Structural and Electrical Properties of Gadolinia-doped Ceria Mixed with Alkali Earth Carbonates for SOFC Applications
2007 (English)In: SOLID OXIDE FUEL CELLS 10 (SOFC-X), PTS 1 AND 2 / [ed] Eguchi, K; Singhai, SC; Yokokawa, H; Mizusaki, H, 2007, 2261-2268 p.Conference paper (Refereed)
The properties of composite materials based on mixtures of gadolinium-doped ceria (GDC) and Li(2)CO(3)-K(2)CO(3) are analyzed as potential SOFC electrolytes. In a temperature range higher than 500 degrees C, their ionic conductivity is significantly higher than for single GDC. Discontinuities were found in the conductivity Arrhenius diagram (sigma vs. 1/T) around the melting point of the carbonate mixture (490 degrees C), showing, at least partially, the contribution of molten carbonates. At this stage, precise mechanisms are still under analysis.
Place, publisher, year, edition, pages
2007. 2261-2268 p.
, ECS Transactions, ISSN 1938-5862
LOW-TEMPERATURE SOFCS, OXIDE FUEL-CELLS, COMPOSITE ELECTROLYTE
IdentifiersURN: urn:nbn:se:kth:diva-50222DOI: 10.1149/1.2729343ISI: 000271968900278ScopusID: 2-s2.0-45249116579ISBN: 978-1-56677-554-0OAI: oai:DiVA.org:kth-50222DiVA: diva2:461321
10th International Symposium on Solid Oxide Fuel Cells. Nara, JAPAN. JUN 03-08, 2007
QC 201112082011-12-022011-12-022011-12-08Bibliographically approved