEC mode and oxidized (discharged) in fuel cell mode isintegrated in the steam/hydrogen compartment. |