Manufacturing and characterization of metal-supported solid oxide fuel cells

Publication: Research - peer-reviewConference article – Annual report year: 2011

View graph of relations

A metal-supported solid oxide fuel cell design offers competitive advantages, for example reduced material costs and improved robustness. This paper reports the performance and stability of a recently developed metal-supported cell design, based on a novel cermet anode, on a 25cm2 (1cm2/16cm2 active area) cell level. An electrochemical performance comparable to state-of-the-art anode-supported cells is demonstrated.Detailed electrochemical analysis allowed assignment of the overall polarization losses quantitatively to gas diffusion in the metal support, electrooxidation in the anode functional layer, oxygen reduction in the mixed ionic-electronic conducting cathode and an additional polarization process with a rather high relaxation frequency, which may be assigned to an insulating corrosion interlayer.The durability of the cells was investigated by means of galvanostatic operation for periods of up to 1000h as well as the dynamic behavior, such as redox-, load- and thermal cycling tests.The galvanostatic stability tests indicated a fair, but significant degradation rate (∼5% decrease in cell voltage/1000h at 650°C and 0.25Acm−2). Furthermore, the metal-supported cells underwent an endurance test of 100 redox cycles at 800°C without severe degradation nor total failure.
Original languageEnglish
JournalJournal of Power Sources
Publication date2011
Volume196
Issue17
Pages7117-7125
ISSN0378-7753
DOIs
StatePublished

Conference

Conference9th European Solid Oxide Fuel Cell Forum
Number9
CountrySwitzerland
CityLucerne
Period29/06/1002/07/10
Internet addresshttp://www.efcf.com/past/
CitationsWeb of Science® Times Cited: 23

Keywords

  • Solid Oxide Fuel Cells
Download as:
Download as PDF
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
PDF
Download as HTML
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
HTML
Download as Word
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
Word

ID: 5613072