| Autor: |
Szabo, Patric, Arnold, Johannes, Franco, Thomas, Gindrat, Malko, Refke, Arno, Zagst, Armin, Ansar, Asif |
| Zdroj: |
ECS Transactions; September 2009, Vol. 25 Issue: 2 p175-185, 11p |
| Abstrakt: |
DLR is one of the pioneer groups to introduce metal supported solid oxide fuel cells (MS-SOFC) in mid 90s and it is continuing the development of the concept towards a reliable light weight 1 kW stack for APU in a funded consortium with ElringKlinger, Plansee and Sulzer Metco. The joint work is an integrated approach incorporating improved materials for functional layers, advanced industrial scale manufacturing and an evolved stack design to define a pilot production set-up for large volume manufacturing. At laboratory scale, the latest generation button cells (12 to 15 cm2 effective area) exhibited more than 750 and 520 mW/cm2 respectively with hydrogen and simulated reformate gas as fuel at 800{degree sign}C. 2000 hours tests were performed with degradation rate of less than 1.5%/kh. Redox stability of these cells was demonstrated for 20 cycles during which the anodes were fully oxidized. Up-scaling to 85 cm2 and 100 cm2 effective area cells was accomplished and the cells showed 400 mW/cm2 power density using simulated reformate gas at a fuel utilisation of 32%. Further improvements consisting of developing large scale industrial processes for the fabrication of functional layers including low pressure plasma spraying (LPPS) and atmospheric plasma spraying (APS) with TriplexPro are in progress. The aim is to get higher productivity and reproducibility. In addition, a new alloy for interconnects and substrates will be incorporated to further enhance the durability of cells. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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