Digitale Medien
s.l. ; Stafa-Zurich, Switzerland
Materials science forum
Vol. 539-543 (Mar. 2007), p. 1309-1314
ISSN:
1662-9752
Quelle:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Thema:
Maschinenbau
Notizen:
The SOFC technology under development at Risø National Laboratory (RISØ) andTopsoe Fuel Cell A/S (TOFC) is based on an integrated approach ranging from basic materialsresearch on single component level over development of cell and stack manufacturing technology tosystem studies and modelling. The effort also comprises an extensive cell and stack testingprogram. Systems design, development and test is pursued by TOFC in collaboration with variouspartners. The standard cells are thin and robust with dimensions of 12 x 12 cm2 and cell stacks arebased on internal manifolding. Production of cells is being up-scaled continuously. The durabilityof the standard stack design with standard cells has been tested for more than 13000 hours includingnine full thermal cycles with an overall voltage degradation rate of about 1% per 1000 hours.Recently, the degradation rate has been significantly reduced by introduction of improved stackcomponent materials. 75-cell stacks in the 1+ kW power range have been tested successfully. Stackshave been delivered in a pre-reduced state to partners and tested successfully in test systems withnatural gas as fuel. The consortium of TOFC and RISØ has an extended program to develop theSOFC technology all the way to a marketable product. Stack and system modelling including costoptimisation analysis is used to develop multi kW stack modules for operation in the temperaturerange 700-850oC. To ensure the emergence of cost-competitive solutions, a special effort is focusedon larger anode-supported cells as well as a new generation of SOFCs based on porous metalsupports and new electrode and electrolyte materials. The SOFC program comprises developmentof next generation of cells and multi stack modules for operation at lower temperature withincreased durability and mechanical robustness in order to ensure long-term competitiveness
Materialart:
Digitale Medien
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.1309.pdf
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