Low temperature solid oxide fuel cells with SDC-carbonate electrolytes
2010 (English)In: Chinese Ceramics Communications, Trans Tech Publications Inc., 2010, no 1, 687-690 p.Conference paper (Refereed)
Composites consisting of Ce0.8Sm0.2O1.9 (SDC)-carbonate were developed as electrolytes for low temperature solid oxide fuel cells (LTSOFC). The SDC power was prepared by sol-gel method. The carbonates were binary eutectics of (Li/Na)2CO3, (Li/K)2CO3 and (K/Na)2CO3. Conductivity measurements showed that the conductivities were depended on the type of carbonates. Discontinuities were found in the Arrhenius plots for both SDC-(Li/Na)2CO3 and SDC-(Li/K)2CO3. For SDC-(Na/K)2CO3 composite electrolyte, the conductivity increased as temperature rose following one slope. Single cells based on various composites were fabricated by a uniaxial die-press method and tested at 450-600 °C. The results showed all cells exhibited improved performances upon that of pure SDC-based cell. The best power density of 532 mW cm -2 at 600 °C was achieved for LTSOFC using composite of SDC and (Li/Na)2CO3. Conductivity mechanism was also discussed.
Place, publisher, year, edition, pages
Trans Tech Publications Inc., 2010. no 1, 687-690 p.
, Advanced Materials Research, ISSN 1022-6680 ; 105-106
Composite electrolyte, Doped ceria, Low temperature solid oxide fuel cells (LTSOFC)
IdentifiersURN: urn:nbn:se:kth:diva-149385DOI: 10.4028/www.scientific.net/AMR.105-106.687ISI: 000288352100185ScopusID: 2-s2.0-77954184969ISBN: 0878492755ISBN: 978-087849275-6OAI: oai:DiVA.org:kth-149385DiVA: diva2:740313
6th China International Conference on High-Performance Ceramics, CICC-6; Harbin; China; 16 August 2009 through 19 August 2009
QC 201408252014-08-252014-08-212014-08-25Bibliographically approved