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Low temperature solid oxide fuel cells with SDC-carbonate electrolytes
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2010 (English)In: Chinese Ceramics Communications, Trans Tech Publications Inc., 2010, no 1, 687-690 p.Conference paper (Refereed)
Abstract [en]

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
Keyword [en]
Composite electrolyte, Doped ceria, Low temperature solid oxide fuel cells (LTSOFC)
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URN: urn:nbn:se:kth:diva-149385DOI: 10.4028/ 000288352100185ScopusID: 2-s2.0-77954184969ISBN: 0878492755ISBN: 978-087849275-6OAI: diva2:740313
6th China International Conference on High-Performance Ceramics, CICC-6; Harbin; China; 16 August 2009 through 19 August 2009

QC 20140825

Available from: 2014-08-25 Created: 2014-08-21 Last updated: 2014-08-25Bibliographically approved

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Zhu, Bin
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Heat and Power Technology

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