Journal
JOURNAL OF POWER SOURCES
Volume 195, Issue 6, Pages 1599-1604Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2009.09.050
Keywords
Solid oxide fuel cells; Bias-assisted sputtering; Ceria interlayer; Mixed ionic-electronic cathode; Anode supported
Funding
- FAPESP [2007/08686-8]
- CNPq [306422/2007-7]
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The growth and electrochemical properties of gadolinia-doped ceria (GDC) inlet layers deposited by bias-assisted magnetron sputtering in solid oxide fuel cells have been investigated Such interlayers act as diffusion barriers to protect the yttria-stabilized zirconia electrolyte. preventing possible degradation when mixed ionic-electronic conductor (La,Si)(Co,Fe)O(3-delta) is used as the cathode The dependence of the applied bias during the sputtering deposition on both the interlayer microstructure and fuel cell performance has been studied in anode-supported single cells. The main experimental results Showed that bias-assisted sputtering of GDC interlayers produced microstructures denser than those of unbiased deposit ions, which resulted in increased electrochemical properties of fuel cells (C) 2009 Elsevier B.V All rights reserved
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