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Influence of a platinum functional layer on a Ni-Ce0.9Gd0.1O1.95 anode for thin-film solid oxide fuel cells

Title
Influence of a platinum functional layer on a Ni-Ce0.9Gd0.1O1.95 anode for thin-film solid oxide fuel cells
Author
김영범
Keywords
YTTRIA-STABILIZED ZIRCONIA; RAPID START-UP; IMPEDANCE SPECTRA; DEPOSITION; PERFORMANCE; CATHODE
Issue Date
2015-07
Publisher
A V S AMER INST PHYSICS
Citation
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A, v. 33, NO 5, Page. 1-5
Abstract
A Pt functional layer was deposited between a Ni-Ce0.9Gd0.1O1.95 (50 wt. % Ni) anode and an 8 mol. % yttria-stabilized zirconia electrolyte in order to enhance the performance of a thin film solid oxide fuel cell. By inserting this ultrathin functional layer, the ohmic impedance of the single cell was significantly reduced, and the maximum power density was increased by a factor of similar to 1.55. However, excessive deposition of the Pt functional layer caused ionic conduction pathway blocking between the yttria-stabilized zirconia and Ni-Gd0.1Ce0.9O1.95 (Ni-GDC), deactivating the Ni-GDC as a mixed ionic and electronic conducting anode. As a result, both the ohmic impedance and anodic faradaic impedance were increased after introduction of excessive Pt functional layer, and the maximum power density was also reduced. (C) 2015 American Vacuum Society.
URI
http://avs.scitation.org/doi/abs/10.1116/1.4927160http://hdl.handle.net/20.500.11754/26046
ISSN
0734-2101; 1520-8559
DOI
10.1116/1.4927160
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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