Paper Title:
Low Temperature Solid Oxide Fuel Cells with SDC-Carbonate Electrolytes
  Abstract

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 oC. 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 oC was achieved for LTSOFC using composite of SDC and (Li/Na)2CO3. Conductivity mechanism was also discussed.

  Info
Periodical
Advanced Materials Research (Volumes 105-106)
Edited by
Wei Pan and Jianghong Gong
Pages
687-690
DOI
10.4028/www.scientific.net/AMR.105-106.687
Citation
J. Di, M. M. Chen, C. Y. Wang, J. M. Zheng, B. Zhu, "Low Temperature Solid Oxide Fuel Cells with SDC-Carbonate Electrolytes", Advanced Materials Research, Vols. 105-106, pp. 687-690, 2010
Online since
April 2010
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Price
$32.00
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