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Micro ceramic fuel cells with multilayered yttrium-doped barium cerate and zirconate thin film electrolytes

Authors
Bae, KihoJang, Dong YoungJung, Ho JeanKim, Jun WooSon, Ji-WonShim, Joon Hyung
Issue Date
15-2월-2014
Publisher
ELSEVIER SCIENCE BV
Keywords
Micro-protonic ceramic fuel cell; Yttrium-doped barium zirconate; Yttrium-doped barium cerate; Multi layer electrolyte; Pulsed laser deposition
Citation
JOURNAL OF POWER SOURCES, v.248, pp.1163 - 1169
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF POWER SOURCES
Volume
248
Start Page
1163
End Page
1169
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/99278
DOI
10.1016/j.jpowsour.2013.10.057
ISSN
0378-7753
Abstract
Multi- and mono-layered thin film electrolytes based on BaCe0.9Y0.1O3-delta(BCY) and BaZr0.85Y0.15O3-delta (BZY) ceramics are fabricated by pulsed laser deposition (PLO) for use in micro-protonic ceramic fuel cells (micro-PCFCs), and their microstructure and fuel cell performances are investigated. Fully dense and well-crystallized BCY and BZY layers are identified in the multi- and mono-layered electrolytes, and are confirmed by microstructural analyses. Fuel cell and impedance measurements confirm that the bare BCY cells exhibit superior performance to samples with BZY capping; however, this capping does not offer any advantage in terms of operational stability. In contrast, the BCY-capped BZY cell performs better than the bare BZY cell, implying that BCY possesses more active surface kinetics. Anodic improvement is as important as cathodic modification for the intermediate-temperature operation of PCFCs. The BCY-capped BZY cell also demonstrates excellent stability, maintaining a good open circuit voltage for over 10 h. (C) 2013 Elsevier B.V. All rights reserved.
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