TY - JOUR
T1 - Micro ceramic fuel cells with multilayered yttrium-doped barium cerate and zirconate thin film electrolytes
AU - Bae, Kiho
AU - Jang, Dong Young
AU - Jung, Ho Jean
AU - Kim, Jun Woo
AU - Son, Ji Won
AU - Shim, Joon Hyung
N1 - Funding Information:
The authors are grateful to the Fusion Research Program for Green Technologies of the National Research Foundation (NRF) of Korea funded by the Ministry of Education, Science, and Technology (MEST) (Grant No. NRF-2011-0019300 ), and to the Young Fellow Program of Korea Institute of Science and Technology (KIST) for financial support.
Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2014
Y1 - 2014
N2 - Multi- and mono-layered thin film electrolytes based on BaCe 0.9Y0.1O3-δ (BCY) and BaZr 0.85Y0.15O3-δ (BZY) ceramics are fabricated by pulsed laser deposition (PLD) 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.
AB - Multi- and mono-layered thin film electrolytes based on BaCe 0.9Y0.1O3-δ (BCY) and BaZr 0.85Y0.15O3-δ (BZY) ceramics are fabricated by pulsed laser deposition (PLD) 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.
KW - Micro-protonic ceramic fuel cell
KW - Multilayer electrolyte
KW - Pulsed laser deposition
KW - Yttrium-doped barium cerate
KW - Yttrium-doped barium zirconate
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U2 - 10.1016/j.jpowsour.2013.10.057
DO - 10.1016/j.jpowsour.2013.10.057
M3 - Article
AN - SCOPUS:84887450869
VL - 248
SP - 1163
EP - 1169
JO - Journal of Power Sources
JF - Journal of Power Sources
SN - 0378-7753
ER -
